PTEROMALIDAE OF N.W. EUROPE 57 



2 (1) Antennal funicle of female with five, of male with six, segments. Propodeum 

 reticulate, rather dull. Gastral petiole of female slightly transverse ; of 

 male as long as or slightly longer than broad 



CHOETOSPILA (Westwood) (p. 61) 

 - Antennal funicle of female with six, of male with seven, segments. Pro- 



podeum posteriorly rather shiny with weak sculpture. Gastral petiole of 

 female strongly transverse ; of male slightly so. Body of $, Text-fig. 50 



THEOCOLAX (Westwood) (p. 62) 



CEROCEPHALA Westwood 



Cerocephala Westwood, 1832 : pi. 4. Type-species : C. cornigera Westwood, by monotypy. 



Epimacrus Walker, 1833 : 3O8. Type-species : E. rufus Walker, by monotypy. 



Sciathevus Ratzeburg, 1848 : 209. Type-species : S. trichotus Ratzeburg, by monotypy. 



Cerocephala Westwood ; Thomson, 1876 : 207, 210-212. 



Cerocephala Westwood ; Ashmead, 1904 : 334. 



Cerocephala Westwood ; Schmiedeknecht, 1909 : 385, 386. 



Parasciatherus Masi, 1917 : 189. Type-species : Cerocephala (Parasciatherus) caelebs Masi, 1917, 



by monotypy. 

 Proamotura Girault, 1920 : 143. Type-species : P. aquila Girault, by monotypy. 



Cerocephala Westwood 

 Cerocephala Westwood 

 Cerocephala Westwood 



Gahan, 1946 : 357-363. 

 Nikol'skaya, 1952 : 250, 255-257. 

 Peck et al., 1964 : 28. 



Epimacrus was synonymized with Cerocephala by Walker (1834 : l 4$)- Scia- 

 therus Ratzeburg was synonymized with Cerocephala by Forster (1856 : 41). 

 Parasciatherus Masi and Proamotura Girault were placed in synonymy with Cero- 

 cephala Westwood by Gahan (1946 : 358). 



Key to European Species 

 (Males) 



1 Head in dorsal view (Text-fig. 69) appearing strongly tridentate ; the lateral pro- 

 cesses of the face forming prongs which are almost as long as the eyes, and have 

 their outer edges converging only slightly forwards. Interantennal crest strongly 

 developed, in profile (Text-fig. 71) forming a pointed spike which is longer than its 

 basal breadth ; in profile the dorsal and front edges of the upper facial process 

 (Text-fig. 71, ufp.) form about a right angle. Face between the lateral crests 

 strongly concave, without a median carina. Antennal scape (Text-fig. 67) thick 

 and considerably expanded distally. Scutellum (cf. Text-fig. 69) narrowing for- 

 wards almost to a point ; frenum indicated by an area of delicate alutaceous 

 sculpture ........ cornigera Westwood (p. 59) 



- Head in dorsal view (Text-fig. 68) very weakly tridentate, the lateral processes of the 

 face hardly developed, hence the sides of the head converge strongly forwards. 

 Interantennal crest less strongly developed, in profile less projecting and not longer 

 than its basal breadth, often obtuse ; in profile the dorsal and front edges of the 

 upper facial process form an obtuse angle with each other. Face between the 

 lateral crests weakly concave, usually with a distinct median longitudinal carina. 

 Antennal scape rather more slender and less expanded distally. Scutellum more 

 rounded at its base ; frenum not marked off, except sometimes at the sides, usually 

 smooth like the rest of the scutellum, at most alutaceous at the sides and 

 posteriorly .......... rufa (Walker) (p. 60) 



