102 HALIDAY ON 



Sp. 35. A. Eglanteriae. Fem. Niger abdominis basi flavo- 

 ferruginea, pedibus concoloribus fusco variis, antennis 

 circiter \5-articulatis. (Long. .07 — .1 ; alar. .14 — .18.) 



Fem. — Os palpique picei : antennae 14-, 15-articulatae nigra? : collum 

 ferrugineum aut thoraci concolor : femora latere externo, tibiae 

 medio, tarsi apice, plerunque etiam coxae posticae infuscatae : ab- 

 domen piceum petiolo flavo-ferrugineo rarius infuscato, segmenti 

 secundo medio et incisuris anterioribus flavescentibus. — Mas, 

 niger pedibus fuscis, anticis subtus et geniculis omnibus lutes- 

 centibus : abdomen obscurius quam femince. 



Prodiit mini ex Aphidibus Rosce Eglanterice. h —(Mus. Soc. Ent.) 



Sp. 36. A. Salicis. Fern. Niger, pedibus anticis et geni- 

 culis Jerrugineis, abdominis litura pallescente, antennis 

 13-articulatis. (Long. .08 — .1 ; alar. .15 — .18.) 



Fem. — Os sordide lutescens : antennae capite cum thorace parum 

 longiores, apice subcrassiores : alae hyalinae stigmate lutescente, 

 in exsiccatis piceo, nervis dilutius fuscis : pedes anteriores obscure 

 ferruginei, intermediorum femora basi, tibiae medio tarsique fusci, 

 postici fusci trochanteribus et tibiis basi apiceque ferrugineis : 

 coxae omnes nigrae : abdomen segmenti secundi medio et inci- 

 suris, vel plaga media effusa pallescente : petiolus fuscus aut 

 piceus. — Mas, color pedum et abdominis sordidior : antennae 15-, 

 16-, rarius etiam 17-articulatae : alae albicantes. 



Habitat in Salice autumno exeunte frequens ; e cujus Aphidibus 

 quoque prodiit mihi, Junio mense. i (Mus. Soc. Ent.) 



Adsunt individua minora in flosculis Dauci Carotce copiose lecta 

 vix propriae speciei. k 



SECTIO V. — EXAREOLATI. 



Palpi maxillares 4-, labiales 2-articulati : stigma latum : areola 

 penitus effusa : cubitus abruptus, stigmatis vix dimidia. longi- 



frequents ; it would be remarkable that a species so closely resembling the pre- 

 ceding and the following, should be attached to such dissimilar Pucerons. 



h These Pucerons become glossy white, fixing themselves on the under-side of 

 the leaves. 



1 The wounded Pucerons of willows usually retire to the points of the leaves, 

 and become hazel or light-brown. Of the multitudes thus infested, the majority 

 fall victims not to the present insect, but to two minute species of Cynips 

 (C.fulviceps, Curt, and another): the former of these, with some allied species, 

 destroys also the Pucerons of cow-parsnip and other plants. 



k There are several still smaller species closely allied to this, as A. Funiculi, 

 A. viminalis, &c. 



