SUBFAMILY APHINAE 287 
16. 
17. 
18. 
35. 
36. 
Sensoria on III in aptera, more than 10, on III of alata more than 20........2...-.--2-c-seeceeeeeeeee 17 
Sensoria on III in aptera fewer than 10, on III of alata fewer than 20....2.......0..2..---e0-eeeee0e-e- 18 
MPCIR RES TOLCe ret avs e ld Ll pss OO) cercee reese acs eee teece reer en toes se Ie ee ee as frigidae* 
Unguis not shorter than III; cornicle longer than cauda (p. 313)........2..220.002000+- ludovicianae 
Unguis as above; cornicle not longer than cauda (p. 323) -........2-.--secceecceeee-eeeceneceeeeeeees sanborni 
Unguis longer than 5 times base of VI; cornicle of alata shorter than .40, 
RRR MEME MU MRSEIE DET CEO TE CM are SSE E Flette pci fence ote eres teas om issisopeacacekekeeetecaschcounecdlneiek, jonesi* 
Unguis as above; cornicle at least .40 in alata, .45 in aptera (p. 305)...........2..-0:-20-00-00- essigi* 
MRCS TAT Oe MISCHEC OTTO IEAI Too CXTITE A WS OG CE VA oaece clastic eae canoes atone sn vols cdsteadexcoacnasnvectiacamete uamanncbees 19 
Cornicle 1-1.5 times length of base of VI (p. 307).............csccscccceccssseeserecscesecececsseeeeeee frigidicola 
RAPUPeRe 7OMee, CAIN Ns TLETES ASS Ok V Me Baca acters cece Meseen cites codecs ceupecnsescssceshinucscsuddonesdustnase 20 
Cornicie twice as.long as base of VI Cp. 293) espn eos yee csteseccnepinduebonaants artemisivulgaris 
Cornicle three times as long as base of VI (p. 293)..............:c222cccesecceeceeescceeseeess artemisiphilum* 
Cornicle notionver than third ‘of! TTI "(ps 326) sesscessccecce to eae eee ce ete sonchellum 
EVABLOMIS Clot trait HEPCmO lp Lb Mercer revere te cate cere ee cee eh Sens ee eS ee das aera ereteencee 22 
Cornicle longer than 4 times hind tarsal IT... cope nae aia i he eli gr 23 
Cornicle not distinctly longer than 4 times hind tarsal [ID ..uw..2.2...2...2...22.esecceeccseeeeeesceeeeneeneeeee 49 
SE ORMUCLCHGISEITICL Ve LOND CLEC arl gl Wcetes tte cece eee een ene eens ae eee ee este hetero eet 24 
COLeTCle NOU GIStINICCI YS IONS OTC aT lL Lr recente ace eae mre cornea na ce datera son satace secsaue tntcmuorse 37 
Sensorlaronsri Or alatasmOc 1 SEN ©. LO Wereccecere ears eeskeaansc een eek takes Ree ects pened seeae esac rede 25 
MENSOLEATONSL PD Olsa Ata AI Sif) pli LO Weeeserreettesaeee eee arcana otceeanar ce ne coc occccseerap endo vataadeneecn eowtere nccsus teres 26 
Sensoria on III in aptera more than 8, in alata more than 17.............2...-:0s:cc-scceeeceeeeceecceeeeeeees 32 
Sensoria on ITI in aptera 1-8, in alata 8-15 (p. 303) ...---.-.0..cseco-2.-s-scoccssscosesseencnssecnesesessonee eoessigi 
Base of VI twice as long as hind tarsal II (p. 243) -..0...0......0.....-cssscseseseceensnseees Amph. stanleyi 
Base orev snorter than twicedenrth of hind tarsal [Esco cse ces eeeceateercccesecetete note soneeesicton 27 
Body Gark Drow! to;Dluisi Or TEdGiShi( pio 12) etree terete anata. caseatiieacatecuraeeee naa kiowanepum 
BES COC VE LTD ete teeter rece ee ce sag at ae aa als SPE See can ast es tase vastenecetechs aateecastenscicurcenstcie 28 
PURE ENIIIAT IONE CLs CL ATLL IOG Yi nee erento ceca a nent cracls terse e seecene Ser nteaceesaatstsoucnse-eduseuctsneapeneerseseuse 29 
AdirernamotslOncer thane DOG Y ) CD: 1510) seccececceecncer pee sarees seen accea eee eoSos seep ccounstevancenssContsencose mentzeliae 
Reticulated area on cornicle about the same length as base of VI..........20.222-----e0ec--seeeceeeeeeeeeeee 30 
