3 The Philippine Journal of Science 1917 



8-jointed, length in microns: (1) 25-55, (2) 32-52, (3) 37-50, 

 (4) 20-45, (5) 25-42, (6) 27-30, (7) 30, (8) 80. "In one 

 instance, joint three measured 73, evidently being combined with 

 four." (From the original description.) 



Luzon, Tayabas, Lucban (Townsend), on Citrus nobilis. 



Pseudococcus filamentosus (Cocker ell). 



Pseudococcus filamentosus (CocKEREiiL) Fernald, Cat. Coccidae of 

 the World (1903), 101; Cockerell and Robinson, Bull. Am. Mus. 

 Nat. Hist. (1915), 34, 106. 



Female subglobose, covered with dense white secretion. 

 Mounted female 3.5 to 4 millimeters long, broad oval, green 

 when boiled in KOH. Anal ring with six hairs. Skin with 

 numerous, small, round glands. Legs stout, claw simple (Plate 

 I, fig. 9). Antennae 7-jointed, joint seven the longest, the 

 others subequal, but five and six the shortest (Plate I, fig. 8). 



Mindanao, Tanghulan (Baker) , on Coffea arabica. 



LECANIIN^E 



Synoptic table of the genera. 



ot. Adult female triangular; cottony ovisac slightly developed, forming a 

 fringe around the caudal margin (Plate II, fig. 1).... Protopulvinaria. 

 a'. Female oval or suboval in Philippine species. 



6\ Female with a posterior ovisac; body more or less chitinous. 



Pulvinaria. 

 V. Female without ovisac. 



&. Covering of female consisting of wax, often thick Ceroplastes. 



c*. Female naked or covered by a film of secretion. 



cP. Female with marginal fan-shaped scales (Plate II, fig. 13). 



Faralecanium. 

 d". Not so. 



e\ Ventral surface in abdominal region with groups of pores 

 arranged in a semicircle (Plate II, fig. 14).... Platylecanium. 

 e'. Not so. 



/*. Skin with polygonal areas containing pits ; hard when mature ; 

 high convex or hemispherical (Plate II, fig's. 18 and 19). 



Saissetia. 



f. Skin without polygonal areas containing pits; soft when 



mature; never high convex Coccus. 



Genus PROTOPULVINARIA Cockerell 



Type, Protopulvinaria convexa Hempel. 



"Differs from Lecanium (Coccus) in the presence of a narrow 

 fringe of cottony (cottonlike) secretion surrounding the female 

 after bviposition. This fringe is not of the same nature as the 

 ovisac of Pulvinaria, as it does not actually cover the eggs, which 

 are all concealed beneath the body of the insect." (Green.) 



