Glenognatha caparu, Cabra-García & Brescovit, 2016

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 : 85-89

publication ID

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

publication LSID

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

DOI

https://doi.org/10.5281/zenodo.5666950

persistent identifier

https://treatment.plazi.org/id/8E0E8F67-7D46-FFD0-ACBA-0EDDFCE0D41E

treatment provided by

Plazi

scientific name

Glenognatha caparu
status

new species

Glenognatha caparu   new species

( Figs. 67–70 View FIGURE 67 View FIGURE 68 View FIGURE 69 View FIGURE 70 , 133 View FIGURE 133 )

Types. Male holotype from Estación Biológica Caparu, Lago Taraira. Taraira, Vaupés, Colombia, [1º4´S, 69º29´W], elev. [128m], 11.iv.2004, J. Pinzón leg., deposited in ICN 5979 View Materials GoogleMaps   ; Paratypes: 2♂ 1♀ from the type locality, same data as the holotype, deposited in ICN 5980 View Materials GoogleMaps   ; 1♂ 1♀ from Igarapé forest of upper Rio Yaciba, [Amazonas], Venezuela, [1º14´N, 66º44´W], elev. [109m], 7.xii.1953, W. M. Beebe leg., deposited in AMNH GoogleMaps   ; 1 ♂ from Estação Científica Ferreira Penna , Melgaço, Pará, Brazil, 1º43´21.6´´S, 51º25´51.2´´W, elev. [40m], 1993– 2009?, A. B. Bonaldo leg., deposited in MPEG 19083 View Materials GoogleMaps   ; 1♂ from 15 km E Puerto Maldonado , Madre de Dios, Peru, 12º33´S, 69º3´W, elev. 200m, 10.vii.1989, D. Silva leg., deposited in MUSM 0 504904. GoogleMaps  

Etymology. The species epithet is a noun in apposition taken from the type locality.

Diagnosis. Males of G. caparu   can be distinguished from all other Glenognatha   species by the presence of small sharpened projections on the conductor lamina ( Figs. 69C View FIGURE 69 , 71H View FIGURE 71 ). Females resemble those of G. mendezi   and G. lacteovittata   in having a conspicuously enlarged Ret1 ( Fig. 68C View FIGURE 68 ). They are distinguished from the former in having numerous gland ducts on the spermathecae ( Figs. 70C–D View FIGURE 70 ) and from the latter in having well-developed spermathecae ( Figs. 70C–D View FIGURE 70 ).

Male (holotype). Habitus as in Figures 67 A –D View FIGURE 67 . Carapace yellow-brownish, darker along furrows. Sternum dark brown, with dusky bands oriented towards the median region. Abdomen spherical, dorsally with irregular pattern of two longitudinal black bands on sides and some dark patches on the postero-median region. Silver guanine spots scattered in the entire dorsal surface and the median lateral surfaces. Venter with a diffused dusky median band, darker around epigastric furrow and two lighter lateral bands with some silver guanine spots. Legs light yellow-brownish with distal parts of segments darker. Tracheal spiracle well-sclerotized. Total length 2.62. Cephalothorax 1.17 long, 0.85 wide, 0.62 high. Abdomen 1.60 long, 1.15 wide, 1.15 high. Sternum 0.52 long, 0.53 wide.

Eye diameters and interdistances: AME 0.09. ALE 0.08. PME 0.08. PLE 0.07. AME-AME 0.08, AME-ALE 0.12, PME-PME 0.09, PME-PLE 0.11, ALE-PLE 0.01. Clypeus height 1.66. Chelicerae with the same coloration of the cephalothorax. Three promarginal and four retromarginal teeth ( Figs. 68 A –C View FIGURE 68 ) Anterior tooth present ( Figs. 68 A, C View FIGURE 68 ). Cheliceral fang outgrowth well-developed ( Fig. 68 A View FIGURE 68 ). Leg measurements: I: femur 1.45, patella 0.37, tibia 1.55, metatarsus 1.25, tarsus 0.65, total 5.27; II: 1.25, 0.35, 1.27, 1.20, 0.55, 4.62; III: 0.92, 0.25, 0.63, 0.70, 0.45, 2.96; IV: 1.27, 0.27, 1.02, 1.00, 0.47, 4.05. DTS 0.17. DTE 0.52. Palp as in Figures 69E–H View FIGURE 69 . Conductor with rugose texture ( Figs. 69C View FIGURE 69 , 71H View FIGURE 71 ). Embolus straight with 180º curved tip ( Figs. 69D View FIGURE 69 , 70F–I View FIGURE 70 ).

