Matsumura : New Species amd Genera of CAi,LiPTERi>fAK (Aphididae) of Japan 



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stigma at the periphery somewhat suTused; .2nd furcal rather nearer to the base 

 of the first. Cornicles ilistinctly longer than wide, Cauda rounded, with a few fine 

 hairs. Legs rather long, tarsi except the bases infuscated. 



Length — 1.7 mm.; exp. tegm. 5.8-6 mm.; antennae 2.1 mm. 

 Nymph — Differs from the winged viviparous female in having much 

 paler body, long spatulate bristles on the frons and over all parts of 

 the body, especially on the lateral sides of the abdomen, small wing- 

 sheaths, which being somewhat suffused at the costa and reaching 

 beyond the posterior coxae, and shorter cornicles and cauda. 

 Length — 1.5 mm.; antennae 1.6 mm. 



Hab. — Hokkaido (Sapporo) ; many specimens collected by the author. 

 F. P. — Quercns grosseserrata (Misnuara). 

 Dtite of Coll. — June 17, 1917. 

 No.n. Jap. — Mara-biichiabiira. 



2. Mesocallis n. g. 



Allied to Myzocallis Pass., but differs from the latter as follows: — 

 Body slenderer. Rostrum longer, reaching far beyond the first coxae. An- 

 tennae inuch shorter than the body, the 6th joint scarcely shorter than the 5th, 

 anterhinarial subequal to the postrhinarial, the 4th, 5th and 6th scarcely imbricat- 

 ed, the 3rd with one row of oblong sensoria along the whole surface. Primaries 

 narrower, stigma lanceolate, not angulatetl below, lacking any trace of the stigma- 

 tic vein. Empodial hairs distinctly longer than the claws. 

 Genotype — Myr:ocallis sazvashibae Mats. 



4. Mesocallis pteleae " sp. 



Body pale yellowish. Rostrum at the apex infuscated. Antennae except 2 

 basal joints whitish, the 3rd, apices of the 4th, as well as the postrhinarial of the 

 6th, fuscous; the 3rd joint with about 1 3 sensoria. Wings hyaline, veins and stigma 

 pale yellowish, the first and 3rd obliques at the bases infuscated, the 2nd furcal 

 near the middle of the first. Apex of the rostrum, as well as the tarsi, infuscated. 

 Cornicles somewhat longer than wide, with the cauda concolorous with the body, 

 rarely the latter being somewhat infuscated. Empodial hair conical at the apex. 

 Length — 1.2-1.3 mm.; antennae 0.8 nmi.; exp. tegm. 3.5-4.5 mm. 



