The Mosquitoes of Morelos, Mexico: DNA Barcodes, Distribution, Ecology and the Resurrection of the Name Culiseta dugesi Dyar and Knab (Diptera: Culicidae) †

: To update the record of mosquito diversity in the state of Morelos, Mexico, mosquito collections were conducted in both physiographical regions of Morelos: the Neo-volcanic Axis and the South Mountain Range. Immature stages were collected from aquatic habitats, while adult mosquitoes were collected using CDC light traps, Shannon traps and approaching/landing on the collecting personnel. All specimens were identified using taxonomic keys and the mitochondrial cytochrome C oxidase subunit 1 ( COI ). Following Mexico State, this is the second study of mosquito taxonomy of a complete Mexican state using COI barcoding. In Morelos, a total of 58 species of mosquito occurs, of which we report 12 for first time ( Aedes vexans , Ae. euplocamus , Ae. vargasi , Psorophora cilipes , Ps. lineata , Culex restrictor , Cx. interrogator , Cx. nigripalpus , Cx. tarsalis , Cx. sandrae , Cx. lactator and Toxorhynchites moctezuma ). Morelos now ranks sixth in mosquito diversity among Mexican states. Phylogenetic trees were constructed for 32 species, including Ae. shannoni , which is a new record for GenBank databases. Additionally, we report COI barcode sequences of Culiseta dugesi Dyar and Knab, which is resurrected from the synonymy of Cs. particeps (Adams). Fourth-instar larvae and adult females of Cs. dugesi were redescribed. This brings the number of mosquito species in Mexico to 248. Ecological and distributional notes for the new records, the medical importance of mosquito species in Morelos, and an identification key for larvae and females of the known Culiseta species occurring in Mexico are also included.


Introduction
The family Culicidae currently includes approximately 3720 described species [1].Several species are biting pests and also play an important role as vectors of pathogens of region (Mountain Ranges and Valleys of Guerrero) [41].The regions and sub-regions of Morelos including the municipalities sampled are depicted in Table 1.

Ranges of Southern Puebla)
Amacuzac, Jojutla, Tepalcingo, Tlaquiltenango This sub-region is composed of volcanic rocks and hills, some mountains with elevations above 1500 m, the climate is temperate humid in winter and warm humid in summer.Extensive areas of sub-tropical forest and grasslands.Table 1.Description of the physiography of Morelos and list of municipalities sampled [41].
Neo-volcanic Axis (Mountain Ranges of Southern Puebla) Amacuzac, Jojutla, Tepalcingo, Tlaquiltenango This sub-region is composed of volcanic rocks and hills, some mountains with elevations above 1500 m, the climate is temperate humid in winter and warm humid in summer.Extensive areas of sub-tropical forest and grasslands.

South Mountain Range (Mountain Ranges and Valleys of Guerrero)
Mazatepec, Miacatlán, Puente de Ixtla, Xoxocotla, Yautepec, This sub-region is made up of small canyons and lower mountains, the climate is warm and humid, with rains during the summer.The vegetation is composed of grasslands, shrubs, copal and amate forests

Mosquito Collection and Identification
Mosquitoes were collected in all life stages (except eggs), in specific sites in the two physiographic regions of Morelos (Table 1).The collections were conducted in both the dry and rainy seasons from 2009-2018.Immature stages were collected from any available water body, and some environmental parameters were recorded such as pH, salinity, and temperature which were measured using a portable Hanna ® (mod.HI98129) tester.Larvae and pupae were placed in cups with water from the original aquatic habitat and transported alive to the Laboratory of Parasitology of the Autonomous Agrarian University Antonio Narro Laguna Unit (LBM-UAAAN-UL).A portion of fourth-instar larvae from each collection was mounted on microscope slides using Euparal as the mounting medium.The other larvae were placed into individual emergence tubes to obtain the adult stages and the larval and pupal exuviae.Male genitalia were dissected to assist the taxonomic identification when it was required.Adults were collected using CDC light traps baited with cotton balls containing drops of octenol, which were placed 20:00-9:00 h. and checked daily.Shannon traps baited with humans were used during daylight hours, and resting mosquitoes were aspirated directly from caves and vegetation.All adult mosquitoes were killed using triethylamine vapors and later mounted on insect pins.Mosquitoes mounted on insect pins were identified using specific identification keys and a stereomicroscope Discovery V8 (Zeiss, Jena, Germany), while immature stages and exuviae were identified using a Primostar microscope (Zeiss).The terminology proposed by Harbach and Knight [42] for mosquito anatomy and the classification system for the family Culicidae proposed by Wilkerson et al. [43] are used in this study.

