Phryno tenuiforceps, Tachi, Takuji, 2013

Tachi, Takuji, 2013, Systematic study of the genera Phryno Robineau-Desvoidy and Botria Rondani in the Palearctic Region, with discussions of their phylogenetic positions (Diptera, Tachinidae), Zootaxa 3609 (4), pp. 361-391 : 372-374

Phryno tenuiforceps sp. nov.

( Figs. 16–18 )

Diagnosis. Male antenna with first flagellomere long, 5.5–6.5 times as long as pedicel; parafacial subequal in width to first flagellomere or slightly wider; male postabdomen with surstylus slender and longer than cerci in lateral view, strongly curved inward on basal half in dorsal view.

Description. Male. Face, parafacial, fronto-orbital plate and lower part of gena with whitish gray pruinosity; frontal vitta black or dark brown; upper part of gena, scape and pedicel reddish orange, first flagellomere and arista black or dark brown; palpus light yellow to orange. Vertex 0.30–0.33 of head width; frontal vitta in width to frontoorbital plate at middle; parafacial subequal in width to first flagellomere or slightly wider; gena 0.34–0.37 of eye height; antenna with first flagellomere 5.5–6.5 times as long as pedicel and 4.0–4.5 times as long as wide.

Thoracic dorsum and pleura black in ground color with grayish white or grayish yellow pruinosity; postpronotal lobe with grayish white pruinosity; basal 1/4–1/3 of scutellum black, apical 2/3–3/4 orange; apical scutellar setae usually fine and crossed.

Wing. Vein M with section between crossvein dm-cu and bend approximately 1.5 times as long as that between bend and wing margin. Relative lengths of costal sectors second, third and fourth approximately as 4.0: 7.5: 3.8; ultimate section of CuA1 0.22–0.24 times as long as penultimate section and 0.7–0.8 times as long as crossvein dmcu.

Legs. Femora light brown with dense gray or blackish gray pruinosity on basal 2/3–3/4, orange yellow on apicoventral [= ventrodistal] 1/3–1/4 of femora, tibiae and tarsi.

Abdomen. Black in ground color, with dense whitish gray pruinosity on all terga.

Male postabdomen. Surstylus slender and longer than cerci in lateral view, strongly curved inward at basal half in dorsal view; cerci rather broad and rounded apically in lateral view, nearly triangular in dorsal view.

Female. Similar to male, but differing as follows: vertex slightly wider, approximately 0.34 of head width; legs entirely orange or reddish yellow; antenna with first flagellomere short, 4.5–5.0 times as long as pedicel.

Body length. 7.2–8.8 mm.

Holotype male (BLKU), Karuizawa, Nagano Prefecture, Honshu, Japan, 29.iv.1973, R. Kano.

Paratypes. JAPAN. Hokkaido: 1 male (SEHU), Nopporo, Sapporo City, 18.iv.1968, T. Kocha; 1 male (SEHU), Fujinosawa, 19.v.1968, S. Umezawa. Honshu: 1 male (BLKU), Ohyagi, Moroyama Town, Saitama Prefecture, 18.iii.1979, T. Tamaki; 2 males (BLKU), Yatsugatake, Nagano Prefecture, 29.v.1975 (Malaise Trap), A. Nakanishi and J. Emoto; 3 males (BLKU), Kanayama (Masutomi), Yamanashi Prefecture, 26–27.v., 2.vi.1975 (Malaise Trap), Nakanishi and J. Emoto; 1 male (HYO), Futatabi, Kobe City, Hyogo Prefecture, 27.iv.1965, A. Tanaka; 2 males (BLKU), Seppikogen, Hyogo Prefecture, 19.iv.1966, M. Miyazaki. Shikoku: 1 male (BLKU), Oda Town, Ehima Prefecture, 2.iv.1990, E. Yamamoto; 1 female (BLKU), Odamiyama, Ehima Prefecture, 19.v.1995, E. Yamamoto. Kyushu: 1 male, 1 female (BLKU), Aburayama, Fukuoka City, Fukuoka Prefecture, 7–14, 21–28.iv.1983 (Yellow Pan Trap), H. Shima; 2 males, 1 female (BLKU) Mt. Inunaki, Fukuoka Prefecture, 22–29.iii.1983 (Yellow Pan Trap), 30.iii.1997, H. Shima & T. Tachi; 1 male (SEHU), Mt. Hikosan, Fukuoka Prefecture, 16.v.1967, M. Suwa; 1 male (BLKU), Mt. Kuju, Ohita Prefecture, 12.iv.1963, A. Kato. SOUTH KOREA. 1 male (BLKU), Hakcheon (500 m), Sannae-Myeon, 10.v.1991, T. Saigusa. RUSSIA. S. Primor’ye, Khabarovsk, Khekhzir Range, 17.v.1992, T. Saigusa.

Etymology. This name is taken from the shape of the surstylus in the male postabdomen.

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu), South Korea, Russia (S. Primor’ye).

Host. Unknown.

Figures

FIGURES 16 – 18. Male postabdomen of P. tenuiforceps sp. nov. (paratype). 16. Epandrium, cerci and surstylus in lateral view. 17. Same in dorsal view (setae omitted on left side). 18. Hypandrium, pregonite, postgonite and phallus in lateral view. Scale bars = 0.5 mm.