Female (paratype AMNH). Habitus as in Figures 67E–H View FIGURE 67 . Carapace brown, darker along furrows, with a median longitudinal dusky band. Sternum dark brown, darker on the edges. Abdomen spherical, strongly depigmentated, dorsally with dusky patches. Silver guanine spots absent. Venter with a diffused dusky median band, and two lighter bands on sides. Gonopore region and book lung covers lighter. Legs light yellow-brownish with distal parts of segments darker. Tracheal spiracle well-sclerotized. Total length 3.1. Cephalothorax 1.45 long, 0.97 wide, 0.70 high. Abdomen 1.67 long, 1.55 wide, 1.60 high. Sternum 0.65 long, 0.62 wide. Eye diameters and interdistances: AME 0.09. ALE 0.08. PME 0.08. PLE 0.06. AME-AME 0.08, AME-ALE 0.13, PME-PME 0.10, PME-PLE 0.12, ALE-PLE 0.01. Clypeus height 2.22. Chelicerae slightly darker than the cephalothorax. Three promarginal and four retromarginal teeth ( Figs. 68 View FIGURE 68 D-F). Ret1 enlarged ( Figs. 68 View FIGURE 68 E-F). Leg measurements: I: femur 1.90, patella 0.40, tibia 1.90, metatarsus 1.72, tarsus 0.82, total 6.75; II: 1.93, 0.42, 1.65, 1.25, 0.75, 6.01; III: 1.17, 0.42, 0.77, 0.90, 0.47, 3.75; IV: 1.57, 0.32, 1.35, 1.15, 0.52, 4.92. DTS 0.30. DTE 0.50. Tracheal system as in Figures 70L–M View FIGURE 70 . Spermathecae well-developed ( Figs. 70 A –E View FIGURE 70 ). Uterus externus divided in three portions ( Fig. 70B View FIGURE 70 ).

Variation. Male total length 2.0–2.7 (N = 10; average 2.4), cephalothorax length 1.0–1.2 (N = 10; average 1.1), femur I length 1.3–1.6 (N = 10; average 1.5). Female total length 2.3–3.1 (N = 5; average 2.6), cephalothorax length 1.0–1.4 (N = 5; average 1.2), femur I length 1.2–1.9 (N = 5; average 1.6).

Distribution. Known from Amazonian regions of Colombia, Bolivia, Peru, Brazil, Venezuela and Suriname ( Fig. 133 View FIGURE 133 ).

Additional material examined (N = 16). PERU: Loreto: P.N. Pacaya-Samiria Pithecia , 5º6´S, 74º50´W, elev. 100m, 16.viii.1989, D. Silva leg., 1♂ 3♀ 6 immature ( MUSM 0504921 ) GoogleMaps   . Madre de Dios: Zona Reservada de Manu, Puesto de Vigilancia., Pakitsa , 11º58´S, 71º18´W, elev. [425m], 6.x.1987, D. Silva & J. Coddington leg., 1 ♀ ( USNM) GoogleMaps   . SURINAME: [Para]   : Carolina Creek, 10km from Zanderij , [5º27´N, 55º12´W], elev. [27 m], B. Malkin leg., 1♂ ( AMNH) GoogleMaps   . BOLIVIA: Beni: Rio Benicito, Chacobo Indian Village , 12º30´S, 66ºW], elev. [156m], 10.31. vii.1960, B. Malkin leg., 1 ♀ ( AMNH)   . BRAZIL: Amazonas: Barcelos, Terra Indigena Yanomani, [0º58´24.96´´S, 62º55´38.3´´W], elev. [31m], 21.x.2006, Nogueira & Braga-Neto leg., 1♂ ( INPA) GoogleMaps   . Rondônia: Guajará-Mirim, Parque Estadual Guajará, [10º48´41.98´´S, 66º18´41.36´´W], elev. [132m], 18.i—13.iv.1998, Lawne J. Vitte & T. C. Ávila-Pires leg., 1♂ 1♀ ( MCTP 11373 View Materials ) GoogleMaps   .

AMNH

American Museum of Natural History

DTE

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

PERU

Universit� di Perugia

USNM

Smithsonian Institution, National Museum of Natural History

INPA

Instituto Nacional de Pesquisas da Amazonia