Genomic DNA Extraction
We employed a modified Hotshot technique [44] for the DNA extraction.In this case, 1-2 legs from each mosquito voucher were placed directly into 50 µL of alkaline lysis buffer (25 mM NaOH, 0.2 mM Na 2 EDTA) in a 96-well plate, which was then sonicated (Grant Ultrasonic 3 L Bath) in a water bath for 15 min.The plate was subsequently incubated in a thermocycler for 30 min at 94 • C, cooled for 5 min at 4 • C, and then centrifuged for 3 min at 3000 rpm, after which 50 µL of the neutralizing buffer (40 mMTri-HCL) was added to each sample.The plate was then stored at −80 • C until analysis.

Genetic Data Analysis
For molecular species identification using the COI DNA barcoding region, the protocols of Hernández-Triana et al. [46,47] and Hebert et al. [12,13] were followed.Amplicons were obtained using a Qiagen PCR system following the reaction mix of Hernández-Triana et al. [4].The dataset was analyzed in MEGA v.6 [48].The Bayesian inference was performed in BEASTv.2.6.7 [49] using the TrNef substitution model (ln = −7561.4940)and estimated parameter priors with the Yule model.Three independent Markov chains of 10,000,000 replicates were run with sampling every 10,000.The sample parameters were combined with LogCombiner and basic parameters were checked in Tracer v.1.7.1 [50].The sampled trees were combined with LogCombiner and then summarized with TreeAnnotator.The posterior probability was calculated for each node in a maximum clade credibility tree with a burn-in of 10%.For barcode sequences larger than 500 bp, a Barcode Index Number (BIN) was assigned and each BIN was mapped according to species.The taxonomic discordance in the dataset [4] was analyzed using BOLD as detailed in Ratnasingham and Hebert [51].

Ethical Consideration
All specimens studied during this research were collected by official personnel of the Mexican public health and vector control programs, and personnel from the Mexican network of Entomological and Bioassay Research Units (UIEBs).The different UIEBs located in most states of Mexico serve as reference laboratories for taxonomic identification of vectors collected on the field, and design specific strategies for control of vector-borne diseases.This study was approved and supported by the National Center of Preventive Programs and Disease Control (CENAPRECE).

