Tijdschrift voor entomologie . do; 19, Shikoku (Betssiyama,Ehime); 26 29, Kyushu (Shiratoriyama, Ku-mamoto; Chojabaru, Oita). Characteristics. — N. subpallida can easily berecognized by the characters mentioned in thekey. The female cerei are relatively broad andshort (fig. 17). The male intromittent organ hasthe apical two-thirds trifid, a character knownfrom the flavescens subgroup of the cornicinagroup only (Oosterbroek, 1980). Distribution and period of flight. — The spe-cies was known from Honshu only, but materialwas examined now from Sado, Shikoku andKyushu as well. Adults were collecte
Tijdschrift voor entomologie . do; 19, Shikoku (Betssiyama,Ehime); 26 29, Kyushu (Shiratoriyama, Ku-mamoto; Chojabaru, Oita). Characteristics. — N. subpallida can easily berecognized by the characters mentioned in thekey. The female cerei are relatively broad andshort (fig. 17). The male intromittent organ hasthe apical two-thirds trifid, a character knownfrom the flavescens subgroup of the cornicinagroup only (Oosterbroek, 1980). Distribution and period of flight. — The spe-cies was known from Honshu only, but materialwas examined now from Sado, Shikoku andKyushu as well. Adults were collected between May 28 and August 3, with one record fromSeptember 25. The parvirostra group Nephrotoma daisensis Alexander, 1935(figs. 21-24)Nephrotoma daisensis Alexander, 1935b: 236—, 1953c: 145, 146. Ishida, 1955: 120,, 1981: daisensis; Savchenko, 1973: 161, 162. Material examined. — Holotype 9, in goodcondition, labelled Mt Daisen Tottori, Japan800 met. vi-6, 30 Nibi Holotype Nephroto-. Figs. 21—24. N. daisensis. Fig. 21. Head, dorsal view. Fig. 22. Hypopygium, lateral view. Fig. 23. Left innerdististyle, from outside. Fig. 24. Extension of male tergite 9, dorsal view. 248 Tijdschrift voor Entomologie, deel 127, afl. 11, 1984 (1985) ma daisensis C. P. Alexander (USNMA; MtDalsen is on Honshu); other material: Icî 29,Honshu (Rokushosan, Fukui; Kurokawa, Echi-go); \ 6, Tsushima (Mt Ariake); 19, South Ko-rea (Central Nat. Forest, 18 mi NE Seoul). Characteristics. — The structures of the ex-tension of the male tergite 9 (fig. 24) and the in-ner dististyle (fig. 23) clearly show that the spe-cies is closely related to parvirostra. The colora-tion, however, is very different from theyellowish parvirostra. The occipital marking islarge and of a characteristic shape (fig. 21), thethorax is variegated with large dark brown toblack markings, the abdominal tergites 2—5possess large triangular markings on the poste-rior two-thirds and the seg
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectentomology, bookyear1
