RECLASSIFICATION OF MICROG ASTERIN I 229 



A . parasitellae to the vacillatrix-gvoup of Hypomicrogaster. The affinities of parasit- 

 ellae may truly be with suffolciensis and its resemblance to the mycetophilns-group 

 fortuitous and the result of a convergence that so far resists a convenient form of 

 taxonomic treatment. I confess that I have not been able to find a satisfactory 

 solution to the problem but feel, nevertheless, obliged to draw attention to it. 



Hypomicrogaster tiro (Reinhard) comb. n. 



Microgaster tiro Reinhard, 1880 : 357. 



$. This species seems to be closely related to suffolciensis differing from it by little more than 

 the characters given in the key. The form of the flagellum offers a striking diagnostic feature by 

 which the species can be instantly separated from the other species of the group. 



Gaster darkened above and at sides. Hind femur blackened with at most a pale flush along 

 each side. 



Tergite 1 is only slightly or hardly at all narrowed behind and in this respect the species again 

 differs from all the others (Text-fig. 284) ; the horizontal part of tergite 1 is strongly, evenly 

 rugose. 



Europe. Location of type doubtful. 



Host : Bred in England from the following species of Cnephasia (Tortricidae) : — 

 chrysanthemana Duponchel, pascuana Hiibner, virgaureana Treitschke (now inter- 

 jectana Haworth). 



The pale spot at the base of the stigma is a useful additional character for recognis- 

 ing this species. 



PROMICROGASTER Brues and Richardson 



Promicrogaster Brues and Richardson, 1913 : 499 ; Muesebeck, 1958 : 416. 

 Monobasic. 



I do not know the type-species and have based my concept of the genus on Muese- 

 beck's remarks about it and a paratype female of P. munda Muesebeck which he was 

 good enough to lend me for study. 



The genus is essentially neotropical and I am not at all sure that I am right in 

 including it in a small group of two species from Australia. 



Head often markedly subtriangular in a facial view, except in the Australian dissors-group. 

 Ocelli always in a higher triangle than in the neotropical species of Hypomicrogaster : Prono- 

 tum with a dorsal furrow. Areolet of the fore wing very small, the 2nd transverse cubitus 

 arising from the 1st transverse cubitus (Text-fig. 286). 



Key to Species-groups 



A Head in facial view slightly transverse ; mouth parts of ordinary form ; lateral, 

 polished field of scutellum only weakly convex in the forwards direction and hence 

 cutting off between itself and the disc of the scutellum a rugose tongue that narrows 

 behind (Text-fig. 287) ; edge of vannal lobe beyond its widest part very slightly con- 

 vex and here with a complete fringe of minute hairs. 