Species Originally Described in Morelos
This species-group is composed of endemic Mexican mosquito species, and although all these species were originally discovered in Morelos, they have currently also been reported in other states of Mexico.Aedes ramirezi, Ae. shannoni, Ae. chionotum, Ae. gabriel, and Ae.kompi were originally discovered in Morelos.
On 29 June 1947, immature stages of Ae. kompi were first collected by W. G. Downs from tree holes and rock holes in Tepoztlán.In this study, immature stages of Ae. kompi were collected from one tree hole with colored water at 2 m. from ground level in Tepoztlán in association with Ae. gabriel and Ae.ageypti.In Huitzilac, females of Ae. kompi were collected approaching humans during the day with partial shade in association with Cs. dugesi.Aedes kompi has been found only in Mexico State and Morelos.
On 10 June 1948, immature stages of Ae. shannoni were first collected by W. G. Downs in Cuernavaca county from temporal ground pools; since then, very few records of the presence of Ae. shannoni have been published, it being one of the most uncommon mosquito species in Mexico.In this study, immature stages of Ae. shannoni were collected from temporal ground pools with clean water and emergent vegetation with partial shade and from volcanic rock holes with clean water and partial shade in Tlaquiltenango, Puente de Ixtla and Tlayacapan counties.Females of Ae. shannoni were also collected biting humans diurnally; this species is a persistent biter, that kept biting even when the host was moving; associated species in this collection were Ae.epactius, Hg. mesodentatus, and Ae.gabriel.Aedes shannoni has been found in the states of Guerrero, Mexico State, Michoacán, Morelos, and Querétaro.
On 19 August 1965, immature stages of Ae. chionotum were first collected by D. Schroeder from tree holes in Cuernavaca.Zavortink [58] described all life stages except the eggs.Additional collection records were provided by Heinemann and Belkin [59].During this study, immature stages of Ae. chionotum were collected from ovitraps placed in a tree above 1.5 m. from ground level with clean water and leaves at the bottom in Huitzilac and from volcanic rock holes with clean water and abundant leaves at the bottom with partial shade in Tepoztlán.Aedes chionotum has been found in Mexico State, Morelos, and Oaxaca.
On 7 September 1965, immature stages of Ae. gabriel were first collected by D. Schroeder from a large tree hole in Cuernavaca county.Schick [57] described all life stages except the eggs and additional collection records were provided by Heinemann and Belkin [59] and Ortega-Morales et al. [37].In this study, Ae. gabriel was one of the most common species collected from tree holes, being well distributed in all sub-regions of Morelos where it finds favorable conditions.Immature stages of Ae. gabriel were collected from several tree holes with colored water and total shade and from discarded tires in Tlaquiltenango, Jojutla and Tepoztlán counties in association with Ae. epactius, Ae. chionotum, Ae. kompi, Ae. vargasi, Ae. aegypti, Ae. albopictus, Hg. equinus, Hg. mesodentatus, Cx. coronator, Cx. declarator, Cx. quinquefasciatus, Cx. stigmatosoma Cx. thriambus, Cx. corniger, Cx. lactator and Tx.mocetzuma.Additionally, immature stages were collected from rock holes in the Olmec ruins of Chimalactlán.In Tepoztlán, females associated with Ae. epactius, Ae. guerrero, Ae. shannoni and Hg.mesodentatus were collected biting humans during daylight hours.Aedes gabriel has been found in the states of Hidalgo, Jalisco, Mexico State, Morelos, and Zacatecas.
In 29 June 1969, immature stages of Ae. ramirezi were first collected by W.G. Downs from volcanic rock holes in Cuernavaca county.Zavortink [58] re-described fourth-instar larvae, pupae, and the male and female of this species, and additional collection records were provided by Heinemann and Belkin [59].In Morelos, immature stages of Ae. ramirezi are frequently found in volcanic rock holes, which presumably are the typical aquatic habitat for this species.During this study, immature stages of Ae. ramirezi were collected from rock holes in the Olmec ruins of Chimalactlán in association with Ae. gabriel and Cx.coronator; in this same location, adults were collected resting from dry rock holes, while females were collected biting humans diurnally in Huautla; additionally, immature stages were collected from discarded tires with colored water and abundant leaves at the bottom and total shade in Huitzilac associated with Ae. epactius, Cx. coronator, Cx. quinquefasciatus, Cx. stigmatosoma and Cs.particeps.Aedes ramirezi has been found in the states of Jalisco, Morelos, Sinaloa, Sonora, and Veracruz.

Biological and Ecological Notes for the New State Records
Biological and ecological notes for each species-group are reported here.Specific notes including the collection sites, date of collection, larval habitat, aquatic parameters, and associated species are shown in Table 3.

Genus Aedes
Of the 19 species of Aedes known from Morelos, three are reported for the first time in the state: Ae. vexans, Ae. euplocamus and Ae.vargasi.Females of Ae. vexans were collected approaching humans at a single location in one single site in Miacatlán, while immature stages of Ae. euplocamus were collected from a temporal ground pool during the rainy season.Immature stages of Aedes vargasi were commonly found in tree holes and artificial containers in the conserved regions of the state.

