THE ENTOMOLOGIST 



Vol. XLVIL] AUGUST, 1914. [No. 615 



NOTES ON THE BEITISH SPECIES OF SYM- 

 PHEROBIUS (HEMEROBIUS), INCLUDING ONE 

 HITHERTO UNNOTICED. 



By Kenneth J. Morton, F.E.S. 



(Plate V.) 



In the Trans. Am. Ent. Soc. xxxii., December, 1905, pp. 28-29, 

 Banks split up the genus Hemerohius into three, giving the 

 following synopsis : — 



No outer cross-veinlets in hind wings, only four, or 

 less, in outer gradate series of fore wings ; usually 

 but two radial sectors ; a cross-veinlet connecting 

 first radial sector to median ; the median is usually 

 a little bent toward the cubitus at connecting vein- 

 let; in hind wings the median usually forks plainly 

 beyond forking of radial sector : small species . Syinpherobius. 

 Outer cross-veinlets present in hind wings ; more than 

 four veinlets in outer gradate series in fore wings ; 

 usually three or four radial sectors. 



(a) A cross-veinlet connecting first radial sector 

 to median some distance out on the former ; 

 often four radial sectors ; the median is rarely 

 bent toward the cubitus at connecting veinlet ; 

 in hind wings the first radial sector forks as 

 far out as forking of median : larger species . Boriomyia. 

 {h) The cross-veinlet from median to radius is 

 before or at origin of radial sector, never out 

 upon it ; three, rarely four, radial sectors ; the 

 median is more or less bent toward cubitus at 

 connecting veinlet ; in hind wings the median 

 is forked further out than fork of first radial 

 sector ....... Hemerobms. 



The author states that this division will apply to the 

 European species thus : — Hemerohius (s. str.) : humuli, micans, 

 atrifrons, nitidulus, stigma, limbatellus, lutescens, orotypus. Borio- 

 myia : concinnus, 4-fasciatus, subnebulosus, nervosus. Symphero- 

 bius : elegans, parvuliis, inconspicuus. 



ENTOM. — AUGUST, 1914. S 



