Dolichopus lantsovi Negrobov, Grichanov et Barkalov, sp. nov.

• Main Authors: Negrobov, Oleg P., Grichanov, Igor Ya., Barkalov, Anatolii V.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2009
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Dolichopodidae; Dolichopus; Dolichopus lantsovi; Taimyr
• Online Access: https://doi.org/10.5281/zenodo.6225924; http://treatment.plazi.org/id/03C7344DFF84FFCD4AFCFEC2FA36F086

Dolichopus lantsovi Negrobov, Grichanov et Barkalov sp. nov. (Figs. 4–6) Type material. Holotype 3, Russia : Taimyr Peninsula, Ragozinka river bank, 16.VII.1990, V. Lantsov [ZIN]. Paratype: Russia : 13, Middle Yamal, Nurma-Yakha River, Malaise trap, 12–17.VII.1991 [ZIN]. Diagnosis. This species keys to D. brevifacies Stackelberg and D. acutangulus Negrobov (see key above). Legs with partly black femora; postpedicel with obtuse apex; clypeus not reaching lower eye margin; mid femur with 2 and hind femur with 1 anterior preapical setae; M1+2 with strong but gentle curvation; costa with short thickening at R1; lower calypter with yellow-white cilia. Description. Male : Body length: 4.3–4.6 mm, wing length: 4.3–4.6 mm, wing width: 1.6 mm, antenna length: 1.3 mm, hypopygium length: 1.9 mm. Head : Face with dark-brown ground color, weakly silvery-white, nearly reaching lower eye margin, in middle about 1.5 times as wide as postpedicel height. Proboscis dark-brown; palpus dirty yellow, with black setulae, whitish pollinose. Frons shining, metallic green-black. Antenna (Fig. 4) black; scape elongated, 2 times longer than high, with row of dense black dorso-lateral setae. Pedicel slightly longer than high, with a ring of small apical setae; postpedicel bud-like, with obtuse-angular apex, hardly longer than high; stylus bisegmented, short, about as long as scape, pedicel and postpedicel combined, shortly haired, simple, located at 2/3 of dorsal surface of postpedicel. Lower postocular setae white. Thorax : metallic green-black; pleura weakly grey pollinose; proepisternum with 1 strong black seta and small white hairs. Legs : mainly dirty yellow; all coxae black; trochanters brown; fore femur black-brown except distal 1/3; mid femur brownish at base ventrally; hind femur darkened on basal 1/3; hind tibia brown-black on distal 1/5; hind tarsus black; fore and mid tarsi black from tip of basitarsus. Coxae with white setulae; fore and mid coxae with black apical setae; hind coxa with 1 strong black seta at middle. Femora ...