Genus Psorophora
The subgenus Psorophora of genus Psorophora is recorded for the first time in Morelos: Ps. cilipes and Ps.lieanata were both collected from a single site each; adults of Ps. cilipes were collected resting intra-domiciliarily, while immature stages of Ps. lineata were collected from an artificial container.

Genus Culex
The genus Culex is the most diverse group of mosquitoes in Morelos; of the twenty-one species of Culex known, six are reported for the first time in the state, and the subgenera Anoedioporpa and Micraedes are first reported here.Immature stages of Cx. restrictor were collected from a tree hole with colored water in single site, while immature stages of Cx. interrogator were commonly found in temporal ground pools and adult stages were collected resting in vegetation, it being a common species in Morelos.Immature stages of Cx. nigripalpus were collected once from a temporal ground pool; adults of Cx. tarsalis were collected resting in vegetation with total shade; while immature stages of Cx. sandrae were collected from bromeliad axils 2-3 m above the ground in a forest region of the state, and immature stages of Cx. lactator were collected once from a tree hole in a conserved area of Morelos.

Genus Toxorhynchites
The genus Toxorhynchites, subgenus Lynchiella had already been previously reported in Morelos with Tx. theobaldi (Dyar and Knab) [61].This record was misidentified with Tx. moctezuma, of which immature stages were collected from artificial containers and tree holes in one conserved forest of Morelos.
The specimens placed in the clade of the Scapularis group of Aedes (Ochlerotatus) were Ae.angustivittatus, Ae. euplocamus, Ae. shannoni and Ae.trivittatus.The voucher specimen of Ae. euplocamus was identified using the Arnell [64] key, and it fits with the Ae.condolescens Dyar and Knab description; however, since the distribution of Ae. condolescens is restricted to the Antillean region, from the Greater Antilles to the Lucayan Archipelago, and it has also been reported in Florida, USA, the presence of this species in Mexico is doubtful.For this reason, the identity of this taxon is kept under the name of Ae. euplocamus until we can obtain specimens for further morphological examination.Although the affinities of Ae. shannoni with other Ochlerotatus species are unknown, it is possible that a new species-subgroup within the Scapularis group, which contain species with rings of white scales on each segment of the hind leg, including the Mexican endemic species Ae. amateuri Ortega and Zavortink and Ae.shannoni, could be related to this group of species.
Pupa.Unknown.Female.Head: Occiput and vertex covered with narrow decumbent pale scales, inter-ocular setae dark and large, pedicel orange with few pale scales.Antenna about 0.50-0.75fore-femur length.Clypeus bare, dark-brown.Maxillary palpus about 0.25 proboscis length, three-segmented, with some pale scales.Proboscis long as fore femur, sometimes slightly longer, with pale and dark scales intermixed.Thorax: Integument of scutum yellowish or light-brown, covered with yellow bristles and yellow narrow decumbent scales, achorstichal setae absent (Figure 7).Prescutellar area dark, with dark bristles.Scutellum trilobed, with patch of creamy scales on each lobe.Integument of mesokatepisternum and mesanepimeron yellowish, mostly covered with large patch of white scales.Wing: Approximately 1.50-1.80mm, scales on veins all narrow and dark, cross veins with scales.Halter: Dark-brown scaled.All femora speckled with pale scales, sub-apical spot of white scales, tibia intermixed with dark and pale scales, tarsomeres of each leg with basal rings of white scales on each segment.Abdomen: All tergum covered with dark scales but with some white scales, conspicuous basal bands of white scales on all terga, sternum with white scales (Figure 8).
Bionomics.Culiseta dugesi have been collected in four Mexican states: three of these were Guanajuato (lectotype), Mexico City, and Huitzilac municipality, Morelos, where adult females were collected approaching humans diurnally; associated species in this site were Ae.kompi and Cx.sp., while immature stages were collected from an abandoned plastic bucket filled with rain water, in conditions of total shade and with some leaves at the bottom; associated species were Cx.arizonensis and Cs.particeps; some adults of Cs. dugesi were collected resting inside the same bucket.The fourth state was Querétaro, where this species was previously reported as Culiseta n. sp. in association with Cx. thriambus and Tx.moctezuma [34].Immature stages of Cs. dugesi could occur in natural containers such as tree holes and/or volcanic rock holes at ground level.The medical importance of Cs. dugesi is unknown.
Distribution.Culiseta dugesi has been collected in these locations: the mountains and plains of the north of Guanajuato, Guanajuato State, belonging to the Central Plateau; the northern region of the state of Morelos in Huitzilac county and Mexico City, belonging to the sub-region Lakes and Volcanoes of Anahuac, of the Neo-volcanic Axis (Figure 9); and in Pinal de Amoles county, Querétaro, belonging to the Huaesteco Carso of the Sierra Madre Oriental.Culiseta dugesi could occur in the forested regions of the states between Guanajuato and Querétaro such as Mexico State, Hidalgo, and northeastern Michoacán; all these states share physiographical conditions such as mountain forest regions above 2000 m of elevation, within the regions of Central Plateau, Neo-volcanic Axis and the Sierra Madre Oriental.Some of the species reported in Morelos are of medical and veterinary importance because they are vectors of pathogens causing diseases.In Table 4 the most important public health species that occur in Morelos are listed.Additionally, although the medical importance of some species is unknown, we include here the species that were collected biting humans diurnally with conditions of partial shade.Based on our collection records and the known distributions of the mosquito species collected in Morelos, two groups of species are recognized.Some species of each group have similar geographical distributions, reaching their northern or southern distributional limits in the state.

