Arctosa jibarosa, Paredes-Munguía & Brescovit & Teixeira, 2024

Paredes-Munguía, Williams, Brescovit, Antonio D. & Teixeira, Renato A., 2024, Revision of Neotropical wolf spider genus Arctosa C. L. Koch, 1847 (Araneae: Lycosidae), with description of seven new species, Zootaxa 5414 (1), pp. 1-83 : 7

jibarosa group, males

1 Depression of Median apophysis (DMA) shallow ( Fig. 20f )…............................. ... Arctosa jibarosa sp. nov.

- Depression of median apophysis (DMA) deep ( Fig. 7d )....................................................... 2

2 Retrolateral arm of median apophysis (Ra) bulging and pronounced ( Fig. 6a )................. .. Arctosa conflicta sp. nov.

- Retrolateral arm of median apophysis (Ra) with an acute tip ( Fig. 40c )........................................... 3

3 Terminal apophysis (TA) curved ( Figs 41e , 43a )............ Arctosa tenella (F.O. Pickard-Cambridge, 1902) comb. nov.

- Terminal apophysis (TA) straight ( Figs 34a , 35d )..................... Arctosa tenebrosa ( Keyserling, 1877) comb. nov.

Figures

FIGURE 6. Arctosa conflicta sp. nov. Male bulb (ICN-Ar 12814) (a, ventral; b, retrolateral; c, apical. Scale bars: a–c, 200 µm. E embolus, Pa Posterior arm, Pp Palea protuberance, Ra Retrolateral arm, TA terminal apophysis.

FIGURE 7. Arctosa conflicta sp. nov. Male habitus (ICN-Ar 12814) a–c (a, dorsal; b, ventral; c, lateral), pedipalpal bulb d–g (d, ventral; e, prolateral; f, anterior; g, posterior). Scale bars: a–g, 200 µm. DMA depression of MA, E embolus, Pa posterior arm, Pp Palea protuberance, Ra retrolateral arm, SD seminal duct, ST subtegulum, TA terminal apophysis.

FIGURE 20. Arctosa jibarosa sp. nov. Male habitus (MUSM-ENT 504111) a, d, g–h (a, dorsal; d, ventral; g, lateral; h, frontal). Epigynum (MUSM-ENT 504111) b, e (b, dorsal; e, ventral). Female habitus paratype (MUSM-ENT 505269) c, f, i (c, dorsal; f, ventral; i, lateral). Scale bars: a, d, g, 1 mm, b, e, 0.1 mm, h, 200 µm, c, f, i, 1 mm. SS stalk of spermatheca.

FIGURE 34. Arctosa tenebrosa (Keyserling, 1877) comb. nov. Male. Pedipalp (ICN-Ar 1378) a–c (a, ventral; b, retrolateral; c, anterior). Scale bars: a–c, 0.25 mm. CMS cymbium macrosetae, Pa posterior arm, Pp palea protuberance, Ra retrolateral arm, T tegulum, TA terminal apophysis.

FIGURE 35. Arctosa tenebrosa (Keyserling, 1877) comb. nov. Male. Pedipalp (ICN-Ar 1378) a–c, i (a, ventral; b, retrolateral; c, prolateral; i, dorsal setae). Palpal bulb d–h (d, ventral; e, retrolateral; f, prolateral; g, posterior; h, anterior). Scale bars: a–c, 0.2 mm, d–i, 100 µm. C Conductor, DMA depression of median apophysis, E embolus, Pa posterior arm, ST subtegulum, T tegulum, TA terminal apophysis, TK tegular keel. * basal hump on median apophysis.

FIGURE 40. Arctosa tenella (Keyserling, 1877) comb. nov. Male habitus (ICN-Ar 2577) a–c (a, dorsal; b, lateral; c, ventral). Pedipalp, expanded d–e (d, prolateral; e, anterior). Scale bars: a–c 1 mm, d–e 150 µm. BH basal hematodocha, DH distal hematodocha, MA median apophysis, Pa posterior arm, Ra retrolateral arm, ST subtegulum, TA terminal apophysis.

FIGURE 41. Arctosa tenella (Keyserling, 1877) comb. nov. Epigynum (ICN-Ar 2577) (a, ventral; b, dorsal; c, posterolateral; d, posterior). Scale bars: a–d, 0.25 mm. CO copulatory opening, HS head of spermatheca, FD fertilization duct, MS median septum, VC vulval chamber.

FIGURE 43. Arctosa tenella (Keyserling, 1877) comb. nov. Male palpal bulb SEM (MUSM-ENT 508928) a–c (a, ventral; b, conductor detail; c, MA details). Scale bars: a, 150 µm, b–c, 50 µm. C conductor, E embolus, Pa posterior arm, Ra retrolateral arm, ST subtegulum, TA terminal apophysis.