With bare eyes, a single row of anterior genal setae, partly pale tarsi, dark fringed calypteres, bare scutellar disc and a single stigmatical setae this species belongs to the L. mallochi species group within the genus Lonchaea. This group contains some nine European species many of which can only be definitely identified from examination of the male genitalia. Within that group the presence of more than one yellow tarsomere and, in the genitalia, with the surstylus projecting beyond the shell of the epandrium and having an obvious recurved posterio-ventral projection this species shows greatest similarity with L. helvetica MacGowan 2001. It can however be easily distinguished from that species by the structure of the phallus which in L. helvetica is two segmented with the apical segment long and sinuous whilst in L. vikhrevi it is not segmented.
Description: Male: Head: Eyes bare. Frons matt black, half the width of an eye narrowing only slightly from the level of the ocelli to the antennal bases, bearing long frontal and interfrontal setulae many of which are more than 50% the length of the orbital setae. Orbital plate shining black, bare apart from the orbital setae. Lunule black with numerous setulae. Face and parafacials subshining, lightly grey dusted. Anterior genal setulae all relatively short, the anterior three forming a single row along the mouth edge. Antennal postpedicellus long, approximately 2.75 times as long as it is deep, entirely black apart from a rather obscure orange area at the base on the inner surface. Arista bare.
Thorax: Thoracic dorsum and pleurae shining black, dorsum covered with setulae which are half as long as the orbital setae. Anepisternum with three strong anterior and posterior setae. Katepisternum with one strong setae situated near the dorsal margin, no setulae situated posterior to it. One propleural and one stigmatical setae. Scutellum shining black, bare apart from on margin between the lateral and apical setae with four setulae on one side and two on the other (some may be missing here due to damage) five setulae between the apical setae. Calypteres brownish with dark fringes. Wings clear with yellow veins, intercostal space three times the length of crossvein rm. Wing length 3.5mm. Legs black, all metatarsi and second tarsomeres clear yellow, other tarsomeres becoming darker apically.
Male genitalia; Figs. 1-3; in lateral view epandrium almost square bearing setulae along the posterior and ventral margins. Cerci large, diamond shaped, height almost equal to that of the epandrium, bearing a row of long setulae along the ventral margin, other shorter setulae present at apex and dorsally. Surstyli projecting ventrally from the shell of the epandrium as a large semicircular process, this extended posteroventrally towards the base of the cerci as a long, slightly curved, spine In ventral view surstyli with numerous dense black spinules on inner surface. Phallus a rather simple U-shape although somewhat angular on the apical half.