Group 1
Species that occur in mountain regions in south-central Mexico and reach their southernmost distributional limit in Morelos include Ae. gabriel and Cx.apicalis.Immature stages of Ae. gabriel commonly develop in tree holes, although it has been found in volcanic rock holes.Ae. gabriel is a Mexican endemic species that has been reported in the states of Morelos, Jalisco, Zacatecas [59] and Hidalgo [36].Culex aplicalis is included in this group because it occurs in the Nearctic region, extending from western USA and southern Texas [67] into Mexico throughout the sub-region of Lakes and Volcanoes of Anahuac in Morelos, where it reaches its southernmost distributional limit.

Group 2
Mexican endemic species that occur in mountain regions in the central-southern area of the country and reach their northernmost distributional limit in Morelos include Ae. chionotum and Cx.sandrae.Immature stages of Ae. chionotum develop in tree holes, and it has been reported in the states of Morelos and Oaxaca [58], while immature stages of Cx. sandrae develop in bromeliad axils and it has been reported in the states of Guerrero and Oaxaca [72].Also included in this group are species that occur in the Neotropical region that extends into Mexico, and in Morelos they reach their northernmost distributional limit, including An. parapunctipennis, Hg. anastasionis, Ps. lineata and Cx.limacifer.Except for Hg.anastasionis, which develops in tree holes, all those species develop in ground pools.All of the pools are commonly full with summer rain, but some aquatic habitats could be permanent water bodies such as lakes and swamps.

