Glenognatha emertoni Simon, 1887,

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), pp. 1-183: 153-158

publication ID

http://doi.org/10.11646/zootaxa.4069.1.1

publication LSID

lsid:zoobank.org:pub:52FC658C-78C7-49FC-9961-8AC43CA03101

persistent identifier

http://treatment.plazi.org/id/8E0E8F67-7D8A-FF15-ACBA-0CA5FAB5D376

treatment provided by

Plazi

scientific name

Glenognatha emertoni Simon, 1887
status

 

Glenognatha emertoni Simon, 1887 

( Figs. 126–129View FIGURE 126View FIGURE 127View FIGURE 128View FIGURE 129, 137View FIGURE 137)

Glenognatha emertoni Simon, 1887: 194  (male syntypes from Arizona, United States of America, deposited in MNHN, examined); Simon 1894: 717, figs. 790–791; Banks 1913: 180, pl. 2, fig. 22; Levi 1980: 66, figs. 255–271; Cabra-García et al. 2014: 1029, figs. 1F, 2D, 2G, 4B, 5F –G, 7E, 9C –D; World Spider Catalog 2015.

Diagnosis. Males of G. emertoni  are distinguished from all other congeneric species by the presence of a mesally oriented projection located in the distal margin of the cheliceral basal segment ( Fig. 127 AView FIGURE 127). Females resemble those of G. minuta  in having an anterior cheliceral bulge ( Fig. 127FView FIGURE 127), but differ by the reduced size of the spermathecae in relation with the uterus externus ( Figs. 129 A –CView FIGURE 129) and the apical position of the cheliceral bulge ( Fig. 127FView FIGURE 127).

Description. Male and female described by Levi (1980). Additional data.

Male ( USA, Arizona, AMNH). Habitus as in Figures 126 A –DView FIGURE 126. Tracheal spiracle well-sclerotized. Total length 4.25. Cephalothorax 2.07 long, 1.57 wide, 1.15 high. Abdomen 2.32 long, 1.90 wide, 1.80 high. Sternum 1.00 long, 1.00 wide. Eye diameters and interdistances: AME 0.10, ALE 0.07, PME 0.12, PLE 0.09. AME-AME 0.1, AME- ALE 0.18, PME-PME 0.18, PME-PLE 0.19, ALE-PLE 0.01. Clypeus height 2.30. Three promarginal and four retromarginal teeth ( Figs. 127 A –CView FIGURE 127). Leg measurements: I: femur 2.80, patella 0.75, tibia 2.92, metatarsus 2.57, tarsus 0.82, total 9.87; II: 2.67, 0.75, 2.80, 2.40, 1.12, 9.75; III: 1.65, 0.50, 1.47, 1.50, 0.72, 5.85; IV: 2.27, 0.55, 2.00, 1.90, 0.90, 7.65. Metatarsus IV with one trichobothrium. DTS 0.27. DTE 0.62. Palp as in Figures 128E –HView FIGURE 128. Embolus with a nearly 90º curved tip ( Fig. 128GView FIGURE 128).

Female ( USA, Arizona, AMNH). Habitus as in Figures 126E –HView FIGURE 126. Tracheal spiracle well-sclerotized. Total length 5.05. Cephalothorax 2.45 long, 1.92 wide, 1.55 high. Abdomen 2.90 long, 2.35 wide, 2.30 high. Sternum 1.32 long, 1.20 wide. Eye diameters and interdistances: AME 0.10, ALE 0.11, PME 0.13, PLE 0.10. AME-AME 0.15, AME-ALE 0.22, PME-PME 0.24, PME-PLE 0.27, ALE-PLE 0.01. Clypeus height 2.9. Three promarginal and four retromarginal teeth ( Figs. 127D –FView FIGURE 127). Leg measurements: I: femur 3.00, patella 0.70, tibia 3.25, metatarsus 2.77, tarsus 1.30, total 11.07; II: 2.95, 0.90, 2.92, 2.50, 1.22, 10.5; III: 2.17, 0.62, 1.62, 1.65, 0.85, 6.92; IV: 2.65, 0.67, 2.17, 2.02, 0.92, 8.45. Metatarsus IV with one trichobothrium. DTS 0.37. DTE 0.62. Tracheal system as in Figures 129F –IView FIGURE 129. Spinnerets as in Figures 129J –LView FIGURE 129. Genitalia with strongly reduced spermathecae and copulatory ducts ( Figs. 129 A –EView FIGURE 129). UE with a median projection ( Fig. 129 AView FIGURE 129).

