Timia (Empyelocera) dimidiata Becker

Galinskaya, Tatiana V., 2011, Review of the yellow-bodied species of the genus Timia (Diptera: Ulidiidae) with description of two new species, Zootaxa 2888, pp. 1-22 : 11-14

Timia (Empyelocera) dimidiata Becker

( Figs 7–8 )

Timia dimidiata Becker, 1906: 115 .

Other citations. Hendel, 1908: 3; 1910: 14; Hennig, 1940: 26; Zaitzev, 1982: 444; Zaitzev, 1984 a: 63; Kameneva, 2000: 187.

Type material. Type-locality: “Kaschgar” (North China). I could not examine type material (it is deposited in Museum für Naturkunde, Berlin, Germany). I based the description on the Ƥ, “Муюн-кум, Ю-В Казах, 110 км NW Джамбула (Предпесковая зона, на верблюж. колючке), Сугоняев” [SE Kazakhstan, Muyunkum, 110 km NW Jambyl, Zone before sands, on the Alhagi (camel's thorn), 2 July 1963, Sugonyaev leg.], marked with green square (“Descr. specimen, 2011”).

Material examined. Iran: Ƥ, “Отъ Гурмука по З и СЗ Сенстану, (Эксп. в Персiю, 1898), Зарудный, 5– 20.IX.1898 ” [from Gurmuk to W and NW Sistan, (Expedition to Persia, 1898), 5–20 Sept. 1898, Zarudny leg.]; 2 3, Ƥ, “Сенетанг (Эксп. в Персiю, 1898), Зарудный, 13–17.V.1898 ” [Senetang, (Expedition to Persia, 1898), 13– 17 May 1898, Zarudny leg.] ( ZISP); Kazakhstan: 3, “Каракуль-Сары Тугай, СырД, Чимк, Гейеръ, 18.V.1898 ” [Karakul-Sarah Tugay, Syr Darya, South Kazakhstan Province, 18 May 1898, Heyer leg.]; 9 Ƥ, 3 3, “Муюн-кум, Ю-В Казах, 110 км NW Джамбула (Предпесковая зона, на верблюж. колючке), Сугоняев, 2.VII.1963 ” [SE Muyunkum, 110 km NW Jambyl, Zone before sands, on the Alhagi (camel's thorn), 2 July 1963, Sugonyaev leg.] ( ZISP); Tajikistan: 2 Ƥ, “окр. Ганджина, NW Курган-тюбе, Тадж., Кержнер, 12.V.1961 ” [neighborhood of Gandzhin, NW Qurghonteppa, 12 May 1961, I.M. Kerzhner leg.] ( ZISP); Turkmenistan: 3, “Карыкуль, 65 км. сев. Ашхабада, Пономарева, 19.IV.1963 ” [Karakul, 65 km. N. Ashgabat, 19 Apr 1963, Ponomareva leg.]; 3 3, “оз. Топьятан, 15 км ССВ Ясхана, Узбой, Туркмения, Верещагина, 18–19.V.1987 ” [lake Topyatan 15 km NNE Yaskhan, Uzboy, 18–19 May 1987, Vereshchagina leg.]; 3, “12 км ЮВ Теджена, Туркм., Пономарева, 24.V.1964 ” [12 km SE Tejen, 24 May 1964, Ponomareva leg.]; 2 Ƥ, “20 км N Кизыл-Арват, Туркмен., Штейнберг, 3.VI.1952 ” [20 km N KizilArvat, 3 June 1952, Shteinberg leg.]; 3, “Мерв. ю. Туркм., В.Попов, 15.VI.1930 ” [Merv, 15 June 1930, V. Popov leg.]; Ƥ, “ст. Ахча-Куйма, Туркм., В.Попов, 5.VII.1934 ” [station Akhcha-Kuyma, 5 July 1934, V. Popov leg.]; 2 Ƥ, “Карадегиш, дол. р. Атрека, Туркмения, Ушинский, 21.VIII.1932 ” [Karadegish, valley of. Atrek river, 21 Aug. 1932, Ushinsky leg.]; “АрманСаадъ-КизилАрват Закасп., Ангеръ, 1896” [ArmanSaad-KizilArvat, Transcaspian region, 1896, Anger leg.] ( ZISP); Uzbekistan: Ƥ, Buchara, Mer. occ., Yargak, pr. Chatyrtshy, 20 June 1928, L. Zimin leg.; 5 3, 2 Ƥ, “Камак, Катта-Кург. у. Самарк., Л.Зимин, 29.VI.1929 ” [Kamak, Kattakurgan, near Samarkand, 29 June 1929, L. Zimin leg.]; 3, the same place, 10 July 1929, L. Zimin leg.; 4 3, 4 Ƥ, the same place, 1 Aug. 1932, L. Zimin leg. ( ZISP); Armenia: Ƥ, “ Армения, Араздаян, Зимина, 8.VI.1956 ” [Arazdayan, 8 June 1956, Zimina leg.] ( ZMUM).

