102 HALIDAY ON 



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

 ferruginea, pedihus concoloribus fusco variis, antennis 

 circiter 15-articulatis. (Long. .07 — .1 ; alar. .14 — .18.) 



Fem. — Os palpique picei : antennae 14-, 15-articulatse nigrse : collum 

 ferrugineum aut thoraci concolor : femora latere externo, tibiae 

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

 domen piceum petiolo flavo-ferrugineo rarius infuscato, segment! 

 secundo medio et incisuris anterioribus flavescentibus. — Mas, 

 niger pedibus fuscis, anticis subtus et genieulis omnibus lutes- 

 centibus : abdomen obscurius quam femince. 



Prodiit mihi ex Aphidibus Rosce Eglanterice.''^ —{Mus. Soc. Ent.) 



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

 eulis ferrugineis, abdominis litura pallescente, antennis 

 l3-articulatis. (Long. .08 — .1 ; alar. .15 — .18.) 



Fem. — Os sordide luteseens : 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 nigrse : 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 iT-articulatse : alae albicantes. 



Habitat in Salice autumno exeunte frequens ; e cujus Aphidibus 

 quoque prodiit mihi, Junio mense. ^ {Mus. Soc. Ent.) 



Adsunt individua minora in flosculis Dauei Carotce copiose lecta 

 vix propriae speciei.'' 



SeCTIO V. — EXAREOLATI. 



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

 penitus effusa : cubitus abruptus, stigmatis vix dimidia longi- 



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

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



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

 the leaves. 



' 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. 



^ There are several still smaller species closely allied to this, as j4. Faniculi, 

 A. viminalis, &c. 



