256 G. E. J. NIXON 



resolvable as obvious punctation ; flagellum with bristly pubescence (Text-fig. 309). 



Mesoscutum shiny and with large, on the whole well separated, punctures 



austrina (Wilkinson) 59 



S. Africa : Cape Province, Pondoland, Port St. John (type locality) . Type in the 

 British Museum (Nat. Hist.). 



The series recorded as austrina by Wilkinson (1930 : 282), is a different species. 

 The hind spurs of this species are shorter than in spretus and tomentosa. 



The C A LC EAT 'US -Group 



I include two species in this group ; they are perhaps less closely related than their 

 external appearance suggests. 



Ocelli not in a very low triangle, the posterior, transverse tangent to the anterior ocellus 

 hardly touching the posterior pair. Mesoscutum very shiny, at most with fine punctation ; disc 

 of the scutellum markedly convex ; posterior, polished band of the scutellum not in the least 

 interrupted at middle by rugosity. Propodeum without trace of medial keel ; shiny but 

 vaguely rugose-punctate. Tergites with fine hairs all over. Sheath of ovipositor without 

 setiform appendages at tip. 



In general habitus, the two species bear a striking resemblance to the vitripennis- 

 group of Apanteles, especially with regard to the structure of the head and thorax 

 and the sculpture of the mesoscutum and propodeum. 



Key to Species 

 Females and Males 



A Hind femur and hind tibia infuscate at apex ; phragma of the scutellum widely 

 visible ; metacarp about four times as long as its distance from the apex of the 

 radial cell (Text-fig. 317) ; spines of the outer side of the hind tibia fine, more erect, 

 well separated, sparser ........ calceatus (Haliday)™ 



Europe. Type presumably in the Dublin Museum, Ireland. 



Host: They a variata Schiffermuller ; Thera obeli scata Hiibner (Geometridae). 

 A solitary parasite, making a pale brown cocoon. 

 B Hind femur and hind tibia entirely reddish-yellow ; phragma of the scutellum hidden ; 

 metacarp about twice as long as its distance from the apex of the radial cell ; spines 

 of the outer side of the hind tibia much thicker, less erect, more numerous and, to 

 some extent, overlapping (Text-fig. 305). 



1st discoidal cell distinctly smaller than in calceatus . . circumvectus (Lyle) 61 



Europe: England, New Forest (type locality) ; Finland. Type in the British 

 Museum (Nat. Hist.). 



Host: Lobophora carpinata Borkhausen (now Nothopteryx). (Geometridae). 

 Solitary parasite making a very characteristic cocoon, dark brown in colour, shorter 

 and more barrel-shaped than that of calceatus. 



The mesoscutum is more shiny and more distinctly punctate in this species than 

 in calceatus and the propodeum is shorter. The densely spinose hind tibia is a 

 distinctive feature of this species. 



B9 Microgaster austrina Wilkinson, 1929 : 119. 



Protomicroplitis austrina (Wilkinson) comb. n. 

 60 Microgaster calceatus Haliday, 1834 : 241. 



Protomicroplitis calceatus (Haliday) comb. n. 

 61 Diolcogaster circumvectus Lyle, 191 8 : 105. 



Microgaster circumvectus (Lyle) Fahringer, 1937 : 335- 



Protomicroplitis circumvectus (Lyle) comb. n. 



