Timia (Empyelocera) canaliculata 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 : 8-11

Timia (Empyelocera) canaliculata Becker

( Figs 5–6 )

Timia canaliculata Becker, 1906: 117

Other citations. Hendel, 1908: 4; 1910: 14; Hennig, 1940: 26; Zaitzev, 1982: 443; Zaitzev, 1984 a: 63; Kameneva, 2000: 186.

Type material. Lectotype (here designated): China: 3, “ syntypus, Бугасъ у Хами, на ЮВ от Тянь-Шаня, РобКозлов, 25.VIII.1895 ” [syntypus, Bugaz near Hami, to the SE from Tien Shan, 25 Aug. 1895, Roborowsky and Kozlov leg.] ( ZISP). Type-locality: “Bugas bei Chami, südöstlich Tján-Schan” (North China); Paralectotypes: 3 3, 3 Ƥ, label as in lectotype ( ZISP).

Additional material. Mongolia: 3 3, Ƥ, “ Монголия, Баян-Хонгорский аймак, 30 км ССВ родн. Шара- Хулсны-Булак, Зайцев, 4.IX.1970 ” [Bayankhongor aimag, 30 km NNE spring Shara Hulsny-Bulak, 4 Sept. 1970, Zaitzev leg.] ( ZISP).

Diagnosis. This species is similar to T. (E.) orientalis in having cell r4+5 open, Section of costal vein between R4+5 and M shorter than vein R-M. Scape and pedicel entirely yellow or brown-yellow. Differs by flagellomere 1 and the apex of palpus black or dark brown; flagellomere 1 almost twice as long as wide (in T. (E.) orientalis , with flagellomere 1 and the apex of palpus yellow and the length of the flagellomere 1 almost the same as his width). Apices of veins R4+5 and M are almost contact (in T. (E.) orientalis , with the distance between apices of veins R4+5 and M 0.5–0.7 as long as vein R-M). Male fore femur at its underside with a series of short black spines ( T. (E.) orientalis with male fore femur with relatively long setulae).

Description of the lectotype. Male: Head. Frons yellow, concave, without microtrichosity, evenly covered with short and thin black setulae. Ocellar triangle shining black. Lateral parts of vertex entirely yellow without dark markings. Occiput yellow, slightly microtrichose, covered with short and thin black setulae. Median occipital sclerite yellow; lateral occipital sclerite yellow, with thin silver-white microtrichosity close to eye margin. Gena yellow, 0.4 times as high as eye. Postgena yellow. Parafacialium yellow, 0.5 times as wide as antennal grooves and as wide as flagellomere 1. Eyes 1.3 times as high as wide. Lunula yellow. Face yellow, with narrow darkened band along the lower edge. Clypeus pale brown, darkened along the lower edge. Scape and pedicel brown. Flagellomere 1 brown at the base, almost black at the apex, matted. Arista brown. Antennal grooves yellow, with thin silver-white microtrichosity. Proboscis brown. Palpus brown at the base, black at the apex. Setae. 4 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, 8 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. Katepisternum with brown spot in ventral portion. Setae. 1 pprn, 2 npl, 1 spal, 1 prsc dc, 1 pal, 1 ial setae, 2 pairs of sctl; anepm setae absent; 1 anepst, 1 kepst setae, also anepisternum and katepisternum covered with short black setulae.

Legs. Entirely yellow. Tarsus, mid- and hindcoxae darkened to pale brown.

Wings. Hyaline, with yellowish apex. Cell r4+5 narrowly opened. Apices of veins R4+5 and M are almost contact. Posteroapical extension of cell bcu 0.3 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, syntergite 1–2 and tergite 3 completely brown. Sternites yellow.

Male genitalia. Surstylus with anteroventral lobe curved proximally at a right angle, bears 2 spines at its inner margin; and with short posteromedial lobe covered with setulae on its ventral side. Cerci tapered at the top, separated by a narrow slit, 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 5.0– 6.5 mm. Wing length 3.5–4.5 mm.

Female: similar to male, except genital structures. Female terminalia: Aculeus five 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 basal setulae, 1 pair long and 3 pair short apical setulae. 3 spherical spermathecae with smoothed cellular surface and inverted necks; two left with T-shape bifurcated common duct.

Body length 5.0–7.0 mm. Wing length 3.5–4.5 mm.

Remarks. Variability was observed in number of setae among examined specimens: 4–5 small orb, 4–6 divergent pocl, 8–12 gn, 8–10 long pgn setae; microtrichosity on anepisternum sometimes almost indistinguishable.

Distribution. North China, Mongolia.

Figures

FIGURE 5. Timia (Empyelocera) canaliculata Becker, male; a— habitus, lateral view, b— head and thorax, dorsal view; chead, lateral view; d— head, anterior view; e— wing.

FIGURE 6. Timia (Empyelocera) canaliculata Becker, male and female genitalia; a— epandrium, posterior view, b— phallus; c— aculeus, compressed on slide; d— spermathecae.