RECLASSIFICATION OF MICROGASTERINI 219 



All the coxae dark, the hind pair virtually black ; tergite 1 not strongly narrowed 

 posteriorly ; its apical width fully two thirds its greatest width (near base). 



Very dark species ; abscissa 1 of the radius longer than in the next two species 

 and straight ; gaster, except sides of tergite i, and beneath, entirely dark ; hind 

 spurs brown ; areolet almost round ; larger than both psarae and botydis, ca. 

 6 mm. without ovipositor ........ libanius sp. n. 



Philippines: Mindanao, Surigao, 1 ?, theTYPE, 1 q\ (Baker). Type in the U.S. 

 National Museum. 

 At least the front and middle coxae entirely yellowish and the hind pair pale at least at 



base ; tergite 1 more narrowed posteriorly or entirely yellow .... 5 



Tergite 1 entirely yellow and apically about two thirds as wide as its greatest width ; 

 gaster almost entirely yellow, darkening occurring only across the median field ot 

 tergite (2 + 3) or at middle of all tergites ; hind femur entirely reddish-yellow ; 

 hind coxa darkened only on outer side apically ; head, in a facial view, not at all 

 elongate ; mouth parts (Text-fig. 265) ; basal tergites (Text-fig. 276) ; fore wing 

 (Text-fig. 273) ......... psarae (Wilkinson) 42 



Malaya. Siam. Type in the British Museum (Nat. Hist.). 



Host: Psara bipunctalis F. (Pyralidae). 

 Tergite 1 darkened on its turned over apical part, much more narrowed behind and at 

 apex about half as wide as its greatest width ; within its excavated basal part it is 

 contrastingly reddened ; gaster in greater part dark, broadly yellow along sides of 

 tergite 1 and all over its ventral surface at base ; hind femur entirely brown ; hind 

 coxa dark on about apical half, pale yellow towards base and, on outer side, with a 

 tongue of darker colour extending into the yellow ; head, in a facial view, decidedly 

 elongate (Text-fig. 267). 



The turned over, posterior part of tergite 1 is strongly, almost continently 

 punctate .......... botydis (Wilkinson) 13 



Sumatra. Type in the British Museum (Nat. Hist.). 



Host: Botys marginalis Warren on Ipomaea sp. and Spilanthes acmella. The 

 name of the host is possibly an error for the Pyralid, Psara marginalis Warren 

 (teste Wilkinson). 



The bicoloured 1st tergite and its strong, posterior constriction are characteristic 

 features of this species ; the ovipositor sheath is longer than in psarae but the two 

 species are otherwise very closely and naturally related. 



The VACILLATRIX-Grovp 



Key to Species 

 Females 



i Flagellar segments 6-7, and sometimes 8, whitish ; hypopygium as heavily 

 sclerotised along the middle line as elsewhere and not tightly folded here ; laterally 

 without longitudinal creases. Africa .... laurae de Saeger (p. 223) 



Flagellum never banded with white ; hypopygium thin, membranous and, in death, 

 tightly folded along the middle line ; along each side usually with numerous 

 longitudinal creases ........... 2 



z Mesoscutum entirely reddish-yellow ........ 3 



- Mesoscutum pale at most posteriorly and along the course of the notaulices . . 5 



3 Tergite 1 strongly narrowed behind, wedge-shaped ...... 4 



l2 Microgaster psarae Wilkinson, 1927 : 174. 



Hypomicrogaster psarae (Wilkinson) comb. n. 

 * 3 Microgaster botydis Wilkinson, 1930b : 281. 



Hypomicrogaster botydis (Wilkinson) comb. n. 



