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Arthropoda, Volume 1, Issue 3 (September 2023) – 4 articles

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6 pages, 268 KiB  
Communication
Taxonomic Notes and Nomenclatural Corrections on Four Sphaeromatid Isopod Generic Names (Crustacea: Isopoda: Sphaeromatidae)
by Christopher B. Boyko
Arthropoda 2023, 1(3), 359-364; https://doi.org/10.3390/arthropoda1030013 - 30 Aug 2023
Cited by 1 | Viewed by 1490
Abstract
Details regarding the synonymy of Nesaea Leach, 1814 and Dynamene Leach, 1814 are given and a type species is selected for Dynamene. The genus Heteruropus Verhoeff, 1942 is shown to be the senior objective synonym of Harrieta Kensley, 1987 and an expanded [...] Read more.
Details regarding the synonymy of Nesaea Leach, 1814 and Dynamene Leach, 1814 are given and a type species is selected for Dynamene. The genus Heteruropus Verhoeff, 1942 is shown to be the senior objective synonym of Harrieta Kensley, 1987 and an expanded synonymy list for the type species, Heteruropus faxoni (Richardson, 1905) is provided. Full article
9 pages, 2247 KiB  
Article
Lithoscaptus aquarius sp. nov. (Decapoda: Cryptochiridae) Described from a Catalaphyllia jardinei (Scleractinia) out of the Aquarium Trade
by Sancia E. T. van der Meij
Arthropoda 2023, 1(3), 350-358; https://doi.org/10.3390/arthropoda1030012 - 31 Jul 2023
Cited by 1 | Viewed by 2320
Abstract
A new species of gall crab collected from elegance coral, Catalaphyllia jardinei, is described in this paper. The male holotype was collected from a reef tank in Germany in 2016, and it is described here using integrative taxonomy. This species, named Lithoscaptus aquarius [...] Read more.
A new species of gall crab collected from elegance coral, Catalaphyllia jardinei, is described in this paper. The male holotype was collected from a reef tank in Germany in 2016, and it is described here using integrative taxonomy. This species, named Lithoscaptus aquarius sp. nov., is the thirteenth assigned to the genus. It is morphologically and phylogenetically closest to Lithoscaptus semperi, a cryptochirid associated with Trachyphyllia geoffroyi. Like L. semperi, it has a large, broad W-shaped depression on the anterior half of the carapace, but the carapace surface of L. aquarius sp. nov. is smooth overall, lacking spines or tubercles. This new species is so named because it was found in a reef tank after searching in vain for material during fieldwork campaigns over the course of several years. Full article
(This article belongs to the Special Issue Alpha-Level Taxonomy of Decapod Crustaceans)
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8 pages, 1284 KiB  
Brief Report
Age-Resilient Stickiness of Capture Threads
by Marco Meyer and Anna-Christin Joel
Arthropoda 2023, 1(3), 342-349; https://doi.org/10.3390/arthropoda1030011 - 6 Jul 2023
Cited by 2 | Viewed by 1704
Abstract
Typical orb webs with glue droplets are renewed regularly, sometimes multiple times per night. Such behaviour, however, is rarely found with cribellate spiders. The adhesive portion of their capture threads consist of nanofibres instead of glue, and the fibres interact with the cuticular [...] Read more.
Typical orb webs with glue droplets are renewed regularly, sometimes multiple times per night. Such behaviour, however, is rarely found with cribellate spiders. The adhesive portion of their capture threads consist of nanofibres instead of glue, and the fibres interact with the cuticular hydrocarbons (CHCs) of their insect prey for adhesion. Many of these spiders often only add new threads to their existing webs instead of completely reconstructing them. In testing the adhesion force of aged capture threads of three different cribellate species, we indeed did not observe an overall decline in adhesion force, even after a period of over a year. This is in line with the (formulated but so far never tested) hypothesis that when comparing gluey capture threads to nanofibrous ones, one of the benefits of cribellate capture threads could be their notable resistance to drying out or other ageing processes. Full article
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274 pages, 394405 KiB  
Review
Review of the Spider Genus Linothele (Mygalomorphae, Dipluridae) from Ecuador—An Exceptional Case of Speciation in the Andes
by Nadine Dupérré, Elicio Tapia and Jason E. Bond
Arthropoda 2023, 1(3), 68-341; https://doi.org/10.3390/arthropoda1030010 - 30 Jun 2023
Cited by 7 | Viewed by 3902
Abstract
The genus Linothele (Araneae: Dipluridae) from Ecuador is reviewed. A total of 38 new species are described; from the Andes: L. alausi n. sp. (♀), L. anabellecitae n. sp. (♀♂), L. angamarca n. sp. (♀♂), L. banos n. sp. (♀♂), L. canirasi n. sp. [...] Read more.
The genus Linothele (Araneae: Dipluridae) from Ecuador is reviewed. A total of 38 new species are described; from the Andes: L. alausi n. sp. (♀), L. anabellecitae n. sp. (♀♂), L. angamarca n. sp. (♀♂), L. banos n. sp. (♀♂), L. canirasi n. sp. (♀), L. carchi n. sp. (♀), L. cayambe n. sp. (♀♂), L. cuencana n. sp. (♀♂), L. guacamayos n. sp. (♀), L. gualaquiza n. sp. (♀), L. guallupe n. sp. (♀), L. ilinizas n. sp. (♀♂), L. ireneae n. sp. (♀), L. jarrini n. sp. (♀), L. javieri n. sp. (♀), L. kaysi n. sp. (♀), L. lacocha n. sp. (♀), L. lloa n. sp. (♀♂), L. milleri n. sp. (♀♂), L. molleturo n. sp. (♀), L. otokiki n. sp. (♀), L. peguche n. sp. (♀♂), L. podocarpus n. sp. (♀), L. pomona n. sp. (♀), L. pristirana n. sp. (♀♂), L. pseudoquori n. sp. (♀♂), L. rionegro n. sp. (♀♂), L. sigchila n. sp. (♀♂), L. uvalino n. sp. (♀), L. victoria n. sp. (♀), L. yunguilla n. sp. (♀♂); from the Pacific region: L. costenita n. sp. (♀♂), L. troncal n. sp. (♀); and, from the Amazonian region: L. amazonica n. sp. (♀), L. archidona n. sp. (♀), L. condor n. sp. (♀♂), L. jatunsacha n. sp. (♀), L. otoyacu n. sp. (♀♂). All previously known Ecuadorian species are re-illustrated, and the males of L. cavicola, L. pukachumpi, and L. tsachilas are described for the first time. The geographical distribution of the genus Linothele through mainland Ecuador is discussed, and short-range endemic species are proposed. Distribution maps are provided for all species found in Ecuador. Finally, the synonymy of L. megatheloides under L. sericata is rejected. Full article
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