806 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



This insect is injurious in the Western States, according to Eiley, 

 who describes and figures it in his Fifth Missouri Report. The disease 

 to which it gives rise is sometimes called the " white malady." Riley 

 states that it produces two broods a year in Missouri, i. e., one in July 

 and again in October. It occurs on the white pine, red pine, Bhotau 

 pine, yellow pine, and Cembra pine, and sparsely on different species 

 of imported pines. I have also noticed it at Brunswick, Me. 



147. The pine inhabiting aphis. 



Aphis pinieolens Fitcli. 



Found solitary on the pine. Straw yellow, densely covered with white 

 powder ; antennae black, bases pale, with a dusky ring ; fore wings with 

 a fuscous spot on the tip of each vein ; t. veins brown, hyaline at their 

 bases, the costal one straw yellow ; honey-tubes very short. Length to 

 tips of wings 0.25 inch. 



This probably belongs to another genus, but I am unable to place it 

 from the short description given by Dr. Fitch. Such is also the case 

 with reference to the preceding species, which possibly belongs to Chaito- 

 phorus, and may be identical with my Ch. populicula. I give them as 1 

 find them, with the hope that some one into whose hands this report falls 

 may be able to settle this point satisfactorily by finding the species. 

 (Thomas, 3d, Rt. Ins. 111.) 



148. Lachnus australis Ashmead. 



This plant louse, according to Mr. William H. Ashmead, in Florida 

 clusters upon the new and tender branches of the southern pine {Pimis 

 australis), which they puncture with their remarkably long beaks, 

 causing the sap to exude, and the branch upon which they exist to 

 become gummy and sticky. Mr. Ashmead has bred from it three 

 species of ichneumons, two of them allied to Aphidius, and the third a 

 Chalcid parasite. 



Wingless female. — Length .08 to .16 inch. Uniform light brown ; head small ; eyes 

 large and round, bulging out on each side ; beak extremely long and slender, reach- 

 ing to the last ventral segment ; antennse 6-joiuted, reaching to the hinder part of the 

 thorax ; joints 1 and 2 bead-like ; third longest, widest at apex ; thorax twice as wide 

 at hinder part as the head ; abdomen very broad, wider than long, with numerous 

 black spots on top, arranged in transverse rows ; nectaries (honey-tubes) black, 

 tuberculous, nearly obsolete ; legs very long, setaceous, and black, excepting basal 

 third of tibiiB, which is yellowish. 



Winged male. — Blackish. Length .08 to .10 inch. Expanse of wings about .35 

 inch. Head black, punctate, outer margin pale yellowish ; prothorax dark brown 

 or blackish, greenish yellow along the suture next the head ; antennje short, reaching 

 below the middle of the thorax ; mesothorax beautifully marked with pruinose bands, 

 starting from each comer of the scutellum,. which is transverse and pruinose; they 

 curve inwards and meet on top of the mesothorax, forming one baud, which runs 

 straight forwards, dividing again obliquely into two bands, to the juncture with the 

 prothorax; two pruinose dots on each side of this band; wings hyaline, front pair with 

 a very long, thick stigma, with the third vein remarkably thin and three-branched ; 

 hind wings with two oblique veins ; abdomen with a dorsal row of whitish or i>ruino8e 



