428 ATTEMPTED DIVISION OF BRITISH INSECTS. 



Stirps. — COCCINA. 

 Natural Order. — Coccites, Gall-insects. 



Antennas hirsute, long, moniliform, many-jointed ; fore-wings semi- 

 coriaceous, of uniform substance ; hind-wings wanting, or replaced 

 by appendages similar to the halteres of Diptera ; legs of uniform 

 structure, not formed for leaping ; tarsi two- or three-jointed in 

 the male, with a single joint in the female ; tail furnished with 

 two long setae. The females are apterous, and attach themselves 

 to the bark and leaves of trees, on which they deposit their eggs, 

 covering them Avith their bodies ; in this situation the female re- 

 sembles a gall, or casual excrescence of the plant. Coccus, 



Stirps. — Aphina. 



Natural Order. — Aphites, Plant-lice. 



Antennaj conspicuous, elongate, seven-jointed; fore-wings deflexed, 

 meeting over the back with a straight suture ; hind-wings much 

 smaller and shorter ; all the wings membranaceous ; legs of uni- 

 form structure, not formed for leaping ; tarsi two-jointed. Infest 

 all vegetables, sucking the sap : reproduction without union of 

 sexes for many generations. Aphis. 



Situation at present doubtful. 



Natural Order. — Aleyrodites. 



Larva oval, flat, and scale-like. Pupa changes within the skin of 

 larva; is quiescent. Imago, with the antennae filiform, con- 

 spicuous, and six-jointed ; wings equally developed, both as 

 to length and breadth, covered with a white, mealy substance 

 like the scales of Lepidoptera ; legs of uniform structure, not 

 formed for leaping. Sits on the under-side of the leaves of the 

 plants on which the larva feeds. Aleyrodes. 



Division III. — Tetraptera Anisomorpha. 



Larva and pupa possessing no uniform mode of metamor- 

 phosis, but assuming, in diiferent Orders, that of other 

 Divisions. 



Class I. — Neuroptera. 



Larva, with strong corneous mandibles moving horizontally, 

 and six articulate feet, situated in pairs on the second, third, 



