THE SCALE INSECT GENUS ASTEROLECANIUM 225 



Thorax: Bar between wing bases curved on anterior margin, slightly more 

 than twice as long as wide; tibia one-third longer than tarsus. 



Abdomen : Five segments each with a seta dorsally on lateral margin, 3 seg- 

 ments each with a seta in ventral submedian area ; lobes strongly developed, each 

 with 1 long and 4 short setae ; penis sheath with 1 pair of setae dorsally, with 6 

 setae on each side of ventral opening and many minute clear areas at tip. 



Male nymph. — Distinguishing characters similar to those of adult male. 



Third-stage male. — Resembling second stage but elliptical; dorsal 8-shaped 

 pores slightly more numerous than in earlier stage, legs represented by 3 pairs of 

 circular sclerotized areas each with a short, stout claw. 



Data. — Eedescribed from unmounted material from all but type lot, 

 and the following mounted specimens : Four females from "kind of 

 ironweed," Tueuman. Argentina, L. Bruner, July 26, 1897, type; 2 

 females from Compositae. Campinas. Brazil, received from F. Xoack, 

 1897; 3 females, Estaca, Rio Grande, Brazil, from H. von Ihering, 

 March 19, 1905; 19 females, 4 second-stage specimens, 6 larvae, 1 adult 

 male, 2 male nymphs, and 1 third-stage male from Eupatoriwm sp., 

 Bompland, Misiones, Argentina, P. Jorgensen, July 1910, No. 819a ; 8 

 females, 38 larvae, and 1 adult male from "Mio-mio" {Bacchark coridi- 

 folia] (the scientific name was determined from the vernacular name 

 and not from identification of plant material), Corrientes, Argentina. 

 M. Kisliuk, June 20, 1927; 2 females from Vernonia sp., Santos, State 

 of Sao Paulo, Brazil, H. S. Fawcett, January 25, 1937. received from 

 A. Hempel. 



Allied to grandiculum. 



Asterolecanium vitreum, new species 



'Fig. 81, A-G; pi. 5, C) 



Habit. — Living on both surfaces of leaves. 



Test of female. — Somewhat ovoid, posterior end sometimes very slightly pro- 

 duced; 1-1.6 mm. long, 0.75-1.25 wide; convex dorsally, sloping to posterior end, 

 flat ventrally ; bright lemon yellow, transparent, fairly thin: marginal filaments 

 whitish: elliptical larval exit in ventral surface at margin. 



Adult female. — Ovoid or nearly circular, posterior end slightly produced : 0.85- 

 1.35 mm. long, 0.6-1.25 wide. 



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

 length of a posterior pore from bases of apical setae, around 10 u long and .".4 wide. 

 usually slightly less than a pore's width apart: quinquelocular pores in a single 

 row terminating opposite a point 2-16 8-shaped pores from end of row of those 

 pores, the row complete, or interrupted at anterior end for a space opposite 2 15 

 8-shaped pores, usually about half as numerous as corresponding 8-shaped pores 

 near ends of row. as numerous as 8-shaped pores elsewhere. 



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

 very numerous, 18 n long. 



Ventral surface: Antenna circular, slightly raised, with 2 setae longer and 1 

 much shorter than diameter of antenna; beak with 2 pairs of setae: spiracular 

 bar somewhat expanded at inner end: 4-12 quinquelocular port's between opening 

 of anterior spiracle and body margin, ."» of 4 of which, may be in a rather irregu- 

 lar group near opening and the others extending toward, or actually attaining. 

 the body margin: with 2-6 quinquelocular pores, usually in a rather loose group 

 outside opening of posterior spiracle and occasionally 1 or 2 toward body margin : 

 multilocnlar pores, having 9-13 loculi. in 6 or 7 complete and 2 or 3 interrupted 

 rows, with the anterior row in line with, or posterior to. the posterior spiracles; 

 posterior row with 3-6 pores, each of the next \\ rows with 9 IT. next with 

 11-16, next with 5-18, next with 5-11, and each of interrupted rows with 1 5. 

 the total number being (5!) OS; 2 4 dark-rimmed 8-shaped pores each aide o\' beak. 

 a few scattered on anterior end. and a few on abdomen some of which are 

 arranged in 3 or 4 transverse rows; submarginal 8-shaped pores in a rather 

 crowded single row (appearing double at some points) terminating near penulti- 

 286720—41 15 



