Aphiochaeta. 



233 



studied Zetterstedt's types and foimd flavicoxa identical with sex- 

 spinosa Wood (Wood 1. c. 254). I have also studied Zetterstedt's 

 types myself and can fully confirm Collin's statement. In Brues' 

 catalogue there is an error as he gives flavicoxa Zett. = ruftcornis 

 Meig., but puts sexspinosa = flavicoxa without any reference to rufi- 

 cornis. 



A. flavixoca is very rare in Denmark, only one specimen, a male, 

 has been caught, Ermelund ^Vs 1920 (the author); it was taken in 

 low herbage in a damp place. 



Geographical distribution : — Northern and middle Europe down 

 into Bohemia; towards the north to middle Sweden. Wood remarks 

 that the species seems to be double brooded, as, besides in early 

 summer, it again occurs in August to October. 



2. A. picta Lehm. 



1822. Lehm. Indic. scliol. Hambuig, 43, Tab. I, Fig. 6 et 1824. Acta 

 Acad. Leop. Carol. XII, 245 {Phora). — 1896. Mik, Wien. Ent. Zeitg. XV, 112 

 {Phora). — 1901. Beck. Abhandl. zool. bot. Gesell. Wien. I, 52, 42, Taf. III, 

 Fig. 50 {Phora). — 1908. Wood, Ent. Month. Mag. 2, XIX, 169, 216 {Pliora). 

 — 1910. Kertész, Cat. Dipt. VII, 410. — 1914. Brues, Bull. Wisc. Nat. Hist. 

 Soc. XII, 126. — 1918. Schmitz, Jaarb. Natuurh. Genootscli. Limbmg 1917, 

 136. — Trineura interrwpta Zett. 1838. Ins. Lapp. 797, 12 et 1848. Dipt. Scand. 

 VII, 2878, 27. — 1864. Schin. F. A. II, 337, 343 {PJiora). 



Male. Frons fully as high as broad, yellow, sometimes greyish; 

 bristles strong, the inner bristles of lower row nearly vertically below 

 the outer (fig. 76); supraantennals large, 

 equal, the upper rather distant, placed nearly 

 in the middle between the median furrow and 

 the eye-margin, the lower more approximate. 

 Antennæ of medium size, orange, arista dist- 

 inctly pubescent. Palpi pale yellow, of ordinary 

 size and armature. Thorax yellow with black 

 or brownish pubescence, between the dorso- 

 central bristles some bristly hairs. Scutellum 

 with four equal bristles (abnormally five to 

 six). Pleura yellow, below the squamula a 

 somewhat hammer-shaped black spot. Meso- 

 pleura bare. Abdomen of conical shape, taper- 

 ing behind; it is yellow with broad, black, transverse bands on the 

 front part of the segments, but the bands nearly always interrupted 



Fig. 76. Frons of 

 A . p icta ^ . 



