Timia

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 : 2-3

Key to the yellow-bodied species of the genus Timia

1. Parafacialium very wide, as long as, or longer than flagellomere 1 and wider or at least as wide as antennal groove...........................................................................................subgenus Timia s. str...2

- Parafacialium never as wide as flagellomere 1, always narrower than antennal groove..... subgenus Empyelocera Loew …3

2. Posteroapical extension of cell bcu long, about 1.5–2 times as long as maximum width of cell. Mesonotum shining, without microtrichose areas. Female: cercal unit of aculeus with 1 pair of long basal setae. Male: cerci separated and rounded on top................................................................................ T. (T.) testacea Portschinsky

- Posteroapical extension of cell bcu short, at most as long as cell width at its middle. Mesonotum silvery white microtrichose, with rows of confluent shining spots around setae. Female: cercal unit of aculeus with 2 pairs of long setae. Male: cerci separated, each with obtuse angulate apex........................................... T. (T.) zaitzevi Galinskaya sp. nov.

3. Cell r4+5 open. Parafacialium area wide, almost as wide as flagellomere 1.......................................... 4

- Cell r4+5 completely closed, forming petiole at wing tip. Frons completely yellow, except black ocellar triangle. Parafacialium narrow, almost 0.3 times as wide as flagellomere 1. Flagellomere 1 entirely black.................. T. (E.) gobica Zaitzev

4. Cell r4+5 widely open, distance between apices of veins R4+5 and M longer than vein R-M. Scape and pedicel entirely black, contrasting with yellow flagellomere 1..................................................... T. (E.) dimidiata Becker

- Cell r4+5 narrowly open, but the distance between apices of veins R4+5 and M shorter than vein R-M. Scape and pedicel entirely yellow (or brown-yellow, in this case flagellomere 1 black).................................................... 5

5. Flagellomere 1 and apex of palpus yellow. Flagellomere almost as long as wide. Distance between apices of veins R4+5 and M 0.5–0.7 as long as vein R-M. Male fore femur with moderately long and thin setae.................................. 6

- Flagellomere 1 and palpus apex black or dark brown. Flagellomere 1 almost twice as long as wide. Frons yellow, with black ocellar triangle. Cell r4+5 opened narrower: apices of veins R4+5 and M are almost contact. Male fore femur with posteroventral series of short black spines......................................................... T. (E.) canaliculata Becker

6. Microtrichose areas on mesonotum forming a median vitta and various forms of spots at its sides...................... 7

- Mesonotum entirely silvery white microtrichose, without rows of confluent shining spots around setae........................................................................................... T. (E.) flaveola Galinskaya sp. nov.

7. Mesonotum at each side silver microtrichosity forming broad bands in the direction of the posterior part, and this band extends over wings. Parafacialium wider (0.3 times as wide, as eye), than that of T. (E.) orientalis . Posteroapical extension of cell bcu shorter (0.75 times as long, as width of the cell in its middle) than that of T. (E.) orientalis . Face wider (1.85 times as wide as its height) than that of T. (E.) orientalis ................................................... T. (E.) berlandi Séguy

- On each side of the mesonotum silver microtrichity forming broad bands in the direction of the posterior part, and this band not extends over wings. Parafacialium narrower (0.2 times as wide, as eye), than that of T. (E.) berlandi . Posteroapical extension of cell bcu longer (1.7 times as long, as width of the cell in its middle) than that of T. (E.) berlandi . Face narrower (as wide as its height) than that of T. (E.) berlandi .................................................... T. (E.) orientalis Zaitzev