Belisana kachin Zhu & Li 2021
- Dataset
- Six new species of the spider genus Belisana (Araneae: Pholcidae) from Southeast Asia
- Rank
- SPECIES
- Published in
- Zhu, Wenhui, Li, Shuqiang (2021): Six new species of the spider genus Belisana (Araneae: Pholcidae) from Southeast Asia. Zootaxa 4963 (1): 115-137, DOI: 10.11646/zootaxa.4963.1.5
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Arachnida
- order
- Araneae
- family
- Pholcidae
- genus
- Belisana
- species
- Belisana kachin
description
Description. Male (holotype, IZCAS Ar 41907): Total length 1.70 (1.76 with clypeus), carapace 0.64 long, 0.62 wide, opisthosoma 1.12 long, 0.60 wide. Leg I: 16.34 (4.49 + 0.25 + 4.10 + 6.35 + 1.15), leg II: 11.13 (3.40 + 0.23 + 2.82 + 3.85 + 0.83), leg III: 7.44 (2.18 + 0.20 + 1.92 + 2.56 + 0.58), leg IV: 9.70 (2.88 + 0.21 + 2.69 + 3.21 + 0.71); tibia I L / d: 43. Distance PME-PME 0.19, diameter PME 0.06, distance PME-ALE 0.08, AME absent. Habitus as in Figs 8 E – F. Carapace pale. Ocular area not elevated. Clypeus unmodified. Chelicerae (Figs. 8 C, 15 D) 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: 0.44). Sternum pale, slightly wider than long (0.53 / 0.52). Thoracic furrow absent. Legs pale. Opisthosoma pale, without spots. Palps as in Figs 7 A – B; coxa unmodified; trochanter with ventral apophysis (arrow in Fig. 7 B); femur without proximo-dorsal apophysis; procursus (Figs 7 A – D, 13 G – H) simple proximally but complex distally, with curved subdisto-dorsal sclerite (arrow 1 in Figs 7 C, 13 G), large distoprolateral sclerite (arrow 2 in Figs 7 C, 13 G), inverted L-shaped subdisto-prolateral sclerite (arrow 3 in Figs 7 C, 13 G) and disto-retrolateral membranous lamella (arrow in Figs 7 D, 13 H); bulb (Fig. 8 D) with hooked apophysis and simple embolus. Retrolateral trichobothria of tibia Iat 5 % proximally; legs with short vertical setae on metatarsi, without spines or curved setae; tarsus Iwith 9 distinct pseudopodomeres. Female (IZCAS Ar 41909): Similar to male, habitus as in Figs 8 G – H. Total length 1.60 (1.66 with clypeus), carapace 0.60 long, 0.52 wide, opisthosoma 1.06 long, 0.60 wide. Tibia I: 1.75; tibia I L / d: 21. Distance PME-PME 0.13, diameter PME 0.05, distance PME-ALE 0.04, AME absent. Sternum slightly wider than long (0.44 / 0.42). External female genitalia (Figs 8 A, 14 G) simple and flat, with pair of frontal “ epigynal ” pockets laterally on sclerotized plate (arrow ep in Figs 8 A – B, 14 G – H), 0.42 apart. Vulva (Figs 8 B, 14 H) with pointed anterior arch extending to posterior part, with scaly edge (arrow in Figs 8 B, 14 H) and pair of large pore plates (arrow pp in Figs 8 B, 14 H), without serrated sclerites. Variation: Tibia Iin another male (IZCAS Ar 41908): 4.04. Natural history. The species was found on domed webs attached to the underside of leaves.
description
Figs 7 – 8, 13 G – H, 14 G – H, 15 D
diagnosis
Diagnosis. This species resembles B. nujiang Huber, 2005 (see Huber 2005: 14, figs 7, 8, 57, 83 – 87, 93 – 111) with the elongated distal apophyses on the male chelicerae (Figs. 8 C, 15 D) and bulbal apophyses (Fig. 8 D), but males can be distinguished by the absence of a distal spine and retrolateral flap on the procursus (Fig. 7 D, 13 H). Females can be distinguished from other species by the external genitalia with an anterior arch extending to the posterior part (arrow in Figs 8 B, 14 H; anterior arch extending to the median part in B. nujiang) and the different shape of the pore plates (arrow pp in Figs 8 B, 14 H).
distribution
Distribution. Myanmar (Kachin, type locality only; Fig. 16).
etymology
Etymology. The specific name refers to the type locality and is a noun in apposition.
materials_examined
Type material. Holotype: Male (IZCAS Ar 41907), Roadside between Camp 2 to Ziradum (27 ° 34 ’ 38.76 ” N, 97 ° 04 ’ 32.64 ” E, elevation 1171 m), Hponkanrazi Wildlife Sanctuary, Putao, Kachin, Myanmar, 12 May 2017, Z. Chen & J. Wu leg. Paratypes: 2 females (IZCAS Ar 41908 – 41909), same data as holotype.
Name
- Homonyms
- Belisana kachin Zhu & Li 2021