Male genitalia of the species of Depressaria Haworth s.l. (Lepidoptera, Oecophoridae) occurring in The Netherlands

In a previous paper (Van Laar, 1961) the female genitalia of the species of Depressaria Hw. s.l. occurring in the Netherlands have been dealt with. In the present paper the male genitalia of these species will be treated. Although Hannemann (1953, 1954, 1958) already described the male genitalia of the species of Depressaria occurring in Europe, it was thought to be worth while to give here a survey of the male genitalia of the Dutch species, supplementing that of the female genitalia, in order to help students to discriminate between these rather uniform species. In view of the complexity of these structures the most efficient way seemed to present elaborate illustrations and abbreviate the descriptions. In the present work the classification used in the first paper is followed, viz., the division of Depressaria s.l. into a number of groups of generic status, of which Depressaria Haworth s.s., Agonopterix Hübner, and Levipalpus Hannemann are represented in the Netherlands. A sketch of the male genitalia in ventral aspect is given in fig. 1. The valvae are bent backward. More exactly, the right side of the drawing gives an impression of the situation as is generally found in Depressaria, the left side as is found in Agonopterix. For the structures of the genitalia the terminology of Pierce (1909) is used. Of certain species studied only limited material was available which made it difficult to get an insight of the variability of the genital characters within the species. Of certain species no male material from Dutch localities could be obtained; the genitalia of these species are described and figured after material from abroad. As to the wing venation, Agonopterix and Levipalpus show the same