THE GENUS MONODONTOMERUS — GAHAN 479 



C. R. Kellogg at Foocliow, China, in 1928. Besides this Old World 

 material the collection contains several large series, comprising ov^er 

 300 specimens, mostly reared from Diprion simile (Hartig) in Maine, 

 Connecticut, New York, New Jersey, Pennsjivania, Alichigan, Ohio, 

 and Ontario, Canada. 



Monodontomerus dentipes was originally proposed in the genus 

 Torymus by Dalman accompanied by a vcjy short description, which, 

 so far as it goes, fits the present species. Dalman's specimens were 

 subsequently more fully described by Boheman, and the species has 

 most frequently been credited to that author but should be credited to 

 Dalman. 



In European literature Alonodontomenis dentipes has been recorded 

 as parasitizing several different species of sawflies and a number of 

 species of Lepidoptera and in other instances as secondarily parasitic 

 through species of Braconidae, Ichneumonidae, Chalcididae, and 

 Tachinidae. It is probable, however, that not all these records refer 

 to the true dentipes. Dalla Torre ^ has listed dentipes as identified by 

 Alayr as a synonym of lirens Thomson, and Hofl'myer^ has indicated 

 the same synonymy. 



In the United States National Museum is one female specimen identi- 

 fied as dentipes by Mayr and another identified by Ruschka. These 

 two specimens differ from dentipes as here treated by having the groove 

 setting off the marginal carina or frenum on the scutellum distinctly 

 interrupted at the apex of the scutellum, by having the first tergite 

 perfectl}^ smooth and sculptureless, b}^ the tooth on hind femur being 

 distinctly longer, slenderer, and farther from the apex of the femur, 

 and by having the ovipositer very nearly as long as the abdomen. 

 The}^ disagree with the description of virens by having a strong median 

 carina on the postscutellum and in having the marginal groove on 

 the scutellum interrupted. A third specimen of what is evidently 

 the same form is in the collection. This was taken in Hungary by 

 C. Sajo and bears the name label Monodontomerus ohsoletus (Fabri- 

 cius). It is apparently not ohsoletus, however, since the median de- 

 pression on the propodeum is narrower and more acute posteriorly. 

 The funicle joints are all a little longer than broad, the tooth on the 

 posterior femur is longer and more slender, and the general color 

 is slightl}^ more greenish than in that species. It is impossible at 

 the present time to identify this form positively and it is discussed 

 here merely to show the probable confusion existing regarding some of 

 the European species. 



* Catalogus hymenopterorum, vol. 5, p. 290, 1898. 



• Ent. Med , vol. 17, p. 258. 1930. 



