72 M. W. R. de V. GRAHAM 



- Fore wing with marginal vein from nearly twice, to slightly more than twice, 



as long as the stigmal vein. Propodeum with the raised crest formed by 

 the anterior part of the median carina hardly projecting beyond the level of 

 the tip of the scutellum ......... 4 



4 (3) Antenna with nagellum moderately clavate, fuscous or brown with at most 



the funicle testaceous beneath ; clava as long as 3 to 3-5 of the preceding 

 funicular segments together. Length i-i to i-6 mm. 



? areolatus (Ratzeburg) (p. 73) 



- Antenna with nagellum strongly clavate ; antenna yellowish with the pedi- 



cellus black and the base of the funicle slightly darkened ; clava about as 

 long as the four preceding funicular segments together. Length 1 mm. 



merceti Masi (p. 74) 



5 (1) Fore wing with marginal vein from nearly twice, to slightly more than twice, 



as long as the stigmal vein. Antennal clava hardly longer than the three 

 preceding funicular segments together . . . aquisgranensis Masi (p. 74) 



- Fore wing with marginal vein only about 1 -5 times as long as the stigmal vein. 



Antennal clava about as long as the whole funicle . . parvulus Masi (p. 74) 



Two other species, subcyaneus Erdos and acutus Kurdjumov, are not included in 

 the above key ; for further information on these, their original descriptions should 

 be consulted. 



E UNO T US (E UNO T US) Walker 

 Eunotus (Eunotus) cretaceus Walker 



Eunotus cretaceus Walker, 1834 : 298, " $ " [recte $], " $ ". 



Eunotus cretaceus Walker ; Haliday, 1841-1842 : v, pi. A, fig. 4, " $ " [recte $]. 



Eunotus festucae Masi, 19286 : 128, $ $. 



Eunotus cretaceus Walker ; Masi, 193 1 : 426-428, <$ <j>. 



Type material. Eunotus cretaceus Walker. One female, LECTOTYPE ; " Isle 

 of Wight " and Waterhouse label " Eunotus cretaceus Walker ". Walker's Latin 

 diagnosis and description apply well to the lectotype, the sex of which he mistook. 

 His " female ", which he described solely as " aptera ", must have been something 

 different. He further says " I found one specimen of the female in the same situa- 

 tion, but have since lost it ". 



Eunotus festucae Masi. Types (not seen) presumably in Museo Civico di Storia 

 Naturale, Genoa. From Masi's description there is no doubt that it is the same as 

 cretaceus. It was placed in synonymy with that species by Masi himself (1931 : 

 426, 428) after Ferriere had compared a specimen of festucae with the type female of 

 cretaceus and recognized that the two were identical. 



Widely distributed in Europe. 



Biology. In Oxford, Professor Varley has recently studied cretaceus in relation to 

 one of its hosts, Eriopeltis ? strelkovi Borchsenius. He states (personal communica- 

 tion) that the Eunotus larva is predatory and eats the eggs of the Eriopeltis. A few 

 of the Eunotus imagines may emerge from one host ovisac. Imagines June-August. 



