Tayshaneta microps
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Ordo: Araneae
Familia: Leptonetidae
Genus: Tayshaneta
Name
Tayshaneta microps (Gertsch, 1974) – Wikispecies link – Pensoft Profile
- Leptoneta microps Gertsch 1974[1]: 171–172.
- Neoleptoneta microps (Gertsch, 1974): Brignoli 1977[2]: 216; Platnick 1986[3]: 8; Reddell 1988: 34; Cokendolpher 2004[4]: 64; Reddell and Cokendolpher 2004[5]: 86; Platnick 2010[6].
- Tayshaneta microps (Gertsch, 1974): Ledford et al. 2011[7].
Type data
Female holotype from Government Canyon Bat Cave, 5 miles SW Helotes, Bexar County, Texas, 11-August-1965, J. Reddell, J. Fish (AMNH, examined).
Notes
Tayshaneta microps was listed under the Endangered Species Act in 2001 (U. S. Fish and Wildlife, 2010) due to pressure from urbanization in areas surrounding San Antonio, Texas. Two records are currently reported for the species, Government Canyon Bat Cave and Surprise Sink, both of which are in Northern Bexar County. The two specimens from Surprise Sink were examined in detail and while they share reduced eyes similar to Tayshaneta microps, both specimens are immature cannot be confirmed as this species in the absence of associated males.
Other material examined
USA: Texas: Bexar County: Government Canyon Bat Cave, 5 miles SW Helotes, 24-April-1993, J. Reddell, M. Reyes, 29.56N, 98.76W, 1 ♀, (TTU); Government Canyon Bat Cave, 5 miles SW Helotes, 24-May-1993, J. Reddell, M. Reyes, 29.56N, 98.76W, 1 ♀, (TMM); Government Canyon Bat Cave, 5 miles SW Helotes, 24-May-1998, J. Reddell, M. Reyes, 29.56N, 98.76W, 4 ♀, (TMM); Government Canyon Bat Cave, 5 miles SW Helotes, 12-March-2005, P. Paquin, 29.56N, 98.76W, 2 ♂, 2 ♀, 6 juvs, (TMM); Government Canyon Bat Cave, 5 miles SW Helotes, 12-November-2009, J. Ledford, M. Sanders, N. Lake, 29.56N, 98.76W, 1 ♂, (TMM).
Diagnosis
Tayshaneta microps may be separated from all Tayshaneta species, except Tayshaneta bullis and Tayshaneta madla, by having males with an elongate retrolateral tibial spine (RTS, Figs 31F, 32F), more than 0.5× length of the palpal tarsus and lacking a ventral sclerite (Figs 42B, E). Separated from Tayshaneta bullis and Tayshaneta madla by the unique shape of the embolus (Fig. 43D).
Description
Complete description of female in Gertsch (1974[1]: 171–172). Habitus of male and female in Figs 22A–F, scanning electron micrographs of male genitalia in Figs 43A–F and female genitalia in Fig. 53E.
Male. (Government Canyon Bat Cave). Body length 1.27, carapace 0.56 long, 0.47 wide, length 1.19× width. Carapace light brown, sparsely setose; eyes greatly reduced (Figs 10A–B; 22A–C). Legs elongate and thin, femur I 1.64× carapace length, covered in fine setae with few scattered spines. Palpal tarsus entire, tapering apically (Fig. 31C); retrolateral tibial spine elongate, sculptured throughout, length 0.50× tarsus length (Fig. 31C, 32C). Bulb suboval, length 1.76× width; embolus distally oval, curved and with basal tooth (E, Fig. 43D), length 2.0× width. Abdomen light brown, without pattern, 0.70 long, 0.50 wide, covered in fine setae.
Variation (n = 6). Total length 1.25–1.40; carapace length 1.20–1.52 × carapace width; length femur I 1.0–1.4 × carapace width.
Natural History
One adult male specimen was collected for DNA extraction and scanning electron microscopy in November 2009. Although only a single male was found, immature and female specimens were commonly observed in small sheet webs under breakdown material and at the base of walls on opposite sides of the cave entrance.
Distribution
Known only from Government Canyon Bat Cave, Bexar County, Texas (Fig. 59).
Taxon Treatment
- Ledford, J; Paquin, P; Cokendolpher, J; Campbell, J; Griswold, C; 2012: Systematics, conservation and morphology of the spider genus Tayshaneta (Araneae, Leptonetidae) in Central Texas Caves ZooKeys, 167: 1-102. doi
Other References
- ↑ 1.0 1.1 Gertsch W (1974) The spider family Leptonetidae in North America. Journal of Arachnology 1: 145-203.
- ↑ Brignoli P (1977) Spiders of Mexico, III. A new leptonetid from Oaxaca (Araneae, Leptonetidae). Quaderna Accademia Nazionale dei Lincei 171 (3): 213-218.
- ↑ Platnick N (1986) On the tibial and patellar glands, relationships and American genera of the spider family Leptonetidae (Arachnida, Araneae). American Museum Novitates 2855: 1-16.
- ↑ Cokendolpher J (2004) A new Neoleptoneta spider from a cave in Camp Bullis, Bexar County, Texas (Araneae: Leptonetidae). Texas Memorial Museum Speleological Monographs 6: 63-69.
- ↑ Reddell J, Cokendolpher J (2004) The cave spiders (Araneae) of Bexar and Comal Counties, Texas. Texas Memorial Museum Speleological Monographs, 6. Studies on the cave and endogean fauna of North America IV:75–94.
- ↑ Platnick N (2010) The World Spider Catalog v. 11.0. Maintained at the American Museum of Natural History. http://www.research.amnh.org/iz/spiders/catalog [accessed 14 January 2010]
- ↑ Ledford J, Paquin P, Cokendolpher J, Campbell J, Roderick G, Gillespie R, Griswold C (2011) Systematics and evolution of the spider genus Neoleptoneta (Araneae: Leptonetidae) with a discussion of the morphology and relationships for the North American Leptonetidae. Invertebrate Systematics 25: 334-388. doi: 10.1071/IS11014
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