376 Phoridae. 



vein issuing behind the base of the fork, distinctly thoiigh not much 

 curved in its first part, for the rest almost straight. Halteres yellow. 



Female. Similar, but abdomen without long hairs; hairs below 

 hind f emora about in the as the male or a Httle shorter ; angle at fork 

 generally more acute. 



Length 2 — 3 mm; this is the common size, but much smaller 

 specimens, especially males, may be met with, down to 1,5 mm. 



Wood says that the characteristic hairs on abdomen are absent 

 from the dorsum except on the hind margins of the segments, but, 

 according to my examination, there are no long hairs on the dorsum, 

 also not at the hind margins. 



A. rufipes is very common in Denmark, as it is elsewhere, and it 

 is especially common indoors, but also taken in woods; it is not rarely 

 seen in copula; it occurs almost during the whole year, except just 

 in midwinter. It is known as a general feeder in the larval stage, 

 which is probably the reason of its frequent occurrence in our houses. 

 I possess it bred from wasps nests, taken in September, the imagines 

 emerging about ^°/io, from bee-hives in May, and from sick and dead 

 larvæ of Stilpnotia salicis taken in July, the imagines emerging on 

 ^U, further from fungi and from decaying seed of lupines. 



Geographical distribution: — Widely distributed and common, 

 occurring in all Europe and on Madeira and the Canaries; towards 

 the north to northern Scandinavia; also occurring in North America 

 and also here going far towards the north into Alasca. Zetterstedt 

 records it from the mountains at a height of 3400 feet. — Phora 

 heracleellae Bouché, which Becker considered identical with his 

 sordida {= Woodi Lundbk.), is, as mentioned above under Woodi, 

 more probably the present species. 



119. A. hirtiventris Wood. 



1909. Wood, Ent. Month. Mag. 2, XX, 194, 243, fig. 6 {Phora). — 1914. 

 Brues, Bull. Wisc. Nat. Hist. Soc. XII, 121. 



Male. Frons broader than high, black, slightly greyish, dull; 

 inner bristle of lower row a little below the outer and about in the 

 middle between it and the upper supraantennal ; supraantennal 

 bristles unequal, the lower quite small; the upper supraantennals as 

 distant as the inner bristles of middle row, the lower more approximate. 

 Antennæ rather large, blackish brown or blackish, arista short-pube- 

 scent. Palpi yellow, of ordinary size or scarcely, bristles somewhat 



