(Figs. 1, 2, 11, 15)

Borkhausenia zonula Gerasimov, 1930: 74, fig. 8.

Material examined. Holotype ♂, [Uzbekistan] Ak-Tash [near Tashkent], 18–25.vii.[19]25 [collector unspecified] / Borkhausenia zonula n. sp., A. Gerasimov / Holotype ♂, Borkhausenia zonula Geras., teste K. Sattler, 1978 (ZIN); 1♀, Tashkent, karant. labor., 13.vii.[1]936, svetol. / Borkhausenia zonula Grsm., A. Gerasimov det. (gen. prep. 320/08) (ZIN); 3♂, Kazakhstan, Yu.-Kazakhstanskaya obl., 12 km N Kentau, 15.v.1994, M. Nesterov (ZMKU); 1♀, S Kazakhstan, Karatau khr., 10 km N Kentau, 600 m, na svet, 8.vi.1994, Pljushch, Nesterov (ZMKU); 1♂, 1♀, S. Kazakhstan, 30 km E Kentau, okr. Atchisaja, khr. Karatau, 12–13.v.1994, na svet, V. Zolotuhin (ZIN) (gen. prep. 32/ 10 ♀); 1♂, Uzbekistan, Tashkentskaya obl., pos. Tcharvak, 900 m, 27–29.iv.1996, Z. Kljuchko (ZMKU); 5♂, uroch. Zhamansai, Kyzylkum, Uzbek., 14, 18, 27.iv.1972, 2.vi.1975, Falkovitsh (gen. prep. 45/07) (ZIN).

Biology. Adults occur from mid-April to mid-July at elevations of 600 to 900 m.

Distribution. S Kazakhstan, Uzbekistan.

Remarks. B. zonula can be separated externally from B. pseudozonula by its darker forewing color. The male genitalia (Fig. 11) are characterised by a long valvella. The female genitalia (Fig. 15) resemble those of B. pseudozonula but differ in the shape of signum (for details see the diagnosis for B. pseudozonula).