184 MISC, PUBLICATION 4 2 4, U. S. DEPT. OF AGRICULTURE 



Thorax : Bar between wing bases nearly rectangular, nearly three times as 

 long as wide, with a longitudinal fold in center ; tibia as long as tarsus. 



Abdomen : Five segments each with a seta dorsally on lateral margin ; 3 seg- 

 ments each with a seta in ventral lateral area ; lobes indicated, each with 1 long 

 and 2 short setae ; penis sheath with 2 minute setae dorsally near base, and with 

 6-9 setae on each side of ventral opening. 



Male nymph. — Distinguishing characters similar to those of adult male. 



Third-stage male. — Elongate elliptical; margin with quinquelocular pores 

 slightly less numerous than in adult female ; ventral surface with 4 or 7 quinque- 

 locular pores in each spiracular row, submarginal disk pores not observed, legs 

 represented by 3 pairs of circular, slightly sclerotized, slightly raised areas, 

 each with a straight spinelike claw, 2 setae observed in median abdominal area ; 

 apex of abdomen as in adult female but all setae around one-fifth shorter. 



Data. — Described from unmounted specimens (paratypes) and the 

 following mounted material : Two females from Arundinaria fastuosa, 

 Kyoto, Japan, A. S. Hitchcock, July 28, 1921, U. S. N. H., paratypes; 

 six females, two second-stage specimens, five larvae, one adult male, 

 one male nymph, and one third-stage male from Sasa albo-margmaia, 

 Yumoto, Nikko, Japan, S. I. Kuwana collector, July 1925, No. 1256. 

 holotype and paratypes. 



Most closely related to florum and masuii. 



Asterolecanium scirrosis, new species 



(Fig. 62, E-Lj pi. 8, M) 



Habit. — Living at the point of articulation of the blade and sheath of the 

 leaf, the anterior end of the test either pressed tightly between the leaf and 

 stem or resting rather loosely on the leaf petiole, the ventral surface of the test 

 against the upper surface of the leaf, the dorsal surface against the stem. 



Test of female. — Dorsal and ventral surfaces flat at anterior end if pressed 

 tightly between leaf and stem, with 1 or 2 ridges formed around flattened area, 

 the entire test in this case broadly wedge-shaped ; if resting rather loosely on 

 the petiole of the leaf, both surfaces fairly convex and the test roughly ovate 

 or nearly round, in any case the posterior end exposed, rounded, and slightly 

 produced; a distinct margin seldom clearly indicated; 0.75-0.95 mm. long, 

 0.55-0.75 wide ; brownish or greenish yellow, nearly opaque, punctate, varying 

 from very rough and irregular to comparatively smooth ; marginal and dorsal 

 filaments not observed ; elliptical larval exit in produced area. 



Adult female. — Nearly circular, ovoid, or elongate ovoid, posterior end pro- 

 duced ; 0.65-0.85 mm. long, 0.45-0.65 wide. 



Margin : 8-shaped pores in a single row opposite and posterior to spiracles 

 (occasionally 1 pore also close to sclerotized apex), 7-12 on each side of body, 

 9 fi long and 6 wide, usually more than a pore's length apart ; quinquelocular 

 pores apparently in a single or double row along 8-shaped pores with 5-12 

 pores beyond each end of row of 8-shaped pores, not clearly differentiated from 

 quinquelocular pores surrounding spiracles ; disk pores among quinquelocular 

 pores, extending from near anterior spiracles to sclerotized apex, fairly numerous. 



Dorsal surface : 8-shaped pores in a submedian group of 5-8 and a lateral 

 group of 3 or 4, on each half of body, the submedian pores arranged in! a 

 double longitudinal row of 2-5 each, the lateral ones in a single longitudinal 

 row, a total of 17-24 observed in these groups, individual pores 8-9 /a long and 

 5-6 wide ; majority of specimens also with 2-12 8-shaped pores 5 /x long and 4 

 wide scattered on anterior end, usually anterior to mouth parts ; minute 

 8-shaped pores absent ; disk pores sparse among 8-shaped pores and 2-6 some- 

 times present on sclerotized apex ; tubular ducts, measuring 36 m in length, 

 arranged roughly in longitudinal rows ; dorsal tubes close to margin in sclerotized 

 apex. 



Ventral surface : Antenna short, with 2 setae nearly as long as diameter of 

 antenna ; beak without setae ; .spiracular bar globose ; derm outside spiracular 

 opening wrinkled, more or less reticulate, sclerotized, sometimes appearing 

 slightly raised and containing 7-14 quinquelocular pores; spiracles situated 

 close to marginal row of quinquelocular pores and without the usual row of 



