Dicerura foliicola Mamaev, 1968

Jaschhof, Mathias & Spungis, Voldemars, 2018, Towards reliable identification of male Dicerura: descriptions of three new and seven poorly known species in the Palearctic region (Diptera: Cecidomyiidae, Porricondylinae), Zootaxa 4422 (1), pp. 85-103 : 93

Dicerura foliicola Mamaev, 1968

Figs 13–15

This Far East Russian species is known only from the type series, which consists of two specimens of each sex reared from larvae ( Mamaev 1968). With a male body length of two millimeters, D. foliicola is one of the smaller species of Dicerura . The holotype male, which we studied here, is a pale, yellowish specimen with poorly contrasting genitalia; it is therefore possible that we missed inconspicuous substructures of the tegmen or ejaculatory apodeme.

Diagnosis. Characteristic of the gonocoxites is a rounded, asetose protrusion at the base of the ventral emargination, which has a glabrous border on either side ( Fig. 13 , ↓1). The medial gonocoxal bridges, which are

slightly protruding, are conspicuously densely setose. The gonostylus is characterized by the large medial lobe, which is strongly bulging ( Fig. 13 , ↓2), and the small, narrow apex, which is densely setose ( Fig. 13 , ↓3). The apical

fork of the ejaculatory apodeme consists of two lance-shaped rami, which are broader than in other species of Dicerura ( Fig. 15 , ↓4). The tegmen ends in a long, sharp point, which apparently is not an artifact of preparation

( Fig. 15 ). The ninth tergite, whose outline is broad-subtrapezoid, is very slightly concave and densely

microtrichose posteriorly ( Fig. 14 ).

Material examined. Holotype male (specimen no. P-Di0137 in ZMUM), with the data as specified in the

original description ( Mamaev 1968).

Figures

FIGURES 13–15. Dicerura foliicola, male, holotype. 13: Genitalia, ventral. 14: Ninth tergite, dorsal. 15: Tegmen and ejaculatory apodeme, ventral. Scales 0.05 mm. Arrows refer to characters described in the diagnosis.