Glenognatha hirsutissima ( Berland, 1935 ),

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: 105-109

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/8E0E8F67-7D7A-FFE4-ACBA-0E1CFEBDD0C2

treatment provided by

Plazi

scientific name

Glenognatha hirsutissima ( Berland, 1935 )
status

 

Glenognatha hirsutissima ( Berland, 1935) 

( Figs. 85–88View FIGURE 85View FIGURE 87View FIGURE 88, 136View FIGURE 136)

Hivaoa hirsutissima Berland, 1935: 52  , fig. 20–23 (female holotype from Teavaituhai, Uapou , Marquesas Islands, 30.xi.1931, deposited in Bernice Bishop Museum, Honolulu, lost). 

Glenognatha hirsutissima: Levi 1980: 64  ; Cabra-García et al. 2014: 1029, figs. 1L, 3A, 6B, 8C, 9I –J; World Spider Catalog 2015.

Diagnosis. Males and females of G. hirsutissima  can be easily distinguished from all other Glenognatha  species by the presence of a strong macrosetae on the anterior surface fo the chelicerae ( Figs. 85D, HView FIGURE 85).

Description. Male (Marquesas Islands, Nuku Hiva, USNM) (Note: the male is described here for the first time). Habitus as in Figures 85 A –DView FIGURE 85. Carapace yellow-brownish, with two dusky lateral bands. Sternum light yellow, darker on edges. Abdomen oval, dorsally with irregular pattern of longitudinal dusky bands that extend to the lateral surface. Thin transvers bands on the posterior region. Silver guanine spots scattered in the dorsal and lateral surfaces. Venter greyish with scattered silver guanine spots. Legs light yellow. Total length 2.45. Cephalothorax 1.17 long, 0.87 wide, 0.75 high. Abdomen 1.37 long, 0.87 wide, 0.85 high. Sternum 0.62 long, 0.57 wide. Eye diameters and interdistances: AME 0.07. ALE 0.05. PME 0.09. PLE 0.05. AME-AME 0.09, AME-ALE 0.09, PME-PME 0.11, PME-PLE 0.11, ALE-PLE 0.01. Clypeus height 3.21. Chelicerae with a strong macrosetae (Figs. 86 A, C). Three promarginal and three retromarginal teeth (Figs. 86 A –C). Leg measurements: I: femur 1.50, patella 0.37, tibia 1.50, metatarsus 1.45, tarsus 0.37, total 5.20; II: 1.42, 0.35, 1.50, 0.92, 0.30, 4.50; III: 1.02, 0.32, 0.80, 0.72, 0.25, 3.12; IV: 1.37, 0.27, 1.17, 1.22, 0.30, 4.35. Femur III with a ventral row of strong macrosetae. Metatarsi I –IV with two trichobothria. DTS 0.20. DTE 0.45. Palp as in Figures 87E –HView FIGURE 87. Embolus and conductor slender ( Figs. 87 A, E –HView FIGURE 87).

F IGURE 86. Glenognatha hirsutissima  from Marquesas Islands ( USNM)  . A  C, male left chelicerae. A, anterior (arrow, macrosetae). B, posterior. C, mesal. D –F, female left chelicerae. D, anterior (arrow, macrosetae socket). E, posterior. F, mesal. Scale bars, 100 µm. Prt: promarginal tooth. Ret: retromarginal tooth. 

Female. Described by Berland (1935). Additional data.

Marquesas Islands, Nuku Hiva ( USNM). Habitus and general coloration as in male ( Figs. 85E –HView FIGURE 85). Venter of abdomen with thin transverse dusky band originating from the tracheal spiracle towards the anterior region. Light patch anterior to the gonopore. Total length 2.87. Cephalothorax 1.20 long, 1.05 wide, 0.75 high. Abdomen 1.75 long, 1.45 wide, 1.50 high. Sternum 0.65 long 0.62 wide. Eye diameters and interdistances: AME 0.08. ALE 0.05. PME 0.09. PLE 0.06. AME-AME 0.06, AME-ALE 0.1, PME-PME 0.11, PME-PLE 0.11, ALE-PLE 0.01. Clypeus height 3.12. Chelicerae with a strong macrosetae (Fig. 86D) Three promarginal and four retromarginal teeth. (Figs. 86D –F). Leg measurements: I: femur 1.47, patella 0.45, tibia 1.50, metatarsus 1.17, tarsus 0.27, total 4.87; II: 1.42, 0.45, 1.42, 1.10, 0.25, 4.65; III: 1.00, 0.25, 0.77, 0.82, 0.22, 3.07; IV: 1.47, 0.30, 1.20, 1.30, 0.27, 4.55. Femur I, II and III with a ventral row of strong macrosetae. Metatarsi I –IV with two trichobothria. DTS 0.25. DTE 0.35. Spermathecae with a basal constriction ( Figs. 88 A –CView FIGURE 88). UE entire ( Figs. 88 A –CView FIGURE 88).

Distribution. Known only from Marquesas Islands ( Fig. 136View FIGURE 136).

Remarks. Although the female holotype of G. hirsutissima  was not examined, a vial from USNM (2♂ 1♀ 2 immature) collected near the type locality (30 km N) was available for study. After comparison with the original description ( Berland 1935), the female specimen was identified as G. hirsutissima  based on the presence of conspicuous macrosetae on legs, palp and chelicerae as depicted by Berland (1935, figs. 21–23). Males examined also have such macrosetae. According with the original descriptions of the remaining Polynesian Glenognatha  ( Berland 1933, 1935, 1942) and all the material examined in this work, the presence of these spines is autapomorphic for G. hirsutissima  . Since the identity of the species is not in doubt the designation of a neotype is not necessary ( ICZN, Art. 75).

Additional material examined (N = 5). FRENCH POLYNESIA: Marquesas Islands: Nuku Hiva, Tekao Ridge , 8º51´39´´S, 140º10´24´´W, elev. 400m, 21.x.1999, D. A. & J. T. Polhemus leg., 2♂ 1♀ 2 immature ( USNM).GoogleMaps 

USNM

Smithsonian Institution, National 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 hirsutissima ( Berland, 1935 )

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

Glenognatha hirsutissima: Levi 1980 : 64

Cabra-Garcia 2014: 1029
Levi 1980: 64
1980
Loc

Hivaoa hirsutissima

Berland 1935: 52
1935