Морфология и морфометрия тибиального органа самцов Dolichopus Latreille, 1796 (Dolichopodidae, Diptera)

Изучены морфологические и морфометрические признаки видового уровня тибиального органа самцов рода Dolichopus Latreille, 1796. На основании изученных признаков была изучена межвидовая изменчивость и выделены группы надвидового уровня

The genus Thinophilus Wahlberg, 1844 (Diptera, Dolichopodidae) from Eastern Palaearctic, with description of two new species and new records

Two new species of the genus Thinophilus Wahlberg, 1844 are described: Thinophilus (Schoenophilus) grootaerti, sp. n. from the Maritime Territory and Thinophilus ovtshinnikovae, sp. n. from China. Subgenus Schoenophilus Mik, 1878 are recorded for the first time from Asia. Lectotypes and paralectotypes for Thinophilus pollinosus Loew, 1871 and Thinophilus seticoxis Becker, 1922 are designated. Thinophilus pollinosus Loew, 1871 are recorded for the first time from Russia. New data on the fauna of the genus Thinophilus of Russia and Mongolia are given. A new key to species of the genus Thinophilus from Eastern Palearctic region including 12 species is also presented

Fauna of the family Dolichopodidae (Diptera) of the Astrakhan State Nature Biosphere Reserve (Russia)

The paper presents a critical review of the Dolichopodidae family in the Astrakhan State Nature Biosphere Reserve (Russia). In total, 23 species from the Dolichopodidae family were indicated for this Protected Area. Four of these species have been recorded for the first time for both Europe and Russia: Asyndetus albipalpus, Asyndetus chaetifemoratus, Chrysotus dorli, Hercostomus rubroviridissimus. In addition, Dolichopus jaxarticus and Sciapus subvicinus are new species for Russia. Twenty species (Asyndetus albipalpus, Asyndetus chaetifemoratus, Asyndetus latifrons, Campsicnemus filipes, Campsicnemus simplicissimus, Chrysotus cilipes, Chrysotus dorli, Dolichopus calinotus, Dolichopus cilifemoratus, Dolichopus latilimbatus, Dolichopus jaxarticus, Hercostomus convergens, Hercostomus rubroviridissimus, Medetera diadema, Medetera plumbella, Nematoproctus longifilus, Poecilobothrus bigoti, Rhaphium penicillatum, Sciapus longulus, Sciapus subvicinus) are firstly recorded for the Astrakhan region. To date, 34 Dolichopodidae species are known in the Astrakhan region. However, further studies of the Dolichopodidae fauna in Protected Areas are needed for a more comprehensive knowledge on this Diptera family in Russia and in Eurasia as a whole

АНАТОМИЯ НЕРВНОЙ СИСТЕМЫ СЕМЕЙСТВА DOLICHOPODIDAE (DIPTERA)

Описано строение грудной и брюшной нервной системы представителей родов Argyra, Dolichopus и Hercostomus семейства Dolichopodidae

Chrysotus tricaudatus Negrobov, Barkalov & Selivanova, sp. nov.

