RECLASSIFICATION OF MICROGASTERINI 209 



In 1922, Muesebeck wrote that the type of zonaria Say was lost and published 

 Protapanteles recurvariae Ashmead as a synonym of it. He has been good enough 

 to send me specimens of recurvariae and I have based my conception of Hypomicro- 

 gaster on this species. 



In order to find a means of dividing up the large number of species from all parts 

 of the world falling within the loose definition of Microgaster auctt., I have found 

 it convenient to make use of Hypomicrogaster. I have accepted the genus in a wide 

 sense, splitting it into various species-groups. The resulting arrangement may be 

 somewhat artificial but I hope it will provide at least a working foundation from 

 which further investigations may be made. 



Key to Species-groups 

 Females 



1 Metacarp very short, hardly longer than its distance from the apex of the radial cell. 



Antenna short, thick ; mesoscutum highly polished, impunctate ; tergite 1 

 considerably longer than wide, more or less parallel-sided and almost polished ; 

 ovipositor sheath hardly more than half as long as the hind tibia. Europe. 



westntieli- group (p. 210) 



- Metacarp much longer than this ......... 2 



2 Propodeum with a more or less distinct areola and costula, the areola usually poorly 



defined and traversed by irregular keels and rugae. 



Areolet very small, sometimes reduced to a mere slit ; 2nd transverse cubitus 

 always arising from the 1st transverse cubitus ; inner spur of the hind tibia con- 

 siderably longer than half the hind basitarsus ....... 3 



- Propodeum without either areola or costula ....... 4 



3 Tergite 1 distinctly narrowed behind, dull, coarsely rugose ; areola deep and more or 



less smoothly excavated. Brazil ..... virbius-Qroup (p. 210) 



- Tergite 1 not at all narrowed behind, usually slightly widened here ; somewhat shiny 



and, where it turns over, usually with well defined punctation ; areola, if defined 

 at all, shallow, very irregular in outline and often divided by a weak, longitudinal 

 keel. American continent ...... zonaria-group (p. 212) 



4 Areolet very small, the 2nd transverse cubitus arising from the 1st at a considerable 



distance proximal to the junction of the 1st and 2nd abscissa of the radius. 



Tergite 1 always very distinctly narrowed behind ; propodeum with strong, 

 medial keel. Indo-oriental region ..... psarae- group (p. 217) 



- Areolet much larger, the 2nd transverse cubitus arising from the 2nd abscissa of the 



radius or interstitial with this (but see laurae de Saeger in vacillatrix group) . 5 



5 Hind spurs short, subequal .......... 6 



- Hind spurs not subequal, the inner one always considerably longer than the outer one. 



Propodeum with a medial keel but never with trace either of costula or areola ; 

 tergite 1 always strongly narrowed behind, more or less wedge-shaped. Old World 



vacillatrix-group (p. 219) 



6 Propodeum coarsely rugose and with a strong, medial keel ; side of pronotum with 



foveate, dorsal furrow (Text-fig. 262) ; radial cell markedly downcurved at apex. 

 Wings strongly darkened ; hind coxa and hind tibia black and in sharp contrast 

 with the bright yellow femur which is merely tipped with black. Australia 



epap/ius- group (p. 215) 



- Propodeum in greater part smooth and without a medial keel ; at most some rugosity 



surrounding the posterior orifice ; side of pronotum without trace of a dorsal furrow ; 

 radial cell not markedly downcurved at apex. 



