Timia (Empyelocera) altaica Galinskaya

Galinskaya, Tatiana V., 2014, Two new species of the genus Timia (Diptera: Ulidiidae) with a key to species with microtrichose black scutellum, Zootaxa 3753 (6), pp. 573-584 : 574-576

Timia (Empyelocera) altaica Galinskaya sp. nov.

( Fig. 2 c, 4)

Type material. Holotype 1♂, Russia: “Чуйская ст. / юго-вост. Алтай / Нарчук 21.VI.1964 ” [Chuya Steppe, South-Eastern Siberia, Altai Mountains, Russia, E. P. Nartshuk leg., 21 June 1964] ( ZISP). Paratypes, Russia: 3♂ “Чуйская ст. / юго-вост. Алтай / Нарчук 21.VI.1964 ” [Chuya Steppe, South-East Siberian Altai Mountains, Russia, E. P. Nartshuk leg., 21 May 1964]; 1♂, 1♀ “Кош-Агач, Алтай / Нарчук 21.VI.1964 ” [Kosh-Agach, Siberian Altai Mountains, Russia, E. P. Nartshuk leg., 21 June 1964] ( ZISP).

Diagnosis. The new species differs from T. (E.) nigrimana (Loew, 1866) and Timia (Empyelocera) mokhnata Galinskaya sp. nov. by posteroapical extension of cell bcu short, 0.8 times as long as transverse section of vein Cu2.

Description of the holotype. Male: Head. Frons from dark brown (dorsally) to pale brown (ventrally) with dents and bumps. Frons shining, with three microtrichose areas (a narrow spindle-like stripe at the middle of frons and two rather broad bands with rows of confluent shining spots along eye margins). Frons evenly covered with short and thin black setulae. Ocellar triangle shining black. Lateral parts of vertex with black marks. Median occipital sclerite black, brownish close to ocellar triangle, with silver-white microtrichosity close to vertex. Lateral occipital sclerite black, with silver-white microtrichosity close to eye margin. Postgena pale brown anteriorly, black posteriorly. Parafacialium pale brown, as wide as antennal groove, 1.4 times as wide as flagellomere 1. Gena pale brown, 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 1.3 times as high as wide. Lunule pale brown. Face yellow, with slightly darkened band along the lower edge; face with black vertical bands below antenna. Scape and pedicel black. Flagellomere 1 black, dark brown laterally, matted. Arista dark brown. Antennal groove black, with thin silver-white microtrichosity. Proboscis brown. Palp pale brown, on its apex dark brown.

Setae. 3 pairs of small orbital setae (anterior orbital seta not longer than the other ones), 1 pair of ocellar setae, 1 pair of postocellar setae, 1 pair of long medial vertical setae, 8 pairs of postocular setae, 1 pair of short paravertical setae and 1 pair of long lateral vertical setae. 3 pairs of genal setulae, 5 pairs of postgenal setulae, 1 pair of long genal setae.

Thorax. Black. Mesonotum silvery white microtrichose, with rows of confluent shining spots around setae. Postpronotum with silver-white microtrichosity. Scutellum black, flattened dorsally; dorsally silvery white microtrichose with short black setulae over its dorsal surface. Mediotergite black, silvery white microtrichose. Pleura black, with rare short black setulae.

Setae. 1 pair of postpronotal setae, 2 pairs of notopleural setae, 1 pair of supra-alar setae, 1 pair of dorsocentral setae, 1 pair of postalar setae, 1 pair of intra-alar setae; 2 pairs of scutellar setae; 1 pair of anepisternal setae, 1 pair of katepisternal setae; also anepisternum and katepisternum covered with short black setulae.

Legs. Dark brown, apical 2/3 of mid- and hindtibia and tarsus (except first tarsomere) pale brown.

Wings. Hyaline. Posteroapical extension of cell bcu short, 0.8 times as long as transverse section of vein Cu2. Halter pale yellow.

Abdomen. Black, evenly short and thin black setulose.

Male genitalia. Surstylus with mesoventrally curved and apically thickened anteroventral lobe and with short posteromedial lobe covered with strong setae on its ventral side. Cerci fused, elongated and obtuse apically, covered with rare thin long setulae.

Remarks. Variability was observed in size.

Body length 3.9–4.2 mm. Wing length 4.1–4.3 mm.

Female: similar to male.

Body length 5.2 mm. Wing length 4.2 mm.

Etymology. The new species is named after its area of distribution.

Distribution. Altai ( Russia).

Figures

FIGURE 2. Male genital structures (surstyles and cerci); a— Timia (Empyelocera) planiceps Hendel, 1910; b— Timia (Empyelocera) anomala (Becker, 1907); c— Timia (Empyelocera) altaica Galinskaya sp. nov.; d— Timia (Empyelocera) mokhnata Galinskaya sp. nov.; e— Timia (Empyelocera) nigrimana (Loew, 1866).