stricted to “Philadelphia, Pennsylvania” by dos Pas- 
sos 1938:72); Worthington 1880:48. 
Aglais milberti: Holland 1931: 153. 
Nymphalis milberti: Klots 1951:106; dos Passos 1964: 
78 (No. 535). 
Illinois records.—Map 77. 
Like N. v-a. j-albu’n, milberti is a species of variable 
numbers from year to year. In normal seasons it is 
rare or absent in northern Illinois, but in years of 
abundance it may be found in some numbers. One such 
year was 1967, when it was taken in several localities, 
especially at Freeport, Stephenson County in August 
and September (RAA), and also at Streator, La Salle 
County, where it had not previously been found. Also 
abundant in 1949 in the Chicago area (P.S. Reming- 
ton 1949). N. milberti is found much more frequently 
than N. v-a. j-album and extends farther south in IIli- 
nois. It has been taken from June 11 through Novem- 
ber 11, but the majority of records are between late 
August and early October. 
Nymphalis antiopa (Linnaeus) 
Mourning cloak 
Papilio antiopa Linnaeus 1758:476 (type-locality re- 
stricted to “Sweden” by Verity & Querci 1924343). 
Vanessa antiopa: Worthington 1880:48. 
Aglais antiopa: Holland 1931:153. 
Nymphalis antiopa: Klots 1951:106; dos Passos 1964: 
79 (No. 536). 
Illinois records.—Map 78. 
The mourning cloak is generally distributed in Illi- 
nois and is common. Shapiro (1966) stated that it is 
subject to the same periodicity as its congeners, but our 
observations of the species in Illinois seem to indicate 
that this fluctuation in numbers, if present at all, is 
much less noticeable in this butterfly than in its rela- 
tives. The species hibernates as an adult, emerging ear- 
y in the spring and flying throughout the season. The 
insect has one of the longest seasons of any of the IIli- 
lois butterflies, appearing as early as March 3 and as 
ate as November 20. 
Polygonia interrogationis (Fabricius) 
Question mark 
Papilio interrogationis Fabricius 1798:424 (type-locality 
“North America”). 
srapta interrogationis: Worthington 1880:48. 
olygonia interrogationis: Holland 1931149 Klots 
1951:102; dos Passos 1964:79 (Now937)) 
Illinois records.—Map 79, 
The question mark is the largest, commonest, and 
nost familiar member of the genus Polygonia and is 
tatewide in distribution. It is seasonally dimorphic; 
ve have found the lighter winter form fabric (= typical 
nterrogationis) a little less common than the dark sum- 
ner form umbrosa. Earliest and latest dates of capture 
n Illinois are April 13 and November 3. 
Polygonia comma (Harris) 
Hop merchant, comma 
‘anessa comma Harris 1841 :221 (type-locality “Massa- 
chusetts”’) . 
27 
Grapta comma: Worthington 1880:48. 
Polygonia comma: Holland 1931:149; Klots 1951:103; 
dos Passos 1964:79 (No. 538). 
Illinois records.—Map 80. 
The comma is, like the question mark, found through- 
out Illinois but is less common than that species. It ex- 
hibits similar seasonal dimorphism. Overwintered adults 
frequently appear in March and are among the earliest 
butterflies on the wing in early spring. Records range 
from March 17 to November 7. 
Polygonia faunus (Edwards) 
Green comma 
Grapta faunus Edwards 1862b:222 (type-locality re- 
stricted to “Hunter, [Greene County,] New York” by 
Brown 1967: 338 by designation of lectotype) ; Worth- 
ington 1880:48. 
Polygonia faunus: Holland 1931:150; Klots 1951:104; 
dos Passos 1964:79 (No. 540). 
Illinois records.—Carroit County: Palisades State 
Park, July 20, 1963, Laibly (DL). 
We examined the specimen on which the above rec- 
ord is based. Laibly reported that two more were taken 
at the same locality in 1964, but these were not seen. 
From this record, Laibly’s statement, and the presence 
of the species in Worthington’s list, it may be inferred 
that fawnus is a species of consistent but rare occur- 
rence in extreme northern (probably only northwestern ) 
Illinois. 
Polygonia progne (Cramer) 
Gray comma 
Papilio progne Cramer 1776(1) :9 (type-locality ‘“Ja- 
maica and New York”). 
Grapta progne: Worthington 1880:48. 
Polygonia progne: Holland 1931:151; Klots 1951:104; 
dos Passos 1964:80 (No. 546). 
Illinois records.—Map 81. 
This butterfly is local and uncommon in Illinois and 
is not recorded from the southern portion of the state, 
where it may not occur. The most southerly record is 
from Elsah, Jersey County, where Remington found it 
uncommon (CLR). It is very rare in the Chicago area, 
recorded from Cook County, without definite locality, 
by Schatz and Boughner (LS, JLB). A number, how- 
ever, were taken in a forest preserve near Willow 
Springs, in August, 1966, by Arnold, Brady, and Irwin 
(RRI); it has been taken there also in subsequent 
years. The species is rare at Streator, La Salle County 
(RRI) but reported common at Danville, Vermilion 
County (TE), and in Perryton Township, Mercer Coun- 
ty (PJC). Le Baron (1871) described damage to cur- 
rant bushes by the larvae in Kankakee County. It has 
been taken in April and between June 13 and October 
26. 
Chlosyne nycteis (Doubleday) 
Silvery checkerspot 
Melitaea nycteis Doubleday 1847:181 (type-locality 
“middle United States”); Klots 1951:98. 
Phyciodes nycteis: Worthington 1880:47; Holland 1931: 
136. 
