THE COWPEA CURCULIO. 145 



tion I quote from a letter from Mr. C. H. T. Townsend dealing with 

 this species : 



I have just dissected a fresh specimen of Ennyomma globosa [ Myiophasia senea], col- 

 lected here to-day. It is the species you bred from C. xheus. The specimens you 

 gave me showed only ova in the egg tubes — undeveloped because no copulation had 

 taken place. This fresh specimen contained many very slender, elongate — unusually 

 elongate — eggs containing developing maggots. They are tapering at both ends. If 

 the fly deposits eggs, the eggs must hatch in a very short time. It is possible that the 

 eggs hatch in the uterus, and that the fly deposits living maggots. What light this 

 throws on the habits I can hardly say. Is it possible that the fly deposits eggs in the 

 weevil puncture and that the weevil eggs hatch first? Or can it be possible that the 

 fly deposits a maggot that waits till the weevil egg hatches? I can not believe that the 

 weevil egg can be entered by the maggot and still develop with the maggot inside. 

 * * * These Ennyomma eggs are so minute that they can hardly be seen with the 

 naked eye. * * * After thinking the matter over further, it seems likely to me that 

 the flies deposit living maggots in weevil punctures of a certain age, and that these 

 minute, spindlelike maggots bore into the old weevil puncture and follow the hatched 

 weevil larva. The female fly has no pierc- 

 ing ovipositor. Everything points to the 

 deposition of living maggots. 



Two other species of parasites, 

 both hymenopterous, one a Eupel- 

 mus and the other a eurytomid, and 

 both probably undescribed, as I am 

 informed by Prof. F. M. Webster, 

 have been reared from the larvae of 

 this beetle at Clemson College, S. C. 

 Individuals of both of these species ~,„ Rn ,, . , . .*».«. 



r Fig. 69.—Myioplia$ia senea, a parasite of the 



appeared On the cloth Covering of jars cowpea curculio: Adult male and head of 



containing cowpea pods, so nothing female ' Enlarged " ( 0ri s inal -> 

 more is known of their life history than that they pupate in and 

 emerge directly from the pod. During the fall of 1909 one such 

 hymenopterous pupa was found in the cavity made in a pea by a 

 curculio larva, beside the remains of the larva itself, but it was not 

 reared, and so to which one of the species mentioned above this indi- 

 vidual belonged is not known. A female of one of these species was 

 observed in the act of ovipositing in a cowpea pod on August 27, 

 1908. She thrust her ovipositor through the tissue of the pea, and 

 as the other species has also a piercing ovipositor it is probable that 

 both place their eggs directly in the body of the half-grown larva 

 within the pea. 



In 1894 Dr. L. O. Howard recorded Ennyomma clistoides [Myio- 

 phasia senea] and Sigalphus sp. as having been reared by Prof. H. A. 

 Morgan from Chalcodermus eeneus at Baton Rouge, La. These same 

 rearings are again reported by Mr. W. D. Pierce in the Journal of 

 Economic Entomology. 



