Pelecystola strigosa (Moore, 1888) (New record for China)

Yang, Lin-Lin & Li, Hou-Hun, 2021, First report of the genus Pelecystola Meyrick (Lepidoptera, Tineidae) in China, with description of a new species, ZooKeys 1046, pp. 189-206 : 189

Pelecystola strigosa (Moore, 1888) (New record for China) Figures 4 , 5 , 7 , 9 , 11 , 13

Euplocamus strigosa Moore, 1888: 281.

Euplocamus hierophanta Meyrick, 1916: 617; Moriuti 1982: 163.

Semioscopis maculella Matsumura, 1931: 1093.

Pelecystola strigosa : Robinson et al. 1994; Robinson and Tuck 1996: 15; Sakai 2013: 135.

Material examined.

China: • 1♂; Yunnan Province, Ruili (24°00'N, 97°50'E), Rare Botanical Garden; alt. 1000 m; 5-viii-2005; leg. Yingdang Ren; genitalia slide No. YLL11078 • 1♂; Yunnan Province, Xishuangbanna (22°10'N, 100°51'E), Yexianggu; alt. 762 m; 17-vii-2014; leg. Kaijian Teng et al.; genitalia slide No. DNAYLL18053 • 2♂; Yunnan Province, Baoshan City (25°24'N, 98°45'E), Gaoligongshan, Baihualing; alt. 1470 m; 30-vii-2013; leg. Linlin Yang; genitalia slide Nos. YLL18067, YLL18070 • 1♂; Yunnan Province, Baihualing, Hanlongzhai ; alt. 1577 m; 5-viii-2015; leg. Kaili Liu and Jingxia Zhao; genitalia slide No. DNAYLL18068 • 1♂; Yunnan Province, Dehong, Ruili, Rare Botanical Garden ; alt. 1166 m; 17-viii-2015; leg. Jingxia Zhao; genitalia slide No. DNAYLL18065 • 1♂; Yunnan Province, Wenshan (23°10'N, 104°48'E), Masupo, Xiajinchang; alt. 1470 m; 27-vii-2016; leg. Kaijian Teng; genitalia slide No. DNAYLL18066 • 1♂; Hainan Province, Mt Jianfeng (18°50'N, 108°43'E), Tianchi; alt. 810 m; 30-iii-2008, leg. Bingbing Hu and Haiyan Bai; genitalia slide No. YLL13099 • 1 ♀; Xizang Autonomous Region, Bomi (29°51'N, 95°46'E), Sangdeng; alt. 2695 m; 21-viii-2017; leg. Mujie Qi, Xiaofei Yang; genitalia slide No. DNAYLL18054 .

Diagnosis.

Adults with wingspan 17.5-21.0 mm in male (Fig. 4 ), 32.5 mm in female (Fig. 5 ). Pelecystola strigosa is characterized by the bipectinate antenna (Figs 4a, b , 7a ); the forewing (Fig. 9 ) with R2 and R3 stalked less than half of their length, R4 and R5 stalked in basal 3/5, patterned (Figs 4 , 5 ) with a subtriangular basal patch in basal 1/5, with its posterior margin reaching to fold, a trapezoidal blotch at middle, and a small irregular patch near apex; the wide-deeply bilobed uncus with an ovate pouch at base of each lobe, the tegumen with a prominent triangular protrusion, the deeply divided valva with an elongate, slender stalk that enlarges apically and bearing a pectinifer consisting of minute spines in the male genitalia (Fig. 11 ); and the eighth sternite is strongly folded and forming a tapered plate ventral to the ostium, the elongate and slender ductus bursae, and the paired signa with each arm slender and plume-like in the female genitalia (Fig. 13 ).

Distribution.

China (Hainan, Yunnan, Xizang), India, Japan, Malaysia (Sabah), Indonesia (Sulawesi).

Remarks.

Pelecystola strigosa was originally described in Euplocamus and later assigned to Pelecystola ( Robinson et al. 1994; Robinson and Tuck 1996; Sakai 2013), with which it shares the peculiar pedunculate pectinifer arising on a long stalk from the costal base of the valva. The species superficially resembles Pelecystola decorata except for having bipectinate antennae in both sexes. Forewing venation in P. strigosa is quite different from its congeners. R2 and R3 stalked, R4 and R5 long stalked in P. strigosa , whereas all branches of R are separate in other Pelecystola species. Additionally, the maxillary palpus (Fig. 7b ) in P. strigosa has four palpomeres, with a ratio of 2:1:1:1. In its allies, such as P. nearctica , there are five palpomeres.

DNA barcode.

Five DNA barcodes from four males and one female were generated and deposited in GenBank and BOLD systems: MW396739/PELE006-20, MW396740/PELE007-20, MW396741/PELE008-20, MW396742/PELE009-20, MT749676/PELE002-20. For more details see the Suppl. material 1: Table S1.

Figures

Figures 2 - 5. Adults 2, 3 Pelecystola peculiaris sp. nov. 2 adult, holotype, male 2 a lateral view of head, paratype, male 3 adult, paratype, female 3 a dorsal view of head, paratype, female 4, 5 P. strigosa 4 adult, male 4 a dorsal view of head, male 4 b lateral view of head, male 5 adult, female. Scale bars: 5.0 mm (adults); 1.0 mm (heads).

Figures 6, 7. Head 6 Pelecystola peculiaris sp. nov. 6 a flagellum 6 b Maxillary palpus, paratype, male, slide No. YLL 20001 7 P. strigosa 7 a flagellum 7 b maxillary palpus, male, slide No. YLL 18066. Scale bars: 0.5 mm (6, 7), 0.1 mm (6 a, 6 b, 7 a, 7 b).

Figures 8, 9. Venation 8 Pelecystola peculiaris sp. nov., paratype, male, slide No. NKYLL 022 9 P. strigosa, male, slide No. YLL 18066. Scale bars: 2.0 mm.

Figures 10, 11. Male genitalia 10 Pelecystola peculiaris sp. nov., holotype, slide No. DNAYLL 18052 11 P. strigosa, slide No. YLL 18067. Scale bars: 0.5 mm.

Figures 12, 13. Female genitalia 12 Pelecystola peculiaris sp. nov., paratype, slide No. DNAYLL 18063 13 P. strigosa, slide No. DNAYLL 18054 Scale bars: 0.5 mm.