1775:487 (type-locality “Jamaica’’). 
Papilio cymela Cramer 1777(2) :55 (type-locality “Cape 
of Good Hope’). 
Neonympha eurytris: Worthington 1880:48. 
Euptychia euryta: Holland 1931:180. 
Euptychia cymela: Klots 1951:69; dos Passos 1964: 100 
(No. 646.) 
Illinois records.—Map 97. 
This little satyrid is very common in and near woods 
and is statewide in distribution. There is a single brood, 
with dates of capture from April 3 to August 23. In 
1orthern Illinois, the butterfly generally emerges about 
the last week in May and is common until early July. 
The August date quoted above is very late for the species. 
Cercyonis pegala olympus (Edwards) 
Wood nymph, grayling 
jatyrus olympus Edwards 1880a:31 (type-locality re- 
stricted to “Chicago, Illinois” by Brown 1964:378). 
jatyrus alcpe olympus: Worthington 1880:48. 
Jercyonis alope nephele: Holland 1931: 189. 
Jercyonts pegala nephele: Klots 1951:72. 
vercyonis pegala olympus: dos Passos 1964:102 
656d). 
Illinois records.—Map 98. 
Because Chicago, Cook County, Illinois, is the type- 
cality of C. p. olympus and following the advice of 
. M. Brown, we employ this name for the Chicago area 
opulation of this species and for that of Illinois,as a 
yhole. Nearly all Illinois pegala have the fore wing 
bove dark, with little or no indication of a yellow patch 
r band (Fig. 3). Occasional individuals occur, however, 
1 which this yellow band on the fore wings is nearly 
s well developed as in C. p. alope. These are found in 
ssociation with the dark form, which usually predomin- 
tes. C. L. Remington, however, indicated that the 
ellow-banded form was predominant at Elsah, Jersey 
iounty (CLR). The relationships between the various 
linal forms of this species are as yet imperfectly known, 
nd extensive breeding experiments will be required to 
larify them. 
C. p. olympus is separable only by larval characters 
om C. p. nephele (Kirby), the name usually applied 
) non-yellow-banded populations from eastern North 
merica (see Brown, 1965, 19662). Worthington (1880) 
sted the insect as Satyrus alope Boisduval (sic), with 
ympus as a variety of alope. This implies that both 
llow- and non-yellow-banded populations were. in- 
uded. Edwards (1880a:113) discussed at some length 
© Occurrence of the various forms of this species in 
linois, including the basis for Worthington’s inclusion 
yellow-banded alope in his list. Emmel (1969) offered 
good recent study of pegala. 
C. p. olympus is common and widely distributed 
roughout Illinois. It is most abundant in July and 
ugust in open situations as well as in woodlands. It is 
igle-brooded, with the earliest date June 9 and the 
test September 12. Two very early dates from the 
hicago area, March 28 and May 10, are difficult to 
plain and may be erroneous. 
The alope-like yellow-banded individuals have been 
corded from the following Illinois localities, from all 
which olympus has also been recorded: Cook Coun- 
(No. 
eB) 
Ty: Chicago, September 12, 1947, Kistner (FMNH).. 
FAYETTE County: Ramsey, July 15, 1948, Phillips 
(LSP). Iroquois County: NE of Beaverville, August 
3, 1970, Leeuw (INHS). Jersey County: Elsah 
(CLR). Livincston County: S of Streator, July 16, 
1966, Irwin (INHS). Mercer County: Perryton 
Township, July 1, 1952, Conway (INHS) (hig s3 ek 
Peoria County: Peoria, 1957, August 13, 1960, Taylor 
(TT). RanpotpH County: Prairie du Rocher, June 
27, 1956, Sanderson (INHS). Sancamon County: 
August 12, 1939, unusually well-marked specimen, 
Wright (ISM). The yellow-banded phase is thus seen to 
occur in nearly all parts of the state. 
BUTTERFLIES OF 
POSSIBLE OCCURENCE IN ILLINOIS 
In addition to those butterflies actually recorded 
from Illinois, the following species are considered as 
“possibles” for future inclusion in the state fauna. Some 
have already been credited to the state, but sufficient 
confusion exists about proper identity that we relegate 
them to this probable list rather than to either positive 
records or the erroneous records as given in the con- 
cluding section. Most of the species cited occur reason- 
ably close to our borders, or this state is located within 
their known range of distribution, 
In this section we omit citations of the original 
descriptions, type localities, and references to Holland 
(1931) and dos Passos (1964, 1969a, 1970), giving 
only those to Worthington (1880) if any, and Klots 
(1951). We omit date citations to these works in the 
text for the sake of convenience and brevity. 
HESPERIDAE 
Oligoria maculata (Edwards) 
Twin spot skipper 
Oligoria maculata: Klots 1951:260. 
O. maculata ranges from Florida to Georgia and 
Alabama, straying to New York, Massachusetts, and 
Texas, according to Klots, and may therefore occur at 
least casually in southern Illinois. 
Atrytone arogos (Boisduval & Le Conte) 
Arogos skipper 
Pamphila vitellius: Worthington 1880:49. 
Atrytone arogos: Klots 1951:253. 
This species may occur in the state, possibly as sub- 
species towa (Scudder). The range as given by Klots is 
“Florida and Gulf States, n. to New Jersey, Minnesota, 
Iowa, and Nebraska,” with A. a. iowa occupying the 
northwestern portion of this area. This is the only species 
listed by Worthington for which occurrence in Illinois 
has not subsequently been either confirmed or adjudged 
improbable. French (1879) said that “P. Vitellius is re- 
ported from Iowa, but I do not know of it being found 
in Illinois.” 
