PTEROMALIDAE OF N.W. EUROPE 159 



of several hairs. Pronotal collar slightly margined anteriorly 



aenea (Walker) (p. 164) 

 Maxillary stipites small, reaching only to level of top of foramen magnum, not 

 visible when the head is seen in dorsal view. Apex of basal cell of fore wing 

 bare or with only a very few hairs. Pronotal collar not margined but 

 rounded off anteriorly ...... circulus (Walker) (p. 163) 



Halticoptera collaris (Walker) 



Pteromalus collaris Walker, 1836 : 427, $. 

 Halticoptera planiscuta Thomson, 1876a : 248, $. 

 Halticoptera collaris (Walker) Graham, 19566 : 255. 



Type material. Pteromalus collaris Walker. Syntypes, 2 $. .LECTOTYPE, the 

 first specimen, which bears a Waterhouse label and a green-bordered Type label. 



Halticoptera planiscuta Thomson. Syntypes on 10 pins. LECTOTYPE, a female 

 labelled " Yd " [Yddingen] on a pink label, and " Scan ". Placed in synonymy 

 with collaris (Walker) by Graham (19566 : 255). 



Britain, Sweden ; probably widely distributed in Europe. 



Biology. Unknown. In England I have most often captured collaris upon 

 bracken (Pteridium aquilinum L.) so it may be associated with a host upon this 

 plant. Imagines appear May- June. 



Halticoptera smaragdina (Curtis) 



Phagonia smaragdina Curtis, 1832 : folio 427, $. 

 Pachylarthrus insignis Westwood, 1832a : 127, o*. 

 Halticoptera flavicornis Spinola ; Thomson, 1876a : 248,0* ?• 



Type material. Phagonia smaragdina Curtis. Described by Curtis from material 

 " In the Cabinet of Mr. F. Walker ". There is only one specimen, a male, now 

 standing under this name in Walker's collection, with a Waterhouse label 

 " Pachylarthrus smaragdinus Walker " ; it is designated LECTOTYPE (possibly it 

 is aholotype). 



Pachylarthrus insignis Westwood. One male, LECTOTYPE. It is pinned, the 

 pin thrust through a rectangular card ; it bears a tiny white ticket, also two labels 

 in Westwood's handwriting, a pink one reading " insignis Westw. " and a white one 

 " Dipl. patellana Dalm.". 



This species may be [Diplolepis] flavicornis Spinola, as Thomson thought. The 

 type material of flavicornis has not been located, so that the application of the name 

 is a matter of opinion. 



Britain, Ireland, Sweden ; fairly common. 



Biology. Reared in England from Philophylla heraclei (L.) on parsnip, celery, 

 and Smyrnium olusatrum L. (A. H. Hamm). In Sweden Jansson (1952 : 7) recorded 

 as hosts of "flavicornis Thomson " the flies Scaptomyzella flava Mg. (Drosophilidae) 

 and Liriomyza strigata (Mg.) (Agromyzidae) . Imagines in June and Aug.-Sept. 



