SUBFAMILY APHINAE 21 
10. 
23. 
24. 
25. 
26. 
27. 
28. 
29. 
Hairs on abdomen minute, hardly exceeding .02 in length and very sparse......-..2.....00c-0-+- if 
airsronpabagomen distinctly, longer thanecO 2.2 ecceecc cere cere eect rnc selinede eeneaccee eee 9 
RCS tC le VO —e SRL OTL OB UD No.) jen eee ate c ee car sree: eet tet Se oil ee Beh glabra 
i as INE SY oe eS ans cen cnen. Gare veatins Ge 5 Sih Be et Sy Ae een Oo) Sane aie eee 8 
AritexitiarapOutelonom li shorter:tham 50 (poe) 23) ccccccec ce teccec tect cae ese ees atra 
mateiiasa bout 2 .iong. Lil much longer’ than’.50) (p. 30) coe eecettaccteee-- sean scares see flexilis 
Hairs on hind tibia of aptera not longer than diameter of tibia................0000--cc0cccceeecceeeeeeeeee ee 10 
Hairs on hind tibia of aptera longer than diameter of tibia...................---:cccc---cecce-seeeeeeeeeeeeeeeee 24 
Hind tarsal II hardly equalling one-tenth of length of hind tibia. 
CONT EWES WB, PE ech ci se A ate pe ee RP a AN fe Si ee Ana Re gE es a curvipes 
Hind tarsal II distinctly shorter than one-tenth of hind tibia. With capitate hairs 
Huppodyranavappendages,= On’ Pinus: (ps: 23) Lees cece obec seccss hose acecectewencteceeedsoboceedecesnee arizonica 
Hind tarsal II one-tenth or more of length of hind tibia; hairs not capitate on body, 
SET AVM YCUEST UTI GRONTOLIUINC BEN EN ch pee tere eta e e sce ons ocean sean etc be dt ees eet ges Pe eae ok 11 
BASEL OLE CUITSCS VW Le WIEM UM QUIS x ctcece cass snccsccensscccpntnsaccteecrenenencieanacedaCensbe dyeencsdvensacotaventvss 12 
EVESHOTTeLathi angle satiimles eV Mc With Um U1S score cose receccn se csostccanast sadduet Secsawscldeaturuvok ataaedeau=censsect codes 15 
Pl ECSBOMEI Cath Die OS (OFM OTS CL peste a ote see one ssc scaeencetensecte tes Seon asesed soe ebesghtt dent caussbercccnesseserese 13 
ETAL SMOMMENINGMtT DidenlO tel ONE CLet hi ari yc Oconee ce teen ecco nc cosas tara co cs ea Pecos ete see re apeo ee ccnccctececetateeses 14 
III not longer than .60. On Pinus edulis (p. 28)........---2..:-:00c--:0eceeee00ee= SB Rei a Td edulis 
Pion eecetian OOM One bids (p> 28) cie-sccccccsteack core csc ce ee ccancene locke concn enccectontactestindeceecnsateeee curvipes 
Hind tibia with hairs stout and blunt. On Picea parryana (p. 27)............--00------ coloradensis 
Hind tibia with hairs fine and pointed. On Pinus ponderosa var. 
