Timia (Timia) zaitzevi Galinskaya

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 : 6-7

Timia (Timia) zaitzevi Galinskaya sp. nov.

( Figs 3–4 )

Type material. Holotype 3: Kazakhstan: “Ю.-З. Кызыл-Кумы, Ю. Казахст. обл., Лер, 20.V.1960 ” [SW Kyzyl Kum, 20 May 1960, Lehr leg.] ( ZISP). Paratypes: 12 3, 3 Ƥ, label as in holotype, 20 May 1960, Lehr leg. ( ZISP).

Diagnosis. The new species is similar to T. testacea in having parafacialium twice as wide as antennal groove and three times as wide as flagellomere 1, differing by short postero-dorsal extension of cell bcu (as long as or shorter than width of the cell bcu), and by the mesonotum silvery white microtrichose, with rows of confluent shining spots around setae. Cercal unit of the aculeus with two pairs of long setae (in T. testacea , the cercal unit has one pair of long setae). Surstylus with a gently sloping posteromedial lobe (in T. testacea , with a big rounded posteromedial lobe).

Description of the holotype. Male: Head. Frons pale yellow, with dents and bumps; with pair of short lightbrown stripes above lunule. Frons evenly covered with short and thin black setulae. Ocellar triangle shining black. Lateral parts of vertex entirely yellow without black marks. Occiput yellow, covered with short and thin black setulae. Median occipital sclerite pale yellow, with silver-white microtrichosity close to vertex; lateral occipital sclerite pale yellow, with silver-white microtrichosity close to eye margin. Postgena pale yellow. Parafacialium wide, twice as wide as antennal groove, three times as wide as flagellomere 1. Gena yellow, slightly darkened along the lower edge and with a series of short black setulae, without large spines. Gena 0.4 times as high as eye. Eye 1.5 times as high as wide. Lunula pale yellow. Face pale yellow, without darkened band along the lower edge. Scape and pedicel orange-yellow. Flagellomere 1 orange, pale brown apically, matted. Arista pale brown. Antennal grooves yellow, with thin silver-white microtrichosity. Proboscis brown. Palpus yellow, on their apices darkened to pale brown. Setae. 5 small orb (first orbital seta not longer than the other ones), 1 divergent oc, 1 divergent poc, 1 long divergent m vt, 10 divergent pocl, 1 short pa vt and 1 long convergent i vt seta. 4 gn, 5 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 silvery white microtrichose, with rows of confluent shining spots around setae. 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. Anepisternum with sparse microtrichosity at its upper edge and at 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; 1 anepst, 1 kepst seta, also anepisternum and katepisternum covered with short black setulae.

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

Wings. Hyaline, with yellowish apex. Section of costal vein between R4+5 and M apices at wing apex wider than R-M crossvein. Posteroapical extension of cell bcu at most 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 and microtrichose at their posterior margin. Sternites yellow.

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 4 short hooks and one membranous lobe.

Body length 3.3–3.7 mm. Wing length 2.7–3.5 mm.

Female: similar to male, except genital structures. Female terminalia: Oviscape yellow. Aculeus six 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 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 4.5–5.0 mm. Wing length 3.3–3.7 mm.

Remarks. Variability was observed in coloration of frons among examined specimens: above lunula with pair of short light-brown stripes, sometimes with a reddish tinge; number of setae: 5–6 small orb, 8–10 divergent pocl, 4–6 gn, 4–5 long pgn setae; microtrichosity on anepisternum sometimes almost indistinguishable; tarsus sometimes entirely yellow.

Etymology. Named in honor of V.F. Zaitzev.

Distribution. Kazakhstan.

Figures

FIGURE 3. Timia zaitzevi Galinskaya sp. nov., male; a— habitus, lateral view, b— head and thorax, dorsal view; c— head, lateral view; d— head, anterior view; e— wing.

FIGURE 4. Timia zaitzevi Galinskaya sp. nov., male and female genitalia; a— epandrium, posterior view, b— phallus; caculeus, compressed on slide; d— spermatheca.