Actia. 467 



postocular bristles, and below witb. some pale bairs. Antennæ black 

 or brownish black, basal joints red; tbird joint short, about tbrice 

 as long ag second, broad and dilated, more tban balf as broad as long; 

 arista witb second joint elongated, tbird about twice as long, with 

 the basal balf tbickened. Palpi quite thin, yellow. Thorax grey prui- 

 nose, witbout stripes; scutellum grey, with the margin more or less 

 broadly pale. Thorax black-haired, with three postsutural dorso- 

 centrals. Abdomen short ovate, somewhat thick at apex, with the 

 genitalia more obvious than in the other species; it is black with a 

 large reddish yellow basal spot on each side, extending over second, 

 tbird and front part of fourth segment; abdomen may thus also be 

 termed yellow, with a backwards broadening median stripe and 

 apical part black; the front margin of the three last segments white 

 pruinose; abdomen is black-haired, with bristles as in the other 

 specieg. Legs a little robust, somewhat obscurely yellow; tarsi black. 

 Wings a little yellowish brown tinged; veins brown; posterior cross- 

 vein in the middle between medial cross- vein and angle; anal vein 

 reaching margin ; ciibital vein with somewhat strong bristles stretching 

 to medial cross-vein. Squamulæ yellowish. Halteres yellow. 



Female. Similar; frons in no way broader; antennæ with third 

 joint of same length but less dilated. Abdomen mainly coloured as 

 in the male, but much more greyish white pruinose, almost all over; 

 the long bairs at bind margin of the segments rather bristly. 



Length 4 — 4,7 mm. 



A. anomala is rare in Denmark; in Stæger's collection there is 

 a number of specimens from Skodsborg, and further I have seen one 

 specimen from North Sealand; according to Zetterstedt Stæger took 

 it numerously on flowers of Pastinaca in August. The specimens in 

 Stæger's collection are at all events co-types, and I have besides seen 

 the types in Zetterstedt's collection, sent from Stæger. It is to be 

 noted that the specimens in Stæger's collection are labelled rufina, 

 while anomala is not present ; Stæger seems to have altered the name 

 later on to rufina, perhaps after having seen this species; according 

 to Zetterstedts desoription, the species are also very similar, but 

 rufina is described to have a quite yellow scutellum and abdomen. 

 After a communication from Dr. Bengtsson rufina is not present in 

 Zetterstedt's collection, but perhaps it is in the collection to Ins. Lapp. 

 — The species has been bred from Lobophora viretata (Stein). 



Geographical distribution: — Europe down into France; not 

 known north of Denmark. 



30* 



