Aysenia Simon

González, María E. & Ramírez, Martín J., 2012, A revision and phylogenetic analysis of the spider genus Aysenia Tullgren (Araneae: Anyphaenidae, Amaurobioidinae), Zootaxa 3201, pp. 1-26 : 3

Aysenia Simon

Aysenia Tullgren, 1902: 54 (type species by monotypy Aysenia elongata Tullgren, 1902 ). Simon, 1903a: 1031. Ramírez, 1995a: 381 (transferred from Clubionidae ), 1997: 178, 2003: 60.

Diagnosis: Species of Aysenia are similar to those of Aysenoides in having an elongate body, a recurved posterior eye row, and the third leg directed forward ( Fig. 1 a, Ramírez 2003: figs 24a and 28d), but can be distinguished by having irregular spermathecae (instead of spherical, Ramírez 2003: figs 22c and 29d), and an unmodified, flattened embolar process (instead of spine-like) ( Fig. 4 b, Ramírez 2003; figs 27b).

Description: See Ramírez (2003), additional characters are here presented: Prosoma wide in front, some species with cephalic area as wide as thoracic area ( Fig. 8 a), other slightly narrower anteriorly. Posterior eye row recurved, except in A. huayun n. sp., ocular area projecting ( Fig. 11 d). Color reddish-brown except A. elongata which are pale, and characteristic opisthosoma color pattern in each species (spots in A. araucana , A. cylindrica , A. grismadoi n. sp., A. izquierdoi n. sp. and A. huayun n. sp.; chevrons in A. segestrioides and A. barrigai ; arrow with chevrons in A. elongata ). Male paramedian apophysis with two or three cusps. Secondary conductor small or absent. Embolus variable in length, with basal process flattened ( Figs 4 b, 9e). Epigyne with large accessory bulbs ( Figs 6 b, 13d).

Distribution: Southern forests of Chile and Argentina.

Figures

FIGURE 1. Aysenia elongata Tullgren. a – d female (a dorsal habitus; b prosoma, dorsal view; c ventral habitus, ventral view; d prosoma, ventral view).

FIGURE 4. Aysenia elongata Tullgren. SEM. a left palp, male, apical view; b same, prolateral view; c same, ventral view; d same, retrolateral view.

FIGURE 6. Aysenia cylindrica Ramírez (AMNH). a male dorsal habitus; b epigyne, ventral view, Ramírez (2003); c male left palp, ventral view; d male left palp, retrolateral view.

FIGURE 8. Aysenia barrigai Izquierdo & Ramírez (MACN-Ar 13430 y MACN-Ar 13432). a female dorsal habitus; b epigyne, ventral view; c male left palp, ventral view; d male left palp, retrolateral view.

FIGURE 11. Aysenia grismadoi new species. a - c male left palp, (a prolateral view; b ventral view, arrow to process on secondary conductor; c retrolateral view); d prosoma, lateral view.