Kalimagone cuspidata, 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 : 145

Kalimagone cuspidata sp. nov.

Figs 22-26 , 35-41

Holotype: Male; Borneo, East Malaysia, Sabah, West Coast Residency , Kinabalu National Park , Mt Kinabalu , 2590 m a.s.l., misty forest below Layang Layang, plant debris in wet ravine, sifting; 1.V.1987; leg. D. Burckhardt & I. Löbl [# 10a ].

Paratypes: 2 males, 20 females; collected together with the holotype. – 1 male; Mt Kinabalu, 1750 m a.s.l., Liwagu Trail, rotten wood and other debris along trunk at foot of stump, sifting bark; 27.IV.1987; leg. D. Burckhardt & I. Löbl [#5a]. – 1 male; Mt Kinabalu, 1540 m a.s.l., Liwagu Trail, plant debris in small ravine at foot of old trees, sifting; 29.IV.1987; leg. D. Burckhardt & I. Löbl [#8a].

Diagnosis: This species is characterized by the presence of a short, narrow process on the male palpal tibia, by the apically pointed distal suprategular apophysis in the male, as well as by the rounded receptacula in the female.

Etymology: The specific epithet is a Latin adjective referring to the shape of the apical part of the distal suprategular apophysis.

Description: Male (paratype). Total length 1.75, habitus as shown in Figs 22-23 . Carapace unmodified, 0.85 long, 0.68 wide, pale yellow-brown, with indistinct, grey, radial stripes and darker margin; sulci absent. Chelicerae 0.35 long. Legs yellow. Leg I 3.37 long (0.88+0.23+0.88+0.75+0.63), leg IV 3.26 long (0.88+0.20+0.88+0.80+0.50). Chaetotaxy 2.2.1.1, length of spines about 1.5-2 diameters of segment. TmI 0.55. All metatarsi with a trichobothrium. Palp ( Figs 35-40 ): Tibia elongated, ending in a short, narrow process. Paracymbium L-shaped, with a small, sharp tooth in middle part. Tegulum narrowed, pale. Distal suprategular apophysis massive, with a long median apophysis (MA in Figs 36, 40 ). Radix small, rounded, embolus relatively long and narrow. Abdomen 1.03 long, 0.70 wide, dorsal pattern as shown in Fig. 23 .

Female. Total length 1.88, habitus as shown in Fig. 24 . Carapace unmodified, 0.88 long, 0.70 wide. Chelicerae 0.35 long. Leg I 3.38 long (1.00+0.25+0.88+0.70+0.55), leg IV 3.33 long (0.95+0.25+0.85+0.80+0.48). Chaetotaxy 2.2.1.1, length of spines about 2-3 diameters of segment. TmI 0.61. Abdomen 1.13 long, 0.75 wide, dorsal and ventral pattern as shown in Figs 24 and 25 , respectively. Epigyne ( Figs 25-26 , 41 ): median plate with straight or slightly curved lateral edges, receptacles rounded. Carapace and leg coloration as in male.

Taxonomic remarks: The species is similar to its only known congener, Kalimagone rotunda sp. nov. (see below).

Distribution: Known only from the type locality in the northeast of Borneo Island.

Figures

Figs 22 - 34. Photographs of Kalimagone cuspidata sp. nov., male and female paratypes from Mt Kinabalu (22 - 26), of K. rotunda sp. nov., male holotype and female paratype (27 - 30), and of Oedothorax bifoveatus sp. nov., male and female paratypes from Cibodas Botanical Garden (31 - 34). (22 - 23, 27) Male habitus. (31) Male cephalothorax, lateral view. (24, 28, 32) Female habitus. (25, 29, 33) Female abdomen, ventral view. (26, 30, 34) Epigyne, ventral view.

Figs 35 - 45. Kalimagone cuspidata sp. nov., male and female paratypes from Mt Kinabalu (35 - 41), and Kalimagone rotunda sp. nov., male holotype and female paratype (42 - 45). (35, 42) Right palp, retrolateral view. (36, 43) Right palp, prolateral view. (37) Palpal tibia and paracymbium, retrolateral view. (38, 44) Palpal tibia, dorsal view. (39 - 40) Distal suprategular apophysis and embolic division, different aspects. (41, 45) Epigyne, ventral view.