THE SCALE INSECT GENUS ASTEROLECAXIUM 151 



of mouth parts. 2 or 3 anterior to mouth parts, and a few in 2 transverse rows 

 near posterior end of abdomen; snbmarginal 8-shaped pores in a single row 

 terminating slightly nearer to bases of apical setae than to the posterior pair 



of marginal 8-shaped pores, nearly as numerous as corresponding marginal 

 8-shaped pores where the latter are present, and similarly spaced at anterior 

 end where they are absent: G pairs of snbmarginal setae on abdomen, the 

 posterior pair around length of an apical seta from bases of those setae; 1 

 pair of setae posterior to genital opening and 1 pair anterior to it. 



Apex of abdomen: Slightly concave: lobes indicated: setae, apical 44-50 m 

 long, interapical 7.2-9 n long, inner ventral 5.4 n long, outer ventral 5.4-7 n 

 long: anal ring with 6 setae 28-30 u long and with an inner row of 6 and an 

 outer row of 14 pores, apparently divided on dorsal side; ventral surface of 

 apex slightly sclerotized in dentate rows. 



Larva. — Elongate. 



Mai gin: With 28 8-shaped pores, the anterior pair largest, first pair anterior 

 to penultimate pair smallest, the others gradually increasing in size anteriorly, 

 next to anterior pair as large as posterior and penultimate pairs, axes of the 

 posterior G pairs diagonal, of the others longitudinal: 3 pairs of setae at 

 anterior end. 



Dorsal surface: 8-shaped pores in a submedian row of 8-10 on each half of 

 body, the posterior and the anterior pores distinctly larger than the others, of 

 the remainder those toward posterior end of row the smallest, all slightly 

 larger than marginal pores of same segments: disk pores in lateral area. 



Ventral surface : Antennal setae. I. 1 : IV, 1 ; V. 1 : VI. 2 long, 2 stout, 3 



fairly stout. 1 slender: distance between antennal bases one-half length of 



antenna; beak serae. 2 pairs apical. 1 pair median: anterior spiracle with 1 



trilocnlar pore, pos trade with 1 trilocnlar and 1 quinqueloeular pore; 



. coxa 4. femur 1 on inner margin near base and 1 on outer margin near 



;■. tarsus 2 on inner and 1 on outer margin: tibia one-half as long as 



tarsus; pairs of snbmarginal 8-shaped pores: G pairs of snbmarginal minute 



on abdomen, 1 pair of snbmarginal larger setae at anterior end; 2 pairs 



of setae between antennae and month parts. 



Apex of abdomen: Notch present: lobes indicated: setae, apical 27 m long, 

 interapical 5 4-7.2 u long, inner ventral 2 ; u long, outer ventral 3.6 y. long : anal 

 rii g with o' setae 10 8// long, and with an inner row of 6 and an outer row of 10 

 pores, divided on dorsal side. 



Data. — Described from unmounted specimens (paratypes). 12 

 mounted females, and 10 mounted larvae collected on Bambusa sp. 

 unless otherwise indicated: all host material collected by F. A. Mc- 

 Clure in China. The source of the material is as follows: Bamboo 

 Garden. Lingnan University. Kwangtung, September 3. 15*26: Au 

 Tsai. Kwangsi, November 5. 192s ; Hak Ts lien. Honam Island. Kwang- 

 tung. April 4. 1029: P'oon T'e district. Kwangtung, August 23, 1931, 

 holotype and paratypes; Lingnan University. P'oon Ue district. 

 Kwangtung. September 8, 1931 : on Dendrocalam us sp., Sing Kok Tsaai. 

 Yeung Kong district. Kwangtung, December 18. 1931: Shek Kwat, 

 She Ts'uen. Man Ming district. Kwangtung. December 22, 1931: 

 Lingnan University, P'oon Ue district, Kwangtung. February 22. 1932. 



This species is closely related to pseudolamceolatum and solen- 

 ophoroides but is longer and more slender than these, and has a 

 different arrangement of marginal 8-shaped pores. 



ASTEROLECAXIUM PERPLEXUM, 11CW species 

 (Fig. 49, M-W; fig. 50. .1, B; fig. 51. A-K : pi. 4. L) 



Habit. — Living on both surfaces of leaves. 



Test of female. — Somewhat ovoid, 1.4-1.6 mm. long, 1-1.4 wide: nearly flat 

 dorsally, sometimes with a very faint longitudinal median carina : flat ventrally : 

 pale greenish yellow, transparent, very thin, shiny, punctate; marginal filaments 



light brownish yellow; larval exit apparently a slit in margin. 



Adult female. — Longer than wide, posterior end sometimes slightly produced; 

 1-1.4 mm. long, 0.85-1 wide. 



