Pygophora lepidofera ( Stein, 1915 )

Yoshizawa, Satoshi & Tachi, Takuji, 2018, Taxonomic review of the genus Pygophora Schiner of Japan (Diptera: Muscidae), Zootaxa 4418 (5), pp. 449-468 : 457

Pygophora lepidofera ( Stein, 1915)

( Figs. 1f , 5a–d , 12 )

Coenosia lepidofera Stein, 1915: 50 . Lectotype male (Senckenberg German Entomological Institute, Müncheberg, Germany), by designation of Crosskey (1962: 457). Type locality: Paroe, North Paiwan District, Taiwan.

Redescription. Male. Differing from P. boninensis as follows: first flagellomere 2.1–2.3 times as long as pedicel; wing brownish hyaline without brown spot; hind tibia with 2 anterodorsal, 2 posterodorsal, 4–5 posteroventral setae and without apical lobe; abdominal tergite 5 with leaf-like setae; abdominal sternite 5 nearly rectangular, bifurcated apically, apical part curved inward in ventral view; surstylus broad apically in lateral view, bifurcated at middle with many short setae apically in dorsal view; cerci long and broad with several setae apically in dorsal view; postgonite broad on apical 2/5 and apical part notched at middle; phallus broad and orbicular on apical 2/3 with large membranous areas laterally. Female. Differing from male as follows: all femora black in basal 3/4; hind tibia without posteroventral seta. Abdominal tergite 3 with three black spots; abdominal tergite 5 without leaf-like seta and dorsal keel. Female terminalia. Very similar to P. boninensis .

Body length. 3.3–4.0 mm.

Material examined. JAPAN: 1 male (BLKU), Gusuku , Sumiyo town, Amami city, Kagoshima pref., 1. VII. 2013 ; 1 male (BLKU), Kayo , Nago city, Okinawa pref., 23. VI. 2013 ; 1 male (BLKU), Sedake , Nago city, Okinawa pref., 26. VI. 2013 ; 5 males and 4 females (BLKU), Siramizu , Ishigaki city, Ishigakijima Is., Okinawa pref. [N 24°25’19” / E 124°9’50”], 22–31. V. 2012 ; 1 male ( BLKU), Aira river, Taketomi town , Yaeyama-gun, Iriomotejima Is., Okinawa pref., 21. VI. 2011 ; 1 female (BLKU), Urauchi , Taketomi town, Yaeyama-gun, Iriomotejima Is., Okinawa pref., 22. VI. 2011 .

Distribution. Japan (Kyushu, Ryukyu), China, Taiwan, Brunei, Malaysia.

Bionomics. This species was found and collected by the first author in a grassland.

Remarks. This species is easily distinguishable from other Japanese species by having leaf-like setae on the male abdominal tergite 5 ( Fig. 1f ).

Figures

FIGURE 1. Male and female adults of Pygophora species. P. boninensis Snyder: a, b. Habitus in lateral view (a. Male, b. Female). c, d. Wings in ventral view (c. Male, d. Female). e. Apical part of male hind tibia in anterior view. P. lepidofera (Stein): f. Male abdomen in dorsal view (arrow indicates leaf-like seta) (Scale bars = 2.0 mm in a–b; 1.0 mm in c–d, f; 0.2 mm in e).

FIGURE 5. Pygophora lepidofera (Stein), male sternite 5 and terminalia: a. Male sternite 5 in ventral view (setae omitted on the left side). b. Hypandrium, pregonite, postgonite, and phallus in lateral view. c. Epandrium, surstylus, and cerci in lateral view.d. Same in dorsal view (setae omitted on the left side) (Scale bars = 0.2 mm).

FIGURE 12. Distribution map for Pygophora spp. in Japan:P.boninensis Snyder (black star); P.confusa Stein (white star); P. immaculipennis Frey (black circle); P. lepidofera (Stein) (white circle); P. longicornis (Stein) (black triangle); P. macularis (Wiedemann) (white triangle); P. maculipennis Stein (black square); P. respondens (Walker) (white square); P.unicolor (Stein) (black hexagon).