XII, D, 1 Robinson: Coccidas of the Philippine Islands 17 



g'. Not so. 



h^. Female with a deep constriction between thorax and abdomen 



(Plate IV, fig. 13) Selenaspidus. 



h^. Not so. 



t*. Female scale circular or nearly so (Plate V, figs. 4 and 9). 



f. Female scale with exuvise at or near the center; caudal 



margin often with a single pair of lobes (Plate V, 



figs. 1, 4, and 7) Aspidiotus. 



f. Female scale with exuvia sublateral or lateral; caudal 

 margin with three or four pairs of lobes, caudal area 

 often with a reticulated portion (Plate IV, fig. 9). 



Pseudaonidia.* 

 r. Female scale always elongate (Plate V, fig. 12; Plate VI, 

 fig. 8). 

 A;\ Median lobes separated, usually with spines between; 

 female scale mytiliform (Plate V, figs. 13 and 14). 



Lepidosaphes. 



kr. Median lobes usually close together (Plate VI, figs. 7 



and 14). 



r. Male scale white, differing from that of female; median 



lobes darker than others, margins dentate or crenu- 



late (Plate VI, figs. 6, 9, and 10).... Hemichionaspis.* 



U Male and female scales usually brown; median lobes 



no darker than others, notched (Plate VI, figs. 11, 



13, and 14) Pinnaspis.* 



* The particular characters of Phenacaapis and Aulacaspis seem to establish few differences 

 between the two genera; the scales of the sijecies of Phenacaspis are difficult to distinguish 

 from those of Aulacaspis; there are few differences in the characters of the females. 



The distinctions between Aspidiottis and Pseudaonidia are inadequate for an accurate 

 determination. One acquainted with the species of each genus can recognize the differences, 

 but the contrasting characters are not definite. 



A difference .based upon the caudal margins might suffice to separate Hemichionaspis and 

 Pinnaspis; the scales of the two genera are confusing. Lindinger places Hemichionaspis as 

 a synonym of Pintiaspis. 



Genus ODONASPIS Leonard! . 



Type, Aspidiotus secreta Cockerell. 



Female scale circular, often elongated. Adult female with 

 a single or no lobe on the caudal margin; circumgenital glands 

 grouped in various ways ; anal orifice often far from the end. 



Odonaspis schizostachyi Cockerell and Robinson. 



Odonaspis schizostachyi COCKERELL and Robinson, Bull. Am. Mus. Nat. 

 Hist. (1914), 33, 327. 



Female scale circular, little over 1 millimeter in diameter, 

 dull white, first skin pale yellow. Adult female round; caudal 

 margin with a large median lobe free from indentations, second 

 and third lobes each bilobed, third much lower than second, 

 both without indentations; two spinelike plates laterad of 



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