The of Fort Washington State Park Fort Washington, Pennsylvania Compiled 1980 - 2011 by Richard W. Boscoe Published and distributed by The Militia Hill Hawk Watch in association with Wyncote Audubon Total Number of - 62 Swallowtails (Papilionidae) - 5 Whites and Sulphurs (Pieridae) - 5 Brush-footed Butterflies ( ) - 18 Hairstreaks, Coppers, Blues, and Harvesters () - 13 Skippers (Hesperiidae) - 21 0912

H: Host, OS: Overwinter & Status, BF: Broods & Flights + Comments Swallowtails  Cloudless Sulphur  Viceroy  Comma Papilionidae Phoebis sennae Limenitis archippus Polygonia comma H: sennas Senna, Chamaecrista, H: Salix H: Elm ,  Pipevine Swallowtail host plant found elsewhere OS: Part-grown larva Stinging Nettle Urtica dioica Battus philenor OS: Migrant in late summer, does BF: Three broods, late May into OS: Adults hibernate H: Pipevine Aristolochia not breed June, mid-July to early August BF: Multiple broods, late May serpentaria, does not occur in BF: September. Rare in FWSP. and early September - October. Adult hibernators FWSP appear in late March into OS: Pupa  Little Sulphur  Red Spotted Purple April. Pronounced seasonal BF: Two broods, May into June Eurema lisa Limenitis arthemis astyanax dimorphism, hibernators are and August. Rare stray. H: Sensitive Plant Chamaecrista H: Wild Cherry , much paler than summer nictitans willow Salix individuals.  Black Swallowtail OS: Migrant, does not overwinter OS: Part-grown larva  Compton Tortoise Shell Papilio polyxenes BF: August - September. Rare BF: Three broods, late May into H: Queen Anne’s Lace Daucus stray in FWSP. Breeding in June, mid-July to early August vau-album carota, Parsnip Pastinaca 2007. and early September H: In this area (if breeding) Elm sativa Ulmus americana is most likely. OS: Pupa  Cabbage  Buckeye Elsewhere Salix, aspen BF: Multiple broods, late April into Pieris rapae Junonia coenia and Betula. September H: Winter Cress Barbarea H: Plantain Plantago lanceolata OS: Adults hibernate, this is vulgaris, Garlic Mustard Alliaria OS: Migratory, does not essentially a northern species  Giant Swallowtail officinalis overwinter in this area which periodically expands its OS: Pupa BF: Multiple broods, June into range Papilio cresphontes BF: One brood, emerges in H: Prickly Ash Zanthoxylum BF: Multiple broods, late March - October late June, flies into October. americanum, does not occur in early April into October. Larvae Hibernators appear in late FWSP will eat many mustards, both  Red Admiral March through April. Fond of OS: Pupa wild and cultivated. Vanessa atalanta sapflows. First seen in FWSP BF: Two broods, May into June H: Stinging Nettle Urtica dioica in September 1995. Not seen and August. Very rare stray, OS: Adults hibernate/migrate Monarchs since the late 1990’s. seen once. Danainae BF: Multiple broods, June - September. Adult hibernators/  Mourning Cloak  Tiger Swallowtail migrants appear in May.  Monarch Nymphalis antiopa Papilio glaucus H: willow Salix, elm Ulmus H: Wild Cherry Prunus serotina, Danaus plexippus  Painted Lady H: milkweeds Asclepias americana perhaps also Tulip Poplar Vanessa cardui OS: Migratory, does not OS: Adults hibernate Liriodendron tulipifera H: thistles Cirsium overwinter in this area BF: Number of broods uncertain, OS: Pupa OS: Migratory, does not BF: Multiple broods, June to perhaps only one emerging in BF: Two broods, May into early overwinter in this area September June. Hibernators appear in June, late July into early BF: Migrants arrive in May then late March through April. September multiple broods June into Brush-footed Butterflies September. Sporadic, not  Pearl Crescent  Spicebush Swallowtail Nymphalidae present in most years. Papilio troilus Phyciodes tharos  H: asters Aster H: Spicebush Lindera benzoin,  Little Wood Satyr American Painted Lady OS: Part-grown larva Sassafras Sassafras albidum Vanessa virginiensis Megisto cymela BF: Multiple broods, mid-May OS: Pupa H: Pussytoes Antennaria H: grasses through September BF: Two broods, May into June, OS: Part-grown larva OS: Adults hibernate/migrate late July into early September BF: One brood, mid-June through BF: Multiple broods, June -  Meadow Fritillary August. Adult hibernators/ July Boloria bellona Whites & Sulphurs migrants appear in May.  