August, '12] FELT: ITONIDA INOPIS 369 



pine resemble each other and may warrant segregation in a genus 

 l)y themselves. 



Description. (!aU. Loii^th 7 imn., a more or less distinct, suhcorticul swelling 

 containing an irregularly oval chamber some 4 mm. long and 3 mm. in diameter. 

 These swellings are frequently indicated by more or less exuding i)itf'h. 



Egg. Length 0.5 mm., narrowly oval, reddish orange. 



Larva. Length 3 mm., reddish orange, moderately stout t^nd with a series of sub- 

 dorsal and lateral, conical, fleshy processes, the latter bearing moderately stout 

 spines. On the posterior segment these processes seem to be fused and there appear 

 to be a pair of submedian, lobelike processes, each bearing apically a heavy, chitinous, 

 subconical .structure suj^porting the spiracle, the latter being further protected by 

 four short, stout, frngerlike processes. The head is small, tapering and remarkable 

 because of the gi-eatly produced, diverging processes at the latero-posterio angles; 

 breastbone indistinct. The skin is coarsely shagreened. 



Cocoon. Length 2.75 mm., diameter L5 mm., irregularly oval, whitish or yellow- 

 ish white, becoming fuscous with the development of the insect and sometimes 

 irregularly fluted; the anterior extremity is ii-regularly pointed, the insect escaping 

 by forcing off a conical lid. The cocoons are attached by the side to the needles, 

 to the developing shoots and occasionally to the twig. 



Exuviuin. Length 3 mm., the head and thorax and their appendages distinctly 

 though variably fuscous, the abdomen semitransparent. The pupa, when escaping 

 from the cocoon, emerges so as to expose only the fuscous portion of the exoivium. 

 Antennae short, stout, hardly extending to the base of the abdomen, the wing covers 

 to the third abdominal segment, the legs to the 6th and 7th abdominal segments. 



Male. Length 2.25 mm. Antennae about as long as the body, sparsely hau-ed, 

 reddish brown; 14 segments, the fifth having the stems 1-2 and as long as their diame- 

 ters, respectively. Distal enlargement nearly subcylindric, with a length 1-4 greater 

 than its diameter, the circumfili moderately short, stout and with numerous loops. 

 Terminal segment; distal enlargement produced, with a length 2 1-2 times its diame- 

 ter, a constriction near the middle and. an irregular, stout process apically. Palpi; 

 first and second segments short, stout, irregular, the third with a length fom- times 

 its diameter, moderately stout, the fourth 1-4 longer than the third, slightly dilated. 

 Mesonotum dark brown, the submedian lines short, silver haired. Scutellum reddish 

 brown, postscutellum dark brown. Abdomen dark reddish brown, the genitalia 

 with a reddish cast. Wings hyaline, costa reddish brown. Halteres reddish brown, 

 yellowish basally. Coxae reddish brown, the legs mostly a pale straw, the tarsi 

 slightly darker. Claws moderately stout, slightly curved, simple, the pulvilli longer 

 than the claws. Genitalia; basal clasp segment stout; terminal clasp segment short, 

 swollen basally; dorsal plate short, very broadly and triangularly emarginate; ventral 

 plate moderately long, broad and triangularly emarginate; style short, stout, broadly 

 rounded. 



Female. Length 3 mm. Antennae extending to the third abdominal segment, 

 sparsely hau-ed, reddish brown ; 14 segments. The fifth having the stem 1-4 the length 

 of the cylindric basal enlargement, which latter has a length 2 1-2 times its diameter. 

 Circumfih moderately high, stout; terminal segment shghtly produced, with a length 

 thrice its diameter, with an irregular, broad knob apically. Abdomen reddish brown, 

 the ovipositor about half the length of the body, fuscous yellowish, the terminal 

 lobes lanceolate, with a length over four times the width, sparsely haired," legs mostly 

 reddish brown, otherwise nearly as in the male. Ceci^ a2284, 



