Aphiochaeta. 255 



as 7 — 3 — 2, thiis 1 longer than 2 + 3; third vein somewhat thick, 

 fork long and rat her acute; costal cilia short; fourth vein evenly 

 curved. H alteres yellow. 



Female. Similar; abdomen with the bands broader and more 

 brownish, so that it is blackish brown with yellow hind margins to 

 the segments. 



Length 2,5 — 3,5 mm. 



This species is, as seen from my description, very similar to picta, 

 but the frontal bristles are otherwise arranged and there are no 

 anterodorsal bristles on posterior tibiæ; also other characters are 

 foimd, thiis there are no long hairs at the sides of second abdominal 

 segment, and the long hairs below hind femora do not reacli the 

 middle. 



A. pseudopicta is rare in Denmark, we have five specimens, a 

 male and foiir females, labelled "from beech, Sælsølimd, Koch leg." 

 (Schlick); perhaps the species was bred from a beech-tree. 



Geographical distribution: — Only known from Denmark. 



Remarks: This species, which is picta so similar in colour, is 

 absolutely distinct from that species, both by the frontal bristles, 

 the bristles on tibiæ and also by the costal divisions; from Giraiidii 

 it is distinct alone by the colour and also by other characters, and 

 Meigeni is different alone by the hypopygium, so there can, I think, 

 be no doubt that the species is new; I state this because I am not 

 quite sure with regard to the group characters taken from the frontal 

 bristles and the tibial bristles; the latter, as said under Giraiidii, 

 may be few and small and no doubt sometimes totally disappearing 

 [suhmeigeni Wood), and also the frontal bristles may vary in arrange- 

 ment and are f. inst. in Giraudii more approaching the usual arrange- 

 ment than in picta. It is also seen that while describing pseudogiraiidii 

 Schmitz (Entom. Ber. Nederl. Ent. Ver. V, 1920, 252) had in mind the 

 possibility that it might be a var. of Giraudii. 



20. A. emarginata Wood. 



1908. Wood, Ent. Month. Mag. 2, XIX, 172 et 1912. 2, XXIII, 98 {Pliora). 

 - 1914. Brues, Bull. Wisc. Nat. Hist. Soc. XII, 117. - 1918. Schmitz, Jaarb. 

 Natuurh. Genootsch. Limburg 1917, 145. 



Male. Frons low and broad, nearly twice as broad as high, greyish 

 black, dull; bristles strong, the inner bristle of lower row about in 

 the same height as the outer and nearer to it than to the upper supra- 



