Myiolepta. 489 



legs short-haired, also on femora the hairs only slightly longer; the 

 hairs on femora pale but more or less black above on the apical part, 

 tibiæ black-haired only except the usual, depressed, reddish or brownish 

 pubescence on the apical part belovv front tibiæ and on ventral and 

 posterior side of hind tibiæ; the femora are sulcated below in the 

 apical part and with two rows of short but somewhat strong, black 



Fig. 166. Wing of M. luteola d". 



spinules; hind femora also spinulose to the base. Wings yellow oi* 

 brownish yellow, especially at the base and on the anterior part; 

 stigma small and slight, below it an undeflned dark or blackish cloud; 

 medial cross-vein before the middle of the discai celi. Squamulæ 

 whitish with yellow margin and fringes. Balteres whitish or pale yellow, 



Female. Vertex and frons somewhat broad, widening dovvnwards, 

 black and shining; frons more or less distinctly trisulcate on the basal 

 part, with a pair of small, whitish dust spots; the hairs short and 

 pale. Epistoma without central knob, hollowed in the middle, with 

 the mouth edge produced; it is black, shining, silvery pruinose only 

 below the antennæ, along the eyes and on a stripe from the lower 

 part of the eye to the lateral angle of the oral margin. Abdomen 

 generally yellowish only on the sides of first and second segments. 

 Front tarsi black. 



Length S — 10 mm. 



M. luteola is not rare in Denmark; Ermelund, Ordrup Mose, 

 Bøllemosen, Ørholm; on Langeland at Lohals, and in Jutland at Reb- 

 bild near Skørping. My dates are ^Ve — ^^h. It occurs in fens and in 

 woods and thickets. The pupa has been taken in hollow trees in 

 Dyrehaven (Schlick), and in a hollow beech at Ørholm on Vt, developing 

 on ^li and "Vt (the author); on the latter place the pupæ were found 

 in the clay-like decaying wood together with larvæ and pupæ of 

 Xylomyia maculata. 



Geographical distribution : — Northern and middle Europe and 

 down into Spain and Italy; towards the north to southern Sweden. 



