NEW PARASITIC HYMENOPTERA OF THE GENUS 

 EIPHOSOI^U. 



By T. D. A. COCKERELL, 



Of the University of Colorado, Boulder. 



The genus Eiphosoma consists of Ophionine Ichneumonidse in 

 which the stigma is elongate, the abdomen long and slender, and the 

 hind femora toothed. It is a characteristic member of the Neotrop- 

 ical fauna, but Brues has recorded E. septentrionale from as far north 

 as Pennsylvania. A species collected last year by my wife in Guate- 

 mala is found on examination to be new, and when comparing it with 

 the material in the United States National Museum I have found 

 three other species to be described. Brues ^ has given a table of the 

 species occurring in North and Central America ; with the new species 

 added, this table may be modified as follows. I omit E. -pyralidis 

 Ashmead, which is the type of a distinct genus BracMxiphosoma 

 Viereck. This B. pyralidis is a characteristic member of the Nearctic 

 fauna, having been described from Missouri, and being represented in 

 the National Museum from Agricultural College, Michigan (A. J. 

 Cook), Nyack, New York (Zabriskie), and Ithaca, New York. 



Metathorax with only a median black line or band',^ the suture bounding it ante- 

 riorly often black, this black sometimes widened laterally, forming a clavi- 

 form spot 1 



Metathorax with lateral black markings, not connected with the anterior suture. . 7 



1. Mesopleura with a black spot or oblique line or band 2 



Mesopleura entirely yellow, areolet present 6 



2. Posterior tibiae entirely honey yellow; areolet wanting nigrovittatum CreBson. 



Posterior tibiae largely black 3 



3. Wings broadly fuliginous at apex; areolet absent schwarzi, new species. 



Wings hyaline at apex, or with a faint cloud ; areolet present 4 



4. Wingsmilky;areolet very minute, not longer than its petiole Jacieum, new species. 

 Wings not milky 5 



5. Length about 12 mm. ; wings somewhat dusky at tip; species of Pennsylvania. 



septentrionale Brues. 

 Much larger; wings wholly clear; species of Mexico and Central America. 



mexicanum Creseon. 



1 Psyche, vol. 18, p. 21. 



2 Acotypeof E. mexicanum in theU. S. National Museum has minute black spots on extreme lateral mar- 

 gins, so I have placed this species under both categories. According to Cameron it is variable and widely 

 distributed. 



Proceedings U. S. National Museum, Vol. 46— No. 2010. 