Variation. Male total length 3.8–5.2 (N = 6; average 4.6), cephalothorax length 1.8–2.3 (N = 6; average 2.1), femur I length 2.8–3.2 (N = 6; average 2.9). Female total length 4.0–5.1 (N = 10; average 4.5), cephalothorax length 1.8–2.6 (N = 10; average 2.1), femur I length 2.4–3.25 (N = 10; average 2.7).

Distribution. Known in Arizona and New Mexico states in United States of America ( Fig. 137View FIGURE 137).

Additional material examined (N = 22). UNITED STATES OF AMERICA: Arizona: Big Rock Camp., Madera Can., [31º43´N, 110º52´W], elev. [2100m], 10.ix.1941, W. Ivie leg., 1♀ ( AMNH)GoogleMaps  ; 1♀ 1♂ (AMNH); Wet Canyon For. Camp, Graham Mts. , [32º42´N, 109º52´W], elev. [2000m], 13.ix.1952, B. Malkin leg., 1♂ ( AMNH)GoogleMaps  ; Southwestern Res. Sta. , 5 miles west portal, [31º53´N, 109º12´W], elev. [1645m], 2–19.v.1956, M. Statham leg.,GoogleMaps 

2♀ 1♂ ( AMNH); 6–20.vii.1955, W. J. Gertsch leg., 3♀ ( AMNH); 3mi.w. Paradise Chiricahua Mts. , [31º55´N, 109º22´W], elev. [1989m], 9.ix.1950, W. J. Gertsch leg., 1♀ ( AMNH)GoogleMaps  ; SWRS 5View Materials mi. W. Portal Cochise County, [31º53´N, 109º12´W], elev. [1645m], 17.vii.1964, JGoogleMaps  . A. Woods leg., 1♀ ( AMNH); Santa Rita Mts., Madera Canyon , [31º43´N, 110º52´W], elev. [1552m], 16.vii.1940, W. J. Gertsch leg., 1♀ ( AMNH); Cochise Co., Chiricahua MtsGoogleMaps  . SWRS, [31º49´N, 109º28´W], elev. [1700m], 14.vii.1966, J. Beatty leg., (under rock in dry stream), 2♀ (MCZ 64709); Madera Can. Santa Rita Mts. , 31º43´N, 110º52´W, elev. [2100m], 8.ix.1941, W. Ivie leg., 3♀ 2♂ ( MCZ 125499View Materials)GoogleMaps  ; 1♂ (MCZ 125500). New Mexico: Whitewater Canyon 4 mi. N. E. Glenwood Catron Co., [33º21´N, 108º3´ W], elev. [2050m], 20.viii.1952, H. R. Leech & J. W. Green leg., 1♂ ( AMNH).GoogleMaps 

AMNH

American Museum of Natural History

DTE

Centro de Investigaciones Cient�ficas y Transferencia de Tecnolog�a a la Producci�n (CICyTTP-CONICET)

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Tetragnathidae

Genus

Glenognatha

Loc

Glenognatha emertoni Simon, 1887

Jimmy Cabra-García & Antonio D. Brescovit 2016
2016
Loc

Glenognatha emertoni

Cabra-Garcia 2014: 1029
Levi 1980: 66
Banks 1913: 180
Simon 1894: 717
Simon 1887: 194
1894