Chrysotus tricaudatus Negrobov, Barkalov & Selivanova, sp. nov. (Figs 1 A–C) Type material. HOLOTYPE, ♂ labeled: Russia: Taimyr Reserve, Ary-Mas field station, left bank of river Novaya, 14 m a.s.l., inundated terrace, 72.5 ˚N, 101.94 ˚E, 10–12.VII. 2010, coll. A. Barkalov (SZM). PARATYPES: Russia: 9 ♂, same data as holotype, coll. A. Barkalov; 1 ♂, Krasnoyarskij Kraj, Taimyr Peninsular left bank of river Zakharova Rassokha 72.7 ˚N, 101.05 ˚E, 11–20.VII. 2011, coll. A. Barkalov (SZM and VSU). Diagnosis. Face narrow; postpedicel small; lower postocular setae white; fore coxa with white hairs; femora green-brown; mid tibia with 2 anterodorsal and 2 posterodorsal setae; hind femur and tibia without long setae and hairs; phallus with two lateral processes on tip. Description. Male: Body length: 2.0– 2.2 mm, wing length: 1.9–2.3 mm. Head: Frons green with purple tinge, without pollinosity. Eyes not contiguus. Face green, with brown pollinosity, narrow, lower part several times narrower than postpedicel. Antenna (Fig. 1 B) black, postpedicel small, transversely oval with rounded tip, nearly 2 x wider than long; arista apical, with short hairs. Ratio of postpedicel length to width and arista length: 0.7 /1.0/ 3.1. Proboscis brown. Palpus brown with black hairs without silver pollinosity. Lower postocular setae white. Thorax: Metallic green, scutum with bronze tinge and fine grey pollinosity. Pleura with pollinosity denser than scutum, proepisternum with light setae. Six pairs of strong dorsocentral setae. Acrostichal setae long, arranged in two rows. Scutellum with 2 long and 2 short lateral setae. Legs: Fore coxa with white hairs, mid and hind coxae with dark hairs; fore trochanters yellowish-brown. Femora mostly greenish-brown, except narrowly yellow tips. Fore femur with long white anteroventral hairs, length approximately equal to femur width. Fore tibia and tarsus with short hairs. Ratio of fore tibia and tarsus (from 1 st to 5 th): 2.5 / 1.1 / 0.5 / 0.2 / 0.2 / 0.3. Mid and hind femora with short anteroventral hairs. Mid tibia with 2 anterodorsal and 2 posterodorsal seta. Ratio of mid tibia and tarsus (from 1 st to 5 th) 3.1 / 1.6 / 0.8 / 0.5 / 0.3 / 0.4. Hind tibia with 2 short dorsal setae and short erect anteroventral hairs. Ratio of hind tibia and tarsus: 3.3 / 1.2 / 0.8 / 0.4 / 0.3 / 0.4. Wing: Membrane hyaline with dark veins; R 4 + 5 and M 1 parallel at apex. Ratio of costal section between R 4 + 5 and M 1 to that between R 2 + 3 and R 4 + 5: 1.5 / 0.6; m-cu distinctly shorter apical part of M 3 + 4 (0.4 / 2.4). Halter and cilia on lower calypter yellow. Abdomen: Metallic green, grey pollinose laterally, covered with black hairs. Epandrium oval; surstylus in apical half bent in the shape as in Figure 1 A. Phallus with apex in the form of a trident, with pair of dorsolateral processes (Fig. 1 C). Cercus with light brown hairs. Female: Unknown. Etymology. The species is named for the shape of phallus. Taxonomy. In the key to Palearctic species of Chrysotus (Negrobov et al. 2000), the new species runs to Chrysotus albibarbus Loew, 1857 and can be distinguished from the latter by following characters: 1. Hind tibia and base of hind tarsus dark; vein dm-cu at most 4 x shorter than apical part of vein M 3 + 4. Palpus covered with white hairs. Surstylus not broadened on tip (Figs. 1 H, J). Phallus without processes. (Fig. 1 I)........ Chrysotus albibarbus Loew -. Hind tibia and base of hind tarsus yellow; vein dm-cu about 6 x shorter than apical part of vein M 3 + 4. Palpus with black hairs. Apical half of surstylus broadened (Fig. 1 A). Phallus is tridental in form, with a pair of dorsolateral processes (Fig. 1 C)............................................................................... Chrysotus tricaudatus sp. nov.Published as part of Barkalov, Oleg P. Negrobov Anatolij V. & Selivanova, Olga V., 2014, Two new species of Chrysotus Meigen (Diptera, Dolichopodidae) from Siberia, with a key to the Siberian species, pp. 409-416 in Zootaxa 3815 (3) on page 410, DOI: 10.11646/zootaxa.3815.3.6, http://zenodo.org/record/23025

Chrysotus fuscoluteus Negrobov 1986

Chrysotus fuscoluteus Negrobov, 1986 Material studied. 14 ♂ Russia: Krasnoyarskij Kraj, Taimyr Reserve, Ary-Mas field station, left bank of river Novaya, 14 m a.s.l., inundated terrace, 72.5 ˚N, 101.94 ˚E, 10–12.VII. 2010, coll. A. Barkalov (SZM and VSU). Remarks. This species is newly recorded from the Taimyr Peninsula. Prior to this study, C. fuscoluteus was only known from the type material collected in Yakurtia.Published as part of Barkalov, Oleg P. Negrobov Anatolij V. & Selivanova, Olga V., 2014, Two new species of Chrysotus Meigen (Diptera, Dolichopodidae) from Siberia, with a key to the Siberian species, pp. 409-416 in Zootaxa 3815 (3) on page 414, DOI: 10.11646/zootaxa.3815.3.6, http://zenodo.org/record/23025

Two new species of Chrysotus Meigen (Diptera, Dolichopodidae) from Siberia, with a key to the Siberian species

Barkalov, Oleg P. Negrobov Anatolij V., Selivanova, Olga V. (2014): Two new species of Chrysotus Meigen (Diptera, Dolichopodidae) from Siberia, with a key to the Siberian species. Zootaxa 3815 (3): 409-416, DOI: 10.11646/zootaxa.3815.3.

