Illinois Natural History Survey -3- Identification Notes 3 
7. Base of palpal segment II drawn out to an angle at the outer sides, 
fig. 5 «- adults and nymphs of Haemaphysalis leporis~palustris 
Base of palpal segment II not drawn out to an angle at the outer 
BACCSSaeuiswibes eee LA a EROS CER EN O Oe Oa eeeeleebeseeéncecesee eric 
8. Base of capitulum (BC) sharply pointed, figs. 6,7 eeacecseesee 9 
Base of capitulum (BC) not produced into a sharp point, figs. 1, 
5 eeeseceoeoeovpeneeseeeeeaeeseeeseeeeoeeeeooeoeaeseeeoeoeeceneseeae ened 10 
9. Base of capitulum (BC) nearly triangular; palps more slender, fig. 
i Mavsthisignc ces sbedeeesssuwles nymphs of Dermacentor variabilis 
Base of capitulum (BC) hexagonal in outline; palps stouter, fig. 
6 SSHRESTTCOFYLIHO ORO ECOSOC OBE nymphs of Rhipicephalus sanguineus 
10. Upper surface of body with a bright silver-colored spot or 
spots Sedeuesssccenetsscedeeeel G00. tS, 0f Amblyomma americanum 
ee el eed 
Body without silver—colored markingS avccocosccscssovccceseces ll 
lle Without eyes cacsesececcosevcceecess adults and nymphs of Ixodes 
With eyes @eoococaeeaeeseoeeeoeeooeeeseetccereov eevee eeseeeeve2ee ee oe es ihe 
12. Shield containing eyes wider than long SOTHO CFSE E FCoE E HSE HREEED 
Coe SHOHOEHSEHOLOHEEOOOTHO SEES ESO®S nymphs of Amblyomma americanum 
Shield containing eyes longer Bhan Wide saesscenesececesereesegs 
COKECH CCC SEER EOLA REETHOERERS nymphs of Dermacentor albipictiis 
Family ARGASIDAE 
Leathery, warty ticks with each spircaular plate located forward of 
the hind coxa, and with the mouth parts attached on the under surface. 
Areas persicus (Oken) 
Fowl tick 
This argasid tick has not been found as yet in Illinois but may be ex- 
pected in shipments of chickens from the South. It feeds principally on 
domestic fowl, which, as a result, may become weakened and die. 
Ornithodoros kelleyi Cooley and Kohls 
Kelly's bat tick 
This is the only warty tick likely to be encountered in houses in Illi- 
nois. It feeds exclusively on bats and, as far as is known, will not attack 
human beings or their pet mammals or birds, These ticks may be expected 
occasionally in houses which harbor bats in the attic or in the walls. 
