115 



The eggs of T. Richardii are unknown; most probably they are laid in the 

 manner of the genus Culex in eggboats. ECKSTEIN (1919 p. 288) writes; "Es ist mir 

 gelungen T. Richardii aus den Eiern zu ziichten", giving no description of the eggs; 

 he refers to a future paper. 



Genus V. Theobaldia. 

 Tab. XVII. 



1. Theobaldia annulata (Schrank). 



Imago. This mosquito is recognizable at a first glance from all other Danish 

 Culicinse by its spotted wings, a characteristic it shares with T. glaphyropterus 

 which has not hitherto been found in this country. It is the largest of all our mos- 

 quitoes ; its large size, its spotted" wings, the white banded legs make it one of our 

 most conspicuous and also one of our most beautiful species. 



Larva. Head rounded, rather small, wider than long, a notch at insertion of 

 antennae, front margin arcuate. Antennae very short rather thick, tapering at front 

 spinose, tuft small, only consisting of about five to seven hairs, inserted directly 

 without notch on the antennae and below middle. Near the apex two hairs, on the 

 apex itself three hairs and a digit. Anteantennal tuft multiple; lower frontal tuft 

 with six hairs, upper with one very long, and two shorter ones. Eyes large; a re- 

 markably well developed tuft in the notch between the eyes and antenna ; a charac- 

 teristic coloration of the head integument (see fig. 1). 



Thorax subquadratic, angled at hair-tufts. Hair formula of frontal border 

 341144441143; I have also found 341145541143; the median tuft consist of one long 

 and three or four very short hairs; the. next tuft of four hairs always short. Lateral 

 hairs in- multiple tufts and some single strong hairs. 



Abdominal segments broad, the first of them much shorter than the last. 

 Lateral hairs on the first segment multiple, on the third triple, on the third to sixth 

 double; subdorsal hairs on third to sixth segment double; between them and the 

 lateral hairs a single hair; the eighth segment with tufts in common arrangement, 

 the upper double; lateral comb consisting of about forty scales arranged in rows, 

 occupying a triangular area; the scales are long, spatulated with a feathered base 

 without median thorn. Sipho rather short, straight, slightly tapering at apex. A short 

 pecten consisting of about ten, short, feeble thorns, without any or with very indi- 

 stinct teeth at base; then a series of about twenty long, soft, flexible hairs. 



No tuft of hairs between apex and .end of pecten, but a large tuft at the basis 

 of the pecten. Anal segment broader than long, ringed by a plate. Dorsal tuft con- 

 sisting of a rather compact tuft of rather long, soft hairs, two very long stiff hairs 

 and some others much softer and almost equally long. Ventral brush large, con- 

 sisting of about 17 rays; on the barred area every ray carrying from 14 to 16 hairs; 

 before the barred area five short tufts; a lateral tuft with three short hairs. Anal 

 gills moderate, equal, acute. 



15* 



