

570 M. W. R. de V. GRAHAM 



Key to European Species 



(Females) 



i Gaster ovate, i -55 to 1 -7 times as long as broad, slightly shorter than head plus thorax. 

 Propodeum medially nearly or about half as long as the scutellum ; its median area 

 about 1 *5 times as broad as long ; costula usually sharp. Fore wing with basal 

 cell, not counting the basal vein, bare, or with at most one to three isolated hairs 

 distally, open below ; stigmal vein forming a less acute angle (about 45°) with the 

 postmarginal vein, stigma moderate sized . . . lauta (Walker) (p. 570) 



- Gaster sublanceolate, 2 to 2-6 times as long as broad, as long as or slightly longer than 



head plus thorax. Propodeum medially about two fifths as long as the scutellum; 

 its median area nearly twice as broad as long ; costula weak and irregular. Fore 

 wing with basal cell with hairs scattered over its distal third or more ; stigmal 

 vein forming a more acute angle (35° to 40 °) with the postmarginal vein, stigma 

 rather smaller than in lauta ...... inflexa (Ratzeburg) (p. 571) 



(Males) 



1 Antenna with hairs of flagellum virtually decumbent ; funicle with numerous 

 sensilla which are arranged in more than one row on each segment. Wing-charac- 

 ters as in female, but the stigma tends to be relatively a little larger lauta (Walker) (p. 570) 



- Antenna with hairs of flagellum standing out at an angle of about 30 ; funicle with 



sparser sensilla, arranged in one, sometimes irregular, row on each segment. Wing- 

 characters as in female ....... inflexa (Ratzeburg) (p. 571) 



Caenacis lauta (Walker) comb. n. 



Pteromalus lautus Walker, 1835a : 186, 9- 

 Pteromalus divisus Walker, 1836 : 480, 9, syn. n. 

 Pteromalus strenuus Forster, 1841 : 11, 9. syn. n. 

 Pteromalus nervosus Forster, 1841 : 15, o", syn. n. 

 Pteromalus humilis Forster, 1841 : 15, <$, syn. n. 

 PPteromalus capnopterus Ratzeburg, 1848 : 189. 

 Pteromalus incrassatus Ratzeburg, 1852 : 243, $, syn. n. 

 Etroxys {Caenacis) grandiclava Thomson, 1878 : 95, 6* ?< syn. n. 

 Caenacis grandiclava Thomson ; Mayr, 1903 : 397. 

 Caenacis divisa (Walker) Delucchi, 1957 : 157, o* ?• 

 Caenacis divisa (Walker) ; Askew, 1961 : 58. 



Type material. Pteromalus lautus Walker. One female, LECTOTYPE ; Water 

 house label. 



Pteromalus divisus Walker. Four males and one female stand under this name 

 (but only the female was described) ; LECTOTYPE, the female specimen, bearing 

 a Waterhouse label. 



Pteromalus strenuus Forster, P. nervosus Forster and P. humilis Forster were 

 placed in synonymy with divisa (Walker) by Delucchi (1958a : 55) and I accept his 

 opinion. I have not seen the types of these species, which are in the Naturhistori- 

 sches Museum, Vienna. 



Pteromalus capnopterus Ratzeburg. Types presumed destroyed. Kurdjumov 

 (1913 : 16) placed it in Caenacis. The description certainly suggests that it might 

 be the same as lauta (Walker). 



