154 Phoridae. 



This species varies, as seen, to a very high degree; it varies 

 especially in size, in the colour of antennæ, palpi, anal tube and 

 especially balteres, in tbe dimensions of tbe frons, in tbe size of tbe 

 antennæ in tbe male, in the number and development of tbe bristles 

 on middle and hind tibiæ, in the colour of the wings, and in the dimen 

 sions of costa and its divisions. Schmitz mentions that specimens of 

 all reddish brown colour may occur, but I have never seen sucb. 

 Tbe species is similar to crassicornis, but besides by other chiaracters 

 it will always be distinguished by the want of anterodorsal bind 

 tibial bristles, and the female by having no tergal plate on fifth ab- 

 dominal segment. Strobl described (Wien. Ent. Zeitg. XI, 1892, 199) 

 a species pseudoconcinna which is evidently only a small form with 

 clear wings, costa considerably tbickened in second and third divi- 

 sions, and with fourth vein issuing at tbe base of the fork, characters 

 which may occur in concinna. Schmitz (1. c. 1918) says, that Strobl 

 described pseudoconcinna with bare hind tibiæ, but this is not correct; 

 Strobl says, that there are three anteroventral bristles, but as he 

 erroneously considered concinna as possessing also anterodorsal 

 bristles, this was for him a distinguishing character. Schmitz describes 

 1. c, a var. pachycera, which he in 1920 1. c. considers as a separate 

 species, with large antennæ, very small hind tibial bristles, clear 

 wings and other small characters; only the male is known. Further 

 be describes (1. c. 1918) a var. rostralis, especially characterized by 

 a long, slender proboscis, tbe labrum being twice as long as broad, 

 and with some other minor characters, f. inst. relatively smaller 

 wings. I possess three males (two from Hejls ^Vt and ^V? 1919 and 

 one from Fanø ^7? 1921) which in tbe shape of proboscis and in most 

 other characters agree with the description by Schmitz, at the same 

 time my specimens have tbe sixtb abdominal segment unusually 

 densely and long haired. 



Whether the species Trineura concinna Zett. quoted in the syno- 

 nymy, and which was based on a communication from Stæger in 

 which concinna was enumerated as Danish, really was this species, 

 I cannot say; the specimens are not found in Stæger's collection, 

 and there is the curious faet, that this common species is not at all 

 represented in Stæger's collection. I have seen Zetterstedt's types 

 of gymnophorina and can confirm Becker's statement that they are 

 identical with concinna. 



D. concinna is very common in Denmark all over the country, 

 and found in very various localities; it may also be taken indoors 



