Aphiochaeta. 357 



Female. Similar, only the costa longer. 



Length 1,8 to fully 2 mm. 



Remarks: I am not quite sure that the determination of this 

 species is correct, yet it agrees rather well with Wood's description 

 especially as regards the hypopygium, but the costa is in the male 

 rather short and the hind tibial bristles rather stout. The species 

 belongs to a group of difficult and nearly related forms ; I also possess 

 a number of specimens which I cannot determine as vernalis, nor 

 can I at present characterize them sufficiently, but I suspect a couple 

 of undescribed species among them. It is also seen that Wood described 

 his vernalis as rather varying, so f. inst. as regards the costal divisions 

 and the size. No doubt some species still will have to be made out 

 in this group. 



A. vernalis, as I understand it here, is rare in Denmark, I possess 

 only five males and four females; Ermehmd, Geel Skov (the author), 

 Holte (Th. Mortensen), on Langeland at Lohals and in Jutland at 

 Ry and in Hals Sønderskov at the east end of Limfjorden (the author); 

 the dates are 'Vs— V9 in 1918 to 1921. 



Geographical distribution: — A. vernalis is otherwise known 

 from England and, according to a specimen sent to me from Pater 

 Schmitz (and which I believe identical with my species), from Holland. 



105. A. sulphuripes Meig. 



1830. Meig. Syst. Beschr. VI, 219, 22 (Phora). - 1911. Brues, Bull. 

 Wisc. Nat. Hist. Soc. XII, 134. — Trineura flava Fall. p. p. var. 1823. Dipt. 

 Suec. Phytom. 7, 8. — Phora bicolor Meig. 1830. 1. c. VI, 219, 23. — Phora 

 flava Meig. (nec Fall.) 1830. 1. c. VI 219, 24, Tab. LXIII, Fig. 12. - Phora 

 lutea Meig. 1830. 1. c. VI, 220, 25. — 1838. Zett. Ins. Lapp. 797, 11 et 1848. 

 Dipt. Scand. VII, 2877, 26 {Trineura). — 1901. Beck. Abhandl. zool. bot. 

 Gesell. Wien, I, 54, 45, Taf. III, Fig. 53 [Phora). - 1909. Wood, Ent. Month. 

 Mag. 2, XX, 120, 148, fig. 5 [Phora). — 1910. Kertész, Cat. Dipt. VII, 408. — 

 1916. Engel, Wien. Ent. Zeitg. XXXV, 57. - Phora semiflava Hartig 1837. 

 Jahresber. ub. d. Fortschr. d. Forstwes. I, 305. 



Male. Frons broader than high, grey, often more or less reddish 

 at the front margin, or quite reddish grey or reddish, dull; inner 

 bristle of lower row not quite in the same height as the outer and in 

 the middle between it and the upper supraantennal ; supraantennal 

 bristles unequal, the lower scarcely half the size of the upper; the 

 upper supraantennals about in the same distance from each other 

 as the inner bristles of middle row, the lower only slightly more 

 approximate. Antennæ somewhat smallish, pale yellow, arista dist- 