Syeragaynd teastre (Geox, CUM see eee A aE Sn re ee schwarzli 
Hairs on hind tibia strongly reclinate, at angle of 30 degrees or leSS........2....0......222-2--eeeeeeees 16 
Hairs on hind tibia at angle of more than 30 degrees with tibia........-...2...--..2.0:c-eceecceeeeeeeeeeees 17 
Rostralel Vee20-23..antennalsv not longer than IV (p.. 45) q..-2.-c:2-<-c-c.-ccececesco-cssssaceeees~ schwarzii 
Rostralwiv a26--35-antennal Vi longer than’ IV) (p.. 50) icc. fscecocoesasacoec-ceeeceene-sencececueas cece thatcheri 
PRRs OEE LAE 0, 4551 SOOT) yo Lyre aces. ates eS Vasant che open sven tesss enna sai aezarwvaddencdovaeenteemnieloeseesioe fornacula 
HE Teasencd etal eS cl Lemme 2 oO) eee Ct es oadc rscccccce caussaceeatsldedsninsh aaeac dadeeecyercrsevacacvoreataeee 18 
(Bb era) TETAS) TUE SAT PI Goh FN eee ee ores cetera ee ae ea SpE burrilli 
PMS HOLcetmOreTALe ys OTP CEeth ales Deis ee sccs once scar ones vent oe oc ences onc nceecceces save cub--cns-2aieencanaeeseassensey 21 
SOUT Waele GUyerRaaTe TRoR ee oY seed ecko eee ee Oe Met ee Ere 19 
Hairssonehind_tibia about .08 long, semi-spinelikes.-....2--.<2:-.-ccccceccqeececcccee scene eeee-scaseeesecscseseusne 20 
Hairs on hind tibia not longer than .05, spinelike (p. 25)........-.-----.---s:--:e:eseseeseeeeees brevispinosa 
Hind tarsal II .45 long, exceeding fifth of length of hind tibia (p. 31).........-........- tornacula 
Hind tarsal II .28 long, shorter than fifth of length of hind tibia (p. 34).......... medispinosa 
Hairs on hind tibia of aptera hardly half as long as diameter of tibia (p. 22)......-...-.-.-- apini 
Hairs on hind tibia of aptera longer than half diameter of tibia........-...--.-----------eeeeeeeeeeeees Ze 
Texeemelh UN TEL) NYP ADYP eee ee eR POS Oe re ee eect PE 23 
EST EV 30) OCFITIOTE 14 Ds, 49) Lic caceeen sa aviercn tin ones nt tne apn se noose snkincetbatens une usnn ete nneastnnearanetieaewenete tanneri 
MT MY MN a 4 pW setae sno s ko akg sec pene naga anon ca cedantendet eta acecteoaetioetaaneact pseudoschwarzii 
Rostral IV .16-.18; dorsum with powdery pattern. On Pinus (p. 51).....-..----- Stites ae villosa 
Rostral IV .16; dorsum without noticeable powdery pattern. 
By eas oT By SO) seam ohn sas seems te dans a evox vn abate cn ces clown a eoRce ecan panne taemeinar enn ssnese vandykei 
Rostral IV .18-.21; dorsum with powdery pattern. On Pinus. (p. 40).....-...------.-- ponderosae 
Hairs on hind tibia of aptera once but less than twice as long as diameter of tibia........ 25 
Hairs on hind tibia of aptera twice or more times as long as diameter of tibia................ 35 
Cornicle, at base, not more than .20 in diameter .......-..-----------------s:es-eeescesesceeeeceeceteeceenteeeeteananees 26 
Cornicle, at base, more than .20 in diameter......--.--.----------------c20-c-neeeeeeeceseececeteeeec ere ceteteeneneenenanees oT 
Hind tibia in aptera longer than half body; rostrum about as long or longer than 
body. On Pinus, on cones (p. 37).-...--------c--ccceececseceeetsececseeeseenenenecesesecosesesneneneneneseannesens oregonensis 
Hind tibia in aptera longer than half body; rostrum shorter than body (p. 39)......piceicola 
Hind tibia in aptera not longer than half body; rostrum shorter than body. 
On Sabina scopulorum (p. 44) ....--:-::1sccecccecceeeeececceeceneeeeeesesecececaceenennenenessacenasecaesenecannanes pulverulens 
Tibial hairs at angle not exceeding 60 degrees. .......------.-----------neeeeceeneneeeeeeteeseenencenetenenenentesenecs 28 
Tibial hairs at angle exceeding 60 degrees. ......-.----------s---c:c-ceceeeeenenenenentenetetecteeateteceennenameensnsnes 32 
Hind tibia fully two-thirds length of DOdY........--.--------::::---cecececeeessecereteneeteesensneeecenennnnnnenenenenses 29 
Hind tibia less than two-thirds length of bod y............-------------:-2:sceeeceecesceneseneeneeteneenenscnnnecenenentes 30 
Rostral IV not longer than .25; hind tarsal II .28 (p. 35)....-.-----.-:-----e-esseseeeeeeees murrayanae 
Rostral IV longer than .25; hind tarsal II .28 (p. 99) tetas Beatie a eee hottesi 
Rostral IV .24-.29; hind tarsal II .40-.50. (p. 34) -------2-------------csecereseeseseceeesensesnsnsecens lasiocarpae 
