86 INSECTS NOXIOUS TO AGRICULTURE. 
52, Errocuiton spinosus, Maskcll. 
Ctenochiton spinosus, Maskell, N.Z. Trans., Vol. XI., 1878, 
p, 2123 Vol 2X. 1879, pe 2925 Volk ATVs, Haak, 
p. 218; Vol, XVII., 1884, p. 25. 
(Plate XIII., Fig. 2.) 
Test of female white, thin, formed of felted threads excreted 
from spiny spinnerets ; inconspicuous at all stages, and often 
absent on the adult, but distinguishable on the larva and the 
second stage. The excreting spinnerets are almost all at the 
edge of the body, and the fringe is formed of featherlike seg- 
ments, each segment corresponding to a spine. 
Test of male white, thick, felted, oval, and convex; length, 
about jim. Fringe as in the female. 
Adult female dark-brown, sometimes almost black ; slightly 
elongated, convex, affecting almost altogether the twigs and 
branches in preference to the leaves. Average length, about din. 
Antenne of seven joimts: on the last jomt some hairs. Feet 
with the tibia about half as long as the tarsus (see note above, 
under the genus). On the edge of the body is a row of con- 
spicuous spines, subcylindrical or subconical, with tubercular 
bases; and on the dorsum, in some specimens, may be scen a 
few others on the median region. 
Female of second stage brown, elongated-elliptical, slightly 
convex. Antenne six-jointed. Marginal spines as in the 
adult, but no dorsal spines. Length, about 3in. 
Larva red, flattish, elliptical; marginal spines as in adult, 
conspicuous. Antenne of five jomts. Abdominal lobes large. 
Adult male brown, rather more slender than in #. hispidus. 
Antenne of ten joints, all hairy; the second jomt much thicker 
than the rest. The last three jomts are not so globular as in £. 
hispidus. On the last five jomts are several knobbed hairs. 
eet slender, hairy; digitules fine hairs. Abdominal spike 
shortish, broad: at each side of the base a tubercle bearing a 
pair of longish sete enclosed in a long filament of white cotton, 
yes four; ocelli two. Length of body, exclusive of spike, 
about sl;in. 
Habitat—On <Atherosperma Nove-Zelandie, Melicope ternata, 
Hleocarpus dentatus, Wellington ; Muhlenbeckia adspersa, Sumner 
Road, Lyttelton; Port Hills, Christchurch ; and Wellington. 
Distinguished from E. hispidus by the feather-like segments 
of the fringe, and by the almost complete absence of dorsal 
spines on the female. The male is apparently almost identical. 
