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



Data. — Described from unmounted specimens (paratypes) and the 

 following mounted material : Eight females and five larvae on Attalea 

 cohune, Culebra, Canal Zone, H. Pittier, November 1911, U. S. N. H., 

 paratypes; two females and two larvae on Attalea cohune, old site 

 of Gorgona, Canal Zone, W. K. Maxon, June 6, 1923, U. S. N. H., 

 holotype and paratypes; five females and seven larvae on Attalea 

 gomphococca, Puerto Armuelles, Chiriqui, Panama, G. F. Ferris, 

 August 1938, paratypes. 



This species resembles sdbalis and urwhi, but differs from sabalis 

 in having the atrium of the spiracle enlarged and containing trilocular 

 pores, and from urichi in not having setae on the anal ring. 



Asterolecanium grandiculum, new species 



(Fig. 28, A.-E; pi. 4, E) 



Habit.— Living on both surfaces of leaves. 



Test of female. — Practically circular, 1.95-2,5 mm. in diameter ; strongly 

 convex, more or less bluntly conical dorsal ly ; flat ventrally ; greenish yellow, 

 transparent, smooth, shiny ; marginal filaments whitish, slightly shorter at 

 posterior end than elsewhere ; numerous dorsal filaments also whitish, a tuft in 

 center at least twice length of marginal, others shorter than marginal ; elliptical 

 larval exit in margin. 



Adult female. — Practically circular, approximately 1.5-1.9 mm. in diameter, 

 posterior end sometimes slightly produced. 



Margin: 8-shaped pores in a double (rarely triple) row terminating two to 

 three times the length of a posterior pore from bases of apical setae, posterior 

 pores 12 n long and 8 wide, anterior pores 16 m long and 9 wide, the others around 

 14 fi long and 8 wide ; interspaces between pores varying from the width to nearly 

 twice the length of a pore, the 2 rows around a pore's width apart ; 8-20 quinque- 

 locular pores where each spiracular pore band meets margin, the row usually 

 interrupted between anterior and posterior pore bands, usually 1 pore near each 

 8-shaped pore of nearer row ; disk pores dorsad of 8-shaped pores terminating 

 between the posterior pair of 8-shaped pores and apical setae, and somewhat 

 less numerous than 8-shaped pores. 



Dorsal surface : 8-sbaped pores tending toward arrangement in circles parallel- 

 ing the margin in submarginal area, and in slightly curved longitudinal rows in 

 median area, some pores 12 n long and 8 wide but the majority around 16 v long 

 and 9-10 wide, while those in median area are 18-20 /jl long and 12 wide ; minute 

 8-shaped pores sparse ; disk pores fairly numerous ; tubular ducts 36 n long. 



Ventral surface : Antenna circular, sunken in derm, with 3 setae nearly as 

 long as diameter of antenna, and 1 longer ; beak with 2 pairs of setae ; spiracular 

 bar expanded at inner end, more or less triangular ; 11-28 quinquelocular pores 

 extending from spiracle to margin in a single, double, or rarely triple row ; 

 multilocular pores, totaling 75-105 and with 9^12 loculi, arranged in 5 complete 

 and 4 interrupted rows, the anterior row anterior to posterior spiracles, posterior 

 row with around 20 pores, each of next 2 rows with 12-24, next with 11-17, next 

 with 6 or 7, and each of interrupted rows with 2-6; 1-4 dark-rimmed 8-shaped 

 pores each side of mouth parts, a few scattered anterior to mouth parts, and a 

 few arranged in 4 transverse rows posterior to mouth parts ; submarginal 8-shaped 

 pores mostly in a single row, but sometimes in an irregularly double row for 

 a short distance, and terminating near the posterior row of multilocular pores, 

 not quite so numerous as marginal 8-shaped pores ; submarginal setae in a 

 complete row terminating opposite the posterior pair of marginal 8-shaped pores ; 

 2 pairs of setae in the posterior row of multilocular pores, 1 pair in each of the 

 next 2 rows. 



Apex of abdomen : Notch present ; lobes indicated ; setae, apical 80-108 fi long, 

 interapical 17-20 n long, dorsal 12 fi long, inner ventral 8-9 n long, outer ventral 

 10.8-12.6 n long ; anal ring with 6 setae 28-32 fi long and an inner row of 6 and 

 an outer one of 14 pores ; ventral surface of apex slightly sclerotized and rugose. 



Second stage. — Resembling adult, but smaller ; margin with 8-shaped pores in 

 a. single row, without quinquelocular pores ; dorsal surface with 8-shaped pores 

 less numerous than in adult, minute 8-shaped and disk pores not observed ; ven- 

 tral surface with 4-6 pores in each spiracular row, submarginal 8-shaped pores 

 in a single row ; apex of abdomen as in adult, but all setae 2-4 /x shorter. 



