THE CANADIAN ENTOMOLOGIST. 105 



FOUR NEW DIASPINE COCCID^. 



BY T. D. A. COCKERELL, N. M. AGR. EXP, STA. 



Aspidiotus cueroensis, n. sp. — $ . Scale diam. slightly over i millim., 

 circular, slightly convex above and beneath, with the margin somewhat 

 elevated, like an oyster; very pale gray or grayish-white, quite a delicate 

 shade, exuviae more or less to one side, covered, inconspicuous, but 

 appearing as a dark spot on the inside of the scale. $ . Shape ordinary ; 

 black when dry. No circumgenital glands. Anal orifice elongate oval, 

 moderately large, distant from bases of lobes about i }^ times its length. 

 Only one pair of lobes, these and the area about their base remaining 

 dark brown after boiling ; lobes rather large, but short and broad, con- 

 tiguous at the base, but thence diverging to their rounded apices, whence 

 they slope downwards to the comparatively short outer side, the shape of 

 the lobes being almost as in A. ostrece/ormis. The second and third 

 lobes, somewhat as in A. cotiiferanim, are represented by rounded 

 prominences, which can hardly be said to project above the margin. 

 Some distance below the place of the second lobe is a small round 

 hyaline gland-spot, quite conspicuous ; another, less conspicuous, is ad- 

 jacent to the base of the rudimentary third lobe. Pyriform processes of 

 the interlobular incisions short and inconspicuous ; at the first incision 

 the inner process is considerably larger than the outer. No plates, but 

 the usual spines are present, a pair some distance beyond the place of 

 the third lobe being quite large. Margin beyond the lobed area, and 

 even within it, minutely crenulate. Dorsal glands extremely few, circular. 

 In the area which in other species is occupied by the lateral groups of 

 circumgenital glands, are longitudinal brown stripes, very conspicuous, 

 apparently due to chitinous thickening. A less conspicuous transverse 

 stripe occurs in the place ordinarily occupied by the median group of 

 glands. 



Hab. — On rough bark of trunks of Ce/tis, Cuero, Texas, June i, 

 1898. ( C. H. T. Townsetid.) One specimen was badly infested by a 

 fungus. Allied to A. coniferarum, Ckll. 



Aspidiotus duplex, Ckll., \d.x. pceonice, n. var. — 9- Has only two 

 groups of circumgenital glands (the anterior and posterior lateral groups 

 being united), each of 70 to 76 orifices. First three pairs of lobes con- 

 spicuously notched on each side ; fourth lobe with one deep notch. At 

 most only two or three minute squames beyond the fourth lobe. About 

 15 glands in the groups laterad of the mouth. 



