Belisana jaegeri, Zhu & Li, 2021

Zhu, Wenhui & Li, Shuqiang, 2021, Six new species of the spider genus Belisana (Araneae: Pholcidae) from Southeast Asia, Zootaxa 4963 (1), pp. 115-137 : 122

publication ID	https://doi.org/ 10.11646/zootaxa.4963.1.5
publication LSID	lsid:zoobank.org:pub:6B4B8F71-7B08-4027-A76B-7EE8C987C9BD
DOI	https://doi.org/10.5281/zenodo.4697000
persistent identifier	https://treatment.plazi.org/id/4E3C87F3-FFC6-FF96-C6EC-FEFEFC6CF957
treatment provided by	Plazi
scientific name	Belisana jaegeri
status	sp. nov.

Treatment

Belisana jaegeri View in CoL sp. nov.

Figs 5– 6 View FIGURE 5 View FIGURE 6 , 13E–F View FIGURE 13 , 14E–F View FIGURE 14 , 15C View FIGURE 15

Type material. Holotype: Male ( SMF), secondary forest (3°43’06.30”N, 101°45’09.86”E, elevation 1300 m), Telecom loop, Fraser’s Hill, Pahang, Malay Peninsula, Malaysia, 16 February 2015, P. Jäger & T. Laufs leg. GoogleMaps Paratype: 1 female ( SMF), same data as holotype GoogleMaps .

Etymology. The specific name is a patronym in honor of the collector Peter Jäger; noun (name) in genitive case.

Diagnosis. This species resembles B. fraser Huber, 2005 (see Huber 2005: 51, figs 69, 320–324) and B. xiaolongha Zhu & Li, 2021 (see Zhu & Li 2021: 561, figs 3– 4, 5E –F) with the elongated bulbal apophyses ( Fig. 6D View FIGURE 6 ), but males can be distinguished by brown marks on the clypeus ( Fig. 6I View FIGURE 6 ). They also can be distinguished from B. fraser by having the cheliceral distal apophyses directed laterally (arrow da in Figs. 6C View FIGURE 6 , 15C View FIGURE 15 ; distal apophyses directed anteriorly in B. fraser ), and females can be distinguished by having frontal “epigynal” pockets laterally on the sclerotized plate (arrow ep in Figs 6A–B View FIGURE 6 , 14E–F View FIGURE 14 ) and curved vulval pore plates (arrow pp in Figs 6B View FIGURE 6 , 14F View FIGURE 14 ). Females differ from B. xiaolongha by the semicircular flap and by a distal spine seen in retrolateral view of the procursus ( Figs 5B, 5D View FIGURE 5 , 13F View FIGURE 13 ; narrow flap in B. xiaolongha ).

Description. Male (holotype): Total length 2.03 (2.19 with clypeus), carapace 0.88 long, 0.78 wide, opisthosoma 1.31 long, 0.88 wide. Leg I missing, leg II: 14.71 (3.85 + 0.40 + 3.53 + 5.58 + 1.35), leg III: 9.02 (2.56 + 0.30 + 2.12 + 3.21 + 0.83), leg IV: 12.53 (3.53 + 0.34 + 3.21 + 4.49 + 0.96). Distance PME-PME 0.11, diameter PME 0.06, distance PME-ALE 0.09, AME absent. Habitus as in Figs 6E–F View FIGURE 6 . Carapace pale, with brown lateral margins. Ocular area not elevated. Clypeus ( Fig. 6I View FIGURE 6 ) with brown marks, unmodified. Chelicerae ( Figs. 6C View FIGURE 6 , 15C View FIGURE 15 ) 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: 0.62). Sternum pale, slightly wider than long (0.63/0.56). Thoracic furrow absent. Legs pale, but dark brown on femur, patellae and tibia-metatarsus joints, without darker rings. Opisthosoma pale, without spots. Palps as in Figs 5A–B View FIGURE 5 ; coxa unmodified; trochanter with short retrolatero-ventral apophysis; femur with small ventral hump (arrow 1 in Fig. 5B View FIGURE 5 ) and small proximo-dorsal apophysis (arrow 2 in Fig. 5B View FIGURE 5 ); procursus ( Figs 5A–D View FIGURE 5 , 13E–F View FIGURE 13 ) simple proximally but complex distally, with curved subdisto-dorsal sclerite (arrow 1 in Figs 5C View FIGURE 5 , 13E View FIGURE 13 ), long disto-prolateral spine (arrow 2 in Figs 5C View FIGURE 5 , 13E View FIGURE 13 ), long subdisto-prolateral sclerite (arrow 3 in Figs 5C View FIGURE 5 , 13E View FIGURE 13 ), disto-retrolateral membranous lamella (arrow in Figs 5D View FIGURE 5 , 13F View FIGURE 13 ) and semicircular retrolateral membranous flap (arrow f in Figs 5D View FIGURE 5 , 13F View FIGURE 13 ); bulb ( Fig. 6D View FIGURE 6 ) with hooked apophysis and simple embolus. Legs with short vertical setae on metatarsi, without spines and curved setae.

Female: Similar to male, habitus as in Figs 6G–H View FIGURE 6 . Total length 2.22 (2.31 with clypeus), carapace 0.84 long, 0.88 wide, opisthosoma 1.47 long, 0.91 wide. Tibia I: 4.17; tibia I L/d: 42. Distance PME-PME 0.16, diameter PME 0.09, distance PME-ALE 0.09, AME absent. Sternum slightly wider than long (0.59/0.50). Clypeus pale, without marks. External female genitalia ( Figs 6A View FIGURE 6 , 14E View FIGURE 14 ) simple and flat, with pair of frontal “epigynal” pockets (arrow ep in Figs 6A–B View FIGURE 6 , 14E–F View FIGURE 14 ), 0.54 apart. Vulva ( Figs 6B View FIGURE 6 , 14F View FIGURE 14 ) with pointed anterior arch and pair of large, curved and oval pore plates (arrow pp in Figs 6B View FIGURE 6 , 14F View FIGURE 14 ), without serrated sclerites.