1900] ENTOMOLOGICAL NEWS. 491 



stages, is not visible in newly-hatched specimens. None of the 

 abdominal segments bear nipple-like spiracles. The skin is 

 covered with fine spinules. When ready to pupate the larva 

 usually spins a thin oval cocoon. Sometimes it does not. The 

 larvae pupate within the deformed buds. The duration of the 

 larval stage is ten or eleven months. 



The pupae (fig. i, p) are of the same general color as the 

 larvae, the thoracic region of the body being darker. The 

 body is covered with cuticular spinules as in the larva. The 

 breathing-tubes are non-segmented and are slightly folded 

 over at the top. The duration of the pupal stage is three or 

 four weeks. 



Adult. 



Diplosis pini-radiatae n. sp. 



Male (fig. 2). Antennae slender, a little shorter than the body, yellow 

 or brownish yellow, the basal and terminal joint darker ; basal joint large ; 

 second joint smaller, more globular, sessile ; remainder of antennae with 

 twenty-four spheroidal dilatations, the terminal one more conical, and with 

 a suture separating the minute terminal joint ; petioles slender, about as 

 long as the dilatations proximally, proportionally a little longer distally ; 

 the swellings decrease in size uniformly and gently, each with a verticil of 

 black hair and a circle of shorter, yellowish looped filiments more dis- 

 tally. Head deep brown or black. Mesonotum dark reddish brown or 

 blackish, somewhat whitish pruinose, and with three rows of dusky hairs. 

 Pleurae above, and the scutellum reddish. Abdomen obscurely reddish 

 brown or black, with rather long, blackish hairs. Legs yellow or yel- 

 lowish, with close-lying, for the most part, black hairs, and longer, 

 chiefly white hairs, especially upon the tibiae and tarsi ; tip of tibiae and tarsi 

 usually brownish. Wings greyish hyaline, with blackish hairs along the 

 costa, and a fringe of longer dark hairs along the posterior margin. The 

 first vein terminates near the middle, the third at the extreme tip of the 

 wing, the latter strongly convex ; origin of third vein indistinct ; wings 

 rather slender. 



Female (fig. 3. ). Basal joints of antennae as in the male, the twelve dila- 

 tations are more elongate cylindrical, the petioles much shorter; the 

 dilatations are more slender distally and show here slight constrictions. 

 Mesonotum usually less deeply colored, the upper part of the pleurae and 

 ihe scutellum yellow or yellowish. Abdomen red, the basal segments 

 above obscurely marked with brown or black hair, loose, abundant and 

 long ; ovipositor usually protruding about as far as the length of the 

 body. 



Five males and five females, No 232, Leland Standford University, 

 June, 1899. 



