Abstract
Japanese species of the genus Nipponomyia Alexander, 1924 are revised. Two new species, Nipponomyia okinawensis Kolcsár & Kato, sp. nov. and N. yakushimensis Kolcsár & Kato, sp. nov. are described from the Ryukyu Islands. Images of habitus and wings, illustrations of male and female terminalia, and distribution maps are provided for the Japanese species. A key to the world species of Nipponomyia is added. DNA barcodes of three Japanese Nipponomyia are provided, representing the first barcodes from the genus.
Highlights
Nipponomyia Alexander, 1924 is a small crane fly genus belonging to the Pediciidae (Diptera: Tipuloidea)
The genus was established based on the Japanese species Tricyphona kuwanai Alexander, 1913 and named after Japan (Nippon in Japanese)
Nipponomyia is morphologically characterized by the combination of the following characters: compound eye appearing bare, wing with a conspicuous yellow longitudinal stripe along the posterior margin, and gonostylus bearing 2–14 black chitinized spines (Alexander 1924, 1935, 1958)
Summary
Nipponomyia Alexander, 1924 is a small crane fly genus belonging to the Pediciidae (Diptera: Tipuloidea). Tergites and sternites each with longitudinal dark line on lateral side (Figs 8B, 10B, 14B, 15B, 18B) and/or with spots and transverse lines (non-Japanese species). The kuwanai species group is characterized by the presence of black transverse lines (dashes) in costal cell (Fig. 4B–E); ultimate palpomere at most 1.6–1.7 × longer than penultimate; ventro-basal lobe of gonocoxite small, not prominent (Figs 5G, H, 11G, H); aedeagus rounded in lateral view (Figs 5I, J, 11I, J).
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