Callimyia. 13 



segment, then two on each of the following six segments and fmally 

 again four on the last segment, thus all roimd 48. Besides these 

 conspicuous and characteristic filaments there are on the dorsal 

 side small bristle-shaped papillæ in transverse rows, viz six at front 

 and hind margin of the second segment, the metathorax, and like- 

 wise six at hind margin of each of the five following segments and 

 four on the sixth. Further similar small bristles are present on the 

 ventral side at the margin below the filaments, and here on each 

 side one on the six first abdominal segments, on the metathoracic 

 segment two, and likewise on mesothorax, and on prothorax four 

 in a transverse row. Both the filaments and the bristle-like papillæ 

 seem to be of sensory function. The upper surface is otherwise covered 

 with small, wart-like spinules, On the last segment lie the small, 

 distant posterior spiracles above near the front margin, and below 

 is the anal opening. As mentioned nine segments are seen above, 

 while prothorax and head are hidden below; we would thus get 

 eleven segments; de Meijere thinks, however, that metathorax 

 which is rather long, in reality includes metathorax and first abdominal 

 segment, and this is, I think, correct, and it seems to be confirmed 

 by the facts found in other Platypezid larvæ, and also in the larva 

 of Lonchoptera. According to de Meijere the puparium is darker than 

 the larva, blackish brown, especially above; it is much arched ven- 

 trally and the filaments are directed upwards. By emerging of the 

 imago an anterior piece is detached, the rupture lies above between 

 metathorax (metathorax + first abdominal segment) and the first 

 (or second) abdominal segment, but below between meso- and meta- 

 thorax. 



Whether the species have two yearly broods I dåre not say, 

 but the long space of occurrence might possibly indicate so; also 

 de Meijere took his larvæ in July while mine were taken in September. 

 I think the larva hibernates. 



Of the genus perhaps six European species are known; two of 

 the species, elegans Meig. and leptiformis Fall. are, however, doubtful. 

 I have seen specimens of leptiformis in Zetterstedt's collection, and 

 I should be inclined to think it a separate species, but I can say 

 nothing sure. 



Table of Species. 



1. Halteres in both sexes orange; female with the basal half of 



abdomen orange 1 . amoena. 



— Halteres in male blackish, in female orange; abdomen in 



female with four yellow or silvery bands 2. speciosa. 



