Diptera danica : genera and species of flies hitherto found in Denmark . h parts mainly as in Syrphus, butlonger and more slender; labrum and hypopharynx somewhat long,considerably longer than in Syrphus, of the usual shape; maxillæ witha knife-shaped lacinia and a thread-like palpus, a little longer thanthe lacinia and with some bristles, for the rest lacinia and palpus asin Syrphus; labium somewhat slender, relatively longer than in Syr-phus, the basal part and the elongated oval labella of equal length,the former not incised at the ends. Thorax considerably longer thanbroad, rectangular; it
Diptera danica : genera and species of flies hitherto found in Denmark . h parts mainly as in Syrphus, butlonger and more slender; labrum and hypopharynx somewhat long,considerably longer than in Syrphus, of the usual shape; maxillæ witha knife-shaped lacinia and a thread-like palpus, a little longer thanthe lacinia and with some bristles, for the rest lacinia and palpus asin Syrphus; labium somewhat slender, relatively longer than in Syr-phus, the basal part and the elongated oval labella of equal length,the former not incised at the ends. Thorax considerably longer thanbroad, rectangular; it has a continuous or interrupted yellow line ateach side margin, and there are extended yellow spots on pleura;metapleura with dense, but quite short hairs. Scutellum yellow, with-out fringe below the margin. Thorax and scutellum without long and narrow, with parallel sides or even clavate. Inthe male there are five not transformed segments, the lirst small, theothers long, as long as or longer than broad, also the fifth long; this Sphaerophoiia. 339. Fig. 128. S. menthastri d. Fifth dorsal abdomi- nal segment, showing the unsymmetrical hind margin. latter is not quite symmetricai, but its hind margin has on the right side a small, somewhat triangular outshoot (fig. 128); on the ventral side there are likewise five normal segments. The genitalia are large and rather curious; on the left side lie the small sixth and seventh segments, the eighth lies at the end, and between it and the ninth there is on the right side a somewhat large connecting membrane; the ninth segment, the hypopygium, forms a large, oval, ball-shaped part, bent in under abdomen and lying symmetrically or almost so; this part is curiously built, for while in the other genera the ninth segment is more or less deeply incised at the end and the small outer lamellæ (tenth segment) lie in this excision, these lamellæ lie here on the dorsal (downwards turned) side of the ninth segment somewhat be
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
