Guaranita yaculica Huber, 2000

Torres, Víctor Manuel, Pardo, Paolo Luciano, González-Reyes, Andrea Ximena, Rodriguez-Artigas, Sandra Mónica & Corronca, José Antonio, 2016, Contributions on the spider families Nesticidae and Pholcidae (Araneae) from Argentina, Turkish Journal of Zoology 40 (1), pp. 6-13 : 10

Guaranita yaculica Huber, 2000

Figures 6 and 13–15

Guaranita yaculica : Huber, 2000: 97, Figure 378. Male holotype from Aguas Blancas -Yaculica (22°43ʹS, 64°24ʹW, 520 m a.s.l.), Salta, Argentina, in American Museum of Natural History , not seen .

Diagnosis. Huber (2000) diagnosed the species by the size and the shape of the male procursus dorsal flap, being large and roundish. The female of G. yaculica is distinguished from G. goloboffi and G. munda by a wider separation between plates of epigynum, and the larger posterior plate with straight anterior border ( Figures 13 and 14 ).

Description of the female (FML 02180). Total length 1.00, carapace width 0.45, length 0.55; leg I: 2.21 (0.60 + 0.18 + 0.55 + 0.53 + 0.35), tibia II: 0.43, tibia III: 0.44, tibia IV: 0.66; tibia I L/d: 9. Habitus as in Figure 15 , carapace orange-ocher; darkened on borders, without thoracic groove, eyes circled with black, distance PME–ALE about 30% of PME diameter. Clypeus orange-ocher with dark spots and chelicerae and sternum orange-ocher, without humps. Legs without spines, without curved and vertical hairs; tarsus I with ~5 pseudosegments. Opisthosoma oval, ocher-gray, with microsetae. Epigynum simple externally, light brown flat plate as in Figure 13 , internally with small semicircular median structure, and a pair of receptacles ( Figure 14 ).

Examined material. Argentina. Jujuy Province: Ledesma Department: Calilegua National Park, Caimancito oilfield, around Oil Well 4 (23°37ʹ01.5ʺS, 64°36ʹ03ʺW), male, immature, ( MCN-IEBI 003-000691 ), 26.X.2010, IEBI Team Cols. ; Caimancito oilfield, around Oil Well 35 (23°37ʹ10.3ʺS, 64°35ʹ41.7ʺW), male, female, ( FML 02180 ), 07.VI.2011, IEBI Team Cols.; Caimancito oilfield, around Oil Well 1, male, ( MCN-IEBI 003-000693 ), 07.VI.2011, IEBI Team Cols .; Calilegua National Park , north margins of Zanjón Seco string (23°41ʹ13.1ʺS, 64°34ʹ26.2ʺW), male, ( MCN-IEBI 003-000694 ), 07.VI.2011, IEBI Team Cols.

Remark. Female was assigned to G. yaculica because she was collected together with a male of that species in the same pitfall trap. In the same locality, near the site where this species was reported, we collected for the first time for the province of Jujuy together a male and a female of G. munda . Actually, there is no other species of this genus registered in these localities. It permits us to assert without doubt that the female here described belongs to G. yaculica .

Distribution. Known for Salta and Corrientes provinces ( Huber, 2000; Torres et al., 2015), and Jujuy Province ( Figure 6 ), Argentina.

Figures

Figure 6.Geographic distribution of Nesticus salta sp. nov., Guaranita dobby sp. nov., and G. yaculica Huber, 2000.

Figures 9‒15. Guaranita dobby sp. nov.: male holotype: 9. habitus, lateral view; 10. prosoma, frontal view; 11. left palpus, prolateral view (arrow points to stridulatory pick); 12. retrolateral view (arrow points to dorsal flap on the procursus).Scale bars:9‒10 = 0.20 mm; 11‒12 = 0.10 mm.Guaranita yaculica Huber, 2000: female: 13. epigynum, dorsal view; 14. epigynum, ventral view; 15. habitus, dorsal view. Scale bars: 13‒14 = 0.10 mm; 15 = 0.20 mm.