Condylostylus nebulosus (Matsumura, 1916)

Grichanov, I. Ya. & Selivanova, O. O., 2022, The long-legged flies (Diptera: Dolichopodidae) from Kurile Islands, with description of a new species of the genus Sciapus Zeller, 1842, Far Eastern Entomologist 445, pp. 7-24 : 9-10

Condylostylus nebulosus (Matsumura, 1916)

MATERIAL EXAMINED. Kunashir I.: Yuzhno-Kurilsk env., 26.VIII 1980, 1♀, Lelei ;

Alyokhino, 13–16.VIII 1988, 2♀, Basarukin; 9 km S Yuzhno-Kurilsk, Kislaya River valley ,

21.VIII 1989, 1♀, Sidorenko; Tretyakovo env., near stream, 43°59'05.9'' N, 145°39'21.1'' E,

18–24.VIII 2008, 1♂, 2♀, I. Melnik; Tretyakovo, 10.VII 1985, 2 ♂, 2♀, S. Churkin; same locality , 21.VII 1985, 1 ♂, 2♀, S. Churkin; same locality 21.VII 1984, 1♀, S. Churkin; same locality , 10.VIII 1973, 1 ♂, Kasparjan; 9 km from Yuzhno-Kurilsk, Mendeleev Volcano,

43.98°N 145.75°E, 9.VII 1979, 1 ♂, A. Zinovjev. Japan: [hand-written in Japanese], 14.IV

1928, 1♀, H. Yaku.

DISTRIBUTION. Russia (Kurile Is.: Kunashir) (Negrobov, 1984a: 1113), Japan (Kyushu,

Shikoku, Honshu, Hokkaido.),? Oriental Region .

NOTES. Four species of Condylostylus are known from Japan, of which two species have yellow mid and hind coxae, i.e., C. nebulosus (type locality in Japan) and C. luteicoxa

Parent, 1929 (type locality in India). Bickel (1994) placed C. vigilans Becker, 1922 (described from Taiwan and India) in synonymy to C. nebulosus . The two latter species were not re-described, but C. nebulosus was included in the keys (Bickel, 1994; Yang et al., 2011)

with such character as “Mid tarsus [of male] without pale crocheted setae” to distinguish it from C. luteicoxa . However, C. nebulosus was originally described without male secondary sexual characters (Matsumura, 1916), and male mid tarsus of C. vigilans was not described by Becker (1922). Males examined from Kunashir have the same rows of crocheted setae on mid tibia and tarsus as those described by Parent (1929) and others for C. luteicoxa , but the colour of the curved setae are black rather than pale. In addition, C. luteicoxa was described with reddish-brown antenna, while C. nebulosus material from Japan and Kunashir have entirely black antenna. We refer the Kurilian males and females to C. nebulosus . The records of this species outside Japan and Kunashir must be revised.