Species Not Collected during Our Collection Trips
The 12 species of this group were not collected in the present study, but records were obtained from literature reports including those from Vargas and Martínez-Palacios [54] of Anopheles parapunctipennis.This species has been reported in some states of southeastern Mexico (Chiapas, Oaxaca, and Veracruz) and Guatemala, but has also been reported in central Mexico in Nearctic environments in the states of Hidalgo [73], Puebla and Veracruz [74].Although An. parapunctipennis is found at elevations above 2500 m, in Morelos its presence is uncommon and it is considered a rare species.
Vargas [55] encountered Culex salinarius, Cx. conspirator, Cx. erraticus, Cx. iolambdis, Cx. limacifer, Cx. apicalis, Ur. coatzacoalcos, and Ur.sapphirina.All those species develop in temporary ponds of rainwater at ground level with emerging aquatic vegetation.This type of aquatic habitat was not found frequently during our field trips.Culex salinarius is a common species that has been frequently reported in coastal regions of various states of Mexico.In central states, far from the coastal regions, this species is uncommon and can be confused in its larval stage with Cx. nigripalpus and/or Cx. erythrothorax.Culex conspirator, Cx. erraticus, Cx. iolambdis and Cx.limacifer are species that are common in tropical coastal regions; these could be found in temporary pools and ponds in southern Morelos, bordering Guerrero state, where environmental conditions are favorable to their development.In Mexico, species of the subgenus Neoculex can be commonly found in natural and artificial containers in temperate regions, particularly in the north and middle of Mexico, where the environmental conditions are related to the Nearctic region.Culex aplicalis could reach its southernmost distributional rank in Morelos.Although Ur. coatzacoalcos was not found during our collections, this species must be common during the rainy season in the southern part of Morelos, while Ur.sapphirina is one of the most common species in the genus Uranotaenia in the Nearctic region of Mexico.This species has been reported in many states of Mexico, but, however, this was also not found during our collections.
Díaz-Nájera and Vargas [56] reported finding Aedes sexlineatus, Ae. taeniorhynchus, and Psorophora columbiae.In Mexico, six species within the subgenus Howardina of Aedes are found, of which four are present in Morelos.The immature stages of all Mexican species of Howardina typically develop in epiphytic bromeliad axils, which grow on woody trees in oak forest regions.Since species of Howardina were reported for the first time in Morelos, large areas of oak forest have been deforested in Morelos, especially in the north and around the capital city of Cuernavaca, causing a conversion of the habitat decreasing the population of epiphytic bromeliads that grew naturally in this region.Possibly Ae. sexlineatus has decreased its population due to deforestation.Aedes taeniorhynchus and Ps.columbiae are common species in the coastal regions of Mexico; those species are problematic in touristic areas because of their high numbers and persistence in biting humans.In Morelos, those species were not found and they are possibly uncommon species.
Ibáñez-Bernal and Martínez-Campos [60] found Cx. bidens.This tropical species has been previously reported from Mexico to Argentina.In Mexico this species has been reported in different states where apparently it seems common in tropical regions of Mexico.However, it was not found in our collections.

Species Names Removed from Morelos
Some species reported in Morelos in early publications are not included in this study because their names have changed since they were originally reported.The names removed from the list of Morelos fauna and the reasons for their removal are explained here.Reasons for the removal of the following: Cx. fatigans Wiedemann reported by Martini [52]; Ae. terrens (Walker), and Cx.virgultus Theobald reported by Vargas [55]; Ae. atropalpus (Coquillett); and Cx.peus Speiser reported by Díaz-Nájera and Vargas [56], are explained in a previous publication on the mosquitoes of Tamaulipas by Ortega-Morales et al. [30].Reasons for the removal of Tx. theobaldi (Dyar and Knab) reported by Villegas-Trejo et al. [61] are given a previous publication on the mosquitoes of Nuevo León by Ortega-Morales et al. [38].
Aedes triseriatus (Say) and Cs.maccrackenae Dyar and Knab were previously reported in Morelos by Vargas [55].However, no species of the Triseriatus group of Aedes has been reported as far south as Morelos, with the only exception being Ae.zoosophus Dyar and Knab which has been previously reported in Guerrero [75].Records of Ae. triseriatus in Morelos were possibly misidentified with species within the Kompi and/or Terrens groups.Culiseta maccrackenae was reduced to synonymy with Cs. particeps by Stone [66].

Mosquito Diversity in Morelos and Mexico
With the addition of the new mosquito records and the new species reported in Morelos, there are currently 58 species known in the state.Morelos ranks sixth with the greatest diversity of species of the eleven Mexican states that have been systematically inventoried for mosquito species.With the addition of Culiseta dugesi to the list of mosquito species in Mexico City and Mexico, there are currently 29 species and 248 known species, respectively.

