HEMIPTERA OF COLORADO. 
119 
Aphis cerasi Fabr. 
R^w rt r,! 1S ’ JuIy 16th 011 under side of leaves of Early 
Julv?8fh d , T’- 11 ? 7 Undant ' Hotchkiss, Delta County^ 
Aphis eerasifoii!7ritch. f lVldUal 0 “ theSA ™ ho ^ Plant (Cowen). 
Rist Canon, July 19th on under side of leaves of Pr 
virgimana, causing them to curl (Cowen). 
Aphis chenopodii Cowen n. sp. 
unus 
expZeS SelT 'T™ 10 * Style> U ° t0 AUr 
thorax green. Antennae strongly annulated wltl^rfew 1,11 ] 01 ' fC’- appenda = es 
numerous irregular sensoria succeeding inintoivFp h 7 s 1 hort hairs > th ird joint with 
sensoria except the usual ones at tins oVinint « v °^ S ?1? U ? US y less diameter and without 
V 0.16 mm., VI 0.12 mm VII o^4 to n LT VI; doints 111 °-30 mm., IV 0 .16 mm., 
antennae. Beak about reaching the seen a m ’ 7 Utal elevation occurs between the 
or obsolete. Cubital obsolete for onlv« C ° Xa< T Thorax arched, lateral tubercle small 
branch midway. Sagma rounded -it ver y s 10rt distance at base, the base of second 
Honey tubes 012 mm distinctly ^ 6nd into the subcostal. 
Style constricted towards the base with a few 7 7 ■ dlstance from base than at base, 
at joints, shafts mostly lighter htnid with ,7 ' hairS ’ °‘ 14 mm * in length. Legs black 
Length 1 . 60 - 1.80 mm Oral and nlnn 7 7”* Tarsi 0-14 mm. Apterous female: 
— joint longest, ^ut 0,0 mm.. 
F °rt Collms and Hotchkiss, Delta County, in July, in 
pseudogalls on Chenopodium album, formed by the Aphids 
locating on the upper surface of the leaf, causing the ed<*es 
to curl together. 
Aphis eriogoni Cowen n. sp. 
and thorax black, abdomen lighter “so f 7l y , 1,5 . 0 t0 tlp ° f wings 2>7u mm - Head 
with black joints. ' Antennae about twr/tw'" 777’ femora mostl y black, tarsi white 
IV 0.20 mm V o 14 mm v n no Vrr * the length of the body, joints III 0.40 mm., 
branch of cubital midway Sti-maS‘l 7 °' 18 Beak reachin ” third coxae. Second 
basal end and acute at outer end r T aniforml y- Stigma long, attenuate at 
quadrangular natch of V p 7 7 Border <)f abdomen nearly completely black, a sub- 
log, ZX Tolir'ZZu-?°r, tubesoi ° -- 
dark pvp« ln^o-p,. 1 ous individuals. Smaller individuals bright red with 
of the antennae quiteTp^rent^ y Abd a o C me COn, ^ ona ' SensoTi * 0,1 third and fourth joints 
below often niTll! Abdomen with lioney-comb like reticulations above and 
mm in diameter Head 777 ? by a White secretion - Interspaces about 0.02 to 0.03 
The winged SdWduS show^h?" f- re , tlculated - Some Parts of the thorax reticulated. 
wingea individuals show this reticulation, but in much less degree.” 
Horsetooth Mountain, July 24th, a good sized colony on 
the stems and inflorescence of Eriogonum altatum. Speci¬ 
mens of apparantly the same species were collected at 
bteamboat Springs, .July 13th on Eriogonum umbellatum 
, a rer). These are somewhat smaller in size, perhaps due 
to alcoholic preservation (Cowen). 
