8 
Pamphila massasott: Worthington 1880:49. 
Poanes massasoit: Holland 1931:389; Klots 1951:249; 
dos Passos 1964:7 (No. 72). 
Illinois records.—Kane County: Elgin, many speci- 
mens and dates, June 28 through August 15, Bristol and 
Herz (FMNH, INHS). IRoguoIs COUNTY: 2 mi. NE 
Beaverville, June 29, 1965, Irwin (INHS) (Fig. 1). Me- 
Henry County: McHenry Dam State Park, July 17, 
1971, Christoph (GC). 
Although massasoit is known from few localities, it 
is doubtlessly found elsewhere in suitable habitats in the 
northern half of the state. At Beaverville, Iroquois Goun- 
ty, we found it flying in company with Euphyes bimacula. 
Like that species, massasoit is an inhabitant of bog and 
marsh environments. It is local but may be common 
where found. There is probably only one brood. 
Poanes hobomok (Harris) 
- Hobomok skipper 
Hesperia hobomok Harris 1862b:313 (type-locality 
“Massachusetts” ) . 
Poanes hobomok: Holland 1931:390; Klots 1951:250; 
dos Passos 1964:7 (No. 73). 
Illinois records.—Map 6. 
P. hobomok is generally distributed throughout Ilh- 
nois, although records are few and widely scattered. It 
‘s common where found. The species has been con- 
fused with P. zabulon, rendering many older records in 
the literature unreliable. It is single-brooded. The ear- 
liest and latest dates of capture are May 20 and July 4. 
The females are dimorphic; most are similar to the 
males, but the dark female form pocahontas is oc- 
casionally found. The dark form does not appear to 
be common in Illinois and may not occur throughout 
the state. The only localities from which it has been 
recorded are Palos Park (Fig. 1) and River Grove, in 
Cook County, between June 2 and July 1. 
Poanes zabulon (Boisduval & Le Conte) 
Zabulon skipper 
Hesperia zabulon Boisduval & Le Conte 1834: Plate 
76 (type-locality “North America’). 
Pamphila zabulon: Worthington 1880: 49. 
Poanes zabulon: Holland 1931:390; Klots 1951 :250; 
dos Passos 1964:7 (No. 74). 
Illinois records.—Map 7. 
Like P. hobomok, zabulon appears to be distributed 
throughout Illinois. It is, however, less common than the 
foregoing species. Both hobomok and zabulon are less 
restricted in habitat than their congeners and are not 
confined to marsh environments. Unlike hobomok, za- 
bulon is double-brooded. The first brood is smaller in 
numbers than the second and has been recorded from 
May 5 through July 8. The second brood is larger, ap- 
pearing in early August and reaching maximum num- 
bers 3 weeks later. Earliest and latest dates for the 
second brood in Illinois are August 9 and September 13. 
Poanes viator (Edwards) 
Broad winged skipper 
Hesperia vtiator Edwards 1865:202 (type-locality re- 
stricted to “Goose Lake Prairie, Grundy County, Ili- 
nois” by Shapiro “1970” [1971]:110 by designation 
of neotype) (Fig. 1). 
Pamphila viator: Worthington 1880:49. 
Phycanassa viator: Holland 1931:392. 
Poanes viator: Klots 1951 249: dos Passos 1964:7 (No 
Th We 
Illinois records —GruNby COUNTY: Goose Lak 
Prairie, July 28, 1969, ! é 1 9, Cashatt (INHS). Mc 
Henry County: McHenry Dam State Park, July 17 
19715206 oe 285.2: Christoph and Nielsen (GC, GN) 
Before the recent rediscovery of this skipper in north 
ern Illinois, the only indication of its presence in th 
state was Edwards’ designation of “Northern Illinois an 
New Orleans” as the original type-locality. Shapiro cor 
ducted an extensive search of major institutional collec 
tions but found no syntypes or other Illinois viator. H 
therefore designated the male specimen from Grund 
County listed above as the neotype of the species (She 
piro, loc. Cihae 
Search for viator at the Goose Lake locality in 197 
and 1971 did not produce any additional examples, bi 
‘t was discovered in McHenry County. It may occi 
‘n similar marsh habitats elsewhere in northern IIlino 
It is single-brooded and very local. The flight is sa 
by Conway (personal communication) to resemble th 
of P. massasott. 
Problema byssus (Edwards) 
Byssus skipper 
Pamphila byssus Edwards 1880b:224 (type-locality “ 
dian River, Florida’). 
Problema byssus: Holland 1931:386; Klots 1951:2° 
dos Passos 1964:8 (No. 83). 
Illinois records. JERSEY COUNTY: Elsah (camj 
of Principia College) , July 5, 1942, July 7, 1942, Ju 
VME ARS, yy des te) Remington (P. Remington 1956). 
SatLE County: Streator, July 90, 1963, McC 
(INHS) ; Streator, July 20, 1964, Irwin (INHS) (F 
1). Mason County: Mason State Forest, July 
1963, July 19, 1963, Taylor (TT). Mercer Coun’ 
Perryton Township (“local, common when found, | 
June - early July”) (PJC). Monroe County: 3 
S Valmeyer, June 27, 1956, Sanderson (INHS). Pec 
County: Robinson Park, 10 mi. N Peoria, July 7, 1S 
Taylor (PT): 
The lack of old records suggests that this may k 
comparatively recent addition to the Illinois fauna, Pp! 
ably adventive from west of the Mississippi rather t 
from the South. It appears to be gradually increa 
its range in Illinois following the larger rivers, Or 
near which most of the known examples of byssus in 
nois have been found. Some authors regard this ‘ 
prairie species, but its apparent prosperity in Illinois ° 
indicate that it is adapting to a more varied habite 
Atrytone delaware (Edwards) | 
Delaware skipper 
Hesperia delaware Edwards 1863a:19 (type-loc 
“Philadelphia [Pennsylvania]”’) . 3 
Hesperia logan Edwards 1863a:18 (type-locality q 
sing, Michigan”). 
Pamphila delaware: Worthington 1880:49. 
Atrytone logan: Holland 1931:387; Klots 1951:2: 