Diagnosis. This species clearly differs from all yellow-bodied species in the subgenus Empyelocera by cell r4+5 widely open, section of costal vein between R4+5 and M apices longer than R-M crossvein. Scape and pedicel are entirely black, contrasting with yellow flagellomere 1.

Description. Female: Head. Frons yellow, above lunula with pair of long light-brown stripes. Frons evenly covered with short and thin black setulae. Frons with weak microtrichosity close to eye margin. Ocellar triangle shining black. Lateral parts of vertex entirely yellow without dark markings. Occiput yellow, slightly microtrichose, short and thin black setulose, with brown spot around the occipital foramen. Median occipital sclerite yellow, with silver-white microtrichosity close to vertex; lateral occipital sclerites yellow, with silver-white microtrichosity close to eye margin. Gena yellow, 0.3 times as high as eye. Postgena yellow. Parafacialium yellow, 0.75 as wide as antennal grooves, as wide as flagellomere 1. Eye 1.4 times as high as wide. Lunula yellow. Face yellow, without darkened band along the lower edge. Clypeus yellow. Scape and pedicel brown to black. Flagellomere 1 yellow. Arista brown. Antennal grooves yellow, with thin silver-white microtrichosity. Proboscis brown. Palpus yellow. Setae. 5 small orb (first orbital seta a little longer than the other ones), 1 divergent oc, 1 divergent poc, 1 long divergent m vt, 4 divergent pocl, 1 short pa vt and 1 long convergent i vt. 8 gn, 4 pgn setulae, 1 long gn seta. 2 groups of spc setae over occipital foramen.

Thorax. Yellow, with brown lateral spots (mainly on presutural area of scutum) and median strips. Mesonotum with silver-white microtrichose lateral spots and median strips. Postpronotum with silver-white microtrichosity. Scutellum subshining yellow, faintly sculptured, with short black setulae over its upper surface. Mediotergite yellow, with brown spot at middle. Pleura yellow, with slight microtrichosity on the upper edge of anepisternum and on the border of anepisternum and anepimeron. Katepisternum with brown spot in ventral portion. Setae. 1 pprn, 2 npl, 1 spal, 1 prsc dc, 1 pal, 1 ial seta; 2 pairs of sctl; anepm setae absent; 3 anepst, 1 kepst seta, also anepisternum and katepisternum covered with short black setulae.

Legs. Entirely yellow. Tarsus (except first tarsomere) darkened to pale brown.

Wings. Hyaline, with yellowish apex. Cell r4+5 widely opened, the distance between apices of veins R4+5 and M is always bigger than the length of vein R-M. Posteroapical extension of cell bcu 0.5 times as long as width of the cell at its middle. Halter yellow.

Abdomen evenly short and thin black setulose. All tergites laterally yellow, brown at middle. Sternites 1, 2 brown, other sternites yellow.

Female terminalia: aculeus seven times as long as wide at its middle, with two rows of short setae at each side. Cercal unit elongate oval, with 1 pair of long and 1 pair short basal setulae, 1 pair long and 1 pair short apical setulae. 3 spherical spermathecae with smoothed cellular surface and inverted necks; two left with T-shape bifurcated common duct.

Body length 4.0– 5.5 mm. Wing length 2.5–3.5 mm.

Male: similar to female, except genital structures. Male genitalia. Surstylus with mesoventrally curved anteroventral lobe and with short posteromedial lobe covered with setulae on its ventral side. Cerci separated, each with obtuse angulate apex, covered with long setulae. Phallus with one short serrate basal caecum and one wide bare apical caecum. Glans with 3 short hooks and one membranous lobe.

Body length 3.5–4.5 mm. Wing length 3.5–4.0 mm.

Remarks. Variability was observed in coloration of frons among examined specimens: frons yellow, above lunula with pair of long light-brown stripes sometimes they could be short; number of setae: 5–7 small orb, 4–6 divergent pocl, 7–8 gn, 4–6 long pgn setae; microtrichosity on anepisternum sometimes almost indistinguishable. Distribution. Armenia, Turkmenistan, Iran, Kazakhstan, Uzbekistan, Tajikistan, Kyrgyzstan, North China.

Figures

FIGURE 7. Timia (Empyelocera) dimidiata Becker, female; a— habitus, lateral view, b— head and thorax, dorsal view; chead, lateral view; d— head, anterior view; e— wing.

FIGURE 8. Timia (Empyelocera) dimidiata Becker, male and female genitalia; a— epandrium, posterior view, b— phallus; caculeus, compressed on slide; d— spermathecae.