g in numbers all other butterflies during the height of 
; flight period. T. lineola occurs in many habitats and 
is been taken in vacant lots and along railroad tracks 
ithin the city of Chicago. The species is single-brooded, 
ypearing shortly after the middle of June (earliest date 
ine 15). It quickly reaches a peak of abundance, then 
adually diminishes, and disappears about the middle of 
ily. The latest date of capture is July 14, but few speci- 
ens have been noted after the first week of July. It 
ll be of interest to note the possible effect on our 
tive grass-feeding skippers of the increase and spread 
this species—comparable, perhaps, to that of Pieris 
pae on the native species of that genus. 
Oarisma powesheik (Parker) 
Powesheik skipper 
esperta powesheik Parker 1870:271 
“Grinnell, Iowa’’) . 
wisma poweshetk: Holland 1931:360; Klots 1951:231; 
dos Passos 1964:14 (No. 127). 
The only evidence of the occurrence of this skipper 
Illinois is found in Dodge (1872). In the original 
scription of Hesperia illinois (= Euphyes bimacula), 
said: ‘“This species [zlinois] was discovered by Mr. 
A. Dodge, in Burcan [Bureau] County, Illinois. The 
st specimen was taken June 20, 1872. It was quite 
undant upon grassy slopes on the high rolling prairie 
at forms the divide between the Illinois and Rock 
ers... Two weeks later Hesperia Powesheik, Parker, 
peared abundantly in the same locality.” Klots (1951) 
ributed O. powesheik to northern Illinois, possibly 
the basis of this record. Blatchley (1891) recorded 
from Whiting, Lake County, Indiana, saying that it 
“a western species not before recorded east of Illinois.” 
French (1879) and Worthington (1880) did not list 
weshetk from Illinois, despite the earlier record of 
ge, but they did include “Thymelitus” garita (Rea- 
t). The two species are congeneric and have been 
nfused in the past. We regard it as probable that these 
thors referred to powesheik; it is unlikely that true O. 
rita occurs as far east as Illinois. 
The area described by Dodge has not been well col- 
ted, and powesheik may still occur in local colonies. 
the absence of specimens on which the Dodge record 
s founded, the possibility that they were incorrectly 
ntified cannot be ruled out, although it is difficult 
imagine with what other insect Dodge could have 
founded this distinctly marked form. 
(type-locality 
Ancyloxypha numitor (Fabricius) 
Least skipper 
Speria numitor Fabricius 1793:324 
“West Indies”) . 
cyloxypha numitor: Worthington 1880:48; Holland 
1931:367; dos Passos 1964: 14 (No. 130). 
cyloxipha numitor: Klots 1951:231. 
cyloxypha longleyi French 1897:80 (type-locality 
“Ridgeland, west of Chicago, Illinois’) . 
Illinois records.—Map 18. 
Phis diminutive skipper is common and generally 
tributed throughout Illinois. It occurs principally 
Ong tall grasses bordering streams and_ roadside 
ches. There are at least two broods, with dates from 
(type-locality 
11 
May 18 through September 28. French applied the 
name longleyi to the color variety, frequently occurring 
with typical numitor, having the fore wings solidly black. 
Lerema accius (J. E. Smith) 
Clouded skipper 
Papilio accius J. E. Smith 1797:45 (type-locality “| prob- 
ably Screven County,] Georgia”). 
Lerema accius: Holland 1931:396; Klots 1951: 260; 
dos Passos 1964:15 (No. 134). 
Illinois records—JacKkson County: Carbondale, 
August 24, 1880, French (AMNH via A. B. Klots). 
More intensive collecting in southern Illinois would 
probably reveal that this species is found in the extreme 
southern counties as a casual adventive. 
Nastra lherminier (Latreille) 
Swarthy skipper 
Hesperia lherminier Latreille “1819” [1824]:777 (type- 
locality ‘“Carolina’”’). 
Hesperia fusca Grote & Robinson 1867a:2 (type-locality 
“Atlantic District’’). 
Megistias lherminieri: Holland 1931:395. 
Lerodea Vherminieri: Klots 1951:266. 
Nastra lherminier: dos Passos 1964:16 (No. 157s 
Illinois records—Mapison County: Alton, July 26, 
1941, Lauck, (GW). Pore Country: Lusk Creek, near 
Eddyville, July 31, 1967, August 5, 1967, Downey, deter- 
mined by H. A. Freeman (INHS). Verminion County: 
Danville, August 20, 1967, Irwin, determined by HiaeAs 
Freeman (INHS) (Fig. 1). 
This small and undistinguished species is probably 
commoner in the southern portion of Illinois than the 
few records would indicate. It may be overlooked be- 
cause of its diminutive size and drab appearance. 
Pholisora catullus (Fabricius) 
Common sooty wing 
Hesperia catullus Fabricius 1793:348  (type-locality 
“West Indies’) . 
Pholisora catullus: Worthington 1880:49: Holland 
1931:345; Klots 1951:218; dos Passos 1964:17 (No. 
148). 
Illinois records.—Map 19. 
This butterfly is common to abundant everywhere in 
Illinois, even in urban areas. Its several hosts, princi- 
pally lamb’s-quarter (Chenopodium), favor disturbed 
soils (Shapiro 1966). It is double-brooded. Extreme 
dates are April 24 through September 10, but most 
records appear during the summer months of June 
through August. 
Pyrgus centaurae wyandot (Edwards) 
Grizzled skipper 
Hesperia wyandot Edwards 1863a:21 (type-locality 
“Long Island [New York]; Washington, D. C.”). 
Hesperia centaurae: Holland 1931:340. 
Pyrgus centaurae wyandot: Klots 1951:215; dos Pas- 
sos, 1964210) (Noto /b)e 
Illinois records—Cook County: Chicago, no date 
Schlieter, (FMNH ex A. L. McElhose collection) . 
