A Comprehensive Annotated List of the Butterflies
Lostwood NWR Butterfly Survey
The Saytyrs & Wood Nymphs
Northern Eyed Brown Satyrodes eurydice (Johansson), 1763 Habitat: Open sedge meadows and marshlands Larval food: Primarily Carex spp. Adult flight: One brood, primarily in July References: Royer 80, Opler & Krizek 178, Scott 235 Confirmed occurrences: Not recorded in 1995 at Lostwood NWR, but historically recorded for Burke County (cf. map 210 in Ferris & Brown, 1981, p. 404). Inornate Ringlet Coenonympha inornata (Edwards), 1861 Habitat: Open, grassy meadows and native prairies Larval food: Doubtless many grass species are utilized Adult flight: One brood, primarily in late May and June References: Royer 81, Opler & Krizek 186, Scott 239 (as tullia) Confirmed occurrences: 10 Jun 1995, Unit 3c in transect area; 21 Jun 1995, Unit 3c in transect area, also Knudson's Slough area, also Units 5a and 5b; 5 Jul 1995, Unit 3c in transect area, also Unit 7 near entrance; 17 Jun through 7 Jul 1996 on both transects. Common Wood Nymph Cercyonis pegala (Fabricius), 1775 Habitat: Native prairies and grasslands Larval food: Andropogon, Stipa; many grasses are no doubt utilized Adult flight: One brood, primarily in July and August References: Royer 82, Opler & Krizek 186, Scott 240 Confirmed occurrences: 29 Jul 1995, Unit 3c in transect area, also Unit 17, also roadside 2.5 miles west of tower (Units 1 and 10); 5 Aug 1995, Unit 3c in transect area, also Unit 7 near entrance, also center of Unit 1 near north refuge boundary, also Units 5a, 5b, 5c and 21 in dense Liatris stand west of Upper Lostwood Lake along road; abundant throughout August 1996 on both transects. Ridings' Satyr Neominois ridingsii (W. H. Edwards), 1865 Habitat: Dry bunchgrass ridges; not seen in ND since mid-1970s Larval food: Bouteloua gracilis Adult flight: One brood, mid-June References: Royer 84, Ferris & Brown 282, Scott 242 Confirmed occurrences: Not recorded in 1995 or 1996 at Lostwood NWR or from Burke county, but is on historical record from Mountrail and Divide Counties, as well as a 1994 record 9 miles south of Plentywood, Montana. Should be sought along bare bunchgrass ridges in late June. Varuna Arctic Oeneis uhleri varuna (W. H. Edwards), 1882 Habitat: TL = "Plains of Dakota Territory"; well drained prairie slopes Larval food: Unknown grass sp. Adult flight: One brood, mid-May into June References: Royer 84, Ferris & Brown 284, Scott 250 Confirmed occurrences: 31 May 1995, eastern Unit 5b; 10 Jun 1995, Unit 17; 21 Jun 1995, near Knudson's Slough; 17 Jun 1996 on both transects. Alberta Arctic Oeneis alberta (Elwes), 1893 Habitat: Virgin prairies in isolated colonies; rare; early May Larval food: Festuca spp. Adult flight: One brood, early to middle May References: Royer 84, Ferris & Brown 286, Scott 249 Confirmed occurrences: Not recorded in 1995 or 1996 at Lostwood NWR, this rare, intermittently discovered species is on record from Ward and Divide Counties and could be found in early to middle May.
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