74 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



Genus Leucaspis Sign. 

 52. Leucaspis japonica Ckll. 



Leucaspis japonica Cockerell, Psyche, Vol. VIII, 1897, p. 53. Craw, 

 Rept. Calif. State Bd. Hort., 1897-98, p. iii. 



This species was found by the author on apple-trees in 

 Sendai, and Sapporo, on maple and Pceonia moutan (Botan) 

 in Hirosaki, and on the same host in Yokohama. A. Craw, 

 San Francisco, had already recorded it on broom, Magnolia 

 souleana, and Acer sp, from Japan. It is extremely numer- 

 ous in Sapporo, and no doubt is injurious to the fruit trees 

 also. 



53. Leucaspis bambusae, sp. nov. 



Plate XIII, Figs. 75-81. 



Scale of Female.— Length usually 2 to 3 mm. ; nearly parallel-sided, straight, 

 though sometimes curved, gradually broadened posteriorly; convex, and 

 moderately thick in texture; color snow-white; exuviae about i. mm. long; 

 first skin light brown, elliptical; second, slightly darker. 



Female.— Body very slender, narrower toward anterior end and broader 

 toward posterior end. Abdominal segments distinct. The last segment is 

 yellowish and presents the following characters: — 



There are five groups of spinnerets. The anterior group contains five, the 

 anterior laterals nine to eleven, and the posterior lateral seven to nine. There 

 are two pairs of well developed and conspicuous lobes; those of the median 

 pair parallel with each other, each one being furnished with a notch on each 

 side; second pair flat, each lobe being divided into two nearly equal lobules, 

 the larger of which is mesal, each lobule being furnished with a notch on each 

 side. Plates shorter than the lobes, but very distinct, forked at the tip; two 

 between median lobes, one between median and second lobes, three between 

 second lobe and gland spine. Gland spines are prominent; formula, i, i, 2—3. 

 First spine on the lateral margin of the median lobe, second spine at the 

 middle of the margin of the second lobe, and third spine on the margin lat- 

 erad of the second lobe. 



Newly Hatched Larva. — Length .3 mm., width .11 mm.; elliptical; pale in 

 color; distinctly segmented. Mouth-parts large; rostral loop long. Antennae 

 and legs well developed. Antennae six-segmented; formula, 3, 6(1, 2, 4, 3); 

 segment 3 much the longest. Three pairs of legs subequal; femur very 

 broad; tarsus short. Caudal end of body with two long hairs. 



This species was found by the author on bamboo, in 

 Kokura, Kiushiu. 



Type in the Entomological Collection of Leland Stanford 

 Jr. University, and co-types in the author's collection. 



