GENERA OF COCCIDA2. 
101 
Siil)family IV. — DiaspinvE. 
Table of Tribes. 
Adult 9 not enclosed in the second larval skiti, which forms a portion of the 
scale, and which itself is smaller than the perfect scale, and has a 
secretional appendage, on its border Tribe I.— Aspidiotini. 
Adult 9 enclosed in the second larval skin, which forms a portion of the scale, 
and which is itself as large, or nearly as large as the perfect scale 
and without a secretional appendage Tribe II. — Leucaspini. 
Tribe I. — Aspidiotini. 
Table of Genera. 
Females. 
Scale of adult produced ovally. or mussel-shell shaped, i e., narrowed in front 
and gradually widened posteriorly; first larval skin at the apex, 
or very near it o_ 
Scale of adult circular, or broadly oval ; first larval skin placed in or near 
the middle. 
Scale flat, plate-shaped, not enclosed beneath. 
Last abdominal segment with five groups of spinnerets; apex not dis- 
tinctly emarginate G. 1. .\s|>i(liotiis Bouche. 
Last abdominal segment with five groups of spinnerets; apex distinctly 
emarginate G. 2. DiHspis Costa. 
Scale highly convex, hemispherical, closed beneath by a secretional layer 
or plate G. 3. Targionia Sig. 
2.— Scale long, oval, or elliptical ; larval skin placed at the parallel sides. 
Last abdominal segment with four groups of spinnerets. 
G. 4. I*arlatoria Sig. 
Scale narrowed at apex, gradually widened posteriorly, mussel-shell shaped ; 
larval skin placed at the apex. 
Scale brown, convex; last abdominal segment with five groups of spin- 
nerets G. .5. Lepido««aplieii> Shinier. 
(= Mytilaspis Sig.) 
Scale white, opaque, more or less convex; last abdominal segment with 
five groups of spinnerets G. 6. C'liioiiaspis Sig. 
Males. 
Scale but slightly elongated, with the exuviae placed always somewhat away 
from the middle G. 1. .4spidiotiis Bouche. 
Scale elongated, with the exuviae at the apex, or near it. 
With median and lateral keels G 2. Diaspis Costa. 
With lateral keels, but no median G. 4. l*arlatoria Sis;. 
Scale narrow elongated, convex, brown, like that of the 9 - 
G. 5. Lepido<i$aplies Shinier. 
Scale long, narrow, with nearly parallel sides and with lateral keels. 
G. t). C'liioiiaspis Sig. 