DNA Barcoding
The DNA barcodes sequences of specimens we analyzed in this study grouped together in the same clade, although we detected species with two different BINs, e.g., Cs. particeps and Cx.stigmatosoma, which might be indicative of cryptic diversity.This agrees with results obtained by [4,34,35] during integrative studies to delineate the mosquito fauna in Mexico as well in other insect groups.The specimens we here identified as Cs.dugesi show an interspecific genetic divergence of 3.77% in comparison with Cs. participes and are separated with strong support values from those identified as Cs.particeps.This supports our hypothesis that they represent a different species.The latter finding is also supported by the different morphological traits found in the adult female general coloration and larval stage.

Figure 1 .
Figure 1.Physiography of Morelos state.Map originally elaborated for this article.

Table 1 .
Description of the physiography of Morelos and list of municipalities sampled [41].

Figure 1 .
Figure 1.Physiography of Morelos state.Map originally elaborated for this article.

Figure 3 .Figure 3 .
Figure 3. Bayesian phylogenetic tree of COI DNA barcode of the mosquitoes of Morelos.Red box shows the Culiseta dugesi sequences.

Figure 6 .
Figure 6.Immature stages of Culiseta dugesi (A) Arrow point to the Setae 4-C double; (B) siphon with row of single spicules distal to pecten.

Figure 7 .
Figure 7. Lateral view of adult female of Culiseta dugesi.Arrows point to the integument of scutum, mesokatepisternum and mesanepimeton which is yellowish and light-brown.

Figure 6 . 26 Figure 6 .
Figure 6.Immature stages of Culiseta dugesi (A) Arrow point to the Setae 4-C double; (B) siphon with row of single spicules distal to pecten.

Figure 7 .
Figure 7. Lateral view of adult female of Culiseta dugesi.Arrows point to the integument of scutum, mesokatepisternum and mesanepimeton which is yellowish and light-brown.Figure 7. Lateral view of adult female of Culiseta dugesi.Arrows point to the integument of scutum, mesokatepisternum and mesanepimeton which is yellowish and light-brown.

Figure 7 .
Figure 7. Lateral view of adult female of Culiseta dugesi.Arrows point to the integument of scutum, mesokatepisternum and mesanepimeton which is yellowish and light-brown.Figure 7. Lateral view of adult female of Culiseta dugesi.Arrows point to the integument of scutum, mesokatepisternum and mesanepimeton which is yellowish and light-brown.

Figure 8 .
Figure 8. Dorsal view of adult female of Culiseta dugesi.Arrrow point to the abdomen with tergum covered with dark scales and some white scales, conspicuous basal bands of white scales on all segments.

Figure 9 .
Figure 9. Collection site of Culiseta dugesi showing the conserved vegetation of temperate forest.The site is near the "Lagoons of Zempoala" National Park in Huitizilac, Morelos, Mexico.

Figure 8 .
Figure 8. Dorsal view of adult female of Culiseta dugesi.Arrow point to the abdomen with tergum covered with dark scales and some white scales, conspicuous basal bands of white scales on all segments.

Figure 8 .
Figure 8. Dorsal view of adult female of Culiseta dugesi.Arrrow point to the abdomen with tergum covered with dark scales and some white scales, conspicuous basal bands of white scales on all segments.

Figure 9 .
Figure 9. Collection site of Culiseta dugesi showing the conserved vegetation of temperate forest.The site is near the "Lagoons of Zempoala" National Park in Huitizilac, Morelos, Mexico.Figure 9. Collection site of Culiseta dugesi showing the conserved vegetation of temperate forest.The site is near the "Lagoons of Zempoala" National Park in Huitizilac, Morelos, Mexico.

Figure 9 .
Figure 9. Collection site of Culiseta dugesi showing the conserved vegetation of temperate forest.The site is near the "Lagoons of Zempoala" National Park in Huitizilac, Morelos, Mexico.Figure 9. Collection site of Culiseta dugesi showing the conserved vegetation of temperate forest.The site is near the "Lagoons of Zempoala" National Park in Huitizilac, Morelos, Mexico.Etymology.This species was dedicated to Alfredo Dugès (1826-1910), Mexican zoologist and botanist of French origin.

Table 2 .
Checklist of the mosquito species of Morelos.