A review of Sri Lankan Brignolia including the description of four new species (Araneae: Oonopidae) Author Ranasinghe, U. G. S. L. Author Benjamin, Suresh P. text Zootaxa 2016 4144 4 451 476 journal article 10.11646/zootaxa.4144.4.1 62ac3536-4049-4b1f-9401-ccf352ffd71f 1175-5326 267497 FD69103F-9897-47E1-8256-924C99B670CF Brignolia ambigua (Simon, 1893) ( Figs. 2 A–F, 3A–D) Opopaea ambigua Simon, 1893b : 302 . Brignolia ambigua Platnick et al ., 2011 : 52 , figs. 822–837. Material examined. 1♂ (IFS_Oon_036): Sri Lanka : Central Province , Matale District , NIFS Arboretum , 0 7°51’34”N 80°40’28”E , 180m , 27 April 2010 , leg. S. P. Benjamin and S. Batuwita . 2♀ (IFS_Oon_152,153): same locality data, 0 1 December 2011 , leg. S. P. Benjamin et al ., litter . 1♂ (IFS_Oon_281): Sri Lanka : Central Province , Kandy District , Knuckles , Riverston , site 0 2, 0 7°31’25”N 80°44’20”E , 1240m , 25 February 2015 , leg. N. Athukorala , litter. Diagnosis. Males can be easily recognized by the distally expanded, blunt-tip of the palpal bulb ( Figs. 3 A, B; figs. 830–837 Platnick et al . (2011) . Females can be recognized by the dark undulated transverse ridge, near the epigastric furrow ( Figs. 3 C, D). FIGURE 1 . Map of Sri Lanka showing known localities for Brignolia species. See text for details. A. Northern Province; B. North Central Province; C. Eastern Province; D. North Western Province; E. Central Province; F. Uva Province; G. Sabaragamuwa Province; H. Western Province; I. Southern Province. FIGURE 2. Brignolia ambigua (Simon, 1893) , female from Dambulla NIFS Arboretum. A. carapace, dorsal view; B. same, lateral view; C. same, anterior view; D. same, posterior view; E. sternum, ventral view; F. abdomen, anterior view. scr, scutopedicel ridge. Scale bars = 0.2 mm. Description. Description based on the four specimens listed above. Also see Platnick et al . (2011) for a detailed description. MALE : Body length 1.30. Pars cephalica slightly elevated, pars thoracica sloping gradually to rounded posterior margin. Median portion of sternum with ordinary setae and without distinct pits. Scuto-pedicel region with straight ridge. Genitalia: distal portion of palpal bulb relatively large, as high as cymbium. Bulb distally expanded with a blunt tip, base without triangular projection ( Figs. 3 A, B). FEMALE : Body length 1.54. Somatic morphology as male ( Fig. 2 A, 2B, 2D, 2F). Genitalia: postepigastric region with dark undulated transverse ridge positioned near the epigastric furrow. Postepigastric region with posterior genitalic tube and without any triangular projections, posterior tube very short and narrow ( Figs. 3 C, D). Intraspecific variation. Color of carapace and dorsal scuta diverge from pale orange to orange. Scuto-pedicel region with medially straight weak sclerotized ridge ( Fig. 2 F). Distribution. Sri Lanka . Previous record : Galle. New records : Matale District, NIFS Arboretum (L 17), Knuckles (L 44).