Myiolepta. 



485 



The species are of medium size, with pale markings on abdomen 

 much as in Tropidia (or, in non-Danish species, without markings), 

 and very slightly hairy. Head a little broader than high, narrowing 

 downwards, slightly broader than thorax; behind it is flat below, ex- 

 cavated above. Eyes bare, touching in the male, separated in the 

 female ; the facets in the male somewhat enlarged on the upper front 

 part. Frons somewhat prominent. Antennæ inserted in the middle 

 of the head, short, third joint oval; arista long and thin, apparently 

 bare. Epistoma strongly hoUowed below the antennæ in the male, 

 with a small but prominent central knob and below it a little hol- 

 lowed or retreating, and the mouth edge a little produced, thus the 



Head of M. luteola. 



Fig. 164. Male. 



Fisr. 165. Female. 



lower part of epistoma somewhat prominent, slightly descending; in 

 the female there is no central knob, the epistoma being hollowed 

 from the antennæ to the produced mouth edge, (In ruficornis [non- 

 Danish] the eyes are not touching in the male, and in both sexes the 

 epistoma has no central knob). The epistoma is black but white 

 pruinose except the central knob or lower part. Jowls small, a little 

 descending; there are narrow, somewhat indistinct eye-margins with 

 short hairs, they stretch half way up the epistoma. The frons slightly 

 short-haired ; epistoma bare. Oral cone and proboscis of medium 

 length; mouth parts of usual construction, the maxillar palpus a little 

 longer than the lacinia ; labium with the basal part and the somewhat 

 broad labella of about equal length. Thorax rectangular but some- 

 what narrowed in front. Scutellum black, marginate^ with not long, 

 bristly hairs at the margin ; it has no marginal fringe below. Abdomen 

 a little broader than in Tropidia, the fourth dorsal segment not bent 

 down such as in this genus, and the fourth ventral segment simple. 



I 



