Evacin besar, Prószyński, 2018

Prószyński, Jerzy, 2018, Review of genera Evarcha and Nigorella, with comments on Emertonius, Padilothorax, Stagetillus, and description of five new genera and two new species (Araneae: Salticidae) *, Ecologica Montenegrina 16, pp. 130-179 : 146

Evacin besar sp. n.

Figure 8

Material: Holotype male " Evarcha sp. Malaysia: Sabah: Sukau - Bukit Tamanggong Besar (899), March 31st, 2003, primary vegetation on limestone"; 1 male paratype " Evarcha sp. Malaysia: Sabah - Danum Valley (910), April 15th, 2003. Slightly disturbed primary lowland rainforest along river" - both specimen in the coll. of P. Koomen. Description based on ©photographic documentation by P. Koomen.

Etymology. Specific name based on collecting locality Bukit Tamanggong Besar, word "besar " means "great" in Bahasa Malaya language.

Remarks. The description of this species is a test of defining species based on extensive photo documentation of diagnostic characters, different from ALL relevant species heretofore described ( Figs 8 AH.). Preliminary identification of the species and arrangement of characters on the plate by P. Koomen.

Diagnosis. Characters documented on Fig. 8 A-H, details of special significance are arising point of embolus at the latero-posterior point of tegular rim and fine details of slightly waving tibial apophysis ( Fig. 8 E-G).

Description. Carapace shape and proportions resembling Evarcha s. s. and other related genera, from which differs by narrow, gradually narrowing and pointed abdomen. Noticeable difference from other species of Evacin and related genera seems to be rare black coloration of fresh specimen ( Fig. 8A ), lost after preservation in alcohol ( Figs 8 B-C). Also important are arising point of embolus at the latero-posterior point of tegular rim, by tegulum gently convex, without protuberance and by details of slightly waving tibial apophysis ( Fig. 8 E-G).

Distribution. Malaysia: Borneo: Sabah - Sukau and Danum Valley.

Figures

Figure 8. Diagnostic characters of Evacin besar sp. n. A - general appearance of fresh specimen, B-C - appearance of specimen discolored due to long preservation in ethyl alcohol, D - frontal view, E-G - palpal tarsus and tibia - dorsal, lateral and ventral view, H - cheliceral dentition.