102 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Bracon (Habrobracon) hebetor Chittenden, U. S. Dept. Agr. Bur. Ent. 

 Bui. No. 8 (n.s.), 1897, pp. 38-40. Suggests possibility, according to 

 Ashmead. of synonymy with brcricornis. Hosts. Ephestia cahiritella, 

 Gallt-ria mellonella. 



Bracon juglandis Chittenden, loc. cit. Referred to as variety of 

 hebetor. Hosts. Ephestia cahiritella, Plodia inter punctella. 



Habiobracon hebetor Buchwald & Berliner, Zeitschr. f. d. gesamte 

 Getriedewesen, II, 1910, pp. 1-4, figs. 1 and 2. Host Ephestia 

 kuehniella. 



Specimens in the National Museum determined by Ashmead 

 and others as hebetor Say and juglandis Ashm. agree with Marshall's 

 description of brevicornis Wesm. and are identical with a specimen 

 from Europe determined by Schmiedeknecht as brevicornis. Chit- 

 tenden (Bur. Ent. Bui. 8, p. 39) suggests, on the authority of Ash- 

 mead, that these two species are synonyms of brevicornis Wesm., 

 All of the reared specimens of hebetor and juglandis in the col- 

 lection are reared from hosts that breed in stored products of 

 various sorts, principally from various species of the genus 

 Ephestia. This seems to be the normal host of the species as well 

 as of brevicornis in Europe. All the specimens in the National 

 Museum that can be construed as agreeing otherwise with hebe- 

 tor Say differ from the original description of that species in 

 having the coxa? largely black not "yellowish-white." Further- 

 more, Say makes no mention of the black occipital spot which 

 appears in all dark specimens. In the description of Bracon 

 dorsator on the page following that of hebetor, Say observes that 

 dorsator agrees with hebetor in that "the first cubital cellule is 

 wider by one-third than the second at their junction." In all 

 the specimens in the National Museum this difference is at least 

 one-half and usually more. It seems from these facts that the 

 specimens reared from such hosts as those mentioned above 

 are not the hebetor of Say. Such being the case the hebetor of 

 authors must sink into synonymy \vith brevicornis Wesm., while 

 the hebetor of Say must stand as an unknown species. 



Specimens of this species in the National Museum, in addi- 

 tion to those which agree with Marshall's description of the 

 species, show variations of practically all grades from those 

 in which the dorsum of the thorax and abdomen is entirely black 

 except the apical tergite and faint traces of the thoracic markings, 

 and the ocellar and occipital spots narrowly joined, to those in 

 which the color is largely yellowish without the typical spots on 

 the head, the dark color of the mesonotum reduced to three small 

 spots and the abdomen nearly uniformly pale. In some specimens 

 the head is practically all black with only faint indications of 

 the color pattern. The number of antennal joints in females 