Chrysotus komovi Negrobov, Barkalov & Selivanova, sp. nov.

Chrysotus komovi Negrobov, Barkalov & Selivanova, sp. nov. (Figs 1 D–G) Type material. HOLOTYPE, ♂ labeled: Russia: Krasnoyarskij Kraj, Taimyr Reserve, Ary-Mas field station, left bank of river Novaya, 14 m a.s.l., inundated terrace, 72.5 ˚N, 101.94 ˚E, 10–12.VII. 2010, coll. A. Barkalov (SZM). PARATYPES: Russia: 16 ♂, same data as holotype, coll. A. Barkalov. 14 ♂, Krasnoyarskij Kraj, Taimyr Peninsular left bank of river Zakharova Rassokha 72.7 ˚N, 101.05 ˚E, 11–20.VII. 2011, coll. A. Barkalov (SZM and VSU). Diagnosis. Face narrow; postpedicel large, transversely oval; palpus brown. Lower postocular setae white; fore and hind trochanters and all femora dark; fore coxa with black hairs; mid tibia with 2 anterodorsal and 2 posterodorsal setae; hind femur and tibia without long setae and hairs; phallus without long processes. Description. Male: Body length: 2.0– 2.1 mm, wing length 1.9 –2.0 mm. Head: Frons shiny green with purple tinge, without dusting. Eyes not contiguous. Face narrow green; under antennae with brown dusting, width in lower part in 5–6 times narrower than width of postpedicel. Antenna black; postpedicel large, transverse-oval, with a rounded tip (Fig. 1 E); arista apical, with short hairs. Ratio of postpedicel length to its width to arista length, 0.5 / 0.9 / 2.5. Proboscis brown. Palpus brown without silver dusting, with black hairs. Lower postocular setae white. Thorax: Dark-green; mesonotum with bluish reflection, covered with fine grey-brown dusting, 6 pairs of strong dorsocentral setae, acrostichal setae in two rows, long. Scutellum hind margin with 2 long and 2 short setae. Pleura with dense grey dusting; proepisternum with light setae. Legs: fore coxa dark-green with black hairs, mid and hind coxae with dark setae. Femora mostly greenish-brown, except narrowly light tips; fore femur with some short anteroventral setae near tip, length of which no longer femur width. Mid and hind femora with short anteroventral hairs. Fore and mid tibiae and tarsi yellow, apical segments of tarsi brown. Fore tibia with 1 anterodorsal seta in basal half. Ratio of fore tibia to tarsomeres (from first to fifth): 2.5 / 1.1 / 0.6 / 0.5 / 0.3 / 0.4. Mid tibia without long dorsal hairs, with 2 anterodorsal and 2 posterodorsal setae, basal half of hind tibia brownish-yellow. Hind tarsus black; ratio of hind tibia to tarsomeres (from first to fifth): 3.8 / 1.1 / 0.7 / 0.4 / 0.3 / 0.4. Wings: Hyaline, with dark venae. R 4 + 5 and M 1 parallel near wing top. Ratio of costal section between R 2 + 3 and R 4 + 5 to that between R 4 + 5 and M 1 1.5 / 0.5; m-cu distinctly shorter apical part of M 3 + 4 (0.6 / 2.4). Halter and cilia of lower calypter yellow. Abdomen: Dark-green with metallic shiny, grey dusted on sides, covered with black hairs. Epandrium oval; surstylus curved in apical half, in the shape as in Figure 1 D. Phallus prolonged with short apical process (Figs 1 F, G). Cerci brown, with light hair. Female: Unknown. Etymology. The species is named for Russian zoologist Ph. Dr. Victor T. Komov. Taxonomy. In the key to Palearctic species of Chrysotus (Negrobov et al. 2000), the new species runs to Chrysotus obscuripes Zetterstedt and can be distinguished from the latter by following characters: 1. Phallus with long lateral processes (Figs 1 L, M), surstylus narrowed apically (Figs 1 K, N), deeply notched ventrally...................................................................................... Chrysotus obscuripes Zetterstedt - Phallus without long lateral processes, surstylus approximately equal width from base to tip (Fig. 1 D).................................................................................................... Chrysotus komovi sp. nov.Published as part of Barkalov, Oleg P. Negrobov Anatolij V. & Selivanova, Olga V., 2014, Two new species of Chrysotus Meigen (Diptera, Dolichopodidae) from Siberia, with a key to the Siberian species, pp. 409-416 in Zootaxa 3815 (3) on pages 411-414, DOI: 10.11646/zootaxa.3815.3.6, http://zenodo.org/record/23025