Khorata bayeri spec. nov.

Figs 17–29

Type material. THAILAND: Trat Province: holotype male, Gulf of Thailand, Ko Chang, Kheeri Phet, 12 °00.046′N, 102 ° 21.153 ′E, alt. 50–150 m, secondary forest, by hand, sieving, sweep-net during day, 2 November 2009, P. Jäger, S. Bayer (SMF). Paratype: 1 male, Gulf of Thailand, Ko Chang, Klong Phlu school, 12 °03.425′N, 102 ° 18.052 ′E, alt. 78 m, vegetation, empty stream bed with moist soil, by hand at night, 1 November 2009, P. Jäger, S. Bayer (SMF).

Etymology. The specific name is a patronym in honour of the collector Steffen Bayer; noun (name) in genitive case.

Diagnosis. Khorata bayeri spec. nov. resembles K. bangkok Huber, 2005 (see Huber 2005 b, figs 148–150, 166 – 167) and K. schwendingeri Huber, 2005 (see Huber 2005 b, figs 146–147, 161 – 165) in the shape of the distal apophyses of the procursus, but can be distinguished by the relatively long, thumb-shaped proximo-lateral apophyses on the male chelicerae, each provided with a small frontal spur (Figs 21 –22, 28– 29; proximo-lateral apophyses relatively short and provided with a large frontal spur in K. bangkok and K. schwendingeri); by the relatively wide and short distal pedipalpal apophysis with a sharp tip of the procursus (Figs 17 –20, 26– 27; distal apophysis thin and long in K. bangkok and K. schwendingeri); and by the presence of brown lateral margins on the dorsal shield of prosoma (Figs 23, 25; brown lateral margins absent in K. bangkok, lateral margins indistinct in K. schwendingeri).

Description. Male (holotype): Total length 1.70 (1.74 with clypeus), prosoma 0.60 long, 0.66 wide, opisthosoma 1.10 long, 0.77 wide. Leg I: 9.95 (2.53 + 0.27 + 2.50 + 3.40 + 1.25), leg II: 6.39 (1.84 + 0.24 + 1.53 + 2.06 + 0.72), leg III: 5.00 (1.44 + 0.23 + 1.16 + 1.64 + 0.53), leg IV: 6.52 (1.94 + 0.25 + 1.57 + 2.20 + 0.56); tibia I L/d: 42. Habitus as in Figs 23–25. Dorsal shield of prosoma yellowish, with brown margins and a brown median stripe behind ocular area; sternum brown. Legs yellowish, with slightly darker subdistal rings on femora and tibiae. Opisthosoma grey, with large brown spots. Distance PME-PME 0.04, diameter PME 0.11, distance PME-ALE 0.02, AME absent. Ocular area slightly elevated and separated from rest of prosoma. Thoracic furrow shallow, but distinct. Sternum slightly wider than long (0.55 / 0.46). Chelicerae as in Figs 21 –22, 28– 29, with a pair of long, hooked frontal apophyses provided with scales distally (tips of frontal apophyses close together), a pair of thumbshaped proximo-lateral apophyses provided with an elliptic frontal spur each, and a pair of small distal apophyses on fronto-lateral surface. Pedipalp as in Figs 17 –18, 26– 27; trochanter with a short retrolateral apophysis and a small ventral apophysis; femur with a retrolateral apophysis; patella large; procursus simple proximally but complex distally, with a black, wide distal apophysis provided with a sharply pointed tip; bulb simple, no other apophyses except for embolus. Retrolateral trichobothrium of tibia I at 15 % of length; legs with short vertical hairs on metatarsi, without spines and curved hairs; tarsus I with about 20 distinct pseudosegments.

Variation: Tibia I in another male: 2.75.

Female: Unknown.

Distribution. Known from two localities in Ko Chang, Thailand (Fig. 57). This distribution represents the southernmost record for the genus.