Ablemma kelinci Fardiansah & Duperre

Fardiansah, Riko, Duperre, Nadine, Widyastuti, Rahayu, Potapov, Anton, Stefan Scheu, & Harms, Danilo, 2019, Description of four new species of armoured spiders (Araneae, Tetrablemmidae) from Sumatra, Indonesia, ZooKeys 820, pp. 95-118 : 95

Ablemma kelinci Fardiansah & Duperre sp. n. Figs 21-24, 25-27, 49

Type material.

Holotype ♂: Indonesia, Sumatra, Bukit Duabelas, 01°58'55.1"S, 102°45'02.07"E, secondary lowland rainforest, October 2012, M. Jochum, A. Barnes (LIPI). Paratype: 1♂, Indonesia, Sumatra, Bukit Duabelas; 01°59'42.2"S, 102°45'08.01"E, secondary lowland rainforest, October 2012, M. Jochum, A. Barnes ( ZMH–A 0001340).

Etymology.

The specific name is a noun in apposition taken from Indonesian official language «bahasa», meaning rabbit, in reference to the eye projection that resembles rabbit ears.

Diagnosis.

Males of Ablemma kelinci sp. n. can be distinguished from most species by the presence of only four eyes (Fig. 21), from other four eyed Ablemma ; A. sternofoveata by the PME much closer (see Lethinen 1981, fig. 131); from A. berryi Shear, 1978 and A. shimojamai by the absence of large apical dorsal carapace tubercle (see Shear 1978, figs 81, 89). Furthermore, males are differentiated from all species by the unique triangular projection above the eyes (Figs 23, 24, arrow).

Description.

Male (holotype). Measurements: Total length: 1.06; carapace length: 0.47; carapace width: 0.42; abdomen length: 0.59; abdomen width:0.51; clypeus height: 0.22. Length of legs: I 1.14 (0.38, 0.12, 0.29, 0.15, 0.20); II 1.02 (0.30, 0.13, 0.25, 0.16, 0.18); III 0.89 (0.27, 0.12, 0.18, 0.16, 0.16); IV 1.21 (0.39, 0.13, 0.30, 0.20, 0.19).

Carapace: brownish yellow; pars cepalica reticulated, slightly concave apically; apico-laterally with a fringe of 5 pits, each bearing setae, and 3 small tubercles at apical end; pars thoracica finely reticulated, steeply sloping (Figs 21, 24); clypeus brownish yellow; sloping forward; finely reticulated (Figs 23, 24). Sternum: Yellowish brown; slightly longer than wide; reticulated except medially (Fig. 22). Chelicerae: Brownish orange; cheliceral basal boss straight, bearing one small tubercle; cheliceral apophysis large and triangular; transparent lamina thick apically (Fig. 49). Eyes: 4 eyes on a small mount; AME separated by their diameter, PME separated by 2 × their diameter; AME and PME touching; with triangular projection above eyes (Figs 21, 23 arrow). Abdomen: Dorsal scutum yellowish brown, smooth (Fig. 21). Laterally with 4 yellowish brown stripe-like scuta, slightly separated (Fig. 24). Ventrally covered by 4 smooth scuta; pulmonary scutum yellow orange, with oval book-lung covers; postgenital plate scutum and straight rectangular; preanal scutum nearly same width as postgenital scutum small and straight, shorter than preanal scutum; preanal scutum large, rectangular; anal scutum conical (Fig. 22). Legs: Yellowish brown; femora I–IV rugose ventrally; tibia I with small ventral tubercle; tarsus I swollen. Palp: Segments yellowish white; bulb mostly white, pyriform (Figs 25, 26). Sperm duct thick, narrowing with acute angle; embolus dark, blunt; basal projection thick and rounded (Fig. 27).

Female. Unknown.

Natural history.

So far, specimens were collected only from secondary lowland rainforest and never from modified forests such as rubber or oil palm plantations.

Distribution.

Known only from the type locality, Bukit Duabelas, Sumatra.