SUBFAMILY APHINAE 63 
Key to Genera of Panaphina 
1. Hairs prominent (fine, .05-.10 long) on antenna and cornicle. (p. 79)-......0::0::0000- Panaphis 
PEA GIT S NOL Prominent Onantentavana vCOLNICLE teciccceee ccore eects e nce eee a eee escent 2 
PME DCOMGAIPIDELCLeS NOE EX CEECINE  VELteX seb sec cas sccnsctrs Ne eet ed ve ote cecca cu cohctin vos naenl siniiecoesdecuauece 3 
meee Dc OntaletuberclesvexCe eG in ay ELt ex! cere core oes re eee coe sa ccdsns caceescbe scabsomecese sueuses isaacs sat ledesbuooses 6 
SPO tialprateraistinctlys divad edyofspilob ed, cices cc. n esse csc cqeceern ck users cece esa ateec back absessevAces seuccoavseatotese 4 
PePAtADlatesOnlyeslight|yaindented fOMmentih ec. cc-csse cscs ete ent ee ccc b coo cet chsmecSaav sa stcae cone Wacceavsisataes suas 5 
amecorniclentairiy: well-developed, .trunCate eC ps 07.0) Sse cn seccoe coca cove ccweccccbdesasdnaccestnntes Myzocallis 
Gorniclesaineres pores (ps O9)) eecme eee tee ee e  oe eee EL Be 55h cidaaecesiabezelacens Monellia 
§. Imbrications on antenna or cornicle denticulate; unguis at least half as long 
PAG TOYS er ANAS PG ols VA aI) ete e rsh see en ee ae ers ers ee Sa Re eee Neosymydobius 
Imbrications not denticulate; unguis less than half as long as 
BOOS LOC Bic Od Scie lerevc ees ete tar co tices netag EM aa esate tne Soest ret oue ab der Seas a sae ooci tees Uae stars Chromaphis 
CmemEL ALEST CAD TALENT IN t a lat aw 020 0 0: eee cee rene rcs eee ach ote ae eS an ora ge on ds Melssidu geen ete cece Cepegillettea 
Pima Senroteca Dit ate lied: atc mete ee oe enh ere re A ek sli ek, ie es Ack 7 
fmeSecondaryasensoria circular or Ovals hairs capitate OF POINte doce, --ccccras-tsc/cceocsseeus case sceseseenceess 8 
Secondary sensoria transverse, more or less narrow; hairs minute and not capitate 
EVEnmall ta Dtera nl DINOS a eae estes ae irs ge eles LN Seats aa Euceraphis 
8. Cornicle not on mammiform base; hairs capitate in nymph and 
ABDC Kreme OS) O53) pret eee eee Sere Ere ta oe chnce esse CaN a Set ee NR A edo ou vegavsssaoacsath Calaphis 
Cornicle on mammiform base; hairs short, not capitate in aptera (p. 78)........ Oestlundiella 
Genus Calaphis Walsh 
Walsh 1862:301; Baker, 1920a:26. 
Characters. Frontal tubercles well developed; vertex not produced. Hairs 
on vertex and body capitate and long in aptera and nymph, short and blunt in 
alata. Antenna longer than body, with minute spinelike hairs, unguis much 
longer than base of VI; secondary sensoria subcircular to circular, present in 
both apterous vivipara and ovipara; permanent sensorium at base of unguis 
long-oval and with cilia. Fore wing with veins somewhat smoky; radial sector 
faint or absent. Cornicle short, truncate. Cauda knobbed; anal plate bilobed in 
viviparae. Both cauda and anal plate with numerous stout hairs. Living on 
leaves of trees, more or less solitary. 
Genotype (monotypical), Calaphis betulella Walsh. 
Key to Species of Calaphis 
PV ALDOUt AUSILY. Tart oS iris VAN Up aT ag scceses ce eee e coe aan ceca nero n ce as ca sactaennanesobeaedneeese eensndet ta 3 
WM PERE CUS TIN Gtr USK VrIN ALK RINE Sete eee eran sarees decw iss on Seeetees acest eee av eaten Ge osths ceamontiet oaseta cs aeoeeemtoneoceseecenncs 2 
2. With conspicuous vittae in alata, dusky speckles in aptera; hairs capitate and 
lonpsin apteray pointed and minute imialata (Cp. G3 )cscc2-c2:ce--sepeccs=ce-c--oe-ceeecssteccnees-eetesenees betulella 
Without vittae but with dusky bands on all segments in both alata and aptera; 
hairs pointed and long in aptera and alata (p. 76)............-.....0.- (Neosymydobius annulatus ) 
PES EMSOCTATON UN OLrAlata ra tee a St ieee ek ee hae ie Does cr ee ee ree ae Hein ae ae renecee a acaetenar ete eee 4 
pueoenucoria on til of alata not more than 8 (pi 64) q.2c.2c.eec i esc een cotadedcensennseees coloradensis 
4. III shorter than .80; first sensorium on III of aptera only .04 mm from base 
BL LEE TG TTTCDY cane, Meee be REN a ca ty UN ale OUI | SY hy er MORO a ae ge AU Sarr ear EOP viridipallida 
III not shorter than .80; first sensorium on III of aptera about .10 mm from 
SEROUS E DINTETI CR p50 oy eects meee ree ccc eee ee Inet es PL eee tate ee Pde oeee ee granovskyi 
[Genotype Calaphis betulella Walsh] 
Calaphis betulella Walsh, 1862:301; Baker, 1916b:185 
Alate Vivipara. Yellowish, with three black vittae over head and thorax, and black 
bands bordering anterior and posterior margins of abdominal II to VI; femora pale with 
black vittae and fasciae; tibiae and tarsi black; fore wing with stigma and veins narrowly 
margined with black and smoky at tips; radial sector obsolete, media twice-forked. Body 
length 2-2.5; hind tibia 2-2.25; hind tarsal II .15; antenna 3.6-4. Cornicle faintly imbricated. 
Hairs pointed .03-.05 long on body and legs. 
Host. Leaves of Betula sp. (Not yet recorded from region.) 
Type. Lost. Neotype, selected by Hottes, Ill. Nat. Hist. Surv. Collection, No. 4657. 
Determination of specimens used in this description was aided by opinions of Monell and 
Pergande. 
