UNITED STATES 
DEPARTMENT OF AGRICULTURE 
MISCELLANEOUS PUBLICATION NO. 241 
Washington, D. C. July 1936 
THE GENERA OF PARASITIC WASPS OF THE 
BRACONID SUBFAMILY EUPHORINAE,! WITH 
A REVIEW OF THE NEARCTIC SPECIES 
By C. F. W. MuzseBEcK, principal entomologist, Division of Insect Identification, 
Bureau of Entomology and Plant Quarantine 
CONTENTS 
Page Page 
MATER OUCH O Meee ee ea ee ee 1 | The genus Myiocephalus Marshall___________ 21 
Synonymy of the subfamily Euphorinae__-_-_- 4 | The genus Syntretus Foerster___-..-._.--__-- 22 
Classification of the Euphorinae______-______ 5 | The genus Huphoriella Ashmead__-___._____- 25 
Key to the genera of Euphorinae_--__________ 5 | The genus Euphoriana Gahan. .___________-_ 27 
The genus Aridelus Marshall_.-_-.-_.______- 6 | The genus Huphorus Nees___...-.---_--_---_ 28 
The genus Meteorus Haliday-...____--_-____- 8 | Genera of Euphorinae that have not been 
The genus Cryptorilos Viereck____-_________- 9 TECOGMIZCG=* oe te EE Lee ee ee 33 
The genus Centistina Enderlein________._____ 10 | Genera incorrectly placed in the Euphorinae_ 34 
The genus Hustalocerus Foerster____________- 10 | Nearctic species wrongly classified as Eupho- 
athersents PerilitsswNecsa ea ee il TTA Ses eg he 0 a oe ee ng 35 
The genus Streblocera Westwood____________- 13j=\|plaiteraturercited c= elas ae teen. Seema 36 
The genus Microctonus Wesmael__________-- abe Gaallid} at 0 (spice vepapaens ec a ae eee RS 37 
The genus Wesmaelia Foerster__...__.-___-_- 20 
INTRODUCTION 
Owing to the lack of a satisfactory classification of the braconid 
subfamily EKuphorinae, the correct identification of forms falling in 
this group and their proper generic placement have been attended 
with much difficulty. Requests for such identifications persuaded 
the writer to undertake a generic revision of the subfamily, especially 
since he had had the privilege several years ago of studying pertinent 
material in the collections of certain ‘European institutions. These 
collections, together with that of the United States National Mu- 
seum, contain the types of most of the genera involved. 
From the standpoint of host associations the group is an especially 
interesting one, even though no definite information is as yet available 
concerning the kinds of hosts attacked by any species of several of 
the genera, including Streblocera Westwood, Wesmaelia Foerster, 
Myiocephalus Marshall, and Syntretus Foerster. 
Meteorus Haliday is the largest and best-known genus of the 
subfamily and contains a number of species that are of appreciable 
economic importance in the control of certain injurious insects. 
Most of the species the habits and biology of which have been in- 
vestigated are internal parasites of lepidopterous larvae, as, for ex- 
ample, vulgaris (Cresson) (figs. 1, A; 2, #), a common gregarious 
parasite of cutworms; hyphantriae Riley, an abundant polyphagous 
1 Order Hymenoptera, superfamily Ichneumonoidea. 
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