31 



ly and densely punctured on dorsum, 2nd segment with short lon- 

 gitudinal striae at base, remaining segments smooth and shining. 

 Abdomen pubescent below. Antennae stout. Length 14 mm. 



^ , less ferruginous than $ ; face, scape of antennae, tegulae, 

 scutellum, and anterior tibiae and tarsi yellowish; eyes, antennae 

 except scape, a spot behind antennae, another including ocelli 

 (sometimes these are united), sutures of thorax broadly, petiole 

 below, broad band at base of second, third, fourth and fifth abdo- 

 minal segments, black; apex of hind, tibiae blackish. More pubes- 

 cent than female. Length 16 mm. 



This valuable parasite was introduced from America by 

 Mr. Koebele several years ago. The date of introduction is 

 not known ; but after becoming established the first record of 

 its appearance is a specimen taken by Ur. Perkins, in June, 

 1900. Since then it has become generally spread, and quite 

 common locally, usually the mos.t observed where there is an 

 abundance of army worms and cutworms. During 1905-1907, 

 I saw them quite abundant at several places on Hawaii, Maui 

 •and Oahu ; but so far, I .know of no records of its occurrence 

 on Kauai or Molokai. It was especially introduced to prey 

 u})on army worms and cutworms, and I do not know of it 

 attacking any other kind of caterpillar. 



Little is known of its life history, further than that the fe- 

 male parasite deposits her egg inside a living caterpillar; the 

 larva there lives upon the fluids and fat, not causing the death 

 of its host until after the latter has pupated; then the parasite 

 completes its growth and becomes a jjiipa Avithin the host pupa, 

 and in due time the adult parasite emerges therefrom. 



Specimens were submitted to Dr. Howard of the Bureau of 

 Entomology, Washington, for identification. He has kindly 

 compared them wath specimens in the U. S. National Museum, 

 and found that it is not contained there. He writes further 

 regarding it : "I then sent it to Mr. Viereck, who compared it 

 vrith the Philadelphia collection, and while, he says, it comes 

 near to Ichneumon hrevipennis, it is evidently distinct from 

 that species." Hence, it is apparently an undescribed species, 

 and I have herewith" described it, naming it for Mr. Koebele, 

 who has done so much valuable work for economic entomology 

 in Hawaii. 



