May, 1902] 



PSYCHE. 



345 



traces of whitish subdorsal and lateral lines, 

 the posterior parts of segments annulate and 

 grayer; subventral fold pale with black 

 dashes above anteriorly on the segments ;. 

 venter with several irregular, geminate, 

 crinkled, hiack lines, subtesselate blotched 

 posteriorly on the segments ; whitish orange 

 shading at the spiracle especially on joints 5 

 and 6. Feet gray; spiracles black rimmed ; 



setae normal, short, ia to ib separate, iv stig- 

 matal posterior, vii of three in a triangle 

 subventrally, not much scattered. Cocoon 

 a fairly close web of brown silk. 



Food plant. The larvae were fed on wild 

 cherry. 



Eggs from a ? taken at Pine Grove, Col- 

 orado. Eggs July loth, mature larvae August 

 loth, the moth again August 20th. 



A NEW CATOLACCUS ON SITOTROGA CEREALELLA OLIV. 



BY WILLIAM H. ASHMEAD, WASHINGTON, D. C. 



The following new Pteromalid was bred at 

 the U. S. Department of Agriculture from 

 infested specimens of Sitotroga cerealella 

 Oliv., taken by Mr. Dunwoody, in Philadel- 

 phia. 



Catolaccus cerealellae, sp. nov. 



5 . — Length 2 to 2.5 mm. Metallic bronze 

 green, closely punctate and sparsely pubes- 

 cent. The abdomen is conic-ovate and usually 

 but not always a little longer than the head 

 and thorax united the two or three basal seg- 

 ments tinged with cupreous, the segments 

 subequal in length with some very delicate 

 transverse aciculations. 



The legs are metallic green, the knees, tibiae 

 and tarsi, except tlie l^st joint, the scape of 

 the antennae and the labial palpi being honey- 

 yellow; the maxillary palpi and the rest of 

 the antennae are dark fuscous ; the flagellum 

 is very slightly and gradually thickened 

 towards apex, the ring-joints annular, the 

 first joint of funicle being usually a little long- 



er than the pedicel or as long, the following 

 joints very gradually shortening to the club, 

 the last being obtrapezoidal in outline, a little 

 wider at base than at apex ; the joints of the 

 club, or at least the first two, are wider than 

 long. The head is transverse, wider than the 

 thorax or about 34 times as wide as thick 

 antero-posteriorly, thinnest at the middle. 

 Wings hyaline, the veins light-brown or 

 brownish yellow. The metathorax is im- 

 pressed on each side posteriorly with usually 

 a short delicate median carina on the middle 

 lobe at base. 



The male measures scarcely 2 mm. in 

 length, bronzed black, the flagellum being 

 filiform and densely' hairy, while the abdomen 

 has a yellow median spot basally and is 

 oblong-oval, not pointed at apex. 



Type.— Cat. No. 61 15, U. S. N. M. 



llab. — Philadelphia. 



Host. — Lepid. Sitotroga ceiealella Oliv. 



