Campostichomma alawala, Polotow & Griswold, 2017

Campostichomma alawala sp. nov.

Figures 1 View FIGURE 1 , 5 View FIGURE5 , 8A–B View FIGURE8 , 14 View FIGURE14

Type material. Female holotype from Sri Lanka, Alawala, 42 km ( 26 miles) NE Colombo, 6.III.1962, CASENT9067599, deposited in Lund University. Two female paratypes with the same data as holotype. Etymology. The species epithet is a noun in apposition from the type locality.

Diagnosis. Females of C. alawala can be distinguished by the shape of the epigynal structures, as the presence of a broad and slightly sclerotized epigynal plate, with an excavated median lobe plate and curved copulatory openings; epigynal teeth small, lateral, at outer margins of lateral lobes ( Figs 5D View FIGURE5 , 8A View FIGURE8 ); and by the copulatory ducts with one ascending spiral ( Figs 5E, F View FIGURE5 , 8B View FIGURE8 ).

DesCription. Female ( holotype): Total length 4.30. Markings as in Fig. 5A–C View FIGURE5 . Carapace 2.45 long, 1.80 wide, 0.80 high; clypeus 0.10 high. Eye diameters: AME 0.09, ALE 0.16, PME 0.10, PLE 0.17. Chelicerae 0.96 long; sternum 1.20 long, 0.90 wide; labium 0.46 long; palpal coxae 0.85 long. Spination as in genus description. Leg measurements (Femur + Patella + Tibia + Metatarsus + Tarsus = [Total]): I: 1.65 + 0.88 + 1.40 + 1.30 + 0.90 = 6.13; II: 1.60 + 0.80 + 1.30 + 1.30 + 0.80 = 5.80; III: 1.50 + 0.70 + 1.00 + 1.40 + 0.85 = 5.45; IV: 1.95 + 0.75 + 1.60 + 2.45 + 1.30 = 8.05. Leg formula 4123. Epigynum: median lobe large and excavated; lateral lobes with small, lateral teeth at outer margins of lateral lobes ( Figs 5D View FIGURE5 , 8A View FIGURE8 ). Vulva with elongated and sinuous copulatory ducts, which have one ascending spiral; spermathecae large, with projections and small fertilization ducts ( Figs 5E, F View FIGURE5 , 8B View FIGURE8 ).

Variation. Female (N= 3): Total length 4.30–4.70; carapace length 2.40–2.45; femur I 1.50–1.65.

Male. Unknown.

Material examined. Only the types.

Natural history. Collection data for the specimens as described in Brinck et al. (1971: 24) refer to a low elevation site, a “hill top” at 200 m that was “covered by jungle [and] much bamboo.” C. alawala differs from other Campostichomma by occurring at low elevation: others occur in highlands above 1000 m (Brinck et al. 1971).

Distribution. Known only from the type locality at Alawala in Sri Lanka ( Fig. 14 View FIGURE14 ).