THE SCALE INSECT GENUS ASTEROLECANIUM 87 



ASTEROLECANIUM EUPHORBIAE, new species 



(Fig. 22, H-L; fig. 23, Aj pi. 6, 0) 



Habit. — Unknown. 



Test of female. — Nearly circular, 1.4-1.9 mm. in diameter; nearly flat or 

 very slightly convex dorsally and ventrally ; pale yellow, sometimes almost 

 colorless, transparent, very thin, shiny or dull; marginal filaments whitish, 

 fragmentary; elliptical larval exit in margin. 



Adult female. — Nearly circular, 1-1.5 mm. in diameter. 



Margin: 8-shaped pores in a single row terminating around length of apical 

 seta from setal bases, posterior pores 9-10 /x long and 6-8 wide, the others 10-12 

 /x, long and 8 wide, at least a pore's length apart; quinquelocular pores in a 

 single row terminating 6-17 8-shaped pores from the posterior pair of those 

 pores, only about half as numerous as 8-shaped pores near posterior end of the 

 row, elsewhere at least as numerous. 



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

 30 (i long. 



Ventral surface: Antenna circular or oblong, sunken in derm, rough, some- 

 times ending in a sharp spine, with 1 or 2 setae shorter than diameter of 

 antenna and 3 longer; without quinquelocular pores or with 1 or 2 between 

 antenna and margin; beak with 1 pair of setae; spiracle with bar greatly 

 expanded at inner end, the derm around opening and part of bar slightly sunken 

 and containing 3-5 quinquelocular pores, 18-28 similar pores extending from 

 spiracle to body margin in an irregularly double or triple row; multilocular 

 pores, totaling 112-157 and with 8-10 loculi, arranged in 5 or 6 complete (sixth 

 sometimes interrupted) and 3 or 4 interrupted rows, with anterior row anterior 

 to posterior spiracles, posterior row with 10-14 pores, penultimate with 12-19, 

 each of next 2 with 14-26, and each of next 3 or 4 with 3-10 ; 4-7 dark-rimmed 

 8-shaped pores each side of beak, some scattered on anterior end, a few in 

 lateral area of abdomen, and a few arranged in 2 rows among multilocular 

 pores; submarginal 8-shaped pores in an irregularly double row terminating 

 near posterior row of multilocular pores, one-half as numerous as marginal 

 8-shaped pores at some points, quite as numerous at other points ; submarginal 

 setae in a complete row terminating halfway between the posterior pair of 

 marginal 8-shaped pores and apical setae ; 4 setae in posterior row of multilocu- 

 lar pores, 2 or 3 in penultimate, and 1 or 2 in first row anterior to penultimate. 



Apex of abdomen : Concave ; lobes indicated ; setae, apical broken, apparently 

 54 fi long, interapical 7.2 fx long, dorsal 5.4-7.2 /x long, inner ventral 3.6 /x long, 

 intermediate ventral 5.4 jx long, outer ventral 6-9 fx long ; anal ring with 6 setae 

 40-45 [x long, and with an inner row of 6 and an outer one of apparently 14 pores ; 

 ventral surface of apex slightly rugose. 



Larva. — Ovoid. 



Margin: With 28 8-shaped pores, the posterior 6 pairs slightly smaller than the 

 others, and with their axes transverse, axes of the others longitudinal ; 2 pairs 

 of setae at anterior end. 



Dorsal surface : 8-shaped pores in a submedian and a lateral row of 9 each 

 on each half of body, about as long as the width of a marginal pore ; disk pores 

 between lateral and marginal 8-shaped pores. 



Ventral surface: Antennal setae, I, 1; IV, 1; V, 0; VI, 2 long, 2 stout, 3 

 fairly stout, 2 slender; bases of antennae one-fourth length of antenna apart; 

 beak setae, 2 pairs apical, 1 pair basal; spiracle with 1 trilocular and 1 quin- 

 quelocular pore; leg setae, coxa 4, femur 1 on inner margin at base and 1 each 

 on inner and outer margins near center, tarsus 2 on inner and 1 on outer margin ; 

 tibia one-third as long as tarsus; apparently 8 pairs of submarginal 8-shaped 

 pores, none noted between antennae; 10 pairs of submarginal minute setae, 

 on abdomen, thorax, and head ; 3 pairs of setae near antennae. 



Apex of abdomen: Notch present; setae, apical 108 /x long, interapical 7.2 v 

 long, dorsal 3.6 fx long, inner ventral 5.4 /x long, intermediate ventral 5.4 m long, 

 outer ventral 5.4 /x long; anal ring with 6 setae, eacb about 22 /x long, and with 

 an indeterminable number of pores, apparently not divided. 



Data. — Described from two mounted females on Euphorbia pulri- 

 noeta, South Africa, intercepted at Washington, D. C., L. L. Spessard, 

 October 27, 1930, paratopes; unmounted material, four mounted fe- 

 males, and two mounted larvae on Euphorbia fixox, Tausenville, South 



