Figs 9–10, 13I–J, 15E
Type material. Holotype: Male (IZCAS Ar41910), roadside between Wasadum and Ziradum (27°29’48.78”N, 97°10’15.90”E, elevation 874 m), Putao, Kachin, Myanmar, 07 May 2017, Z. Chen & J. Wu leg.
Etymology. The specific name refers to the type locality and is a noun in apposition.
Diagnosis. This species resembles B. pianma Huber, 2005 (see Huber 2005: 14, figs 5, 6, 56, 88–92, 112–130) with the elongated distal apophyses on the male chelicerae (Figs. 10B, 15E) but can be distinguished by the presence of a subdisto-ventral membranous lamella (arrow 3 in Figs 9C, 13I) on the procursus, a pair of angular apophyses on the bulbal apophyses (arrow in Figs 10A), the absence of a ventral hump on the palpal femur and a pair of apophyses on the clypeus.
Description. Male (holotype, IZCAS Ar41910): Total length 1.60 (1.66 with clypeus), carapace 0.66 long, 0.66 wide, opisthosoma 1.00 long, 0.53 wide. Leg I: 11.39 (3.00 + 0.17 + 2.97 + 4.09 + 1.16), leg II: 7.65 (2.03 + 0.15 + 1.91 + 2.72 + 0.84), leg III: 4.85 (1.41 + 0.09 + 1.13 + 1.59 + 0.63), leg IV: 8.04 (2.28 + 0.16 + 1.94 + 2.75 + 0.91); tibia I L/d: 50. Distance PME-PME 0.14, diameter PME 0.06, distance PME-ALE 0.09, AME absent. Habitus as in Figs 10C–E. Carapace pale. Ocular area not elevated. Clypeus unmodified. Chelicerae (Figs. 10B, 15E) with pair of small proximo-lateral apophyses and pair of long, curved distal apophyses, each with sclerotized and pointed tip (distance between tips of distal apophyses: 0.39). Sternum pale, approximately as wide as long (0.41). Thoracic furrow absent. Legs pale. Opisthosoma pale, without spots. Palps as in Figs 9A–B; coxa unmodified; trochanter with short retrolatero-ventral apophysis; femur with retrolatero-dorsal apophysis (arrow in Fig 9B); procursus (Figs 9A–D) curved (arrow in Fig. 9A), complex distally, with droplet-shaped subdisto-dorsal sclerite (arrow 1 in Figs 9C, 13I), small subdisto-prolateral sclerite (arrow 2 in Figs 9C, 13I), semicircular subdisto-prolateral membranous lamella (arrow 3 in Figs 9C, 13I), subdisto-ventral membranous lamella (arrow in Figs 9D, 13J) and with retrolateral membranous flap (arrow f in Figs 9D, 13J); bulb (Fig. 10A) with hooked apophysis (pair of angular apophyses subdistally, arrow in Figs 10A) and simple embolus. Retrolateral trichobothria of tibia Iat 6% proximally; legs with short vertical setae on metatarsi, without spines and curved setae; tarsus Iwith 15 distinct pseudopodomeres.
Female: Unknown.
Natural history. The species was found on domed webs attached to the underside of leaves.
Distribution. Myanmar (Kachin, type locality only; Fig. 16).