Reticulated area on cornicle distinctly shorter than base of VI........................2.ccesesecneeeeseeeneees 31 
ST OLTILCLERD Lac WU ems 20) eee renee ae eee sr ae oan SOMES swede Seat teat ccenteenssoeet pseudoros2e 
Cornicle not black, longer than 1.2 on Rudbeckia (p. 298)...............::sccsss:sscecseeeeseeeees cockerelli 
SEA DOV.E TON COrallOrnizar pst 299 ) re creaccr se ee ee enero cease oacas esnenacdearnecevenccaessenters corallorhizae 
COLTIClEMoOleD lack MSnoLterat han i.e (per S24 ere ccs ee ceeen este ores csk racer aae ese casecerscotectecr racenace solanifolii 
Reticulated area on cornicle hardly longer than half of 
PSST OEM VL eC pre 29 0) eee ae ace cea ae Fe eee nc Ree aac eee eet een gente ane Et os californicum 
Reticulated area on cornicle distinctly longer than half of base of VI; 
sensoria on III of alata at least 14; cornicle not longer than 1.3 (p. 300)........-...-.---.-- creelii 
As above except cornicle longer than 1.3 (p. 298) .......-..---:cc:ccs--ccesecceeseesenceeeeeeeeereeeeesees cockerelli 
Reticulated area as above; sensoria on III of alata fewer 
(ECT (GDB BPR ee ee ee eres belie Naan Slt rte CE aR gala te ers oe gah aie ere ee Le? rudbeckiarum 
Reticulated area on cornicle never distinctly exceeding tenth of cornicle length................ 33 
Reticulated area on cornicle distinctly exceeding tenth of cornicle length........................---- 34 
Cornicleandsantennay black:\(pea2l ees earece tes were sees re cree Ren ee ieee ae rosae 
Sormelerandrantennal nOtiDlacks Cp yto29)) cssreecetesscstes cee ceese et contecn nde caeh nde rasta cees eee teense timpanogos 
Rostral IV+ V .23-.25 long, much longer than hind tarsal II (p. 313).................. Jongirostris 
Rostral IV+-V not longer than .15, about same length as hind tarsal II 
OSL OE DOL cere corse cence ccs ness cates concerts cette ths oe ica caspian aces area Ae Se MEE Leet aoekacla stat ceomustank 35 
Sensoria present on IV in alata; cauda with 2-3 pairs of 
PALET AL HALES S CDR: O54.) fecicccenate meter eeeten cee hee aie nests ak Oe eI On ete zymozionensis 
DersOLiaad DSETICLONe U Virdtl AL UEU AA PAT Crisco cc ci pes ee an sc caeakoas nceusehsan secouve abnaa’cuathoount earmpeaases wedeer aueteaaues 36 
Reticulated area on cornicle extending hardly twice length of rostral IV+V; 
cornicle 4-6 times length of rostral IV+V (p. 304)....2..........c.:scsessssseceeseceeeeeeescenes erigeronensis 
Bare CGSB PAS “Sata se ales San SSIS Be Bled ade gaa eters opPan iy ERC AE EP Coe eR ae RR eR is eg BE escalantii 
*M. coweni, cefsmithi, filifoliae, jonesi, essigi, artemisiphilum, frigidae, albicornum, 
anomellum, flavilum, zerohypsi and zerothermum form a complex in which the species 
so merge together that separation into species is very difficult and even doubtful in 
some cases. Since they all occur on the same species of host plant it may be that all 
belong to one or two very variable species but the range of measurements is so great 
that it seems inadvisable to so treat them, especially since the range of measurements 
given for each species is usually fairly uniform for the individuals of the same colony. 
Occasional individuals which differ from the others in the colony are presumably, but 
not certainly, strays from another species. Biological work~-is needed to settle the 
status of these forms. 
