Aphiochaeta. 245 



0,44 of the wing-length, costal divisions about as 13 — 6 — 4; angle 

 at fork somewhat acute; costal cilia moderately long; fourth vein 

 evenly curved in the whole length. Halteres black. 



Female. Unknown. 



Length 2 mm. 



The bare pleura and black halteres place the species near fusci- 

 nervis to which species it also shows some general resemblance, but 

 as seen in the description it dillers in many points. 



Of the species only one specimen, a male, has been taken, Holte 

 on a fresh stub of a tree V4 1920 (Th. Mortensen). 



Geographical distribution: — Only known from Denmark. 



12. A. humeralis Zett. 



1838. Zett. Ins. Lapp. 796, 7 et 1848. Dipt. Scand. VII, 2862, 11, ? et 

 1860. ibid. XIV, 6474, 11, c? $ {Trineura). — 1901. Beck. Abhandl. zool. bot. 

 Gesell. Wien, I, 61, 54, $ {Phora). — 1910. Kertész, Cat. Dipt. VII, 408. — 

 1914. Brues, BuU. Wisc. Nat. Hist. Soc. XII, 121. — 1918. Scbmitz, Jaarb. 

 Natuurh. Genootsch. Limburg 1917, 140. — Phora cubitalis Beck. 1901. 1. c. I, 

 56, 47, c?. - 1908. Wood, Ent. Montb. Mag. 2, XIX, 171, 254 et 1912. 2, XXIII, 

 98. — Aphiochaeta cubitalis 1910. Kertész, 1. c. 406. 



Male. Frons considerably broader than high, grey, dull; bristles 

 strong, forming three nearly straight rows; inner bristle of lower 

 row in about the middle between the outer and the upper supra- 

 antennal; supraantennal bristles about equal or the lower somewhat 

 smaller, the upper a little more approximate than the inner bristles 

 of middle row, the lower rather close to the upper and very slightly 

 more approximate. Epistoma, genæ and lower part of occiput yellow, 

 the upper part grey. Antennæ of medium size, clear yellow, just 

 the apex of third joint brown, arista not long, distinctly pubescent. 

 Palpi pale yellow, of ordinary size and armature. Thorax blackish 

 or brownish black, somewhat greyish, nearly dull, it is reddish or 

 yellowish at the margin, especially at humeri and postalar calli; the 

 black pubescence somewhat bristly at the hind margin. Scutellum 

 with four strong and equal bristles. Pleura yellowish brown, darker 

 to blackish behind. Mesopleura bare. Abdomen somewhat robust, 

 greyish black, dull; it is distinctly hairy with short hairs, slightly 

 longer at the hind margins and especially at the sides; at the sides 

 of second segment there are longer, bristly hairs, and round the hind 

 margin of sixth segment are relatively long bristles; also the venter 

 is distinctly haired with rather long hairs. Hypopygium small, symme- 



