212 THE CANADIAN ENTOMOLOGIST. 



which is less common than gallivSra; it is a perfectly distinct species 

 and apparently undescribed ; hence I propose to describe it under the 

 name given above. One male and one female obtained. Female. — Fore- 

 wings purple black, with red scales between the veins and the square 

 stigma at end of cell red ; borders of hindwings very narrow, costa 

 reddish ; fringes ample, black, yellow at basal third of inner margin of 

 hind pair • beneath forewings yellow to stigma, which is deep orange, 

 beyond the borders and veins black with reddish between ; hindwings 

 with costa yellow, also anterior third of inner margin. Head all blue- 

 black, with milk-white lines before the eyes ; collar yellow ; palpi with 

 basal joint black, second black except the front margin, which is yellow, 

 as is the whole of the third joint ; the antennae are wholly black, except 

 the under side of the basal ring which is yellow. Thorax uniform blue- 

 black, with colour extending upon the base of wings ; metathorax golden 

 yellow ; beneath colour as above, with a light yellow almost white spot 

 under the insertion of the wings. Abdomen concolorous with thorax above 

 and below ; the second segment has a narrow dorsal band, the fourth a 

 wide one, extending entirely around the body, and the last a narrow band 

 all golden-yellow ; tuft at end of abdomen concolorous above and below 

 with a line of yellow hairs laterally. Legs blue-black, varied as follows : 

 Fore-coxae, outwardly, fore-tibise, all the tarsi, the spurs and a band at the 

 middle and apex of the hind tibiae yellow ; the tarsi, however, have some 

 dark, scales sometimes appearing faintly banded. 



The male agrees with the foregoing except that the abdominal bands 

 are less distinct and the yellow in the caudal is wanting. 



Expands 17 mm. 



Obtained from Cynips gall on twigs of Qiiercus palustris, collected 

 l)y my friend, E. E. Bogue, at Sugar Grove, Ohio, and by myself at 

 Central College, Ohio. One imago appeared June 10 and one July 15. 



The pupa has the usual form, length 12 mm., armed, clypeal spine 

 flattened to a cutting edge apically ; there is a median ridge on the 

 dorsum of mesothorax and on either side of it a parallel grove. 



The pupa cell is excavated in the pithy substance of the gall and 

 lined with silk. 



This moth should be compared sufficiently for separation with other 

 species from Quercus galls. It differs from Ilospes and Gallivora as follows: 

 Front blue-black, whilst they have front white : legs black \ they have legs 

 yellow : palpi black and yellow ; they all yellow with mere tip black. 

 Rubristigma has red bar ; they black. Compared with Aegeria querci 

 trom galls on live oak it is twice as large. Querci has lemon-yellow lines 

 on side of thorax, antennae brown, yellowish beneath ; has nearly all the 

 abdominal rings with bands costa lemon-yellow beneath, leg-jomts whitish, 

 pectus lemon-yellow ; in all these points Rubristigma differs decidedly. 

 The differences are also as striking with Nicotiance, with which Henry 

 Edwards compared Querci, a species having a fiery-red discal mark. 



