Belisana benjamini Huber, 2005

Huber, Bernhard A., 2019, The pholcid spiders of Sri Lanka (Araneae: Pholcidae), Zootaxa 4550 (1), pp. 1-57 : 8

Belisana benjamini Huber, 2005

Figures 24 , 29–30

Belisana benjamini Huber, 2005: 112 , figs 37–38, 621–625 (♂ ♀, Sri Lanka).

Diagnosis (amendments; see Huber 2005). Easily distinguished from most congeners by curvature of procursus (towards ventral; Huber 2005: fig. 622); from two Sri Lankan species with similar procursus ( B. badulla , B. keyti ) by absence of bulbal apophysis ( Fig. 24 ). Females are difficult to distinguish externally from similar congeners; internal genitalia smaller and with distinctive median folds and elongated pore plates (not consisting of round lateral part and long narrow elongation as in B. badulla and B. keyti ; Figs 29–30 ).

Description (amendments; see Huber 2005). Tibia 1 in two newly examined males: 2.6, 2.9; in two females: 1.9, 2.3.

New record. SRI LANKA: 2♂ 1♀, ZFMK (Ar 20005), and 1♂ 2♀ in pure ethanol, ZFMK (Benj 53), Central Province, Matale District, Riverstone , Knuckles Range (7.528°N, 80.738°E), ~ 1000 m a.s.l., 2.xii.2009 (S.P. Benjamin, S. Batuwita, et al.) .

Distribution. Known from two localities in Knuckles Range ( Fig. 220 ).

Figures

FIGURES 17–24. 17–22. Belisana badulla sp. n. (ZFMK Ar 20002). 17–19. Left procursus, prolateral, dorsal, and retrolateral views. 20–21. Male chelicerae, frontal and lateral views. 22. Left genital bulb, prolateral view. 23–24. B. keyti Huber, 2005 (ZFMK Ar 20004) and B. benjamini Huber, 2005 (ZFMK Ar 20005), left genital bulbs, prolateral views (all genital bulbs at same scale). Abbreviations: ba, bulbal apophysis; e, embolus. Scale lines: 0.2 mm.

FIGURES 25–30. Cleared female genitalia in ventral and dorsal views, all at same scale. 25–26. Belisana badulla sp. n. (ZFMK Ar 20002). 27–28. B. keyti Huber, 2005 (ZFMK Ar 20004); arrows point at distinctive pair of internal folds. 29–30. B. benjamini Huber, 2005 (ZFMK Ar 20005); arrows point at median folds. Abbreviations: po, pocket; pp, pore plate. Scale line: 0.2 mm.

FIGURES 220–221. Known distribution of Belisana in Sri Lanka.