Pygophora longicornis ( Stein, 1918 )

Yoshizawa, Satoshi & Tachi, Takuji, 2018, Taxonomic review of the genus Pygophora Schiner of Japan (Diptera: Muscidae), Zootaxa 4418 (5), pp. 449-468 : 457-460

Pygophora longicornis ( Stein, 1918)

( Figs. 6a–d , 11b , 12 )

Coenosia longicornis Stein, 1918: 161 . Holotype male (Senckenberg German Entomological Institute, Müncheberg, Germany). Type locality: Tapani, Taiwan.

Pygophora simplex Hennig, 1952: 58 .

Pygophora trimaculata Karl, 1935 (misidentification): Shinonaga, 2003: 290.

Redescription. Male. Differing from P. boninensis as follows: first flagellomere 5.0–5.3 times as long as pedicel; wing brownish hyaline without brown spot; fore tibia with 3–4 anterodorsal setae; hind tibia with 5–7 anterodorsal, 4–6 posterodorsal setae and without posteroventral seta; abdominal tergites 3 and 5 with three black spots; abdominal tergite 5 without dorsal keel; abdominal sternite 5 long, concave at middle with several setae apically in ventral view; surstylus long, slightly curved ventrally with several setae in lateral view, nearly straight with strong setae apically in dorsal view; cerci broad basally and slender with many setae apically in dorsal view; postgonite slender and slightly curved dorsally at apical 2/5, apical part round; distiphallus broad and nearly triangular with large membranous areas laterally. Female. Differing from male as follows: first flagellomere shorter than male, 2.3–2.5 times as long as pedicel. Female terminalia. Very similar to P. boninensis except by hemitergite 8 short.

Body length. 4.3–5.2 mm.

Material examined. JAPAN: 2 females ( BLKU), Onoaida, Yakushima town , Yakushima Is. , Kumage-gun , Kagoshima pref. [N 30°14’39” / E 130°33’30”], 7–9. III. 2013 ; 2 males ( BLKU), Gusuku, Sumiyo town, Amami city, Kagoshima pref., 3–4. VII. 2013 ; 1 male ( BLKU), Gogayama, Imakiri Vil., Kunigami-gun , Okinawa pref. [N 26°39’23” / E 127°57’40”], 21. VI. 2013 ; 1 male ( BLKU), Hama, Kunigami Vil., Kunigami-gun , Okinawa pref. [N 26°42’32” / E 128°10’54”], 22. VI. 2013 ; 1 male (EUM), Ohara, Taketomi town , Iriomotejima Is., Yaeyama-gun, 15–16. XI. 1963 ; 2 males ( BLKU), Urauchi river, Taketomi town, Iriomotejima Is. , Yaeyama-gun , Okinawa pref. [N 24°24’15” / E 123°46’56”], 22. VI. 2011 .

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

Bionomics. This species was found and collected by the first author in a forest. Remarks. This species is distinguishable from other species by having 5–7 anterodorsal and 4–6 posterodorsal setae on the hind tibia in both sexes.

Figures

FIGURE 6. Pygophora longicornis (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 11. Female terminalia of species of Pygophora in lateral view: a. P. boninensis Snyder. b. P. longicornis (Stein) (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).