PTEROMALIDAE OF N.W. EUROPE 547 



than the pedicellus when the latter is seen in dorsal view ; pedicellus about 1 -5 times as long as 

 broad ; first funicular segment from slightly longer than, to about 1 -5 times as long as, the 

 pedicellus, 1-25 to i-6 times as long as broad, sixth segment quadrate or slightly longer than 

 broad. Row of hairs on lower surface of costal cell complete or somewhat interrupted. 



Britain, Ireland, Sweden, Germany, Czechoslovakia. 



Biology. Varley (1947 : 170) found that albipennis attacked Chaetostomella 

 cylindrica R.-D. (—onotrophes Loew) and Chaetoriella jaceae (R.-D.), two non-gall- 

 forming Trypetid flies occurring in the flower-heads of Centaurea nemoralis Jord. ; 

 I have examined Professor Varley's material. Other specimens which I have 

 identified as albipennis were reared in England by Mr. M. Niblett, from the following 

 hosts (according to their labels) : — Tephritis bardanae Schr. and Trypeta [=Orellia] 

 tussilaginis F. on Arctium lappa L. ; Trypeta [—Orellia] winthemi Mg. on Carduus 

 crispus L. (material in Hope Dept., Oxford). Imagines occur in the field June- 

 August (occasionally some appear in May). 



Habrocytus temporalis sp. n. 



(Text-fig. 410) 



$. Very close to albipennis (Walker) and intermedins (Walker). Differs from albipennis as 

 follows : 



Head in dorsal view (Text-fig. 410) slightly less transverse, only 2 to 2-05 times as broad as 

 long ; temples longer, nearly half as long as the eyes, converging only slightly. Fore wing 

 with postmarginal vein longer, i-i to 1-25 times as long as the marginal vein ; marginal vein 

 1-25 to 1-4 times as long as the stigmal vein. Pronotal collar rather longer, medially about one 

 fifth as long as the mesoscutum, its front edge sharp. 



From intermedins it differs in the characters given in the key to females (see couplet 20). 



<J. Differs from that of albipennis in having a pale subbasal spot on the gaster ; antennal 

 scape reaching the level of the vertex ; temples, in dorsal view of head, longer and less con- 

 vergent. From that of berylli (Walker) it differs in the characters given in my key to males of 

 Habrocytus. 



Holotype $. Sweden : Holland, Snostorp, 17.vii.1954 (H. Andersson : serial 

 no. M408), in Universitetets Zoologiska Institution, Lund. 



Paratypes. Same locality, 1 <$. 14.vii.1954, 1 $, 17.vii.1954 (H. Andersson). 



Biology. Unknown. 



Habrocytus patro (Walker) comb. n. 



Pteromalus Patro Walker, 1848 : 125, 195, o*. 



The male of patro is easy to distinguish from that of albipennis ; but the female 

 here associated with it (I presume correctly) is very similar to that of albipennis. 



$. Differs from that of albipennis as follows : Gaster on the average slightly longer, 3-2 to 

 3-5 times as long as broad, 1 -25 to 1 -3 times as long as head plus thorax, rather more compressed. 

 Venation more fulvous in colour. 



Malar space somewhat more than half as long as an eye. Length of body, 3-5 to 3-7 mm. 



o*. Differs from that of albipennis as follows : Gaster with a yellowish subbasal spot. Anten- 

 nal scape reaching the level of the vertex, entirely testaceous or darkened only distally ; flagel- 



