XEW SPECIES OF DIASPINE SCALE INSECTS. 2T 



short ones, and bevontl the third three short ones. The marginal 

 spines are normal, and within these is a submarginal row of short 

 spines; anal opening large, nearer base than tip cf segment; parageni- 

 tals, dorsal pores, and basal and ventral thickenings wanting. 



The 5 or 6 abdominal segments preceding the anal plate are very 

 narrow, rather sharply defined, and covered "snth cross or longitudi- 

 nal striae. 



Type. — Bureau of Entomology Xo. 14125. On mangoes imported 

 from India, at ]\Iiami, Fla., collected by Mr. P. J. Wester, of the Sub- 

 tropical Laborator}' and Garden of the Department of Agriculture, 

 and from Mayaguez, P. R., tlirough D. W. Ma}*. 



XoTE. — This mango scale is a very interesting species, apparently 

 undescribed, and evidentl}' imported from India ^^'ith the originaP 

 sending of the variety of mango on which it occurs, namely, Seed 

 and Plant Introduction and Distribution No. 7108, the Sundershah. 

 It seems to belong to the genus Leucaspis, but the failure to fmd the 

 male scale leaves this reference in some httle doubt. It is certainly 

 unlike an}* described species of tliis genus. It occurs tliickly massed 

 in the cracks of the bark, and the reddish inflated skins are the sec- 

 ond stage, which include the adult insect in a sort of sac, and look like 

 minute eggs or seeds, the whitish wax}' covering adhering very 

 loosely and in many cases having been lost off. It has every appear- 

 ance of being a serious pest, from the dense infestation exhibited. 



MYTILASPIS CHILOPSIDIS n. sp. 



(Plate VIII, fig. 1.) 



Scale of female: More than a millimeter in length, narrow, light 

 purplish in color. 



Scale of male: Similar, about one-half the size of the female. 



Adult female: A little more than a millimeter long, of normal 

 CTiionaspis shape, expanding notably posteriorly; anterior and 

 lateral margins smooth, normal. Anal plate much broader than long, 

 and but slightly chitinized. Lobes limited to one prominent median 

 pair. Laterals obsolete or represented by slight tooth-like projec- 

 tions. Margin of pygidium somewhat toothed, caused by the pro- 

 jections over each of the large marginal oval pores. Incisions 

 inconspicuous; paraphyses wanting. Plates: 2 median followed on 

 either side by a group of 4 or 5, then 2 or 3; plates somewhat longer 

 than lobes. Spines normal ; anal opening very near base of segment. 

 Paragenitals : Anterior 5; anterior laterals 7 to 10; posterior laterals 

 7 to 9 (from examination of two females). Large marginal pores 

 occurring in three pairs, two each, with a single pair near the base 

 of the segment. Large scattering circular or slightly oval pores over 

 the general area of the pygidium. Basal tliickenings wanting; ventral 



