Liogma nodicornis (Osten Sacken, 1865)

Kolcsar, Levente-Peter, Paramonov, Nikolai, Imada, Yume, Kato, Daichi, Gamboa, Maribet, Shinoka, Dai, Kato, Makoto & Watanabe, Kozo, 2022, Notes on the taxonomic status and distribution of some Cylindrotomidae (Diptera, Tipuloidea), with emphasis on Japanese species, ZooKeys 1083, pp. 13-88 : 13

Liogma nodicornis (Osten Sacken, 1865)

Figs 26 , 27

Liogma flaveola Alexander, 1919.

Non-type material examined.

Canada • 1 ♀; Manitoba, Winnipeg, Birds Hill Park, cedar bog; 50.03°N, 96.91° W; alt. 250 m; 20 Jun. 2003; F. Brodo leg.; CKLP. • 1 ♂, 2 ♀; Ontario, Ottawa, Stony Swamp; 45.3°N, 75.83° W; alt. 115 m; 7 Jun. 2011; • 1 ♂; same locality; 30 May. 2011; F. Brodo leg.; CKLP. Usa • 1 ♂; New Hampshire, Twin mountains, vochtig loofbos; 44.218°N, 71.415° W; alt. 600 m; 20 Jun. 1982; P. Oosterbroek / I. Tangelder leg.; CKLP. • 1 ♂; • 1 ♂; Michigan, Delta Co., 11 Jun. 1860; R. and K. Dreisbach leg; " Green label under the geographical label: Liogma nodicornis (O.S.). NOTE genotype of Liogma ".

Supplementary description.

Male terminalia directed caudally. Tergite 9 fused with gonocoxite at base (Fig. 26C ); caudal margin of tergite 9 with prominent lateral lobe, finger-like in lateral view (Fig. 26C ), elongated, triangular in dorsal view (Fig. 26A ); posterior margin with additional small, triangular outgrowth (Fig. 26A ). Sternite 9 membranous (Fig. 26B ). Gonocoxite 1.3-1.5 × longer than tergite 9 (including lobe); ventral lobe relatively small, triangular both lateral and ventral views, covered by few setae (Fig. 26B, C ); inner surface of gonocoxite with hairs, proximal corner with hairless, paler area (Fig. 26A ). Gonostylus simple, tapering to distal end. Aedeagus complex very large, 1.8-1.9 × longer than gonocoxite, in lateral view (Fig. 26C ); ejaculator apodeme large, not covered by paramere in lateral view (Fig. 26F ); tip of interbase directed inward in dorsal view (Fig. 26D ), and ventrally in lateral view (Fig. 26F ); dorsal lobe between interbases small, membranous, hardly noticeable (Fig. 26F ); aedeagus long, trifid, median branch slightly shorter (Fig. 26D-F ); lateral branch prolonged ventrally/caudally (Fig. 26F ); tips of branch flattened; sperm ducts branching from elongated portion of sperm pump, branching area dark (Fig. 26F ).

Female terminalia: Tergite 8, ~ 1.7-1.8 × wider than tergite 9 in lateral view (Fig. 27B ), not divided medially (Fig. 27A ). Triangular sclerite ~ 1/4 of length of tergite 10; sclerite separated from tip of tergite 10; lateral lobe of tergite 10 medium sized, 2 × as long as wide, with few long hairs (Fig. 27B ). Cercus wide, with blunt notches on dorsal, close to tip and ~ 1/3 of mid-length on ventral margin. Hypogynial valve relative long, dorsal margin close to tip concave (Fig. 27B ). Common spermathecal duct recognisable; sperm ducts simple, narrow tubes, (Fig. 27C ); three round spermathecae with curved, suddenly tapering ducts (Fig. 27D ).

Distribution: Canada and USA from (Alberta to Newfoundland, south to South Dakota, South Carolina and Georgia) ( Oosterbroek 2021).

Figures

Figure 26. Male genital structures of Liogma nodicornis (Osten Sacken, 1865) A terminalia, dorsal view B terminalia, ventral view C terminalia, lateral view D aedeagus complex, dorsal view E aedeagus complex, ventral view F aedeagus complex, lateral view.

Figure 27. Female genital structures of Liogma nodicornis (Osten Sacken, 1865) A terminalia, dorsal view B terminalia, lateral view C sternite 8, hypogynial valve, and sperm ducts, inner dorsal view D spermathecae.