Tegulinus bifurcatus, Tanasevitch, 2017

Tanasevitch, Andrei V., 2017, New genera and new species of the family Linyphiidae from Borneo, Sumatra and Java (Arachnida, Araneae), Revue suisse de Zoologie 124 (1), pp. 141-155 : 152

Tegulinus bifurcatus sp. nov.

Figs 56-59 , 65-69

Holotype: Male; Indonesia, Sumatra, Jambi Province, Mt Kerinci , 3000 m a.s.l., 12.XI.1989; leg. D. Agosti, D. Burckhardt & I. LöbI [# 13a ].

Diagnosis: The species is characterized by the presence of a hump on the carapace, by the presence of two processes on the palpal tibia, as well as by the relatively small convector .

Etymology: The specific name is a Latin adjective referring to the shape of the male palpal tibia.

Description: Male (holotype). Total length 1.90, habitus as shown in Fig. 56 . Carapace 0.90 long, 0.73 wide, pale brown, with a pale, rounded hump in the centre ( Figs 56-57 ). Chelicerae 0.30 long, mastidion absent. Legs yellow. Leg I 2.96 long (0.85+0.25+0.70+0.68+0.48.), leg IV 2.93 long (0.80+0.23+0.70+0.75+0.45). Chaetotaxy unknown, spines lost. TmI 0.80. All metatarsi with trichobothrium. Palp ( Figs 58-59 , 65-69 ): Dorso-apical process of tibia divided into two branches.

Paracymbium small, L-shaped. Tegulum conical, strongly protruded downwards, pointed and bent apically. Distal suprategular apophysis small, ending in a narrow, almost transparent process. Convector with a deep hollow. Embolus small, comma-shaped. Abdomen 1.00 long, 0.75 wide, dorsal pattern as shown in Fig. 56 . Female. Unknown.

Taxonomic remarks: The new species is similar to its only known congener, T. sumatranus sp. nov., but can be easily distinguished by the presence of a hump on the carapace and of two processes on the palpal tibia (versus only one in T. sumatranus sp. nov.).

Distribution: Known only from the type locality at high altitudes in Jambi Province, Sumatra Island, Indonesia.

Figures

Figs 52 - 59. Photographs of Tegulinus sumatranus sp. nov., male paratype from Mt Tujuh (52 - 55), and of T. bifurcatus sp. nov., male holotype (56 - 59). (52 - 53, 56) Habitus. (57) Cephalothorax, lateral view. (54, 58) Right palp, retrolateral view. (55, 59) Palpal tibia, dorsal view.

Figs 60 - 69. Tegulinus sumatranus sp. nov., male paratype from Mt Tujuh (60 - 64), and T. bifurcatus sp. nov., male holotype (65 - 69). (60, 65) Right palp, retrolateral view. (61, 66, 67) Right palp, prolateral view. (62, 68) Palpal tibia, dorsal view. (63) Distal suprategular apophysis. (64) Embolic division. (69) Distal suprategular apophysis and embolus.