Cavisternum bom n. sp., Male (A–D), female (E–G) from Mandaitivu FR: A, carapace, dorsal view; B, abdomen, dorsal view; C, habitus, lateral view; D, sternum, ventral view; E, same; F, carapace, dorsal view; G, abdomen, ventral view. Scale bars: 0.2 mm.

Cavisternum bom n. sp., from Mandaitivue FR: A, male left palp, retrolateral view; B, female epigastric region, dorsal view. Abbreviations: em, embolus; ef, epigastric furrow; lap, lateral apodemes; gt, genitalic tube; psg, posterior spiracular groove. The arrow in (B) points to the thin semicircular rim in the epigastric area. Scale bars: 0.1 mm.

Grymeus dharmapriyai n. sp., male from Wanathavilluwa: A, carapace, dorsal view; B, sternum, ventral view; C, carapace, lateral view; D, same, anterior view; E, same, posterior view; F, abdomen, anterior view; G, same, dorsal view; H, same, ventral view; I, same, lateral view; J, same, posterior view. Scale bars: 0.2 mm (A–F, J), 0.5 mm (G–I).

Grymeus dharmapriyai n. sp., female from Wanathavilluwa: A, habitus, dorsal view; B, same, ventral view; C, carapace, dorsal view; D, sternum, ventral view; E, abdomen, ventral view. Scale bars: 1 mm (A–B), 0.5 mm (C–E).

Grymeus dharmapriyai n. sp., from Wanathavilluwa: A, male left palp, distal part, retrolateral view; B, female epigastric region, dorsal view. Abbreviations: co, conductor; em, embolus; gap, globular appendix; lap, lateral apodemes; ma, embolic accessory appendage; na, nail like process; psc, paddle-like sclerite; re, receptaculum; ssa, secretory sac; to, tooth like projection. Scale bars: 0.1 mm.

Ischnothyreus chippy n. sp., male from a forest between Koslanda and Beragala: A, habitus, dorsal view; B, same, ventral view; C, same, lateral view. Scale bars: 0.5 mm.

Ischnothyreus chippy n. sp., male from a forest between Koslanda and Beragala: A, left palp, retrolateral view; B, same, prolateral view. Abbreviation: vpr, ventral protuberance. Scale bars: 0.1 mm.

Opopaea spinosiscorona n. sp., male from Kurulukelle FR: A, carapace, dorsal view; B, same, anterior view; C, same, lateral view; D, same posterior view; E, sternum, ventral view; F, abdomen, dorsal view; G, same, ventral view; H, same, lateral view; I, same, anterior view; J, same, posterior view. Scale bars: 0.2 mm.

Opopaea spinosiscorona n. sp., female from Kurulukelle FR: A, habitus, dorsal view; B, same, ventral view. Scale bars: 0.5 mm.

Opopaea spinosiscorona n. sp., from Kurulukelle FR: A, male left palp, prolateral view; B, female epigastric region, ventral view. Scale bars: 0.1 mm.

Pelicinus snooky n. sp., male from Ethagala FR: A, carapace, dorsal view; B, sternum, ventral view; C, carapace, anterior view; D, same, lateral view; E, same, posterior view; F, abdomen, anterior view; G, same, posterior view; H, same, ventral view; I, same, lateral view; J, same, dorsal view. Scale bars: 0.2 mm.

Pelicinus snooky n. sp., female from Ethagala FR: A, carapace, anterior view; B, same, dorsal view; C, abdomen, ventral view; D, same, dorsal view. Scale bars: 0.2 mm (A–D).

Pelicinus snooky n. sp., from Ethagala FR: A, left palp, prolateral view; B, male left palp, retrolateral view; C, female epigastric region, dorsal view. Abbreviations: as, accessory structure; em, embolus; ef, epigastric furrow; gt, genitalic tube; psg, posterior spiracular groove; re, receptaculum. Scale bars: 0.1 mm.

Pelicinus tumpy n. sp., male from Mihinthale FR: A, carapace, dorsal view; B, sternum, ventral view; C, carapace, posterior view; D, same, lateral view; E, same, anterior view; F, abdomen, anterior view; G, same, ventral view; H, same, dorsal view. Scale bars: 0.2 mm.

Pelicinus tumpy n. sp., from Mihinthale FR: A, male left palp, retrolateral view; B, details of the distal part of the bulb; C, female epigastric region, dorsal view; D, female epigastric region, ventral view. Abbreviations: as, accessory structure; co, conductor; em, embolus; ef, epigastric furrow; lap, lateral apodemes; pgt, posterior genitalic tube; psg, posterior spiracular groove; psc, paddle-like sclerite. Scale bars: 0.1 mm.

Silhouettella saaristoi n. sp., male from Labugama FR: A, habitus, dorsal view; B, same, ventral view; C, same, lateral view. Scale bars: 0.2 mm.

Silhouettella snippy n. sp., male from NIFS Arboretum: A, carapace, dorsal view; B, same, lateral view; C, same, anterior view; D, sternum, ventral view; E, abdomen, dorsal view; F, same, posterior view; G, same, ventral view; H, same, lateral view. Scale bars: 0.2 mm.

Silhouettella tiggy n. sp., male from Corbett’s Gap: A, habitus, dorsal view; B, same, lateral view; C, same, ventral view; D, carapace, anterior view; E, same, posterior view; F, abdomen, posterior view. Scale bars: 0.5 mm (A–C), 0.2 mm (D–F).

Silhouettella snippy n. sp., female from NIFS Arboretum (A–C), Silhouettella tiggy n. sp. female from Dunumadalawa FR (D–E): A, habitus, dorsal view; B, sternum, ventral view; C, abdomen, ventral view; D, habitus, dorsal view; E, habitus, ventral view. Scale bars: 0.5 mm (A), 0.2 mm (B–E).

Silhouettella snippy n. sp. (A, D), Silhouettella tiggy n. sp. (B), Silhouettella saaristoi n. sp. (C, E): A–C, male left palp, retrolateral view; D, female epigastric region, dorsal view; E, same. Abbreviations: em, embolus; gap, globular appendix; lap, lateral apodemes na, nail like process; psc, paddle-like sclerite; re, receptaculum; ssa, secretory sac. Scale bars: 0.1 mm.

Distribution map of new species. ∎Cavisternum bom n. sp.; ●Grymeus dharmapriyai n. sp.; ★Pelicinus snooky n. sp.; ★Pelicinus tumpy n. sp.; ▲Silhouettella tiggy n. sp.; ▲Silhouettella snippy n. sp.; ▲ Silhouettella saaristoi n. sp.; ⬢Ischnothyreus chippy n. sp.