Glenognatha gouldi Cabra-García & Brescovit 2016
- Dataset
- Revision and phylogenetic analysis of the orb-weaving spider genus Glenognatha Simon, 1887 (Araneae, Tetragnathidae)
- Rank
- SPECIES
- Published in
- Jimmy Cabra-García, Antonio D. Brescovit (2016): Revision and phylogenetic analysis of the orb-weaving spider genus Glenognatha Simon, 1887 (Araneae, Tetragnathidae). Zootaxa 4069 (1): 1-183, DOI: 10.11646/zootaxa.4069.1.1
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Arachnida
- order
- Araneae
- family
- Tetragnathidae
- genus
- Glenognatha
- species
- Glenognatha gouldi
description
Male (holotype, USNM). Habitus as in Figures 114 A – D. Carapace dark brown, darker along furrows. Sternum dark brown. Abdomen dorsally with two diffused longitudinal black bands in the anterior region and thin transversal black bands in its posterior region. Silver guanine spots scattered in dorsal and lateral surfaces. Venter with a median black band surrounded by silver guanine spots. Tracheal spiracle well-sclerotized. Legs yellowbrownish. Total length 3.95. Cephalothorax 1.80 long, 1.35 wide, 0.90 high. Abdomen 2.10 long, 1.65 wide, 1.55 high. Sternum 0.90 long, 0.87 wide. Eye diameters and interdistances: AME 0.09. ALE 0.10. PME 0.10. PLE 0.07. AME-AME 0.1, AME-ALE 0.20, PME-PME 0.16, PME-PLE 0.20, ALE-PLE 0.01. Clypeus height 2.10. Chelicerae dark brown. Three promarginal and five retromarginal teeth (Figs. 115 A – C). Ret 2 strongly curved (Fig. 115 B). Leg measurements: I: femur 2.10, patella 0.65, tibia 2.02, metatarsus 1.55, tarsus 0.82, total 7.15; II: 1.90, 0.62, 1.80, 1.60, 0.82; III: 1.35, 0.47, 1.00, 0.97, 0.55, 4.35; IV: 1.77, 0.47, 1.50, 1.30, 0.62, 5.67. Metatarsus IV with one trichobothrium. DTS 0.45. DTE 0.90. Palp as in Figures 116 E – H. Conductor and cymbium slender (Figs. 116 A, E – H). Embolus tip nearly 180 º curved (Figs. 116 A, G). Female (paratype, USNM 00879002). Coloration and general habitus as in male (Figs. 114 E – H). Cephalothorax, abdomen and legs clearer than the male. Abdomen without clearly defined black bands. Silver guanine spots uniformly scattered in dorsal and lateral surfaces. Venter with a median diffused dark band clearer towards the petiole and surrounded by silver guanine spots. Tracheal spiracle well-sclerotized. Total length 4.25. Cephalothorax 1.67 long, 1.42 wide, 1.12 high. Abdomen 2.50 long, 2.02 wide, 1.87 high. Sternum 0.90 long, 0.90 wide. Eye diameters and interdistances: AME 0.09. ALE 0.10. PME 0.10. PLE 0.08. AME-AME 0.07, AME-ALE 0.17, PME-PME 0.13, PME-PLE 0.17, ALE-PLE 0.01. Clypeus height 1.90. Chelicerae brown. Three promarginal and four retromarginal teeth. (Figs. 115 D – F). Leg measurements: I: femur 1.85, patella 0.62, tibia 1.77, metatarsus 1.50, tarsus 0.81, total 6.56; II: 1.77, 0.57, 1.65, 1.42, 0.78, 6.2; III: 1.25, 0.42, 0.87, 0.82, 0.50, 3.87; IV: 1.70, 0.40, 1.27, 1.22, 0.60, 5.20. Metatarsus IV with one trichobothrium. DTS 0.47. DTE 0.56. Genitalia without spermathecae and copulatory ducts (Fig. 117). UE with a median projection (Fig. 117 A).
description
Types. Male holotype from Nogales, Santa Cruz Co., Arizona, United States of America, [31 º 20´N, 110 º 56´W], elev. [1183 m], 1. ix. 1991, R. L. Edwards leg., deposited in USNM ENT 00879001; Paratypes: 2 ♂ 1 ♀ from the type locality, same data as the holotype, deposited in USNM ENT 00879002; 1 ♂ from Lerma, Mexico, [19 º 17´N, 99 º 43´W], elev. [2400 m], 25. vi. 1941, A. M. & L. I. Davis leg., deposited in AMNH.
diagnosis
Diagnosis. Males of G. gouldi resemble those of G. emertoni, G. minuta and G. timbira by the enlarged Ret 2 and Ret 3 (Figs. 115 B – C). G. gouldi can be distinguished from the latter three species by the nearly 180 º curved tip of the embolus (Figs. 116 A, G), and the strongly curved Ret 2 (Fig. 115 B). Females can be distinguished from those of G. emertoni and G. minuta by the absence of spermathecae (Fig. 117) and from those of G. timbira by the Prt 1 base not enlarged (Fig. 115 D).
distribution
Distribution. Known from Arizona state in United States of America and Mexico state in Mexico (Fig. 137).
etymology
Etymology. The species epithet is in honor of Stephen Jay Gould (1941 – 2002), an extraordinary paleontologist, evolutionary biologist and historian of science. The name is a noun in genitive.