322 



[December, 



A NEW SPECIES OF ALEUEODES. 



BY J. W. DOUGLAS, F.E.S. 



Aleueodes EUBICOLA. 



(? ? . Pale golden-yellow. Antennae (fig. 1) paler, of 7 joints, the 1st Tcry 

 small ; 2nd more than twice as long, stout, subpjriform ; 3rd thinner, longest of all, 

 nearly as long as the following four together ; 4th half as long as 5th, which is 



one-third the length of 3rd ; 

 6th and 7th each consecu- 

 tively shorter. Eyes large, 

 oval, black, facetted in rows, 

 near the middle a triangular, 

 granulose formation projects 

 from the outer side, opposite 

 the base of each antenna, 

 half-way across the eye, so 

 that the anterior portion of 

 it is smaller than the pos- 

 terior (this formation quite 

 disappears under treatment 

 with caustic potash, leaving 

 the eye entire) ; rostrum 

 *^long, dentate at apex, which 

 only is black. Legs as usual 

 in the genus ; posterior tibiae 

 twice as long as the tarsi, 

 1st joint of tarsi the longest. 

 Wings clear milk-white, spot- 

 less. Genitalia of S , fig- 4. 

 Expansion of wings, $ , 2 

 mm., S rather less. 



Larva immature (fig. 2). Broad-short-oval, the marginal fringe of secretion 

 distinct ; the dorsal region with three pairs of long hairs, very pale and difficult to 

 see, and one pair at the posterior margin ; the six dorsal hairs are specially charac- 

 teristic. These larvae, about half-grown on August 24th, are transparent, of the 

 colour of the under-side of the leaves on which they rest, and may be easily 

 overlooked. 



Larva mature (fig. 3), September 24th. Pale greenish-yellow, flat, broadly 

 rounded oval ; marginal area wide, thin, delicately striate transversely ; on the outer 

 sides anteriorly, shallowly or deeply incurved (at times, in the most advanced indi- 

 viduals, this amounts to an angular notch), indicating the posterior of the thoracic 

 region, whence a distinct yellowish line extends quite across the marginal field (in 

 some examples also are two or more marginal indentations irregularly placed pos- 

 teriorly, but these have apparently been caused during growth by inequalities on the 

 surface of the leaf) ; within this marginal space the outline of the body of the insect 

 is denoted by an oval ring of raised, connected, white granules, and within this ring 

 is a series of small, white, granulose, transverse ridges, highest in the middle, indi- 



