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

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/8E0E8F67-7D46-FFD0-ACBA-0EDDFCE0D41E

treatment provided by

Plazi

scientific name

Glenognatha caparu
status

new species

Glenognatha caparu  new species

( Figs. 67–70View FIGURE 67View FIGURE 68View FIGURE 69View FIGURE 70, 133View 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 5979View MaterialsGoogleMaps  ; Paratypes: 2♂ 1♀ from the type locality, same data as the holotype, deposited in ICN 5980View MaterialsGoogleMaps  ; 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 AMNHGoogleMaps  ; 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 19083View MaterialsGoogleMaps  ; 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. 69CView FIGURE 69, 71HView FIGURE 71). Females resemble those of G. mendezi  and G. lacteovittata  in having a conspicuously enlarged Ret1 ( Fig. 68CView FIGURE 68). They are distinguished from the former in having numerous gland ducts on the spermathecae ( Figs. 70C –DView FIGURE 70) and from the latter in having well-developed spermathecae ( Figs. 70C –DView FIGURE 70).

Male (holotype). Habitus as in Figures 67 A –DView 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 –CView FIGURE 68) Anterior tooth present ( Figs. 68 A, CView FIGURE 68). Cheliceral fang outgrowth well-developed ( Fig. 68 AView 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 –HView FIGURE 69. Conductor with rugose texture ( Figs. 69CView FIGURE 69, 71HView FIGURE 71). Embolus straight with 180º curved tip ( Figs. 69DView FIGURE 69, 70F –IView FIGURE 70).

Female (paratype AMNH). Habitus as in Figures 67E –HView 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. 68View FIGURE 68 D-F). Ret1 enlarged ( Figs. 68View 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 –MView FIGURE 70. Spermathecae well-developed ( Figs. 70 A –EView FIGURE 70). Uterus externus divided in three portions ( Fig. 70BView 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. 133View 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 11373View 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