198 MISC. PUBLICATION 42 4, U. S. DEPT. OF AGRICULTURE 



Asterolecanium striatum, new species 



(Fig. 68, A-K; pi. 6, J) 



Habit. — Living on bark and fruit. 



Test of fewkile. — Somewhat pyriform, 1-1.25 mm. long, 0.75-1 wide; slightly 

 convex dorsally, with a longitudinal median and a submarginal carina, and with 

 transverse striations ; flat ventrally ; greenish or brownish yellow, fairly trans- 

 parent, fairly thin, shiny or dull ; marginal filaments whitish, broken ; dorsal 

 filaments whitish, scattered, shorter than marginal; elliptical larval exit in 

 margin. 



Adult female. — Longer than wide, posterior end narrowed and produced ; 0.75-1 

 mm. long, 0.5-0.75 wide. 



Margin : 8-shaped pores in a single row terminating about two-thirds length of 

 an apical seta from bases of setae, posterior pores 6-7 fx long and 4.5 wide, the 

 others 8 /x and 5 wide, a pore's width to length apart ; quinquelocular pores in a 

 single row terminating about the length of an 8-shaped pore from bases of apical 

 setae, at least as numerous as 8-shaped pores. 



Dorsal surface : 8-shaped pores numerous, tending toward arrangement in close 

 transverse rows, the majority 4 /x long and 2.5 wide, a few in rather indistinct 

 submarginal rows 5-6 /x long and 3.5-4 wide ; minute 8-shaped pores absent ; 

 disk pores in submarginal area, very sparse ; tubular ducts 22 /x long. 



Ventral surface : Antenna very short, sunken in derm, with 1 or 2 setae about 

 as long as or longer than diameter of antenna ; beak apparently with 2 pairs of 

 setae; spiracle with bar expanded at inner end and with atrium slightly enlarged 

 and containing 4-6 quinquelocular pores, 7-12 similar pores extending from 

 spiracle to body margin in a double or triple row ; multilocular pores, totaling 

 60-80 and having 10 loculi, in 6 or 7 complete and 2 or 3 interrupted rows (9 

 rows in all), each complete row with 6-11 pores and each interrupted row with 

 2-4; 5 or 6 dark-rimmed 8-shaped pores each side of beak, a few scattered on 

 anterior end, and others tending toward arrangement in 5 or 6 transverse rows 

 posterior to mouth parts ; submarginal 8-shaped pores in an irregularly double 

 row terminating near the fourth posteriormost row of multiocular pores, nearly 

 as unmerous as marginal 8-shaped pores ; submarginal setae in a complete row 

 terminating slightly beyond the posterior pair of margainal 8-shaped pores ; 3-5 

 setae in the posterior row of multilocular pores and 2 in each of the next 3 rows. 



Apex of abdomen : Notch present ; lobes well developed ; setae, apical 60 //. 

 long, interapical 10.8 /x long, dorsal 5.4 /x long, inner ventral 5. 8 m long, intermedi- 

 ate ventral about 5.4 /x long, outer ventral 5.4 fx long ; anal ring with 6 setae 32 fi 

 long and with an inner row of 6 and an outer row of 16 or 18 pores ; ventral 

 surface of apex with an irregular sclerotized area extending anteriorly from 

 interapical setae, surrounding area reticulate. 



Second stage.— Resembling adult but smaller ; ventral surface with 4 pores in 

 each spiracular row ; apex of abdomen as in adult but all setae one-third to 

 one-fifth shorter. 



Larva. — Elliptical. 



Margin : With 28 8-shaped pores, the posterior 4 pairs slightly smaller than the 

 rest, and their axes transverse or diagonal, axes of the others longitudinal ; 

 apparently 3 pairs of setae at anterior end. 



Dorsal surface : A total of 32-40 8-shaped pores arranged in a submedian row 

 of 7-9 and a lateral row of 9-11 (4 pores outside a straight line and suggestive 

 of an intermediate row), on each half of body, submedian pores apparently 

 about one-fourth smaller than marginal, anterior lateral pores larger than the 

 rest and as large as marginal pores of same segments ; disk pores between sub- 

 median and lateral, and between lateral and marginal, 8-shaped pores. 



Ventral surface: Antennal setae, I, apparently 1; IV, 1; V, 1; VI, 4 long, 

 2 stout, 3 fairly stout: antennal bases one-third length of antenna apart; beak 

 setae, 2 pairs apical, 1 pair basal; spiracle with 2 apparently quinquelocular 

 pores ; leg setae, coxa 4, femur 1 on inner margin near base and 1 on outer mar- 

 gin near center, tarsus 2 on inner and 1 on outer margin ; tibia one-third as long 

 as tarsus ; 9 pairs of submarginal 8-shaped pores ; 9 pairs of submarginal minute 

 setae, on abdomen and thorax, 3 pairs of submarginal larger setae at anterior 

 end ; 3 pairs of setae between antennae. 



Apex of abdomen: Notch present; setae, apical 34 /x long, interapical 7.2 \l 

 long, dorsal apparently 3.6 \x long, inner ventral 2.8 \x long, intermediate ventral 

 2.8 /x long, outer ventral 3.6 /x long ; anal ring with 6 setae 18 jx long and appar- 

 ently with an inner row of 6 and an outer row of 12 pores, divided on dorsal and 

 ventral sides. 



