Mesostoinae

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Hymenopterida
Ordo: Hymenoptera
Subordo: Apocrita
Superfamilia: Ichneumonoidea

Familia: Braconidae
Subfamilia: Mesostoinae
Genera: Mesostoa
Name

Mesostoinae van Achterberg, 1975
Synonyms

Praonopterinae Tobias, 1988

References

Achterberg, C., van 1975: A new genus, Mesostoa gen. nov. from W. Australia, belonging to a new subfamily (Hymenoptera, Braconidae). Entomologische Berichten, 35(10): 158–160.
Austin, A.D.; Dangerfield, P.C. 1998: Biology of Mesostoa kerri (Insecta: Hymenoptera: Braconidae: Mesostoinae), an endemic Australian wasp that causes stem galls on Banksia marginata. Australian journal of botany, 46: 559–569. DOI: 10.1071/BT97042
Quicke, D.L.J.; Huddleston, T. 1989: The Australian braconid wasp subfamily Mesostoinae (Hymenoptera: Braconidae) with the description of a new species of Mesostoa. Journal of natural history, 23: 1309–1317. DOI: 10.1080/00222938900770691
Tobias, V.I. 1988: A new subfamily of braconids (Hymenoptera, Braconidae) from Australia. Entomologicheskoe obozrenie, 67(3): 644–648.

The Mesostoinae is a subfamily of wasps endemic to Australia.It contains four genera:

Andesipolis
Hydrangeocola
Mesostoa
Proavga

The members of this family display sexual dimorphism, males are brachypterous, which means that they have reduced, non-functional wings. A unique feature of this subfamily is that all the known species are primary gall formers on Banksia.
References

Australian Faunal Directory[permanent dead link]
Austin, A.D. & Dangerfield, P.C. (1998). Biology of the Mesostoa kerri Austin and Wharton (Insecta: Hymenoptera: Braconidae: Mesostoinae), an endemic Australian wasp that causes stem galls on Banksia marginata Cav. Aust. J. Bot. 46: 559-569