| Author||W. van Laar|
|Title||Female genitalia of the species of Depressaria Hw. s.l. (Lepidoptera, Oecophoridae) occuring in the Netherlands|
|Abstract||It is generally understood that characters of the genitalia are indispensable for the natural classification of most groups of the Lepidoptera. The genital structures are of great value, especially in cases where difficulties may arise in distinguishing groups on external characters, like venation, colour, etc.|
Following this tendency, in the present work the female genitalia of the species of Depressaria Hw. s.l. occurring in the Netherlands are figured and described. Moreover, an attempt to improve the possibilities for identification may be useful, as some species have economic significance.
The male genitalia of the European species of this group have been described and figured by Hannemann (1953, 1954, 1958), who divided it into several groups of generic status, based on the peculiarities of the male genital structures. Only the genera Agonopterix Hb., Depressaria Hw., and Levipalpus Hann. are represented in the Netherlands. Although the characters of the female genitalia are not as characteristic as those of the males, they are not without value for classification. The differences in their structures support to a certain extent the arrangement of the Dutch species of Depressaria Hw. s.l. into the three above-mentioned genera. Where on the following pages of the present paper the name Depressaria is mentioned it is used in the restricted sense.
A short description of the general appearance of the female genital apparatus may be given (fig. A).
The ostium bursae is situated in the 8th sternite. On the caudal margin of the sternite a variable, usually limited number of hairs is present, situThe ostium bursae is situated in the 8th sternite. On the caudal margin
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