Triogma trisulcata (Schummel, 1829)

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

publication ID

https://dx.doi.org/10.3897/zookeys.1083.75624

publication LSID

lsid:zoobank.org:pub:D263A9C3-D2EB-4A2D-9D7F-ECAC41AFD710

persistent identifier

https://treatment.plazi.org/id/D1B2E355-66A6-5491-AC5B-46E84C0AD7F6

treatment provided by

ZooKeys by Pensoft

scientific name

Triogma trisulcata (Schummel, 1829)
status

 

Triogma trisulcata (Schummel, 1829)

Figs 39 View Figure 39 , 40 View Figure 40

Triogma pulla (Meigen, 1830)

Non-type material examined.

Russia • 1 ♂, 1 ♀; Leningrad Oblast, Luzhsky District, around Luga City; 58.74°N, 29.85°E; alt. 40 m; 5 Jun. 1954; A.A. Stackelberg leg.; CKLP. United Kingdom • 2 ♂; Birmingham, Sutton Park, Longmoor Valley; 52.5635°N, 1.8633° W; alt. 125 m; 30 Apr. 2019; P. Boardman leg.; CKLP.

Supplementary description.

Male terminalia. Directed caudally. Tergite 9 fused with gonocoxites at base (Fig. 39C View Figure 39 ). Tergite 9 lateral parts weakly produced, triangular (Fig. 39A, C View Figure 39 ); posterior margin bent back under tergite 9, forming W-shaped plate (Fig. 39A View Figure 39 ). Sternite 9 fully membranous (Fig. 39B View Figure 39 ). Gonocoxite large ~ 1.5-1.6 × longer than tergite 9, without evident ventral or apical lobe (Fig. 39B, C View Figure 39 ); inner surface hairy. Gonostylus simple, narrowing to end (Fig. 39A, C View Figure 39 ). Aedeagus complex 1.4 × longer than gonocoxite (Fig. 39C View Figure 39 ); ejaculatory apodeme medium size, not covered by paramere in lateral view (Fig. 39F View Figure 39 ); interbase weakly curve dorsally, with small notch at tip in lateral view (Fig. 39F View Figure 39 ); dorsal lobe between interbases, membranous, bubble-like; sperm ducts branching from elongation of sperm pump, branching area darker (Fig. 39E, F View Figure 39 ); aedeagus trifid, as wide as interbase at mid-length in lateral view, aedeagus directed ventrally, just tip turning back dorsally (Fig. 39F View Figure 39 ); medial branch shorter than lateral branches (Fig. 39D-F View Figure 39 ).

Female terminalia: Tergite 8, ~ 2 × wider than tergite 9 in lateral view (Fig. 40B View Figure 40 ); not divided medially, posterior part partly membranous with a few hairs (Fig. 40A View Figure 40 ). Tergite 9 rectangular in lateral view (Fig. 40B View Figure 40 ). Triangular of tergite 10 large, fused with tergite 10 (Fig. 40A View Figure 40 ). Cercus simple, with distinct rugged area at tip; formed by short pyramid teeth (Fig. 40A, B View Figure 40 ); ventral margin with small, rounded notch at 1/3 of length. Hypogynial valve long, blade-like, shorter than cercus; with transverse ditch at base, holding lateral lobes of male tergite 9 during copulation (Fig. 40B View Figure 40 ). Common spermathecal duct short; spermathecal ducts carrot-shaped, without clear pattern; suddenly narrow (Fig. 40C View Figure 40 ); three spermathecae large, irregularly spherical, with comparably long and curved duct (Fig. 40D View Figure 40 ).

Distribution.

Palearctic species, with a wide distribution range in Europe, except the southern parts. Previously reported from Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Great Britain, Hungary, Italy, Latvia, Lithuania, Netherlands, Norway, Poland, Romania, Russia (North and Central European Russia), Slovakia, Sweden, and Switzerland. It was reported from Eastern Palearctic, but so far only from East Siberia (Irkutsk Oblast), Russia ( Oosterbroek 2021).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Cylindrotomidae

Genus

Triogma