Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 73. (Budapest 1981)
Vojnits, A.: Data to the Eupithecia fauna of Asia (Lepidoptera, Geometridae)
The species constituting the group rather resemble one another as regards external morphology, nor are the differences in the genital structure conspicuous in every case. All of this contributed to many cases of identification problems. VIIDALEPP, Tartu, has very kindly sent me 7 paratypes (5 males and 2 females) of his Eupithecia tuvinica for revision. Every one of the specimens agreed, both externally and anatomically, with the species Eupithecia bohatschi STAUDINGER. This result was further corroborated by a comparison with two bohatschi exemplars, deriving from Chabarovsk, Ussuri, made kindly available by MR. J. FLETCHER, British Museum (Nat. Hist.). The slight differences in tinge ("tuvinica" is generally yellower) and size (there are many small specimens among the "tuvinica" exemplars) cannot be considered sufficient to distinguish it even from the nominate subspecies of bohatschi, the more so as specimens of bohatschi populations, studied on other occasions, have also varied to this extent. The male genitalia of bohatschi are characterized by a flat uncus, elongated valvae, a straight or hardly concave Saccus, a relatively small aedoeagus (slightly incrassate on one end) containing a minute spiniform and a small and irregularly shaped chitinous formations, as well as the very long lateral arms of sternite VIII (Fig. 14). The male genitalia of the paratypes of E. tuvinica VIIDALEPP agree in every detail; the figures given in VIIDALEPP'S (1976) paper are also conforming (with some smaller deviations) with this picture, of course, they do not represent anything but the genitalia of bohatschi. The female apparatus is also characteristic. The bursa copulatrix is pyriform, medially with two opposed chitinous fields, and the narrower posterior part another, anelliform, chitinous field pads the bursal wall; however, this ring is not of uniform width (Fig. 15). The female genitalia of the paratypes of E. tuvinica VIIDALEPP show the same details. In VIIDALEPP'S figure (1976), the bursa copulatrix is much too elongated, the chitinous spines too small and rather sparsely arranged. Examined material — In addition to the material published previously (VOJNITS 1976) : 1. Tuva, Ak-Dovurak, Barum, 3-6.8.1972, at light, leg. Ruben et Viidalepp, 5 çfçf, 1 9 > Tuva, Kozol, Kua-Hem, 7. 1972, at light, leg. Ruben and Viidalepp, 1 9 = an paratypes of E. tuvinica VPP. — 2. Chabarovsk, Ussuri railway, 20. 6. 1911, 20.7. 1970, leg. E. Borsow, 2 9 9. Slides : Nos. 11.105, 11.116, 11.117, 11.118, 11.119, 11.306, 11.307 (çfçf); 11.114, 11.115 (9 9)- 8 en- prep. A. Mészár and A. Vojnits.
