71 



this time only al)out one-fourth grown, and it was somewhat surpris- 

 ing to tind that a parasite issued from it in a few days and spun up its 

 cocoon June 18. The adult parasite issued June 26. 



Copidosoma truncatella Dalm. — A Prodenia larva of this species 

 found on tomato September 20, 1900, was noticed to be infested with 

 this minute Chalcidid, which issued later. 



REMEDIES. 



The remedies are the same as for the variegated cutworm and 

 similar species. 



THE EUDIOPTA OWLET MOTH. 



{Prodenia eudiopta Guen. ) 



The moth of this species, until recently labeled in collections Pro- 

 denlajl(iv'nnedi(i Harv., is nearly as often met with in the District of 

 Columbia as the two preceding species, but until the past year the 

 larva does not appear to have been so often observed attacking useful 

 plants. It has not yet been identified with attack upon violet, but 

 since it is so closely related to the other two Prodenias, and especially 

 to ornithogalli Guen., from which indeed it can sonietimes be separated 

 only with difficult3% it mav appropriately be considered in connection 

 with the other two forms mentioned. During the year 1900 larvae 

 were several times taken on tomato, into the fruit of which they some- 

 times bore after the manner of the boll worm. 



DESCRIPTIVE. 



The viotli. — The closeness with which this species approximates 

 ornitliogaUl is such that it leads to the suspicion that they may be only 

 dimorphic forms of the same species, a matter which could perhaps be 

 satisfactorily determined one way or the other by rearing from the egg", 

 an experiment which we hope to perform the coming season. ^ The dif- 

 ferences, indeed, are much less striking than are those of the two com- 

 mon forms of Ij(plnj(jma fruglj^erda. The most striking chai'acter is 

 the brighter coloration of the fore-wings, the ground color of which is 

 more or less ochreous. The body is lighter, with an ochreous tint 

 particularly marked at the tufted extremity. The apex of the fore- 

 wing is well marked with whitish, as is also a little area about the 

 tornus. The oblique band which crosses the fore-wings from near the 

 middle of the costa toward the tornus is wider and pale 5'ellowish, and 

 the space between this and the dorsum is variegated pale brown. The 

 size is about the same as ornitJwgalU. 



This moth is shown at figure 3, c/, of Plate IV. 



As to the validity of this species it maj^ not be out of phice to quote 

 the language of Professor Riley in discussing these three species. 



'This rearing has since l)een made, Ijoth forms developiiitr from a siii^h^ t-iiL' masa. 

 See Appendix. 



