Brignoliella patmae 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

Brignoliella patmae Fardiansah & Duperre sp. n. Figs 34-37, 38-40, 41-44, 45-46, 50

Type material.

Holotype ♂: Indonesia, Sumatra, Harapan, 02°09'29.2"S, 103°20'01.5"E, secondary lowland rainforest, October 2012 (LIPI). Paratypes: Indonesia, Sumatra, Bukit Duabelas, 01°56'33.9"S, 102°34'52.7"E, 1♂1♀, secondary lowland rainforest, October 2012 (ZMH-A0001331); 2♀, October 2012 (ZMH-A0001344); 1♂, October 2012 (ZMH-A0001346); 01°59'42.5"S, 102°45'08.1"E, 1♀, secondary lowland rainforest, October 2013 (LIPI); 1♀, October 2013 (ZMH-A000136); 1♀, October 2013 (ZMH-A0001341); Harapan, 02°09'09.9"S, 103°21'43.2"E, secondary lowland rainforest, October 2012 (ZMH-A0001333); 01°49'31.9"S, 103°17'39.2"E, 1♀, rainforest with rubber trees October 2012 (ZMH-A0001351).

Etymology.

This species is named after the mother of the first author, Patmawati, nickname “Patma” for her endless support and love.

Diagnosis.

This new species can be distinguished from all congeners by the long and narrow embolus, and the shorter length of the clypeal horn (Figs 34, 37). From similar species, B. besutensis (see Lin et al. 2017: 33, figs 11 A–B) by the longer and thinner embolus, and from B. michaeli (see Lehtinen 1981: 119, figs 103-106) by the shorter length of the clypeal horn in males (Figs 34, 37). Females are distinguished from B. besutensis and B. michaeli (see Lin et al. 2017: fig. 12 A–D, fig. 15 A–D) by the protruded anterolateral groove of the preanal scutum beyond the anteromargin, and the position of preanal scutum which is separated from the postgenital scutum (Fig. 45).

Description.

Male (holotype). Measurements: Measurements: Total length: 1.33; carapace length: 0.58; carapace width: 0.53; abdomen length: 0.75; abdomen width: 0.64; clypeus height: 0.20. Length of legs: I 1.37 (0.43, 0.16, 0.33, 0.22, 0.24); II 1.32 (0.41, 0.16, 0.32, 0.24, 0.24); III 1.21 (0.37, 0.14, 0.26, 0.23, 0.21); IV 1.44 (0.44, 0.14, 0.35, 0.28, 0.23).

Carapace: Dark brown, rugose; pars cepalica smooth apically, apico-laterally with a fringe of 7 pits, each bearing setae, and 3 small tubercles at apical end; pars thoracica rugose, steeply sloping (Figs 34, 37); clypeus brown, punctated; clypeal horn fairly long, distally bifid (Figs 34, 37). Sternum: Brown; as long as wide; deeply punctated (Fig. 35). Chelicerae: Brown, punctated; cheliceral boss a pointed projection; cheliceral apophysis absent; cheliceral lamina well developed, translucent (Figs 36, 50). Eyes: 6 eyes in three diads (Fig. 34). Abdomen: Dorsal scutum brownish orange, smooth (Fig. 34). Lateral scutum brownish orange, with four pairs of stripe-like plates (Fig. 37). Ventral scutum brownish orange, book-lung cover round; anterior ventrolateral scutum pointed; postgenital scutum rectangular and flat, slightly bend with pulmonary scutum but separated with preanal scutum; preanal scutum slightly square; conical anal scutum triangular (Fig. 35). Legs: Brownish orange; femora rugose ventrally; femur I and II slightly swollen; femur IV slightly bent. Palp: Bulb yellowish brown, pear-shaped (Figs 38, 39). Embolus dark brownish, sharp and curved (Figs 38-40).

Female (paratype). Measurements: Total length: 1.14; carapace length: 0.56; carapace width: 0.52; abdomen length: 0.87; abdomen width: 0.70; clypeus height: 0.16. Length of legs: I 1.43 (0.49, 0.15, 0.32, 0.22, 0.25); II 1.37 (0.41, 0.16, 0.32, 0.24, 0.24); III 1.17 (0.32, 0.14, 0.26, 0.24, 0.21); 1.56 (0.46, 0.16, 0.39, 0.29, 0.26).

Coloration: As in male. Carapace: Partly rugose, pars cepalica slightly rounded in lateral view; pars thoracica rugose, sloping gradually (Figs 41, 44); clypeus smooth, without clypeal horn, slightly rounded in lateral view (Fig. 44). Chelicerae: Cheliceral boss as small rounded projection. Eyes: 6 in 3 diads (Figs 41, 43). Abdomen: Dorsal scutum brownish orange, smooth (Fig. 41). Laterally with four pairs of stripe-like plates, brownish orange (Fig. 44). Ventrally covered by 4 scuta; pulmonary scutum brownish orange, smooth, book-lungs oval; postgenital scutum slightly straight, longer than preanal scutum; preanal scutum separated from postgenital scutum and anal scutum, anterolateral groove of preanal scutum protruding, rounded, slightly curved and extending beyond the anteromargin; anal scutum triangular conical (Fig. 45). Legs: As in male. Genitalia: Ducts wide, transculent, connected to seminal receptacle; sac-like seminal receptacle with distinctly folded cuticle (Fig. 46).

Natural history.

Secondary lowland rainforest and lowland rainforest with rubber trees.

Distribution.

Indonesia, Sumatra.