Tetragoneura ruuhijarvii Polevoi & Jakovlev, 2011, sp. n.

• Main Authors: Polevoi, Alexei, Jakovlev, Jevgeni
• Format: Other/Unknown Material
• Language: unknown
• Published: 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Mycetophilidae; Tetragoneura; Tetragoneura ruuhijarvii; Chandler; Seta; karelia*
• Online Access: https://zenodo.org/record/6187678; https://doi.org/10.5281/zenodo.6187678

4. Tetragoneura ruuhijarvii sp. n. (Fig. 2: E, F; 3: C, D) Holotype: 3, FINLAND, Ta: Heinola, Taypale (alt. 100 m), 17.9.– 28.9.1990, (ZMH, Kaila & Ruskanen leg.). Paratypes: 1 3, FINLAND, Ta: Lammi, Evo, Lapinjärvi, 12.7.– 27.7.2004 (ZMH, J. Jakovlev leg.); 1 Ƥ, Ta: Lammi, Evo, Leipäsuonaho, 30.6.– 27.9.2005 (ZMH, J. Jakovlev leg.). Other material examined. FINLAND: 2 3, Ta: Lammi, Evo, Lapinjärvi, 28.8.– 04.10.2004, (FRIP, J. Jakovlev leg.); 2 3, Ta: Lammi, Evo, Leipäsuonaho, 28.8 – 04.10.2004 (METLA, J. Jakovlev leg.); 1 3, same place, 30.6.– 27.9.2005 (METLA, J. Jakovlev leg.); 1 3, Ab: Karjalohja, Karkali Strict Nature Reserve, 27.8.– 04.10.2004 (METLA, J. Jakovlev leg.). Etymology. Named in a honour of professor Rauno Ruuhijärvi to acknowledge his great contribution to the nature protection in Finland and Russian Karelia. Diagnostic characters. This species is related to Nearctic T.nitida Adams which has similar general type of male terminalia (see Chandler, 1980, Fig. 1, 2). Differs distinctly by the shape of submedian lobes of the gonocoxite and presence of curved seta at the base of the gonostylus. Description. Male (n= 3) Head shining dark-brown to black, covered with short pale hairs and with several long proclinate setae on vertex. Lateral ocellus separated from eye margin by distance of 2.3 times its own diameter. Palpus yellow. Clypeus dark-brown, clothed with short hairs. Antenna uniformly brown. Fifth flagellomere about as long as wide. Scape and pedicel with long black setae apically. Eyes densely covered with minute hairs. Thorax. Scutum shining dark-brown, clothed with evenly distributed pale hairs and with some longer black bristles. Scutellum and pleurae dark-brown, thinly grey dusted. Antepronotum and proepisternum haired and with bristles, the rest of the pleurae bare. Wing length 2.78–2.91 [mean value 2.87] mm. Wing hyaline, veins yellow, costa and radius brownish. C extending up to the middle of distance between R 5 and M 1. Sc short, ending free. R 4 developed, forming elongated ...