THE SCALE INSECT GENUS ASTEROLECAXIUM 135 



Bambusa sp., Tin H;i village, Honam Island. May 5. 1925; li<>mbusa 

 nana. Philippine Islands. September 1925; 2 females on Bambusa sp.. 

 Chung Chou, Kwangsi, September 21, 1925, holotype and paratype; 

 Bambusa sp.. Bamboo Garden, Lingnan University, September 2, 1926; 

 Bambusa sp., Hak Ts'uen, Honam Island. April 4. 1929; Arundinaria 

 sp.. Lingnan University. P'oon Ue district, September 9. 1931: Bam- 

 sp.. Lingnan University, P'oon Ue district. October 2, 1931 ; Bam- 

 busa sp., P'oli T'au T'suen, Man Ming district, December l'7. 1931. 



This species is so similar to minutum that in the adult stage it is 

 sometimes difficult to differentiate the two although in the larval stage 

 they are easily separated. In the adult females of minusculum there 

 are S to 17 (usually ar least 12) dorsal 8-shaped pores and in those of 

 minutum -± to 8; there are 8 to 1-1 quinquelocular pores in each spiracu- 

 lar pore band in minusculum and 6 to 10 in minutum; furthermore, in 

 minu ■ ulum the apical setae are 52 to 56 fi long and the ring setae 24 

 to 30 ^ long, while in minutum the apical setae are 44 to 50 n long 

 and the ring setae 20 \x long;. The larvae of minusculum have 4 dorsal 

 8-shaped pores which are slightly larger than the marginal, while those 

 of minutum have at least 7, the largest of which is smaller than the 

 marginal pore of the same segment; also in minusculum there is 1 

 trilocular pore near each spiracle, but in minutum 1 trilocular pore 

 near the anterior spiracle and 2 near the posterior spiracle. 



Asterolecanium mixutum Takahashi 



(Fig. 42, F-J; fig. 43. A; pi. 7, C) 



Described in 1930 (93, pp. 10-11) from specimens on Bambusa 

 sh znostachya from Taihoku, Xisui, Suisha, and Xaze, Taiwan 



(Formosa). 



1777&?7.— Living on the lower surface of leaves. 



Test of female. — Broadly ovoid, sometimes indented by growth against hairs 

 on leaf; 0.5-0.75 mm. long, 0.4-0.6 wide; strongly convex dorsally, sidos often 

 nearly vertical, top slightly rounded, most strongly convex at anterior end, 

 'sloping from anterior end to posterior third, tip of test produced and elevated, 

 with transverse striatums which are most conspicuous between most strongly 

 convex area and produced portion : flat ventrally; pale greenish yellow, trans- 

 parent, thin, shiny; marginal filaments pale greenish yellow to slightly whitish, 

 not observed at posterior end; dorsal filaments also pale greenish yellow, much 

 longer than marginal. 4-8 heated at intervals in submarginal or lateral area; 

 Circular larval exit at tip of produced part. 



Adult ft male. — In shape similar to test, 0.4-0.75 mm. long. 0.3-0.6 wide. 



Margin: 8-shaped pores in a single row terminating three to four times the 

 length of an apical seta from bases of setae, posterior pores usually G n long and 

 4 wide, others 7-8 ix long and 4.5 wide, posterior pores sometimes eight or ten 

 times a pore's length from the penultimate pores, all pores usually a pore's length 

 apart, but sometimes less and often more, sometimes dropping out for varying 

 distances, or reduced in size, due to growth against hair- mi Leaf; quinquelocular 

 pores in a Single row terminating near the posterior pair of 8-shaped pores or 

 with 3 or 4 pores beyond this point, usually in the proportion of 1 to each 

 8-shaped pore and 1 opposite each interval between the 8-shaped pores that 

 are around a pore's length apart, either persisting or dropping out whore 

 B-Shaped pores have dropped out and sometimes dropping out at a point where 

 specimen has grown against a hair, even if corresponding 8-shaped pore has 

 persisted. 



Dorsal surface: 8 shaped pores 4-8 in number; on each half of body. 1 near 

 posterior end in Kubmarginal area, and 1 or '2 anteriorly in submarginal area, 

 sometimes 1 also present in lateral area, posterior pore V2 p long and S wide. 



