138 g. e. j. nixon 



The PISTRINARIAE-Grov? 

 Monobasic. 



Apanteles pistrinariae Wilkinson 

 Apanteles pistrinariae Wilkinson, 1929c : 443. 



This species is remarkable because of the medial constriction of the plate of tergite 

 1 (Text-fig. 113). The hypopygium is large, strongly developed and clothed with 

 long bristle-like hairs (Text-fig. 113). 



Africa : Nigeria (type locality) ; Nyasaland ; Eritrea. 

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



Host : A gregarious parasite of Mylothris Moris F. (Pieridae). 



I consider this species to have a close affinity with the glonieratus-group. 



The SIDERION-Grovp 



The characters of this group have been summed up in couplets 29 and 30 of the 

 key (p. 22). The dense fringe of hairs on the inner side of the apical margin of the 

 hind tibia needs to be looked for carefully. In certain lights the hairs making up the 

 fringe are faintly iridescent. 



Key to Species 

 Females 



1 Hind coxa dark brown ; median field of tergite 2 very narrow with its base distinctly 



shorter than its sides ; this tergite whitish except for a small, brown, wedge-shaped 

 mark against each side of the median field. 



Antenna not at all thickened towards apex ; segment 15 discontinuously longer 

 than 1 6 and fully twice as long as wide ; face rather strongly punctate ; mesoscutum 

 strongly sharply punctate, the punctures well separated and larger than in the other 

 species ; scutellar disc more convex than in the other species, its extreme posterior 

 tip raised as seen in profile ; the furrow between scutellum and mesoscutum deeper 

 and more strongly costate than in the other species ; transverse keel of propodeum 

 situated far anterior to middle, forking laterally to enclose the spiracle ; posterior to 

 the transverse keel, the propodeum shows much coarse rugosity ; front and middle 

 coxae whitish ; hind tibia darker than the reddish flushed femur and like the hind 

 tarsus, almost blackish ; middle and front femur yellow ; temples with sharp, 

 distinct punctation. Length: ca. 2-6 mm. .... sagma ria sp. n. 



Philippines: Mdro. Or., Mt. Halcon, 3,100 ft., 10. v. 1954, : ?> the TYPE ; 4,500 

 ft., 11. v. 1954, J 6*. Negros, Mt. Canalaon, 4,700 ft., i.v.1953, r 6\ (M. & D.Townes). 

 Type in Coll. Townes. 



- Hind coxa entirely yellow ; median field of tergite 2 less narrow, its base fully as long 



as its sides ; temples smooth-looking, with only faintly indicated punctation ; 

 tergite 2 more extensively darkened ........ 2 



2 Tergite 1 with sides constricted beyond widest part so that posteriorly it appears almost 



stalked (Text-fig. 134) ; median field of tergite 2 very distinctly triangular . . 3 



- Tergite 1 lacking this constricted appearance and gradually narrowed from base to 



apex ; median field of tergite 2 subrectangular (Text-fig. 132). 



