THE SCALE INSECT GENUS ASTEROLECANIUM 201 



Asterolecanium subdolum, new species 



(Fig. 69, A-E; pi. 6, F) 



Eabit. — Living on the lower surface of leaves. 



Test of female. — Nearly elliptical, posterior end slightly produced and bluntly 

 pointed; 2 mm. long, 1 wide; nearly flat dorsally, with a faint longitudinal 

 median carina ; flat ventrally ; bright yellow, transparent, thin, shiny, punctate ; 

 marginal filaments whitish, longest at anterior and posterior ends. 



Adult female. — In shape similar to test, 1.75 mm. long, 1 wide. 



Margin : 8-shaped pores in a single row terminating a pore's width from bases 

 of apical setae, posterior pores 12 ix long and 7 wide, others 14 /j. long and 8 wide, 

 a pore's width apart at anterior end. less than that elsewhere ; quinquelocular 

 pores in a single row terminating near the penultimate or posterior pair of 

 8-shaped pores, half as numerous as corresponding 8-shaped pores near posterior 

 end, as numerous as 8-shaped pores elsewhere: disk pores dorsad of 8-shaped 

 pores and about half as numerous as those, terminating slightly before or beyond 

 the end of the row of 8-shaped pores, irregularly spaced. 



Dorsal surface: Minute 8-shaped and disk pores fairly sparse: tubular duets 

 absent along median line posterior to mouth parts, numerous elsewhere, 30 m 

 long : dorsal tubes present 



Ventral surface : Antenna dome-shaped, with 2 setae longer and 2 shorter 

 than diameter of antenna ; beak without setae ; spiracular bar fairly broad ; 

 25-30 quinquelocular pores extending from anterior spiracle to body 

 margin in a row which is single at the spiracle, but 3 or 4 pores wide at 

 the margin; 5 or 6 pores in a group near posterior spiracle and 1 or 2 extending 

 toward body margin but nearer the group than the margin : multilocular pores, 

 totaling 80 and with 8-10 loculi, in 4 complete and 3 interrupted rows, posterior 

 row with 14 pores, penultimate with 15, next with 26, next with 14, and each 

 of interrupted rows with 2-6; 1 dark-rimmed 8-shaped pore 1 side of beak, 

 a few anterior to mouth parts, and a fair number in 3 longitudinal lateral 

 rows on abdomen; submarginal 8-shaped pores in a single row terminating near 

 the posterior row of multilocular pores, half as numerous as corresponding 

 marginal 8-shaped pores : 6 pairs of submarginal setae on abdomen, the posterior 

 pair near the fifth 8-shaped pore from end of row ; 1 pair of setae each in the 

 posterior and penultimate rows of multilocular pores. 



Apex of abdomen : Setae, apical, 28 /* long, interapical 8 /i long, inner ventral 

 4 fi long, outer ventral 5.4 /j. long ; anal ring with 6 setae 36 y. long and with an 

 inner row of 6 and an outer one of 20 pores, divided on dorsal side and tending 

 toward division on ventral ; ventral surface of apex slightly sclerotized near 

 median line and margin. 



Larva. — Elliptical. 



Margin : With 28 8-shaped pores, anterior pores slightly larger than the rest, 

 axes of all longitudinal ; 3 pairs of setae at anterior end. 



Dorsal surface : 8-shaped pores in a submedian row of 4 or 5 on each half 

 of body, anterior pore slightly larger than the others, all smaller than marginal 

 pores of same segments ; disk pores in lateral area. 



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

 fairly stout, 1 slender; antennal bases nearly one-half length of antenna apart; 

 beak with 2 pairs of setae at tip; anterior spiracle with 1 trilocular pore, 

 posterior spiracle with 1 trilocular and 1 quinquelocular; leg setae, coxa 4, 

 femur 1 on inner margin near base and 1 each on inner and outer margins 

 near center, tarsus 2 on inner and 1 on outer margin : tibia one-half as long 

 as tarsus; probably 9 pairs of submarginal 8-shaped pores; apparently 7 pairs 

 of submarginal minute setae on abdomen and apparently 2 pairs of submarginal 

 larger setae at anterior end: 2 pairs of setae between antennae and mouth parts. 



Apex of abdomen: Setae, apical broken near base, interapical apparently 9 n 

 long, inner ventral 2 /x long, outer ventral 3.6 fi long: anal ring with tl setae 

 12.6 ll long and with an inner row of 6 and an outer one of apparently 12 

 pores, tending toward division on dorsal side. 



Data. — Described from one unmounted specimen, one mounted fe- 

 male, and one mounted larva from Phyllostackys aiwea, Koolong Ue, 

 Fukien, China, F. A. McClure. July 26. 1930. holotype and paratypes. 



This species is closely related to cMnae and fusum. It differs from 



