Glenognatha januari, 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: 94-96

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/8E0E8F67-7D4F-FFD7-ACBA-0DCDFC46D6B8

treatment provided by

Plazi

scientific name

Glenognatha januari
status

new species

Glenognatha januari  new species

( Figs. 75–76View FIGURE 75View FIGURE 76, 133View FIGURE 133)

Types. Male holotype from Lago Janauari , Manaus, Amazonas, Brazil, 3º20´S, 60º17´W, elev. [12m], vi.1987GoogleMaps  – vii.1988, J. Adis et al. leg., deposited in IBSP 120209; Paratypes: 1♂ same data as the holotype deposited in IBSP 120266View MaterialsGoogleMaps  .

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

Diagnosis. Males of G. januari  resemble those of G. heleios  , G. iviei  , G. caaguara  and G. camisea  by the presence of anterior tooth ( Fig. 75GView FIGURE 75). They are distinguished from the latter species by the serrated distal margin of the conductor ( Figs. 76B –CView FIGURE 76).

Male (holotype). Habitus as in Figures 75 A –DView FIGURE 75. Carapace pale brown, darker on sides and with a diffused dusky patch from the median eyes to the cephalic fovea. Sternum dusky brown, with darker bands towards the median region. Abdomen spherical, strongly depigmentated, dorsally with irregular greyish patches and scattered silver guanine spots. Venter with a pale black median band. Legs yellow-brownish with darker bands at the base of the segments. Total length 1.77. Cephalothorax 0.77 long, 0.60 wide, 0.50 high. Abdomen 0.92 long, 0.75 wide, 0.75 high. Sternum 0.35 long, 0.42 wide. Eye diameters and interdistances: AME 0.08. ALE 0.05. PME 0.07. PLE 0.06. AME-AME 0.05, AME-ALE 0.05, PME-PME 0.07, PME-PLE 0.08, ALE-PLE 0.01. Clypeus height 1.20. Chelicerae slightly lighter than the cephalothorax. Three promarginal and four retromarginal teeth ( Figs. 75E –GView FIGURE 75). Anterior tooth near the fang base ( Fig. 75GView FIGURE 75). Leg measurements: I: femur 0.80, patella 0.22, tibia 0.75, metatarsus 0.70, tarsus 0.45, total 2.92; II: 0.67, 0.22, 0.70, 0.61, 0.45, 2.66; III: 0.50, 0.18, 0.40, 0.42, 0.28, 1.80; IV: 0.75, 0.17, 0.60, 0.55, 0.30, 2.37. DTS 0.10. DTE 0.34. Palp as in Figures 76E –HView FIGURE 76. Embolus short, almost completely enclosed by the conductor ( Figs. 76 A, E –HView FIGURE 76).

Female. Unknown.

Variation. Male total length 1.65–1.77 (N = 4; average 1.72), cephalothorax length 0.62–0.75 (N = 4; average 0.72), femur I length 0.8–0.85 (N = 4; average 0.81).

Distribution. Known only from the type locality in the state of Amazonas, Brazil ( Fig. 133View FIGURE 133).

Material examined (N = 2). BRAZIL: Amazonas: Manaus, Lago Janauari, 3º20´S, 60º17´W, elev. [12m], vi.1987GoogleMaps  – vii.1988, J. Adis et al. leg., 1 ♂ ( IBSP 120166)  ; 1 ♂ (IBSP 120220).

DTE

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

IBSP

Instituto Biologico de Sao Paulo