rytone delaware: dos Passos 1964:8 (No. 86). 
Illinois records.—Map 8. 
The Delaware skipper has been recorded from scat- 
ed localities throughout Illinois. It probably occurs 
er the entire state but is not common. Females super- 
ally resemble the male of Problema byssus. It is 
ybably single-brooded, June 17 through August 30. 
Atalopedes campestris (Boisduval) 
Sachem 
Speria campestris Boisduval 1852:316 (type-locality 
“California’’) . 
sperta huron Edwards 1863a:16 (type-locality “Illi- 
nois, Georgia, Texas, Washington, D. Cage 
mphila huron: Worthington 1880:49. 
lopedes campestris: Holland 1931:385; Klots 1951: 
243; dos Passos 1964:9 (No. 87). 
Illinois records.—Map 9. 
This insect is common and generally distributed 
oughout Illinois. It is a characteristic species of late 
amer and autumn. We have records from May 23 
obably overwintered individuals) through November 
with maximum abundance in August and September. 
Pompeius verna (Edwards) 
Little glassy wing 
nphila verna Edwards 1862a:57 (type-locality “Tlli- 
nois; Washington [D.C.]’). 
nphila pottawattomie Worthington 1880:50 (type- 
locality “Chicago, Illinois; Lake County, Indiana’). 
nphila verna: Worthington 1880:49. 
ites verna: Holland 1931 :380; Klots 1951:245. 
npeius verna: dos Passos 1964:9 (No. 88). 
Illinois records.—Map 10. 
P. verna is common and generally distributed 
ughout Illinois. According to Klots (1951), verna 
ingle-brooded, but we have records from May 12 
ugh September 9, indicating the possibility of a 
md brood. The skipper becomes most common in 
-June and remains numerous through mid-July. 
Wallengrenia egeremet (Scudder) 
Broken dash 
peria egeremet Scudder 1864:174 (type-locality 
pe achusetts, Georgia, Western States, New Eng- 
and”), 
iphila egeremet: Worthington 1880:49. 
a otho egeremet: Holland 1931:386. 
lengrenia otho egeremet: Klots 1951:248; dos Pas- 
‘0s 1964:9 (No. 89b). 
[llinois records.—Map 11. 
The broken dash is a common skipper throughout 
01s. Most authors consider it a subspecies of W. otho 
E. Smith), but Forbes (1960) gave it full specific 
and illustrated genitalic differences which appear to 
istinctive. Dr. L. J. Paulissen informed us (personal 
munication) that otho and egeremet occur together 
kansas “with no apparent or obvious intergrading, 
terion of speciation.” W. egeremet is single-brooded. 
ave records from June 2 through August 17, 
Polites coras (Cramer) 
Peck’s skipper 
Papilio coras Cramer 1775(1) :51 (type-locality ‘“Suri- 
nam’), 
Hesperia peckius Kirby 1837:300 (type-locality “North 
America’). 
Pamphila peckius: Worthington 1880:49. 
Polites peckius: Holland 1931:382; Klots 1951:246. 
Polites coras: dos Passos 1964:9 (No. 90). 
Illinois records.—Map 12. 
This skipper is exceedingly common and generally 
distributed throughout Illinois. P. coras and the next 
species are the most abundant skippers of the state. Ear- 
liest and latest dates are April 16 and October 3. 
Polites themistocles (Latreille) 
Tawny edged skipper 
$Papilio taumas Fabricius (nec Hufnagel) 1787:84 
(type-locality “North America’). 
¢Papilio thaumas Fabricius (nec Hufnagel) 1793:327. 
Hesperia themistocles Latreille “1819” [1824]:769 (type- 
locality “southern America”). 
Hesperia cernes Boisduval & Le Conte 1834: Plate 76 
(type-locality “North America’) , 
Pamphila cernes: Worthington 1880:49,. 
Polites taumas: Holland 1931:381. 
Polites themistocles: Klots 1951 :245; dos Passos 1964: 10 
(No. 95). 
Illinois records.—Map 13. 
Like the preceding species, P. themistocles is very 
abundant and occurs throughout Illinois. Records are 
at hand from April 29 through September 29. 
Polites origenes (Fabricius) 
Cross line skipper 
Hesperia origenes Fabricius 1793:328 (type-locality 
“West Indies’’). 
Hesperia cernes Harris (nec Boisduval & Le Conte) 
1862b:316 (type-locality “Massachusetts, Southern 
States’). 
Hesperia manataaqua Scudder 1864:175 (new name). 
Pamphila manataaqua: Worthington 1880:49. 
Polites manataaqua: Holland 1931:380; Klots 1951:245. 
Polites origines: dos Passos 1964:10 (No. 96) (lapsus 
calamt). 
Illinois records.—Map 14. 
P. origenes is far less numerous than themistocles, 
which it closely resembles, but is still of fairly frequent 
occurrence. Records, although scattered, indicate a gen- 
eral distribution throughout Illinois. Dates of capture 
are from June 4 through September 1. 
Polites mystic (Edwards) 
Long dash 
Hesperia mystic Edwards 1863a:15 (type-locality “Con- 
necticut, Michigan, Canada West”). 
Pamphila mystic: Worthington 1880:49. 
Polites mystic: Holland 1931:383: Klots 1951 :247; dos 
Passos 1964:10 (No. 97). 
Tilinois records.—Map 15. 