Hackberry Butterfly H: violets Viola Pieridae  Question Mark OS: Part-grown larva Asterocampa Polygonia interrogationis BF: Multiple broods, mid-April  H: Hackberry Celtis occidentalis through September Orange Sulphur H: Elm Ulmus americana, Colias eurytheme OS: Part-grown larva BF: Two broods, mid-June into Stinging Nettle Urtica dioica  H: clover Trifolium, Sweet White Variegated Fritillary early July and mid-August into OS: Adults hibernate Clover Melilotus alba, Crown Euptoieta claudia early September BF: Multiple broods, late May Vetch Coronilla varia - October. Adult hibernators H: violets Viola, in south passion OS: Part-grown larva appear in late March into flowerPassiflora BF: Multiple broods, April into  Tawny Emperor April. Pronounced seasonal OS: Summer influx species, does October Asterocampa clyton dimorphism, hibernators are not overwinter H: Hackberry Celtis occidentalis much paler than summer BF: August - September,  Common Sulphur OS: Part-grown larva individuals. occasional breeding is possible (Clouded) BF: Two broods, June, August.  Great Spangled Fritillary Colias philodice Rare. H: clover Trifolium, Sweet White Speyeria cybele H: violets Viola Clover Melilotus alba OS: Unfed first instar larva OS: Part-grown larva BF: One brood, emerges in June BF: Multiple broods, April into and flies through September October H: Host, OS: Overwinter & Status, BF: Broods & Flights + Comments

 Snout Butterfly  Southern Hairstreak  European  Silver-Spotted Skipper Libytheana carinenta Fixsenia favonius ontario Thymelicus lineola Epargyreus clarus H: Hackberry Celtis occidentalis H: White Oak Quercus alba H: Timothy Grass Phleum H: Indigo Bush Amorpha OS: Migratory, does not OS: Egg pratense fruticosa, Hog Peanut overwinter in this area BF: One brood, late June. Adults OS: Egg Amphicarpa bracteata, Tick BF: Multiple broods, migrants visit milkweed and dogbane. BF: One brood, June Trefoils Desmodium arrive in June then into Extremely rare, seen only once OS: Pupa September (June 1980).  Peck’s Skipper BF: Multiple broods, late May Polites peckius through September  Hairstreaks, Coppers, Gray Hairstreak H: grasses e.g. Low Speargrass Strymon melinus Poa annua  Long-Tailed Skipper Blues and Harvesters H: Larvae eat plants of many OS: Part-grown larva Urbanus proteus Lycaenidae families, mostly Tick Trefoils BF: Two broods, late May into H: Legumes including Tick Trefoils Desmodium in FWSP. Only mid-June, late July to early Desmodium and string bean  Harvester flowers and seeds are eaten, September Phaseolus not leaves. OS: Migratory, does not Feniseca tarquinius  H: Larva carnivorous, feeds OS: Pupa Tawny-Edged Skipper overwinter in this area on wooly aphids especially BF: Multiple broods, May through Polites themistocles BF: September, rare in FWSP. the aphid September. Commonest in late H: grasses e.g. Low Speargrass Can be a pest on cultivated tesselatus on Alder Alnus summer. Poa annua string beans in the far south. rugosa OS: Part-grown larva OS: Pupa  American Copper BF: Two broods, late May into  Juvenal’s Dusky Wing BF: Multiple broods, June into Lycaena phlaeas mid-June, late July to late Erynnis juvenalis September. Rare and sporadic H: Sheep Sorrel Rumex August H: White Oak Quercus alba, other in its occurence in FWSP. acetosella oaks elsewhere OS: Part-grown larva  Cross-Line Skipper OS: Mature larva  Coral Hairstreak BF: Multiple broods, early May Polites origenes BF: One brood, late April to late titus into September H: Little Bluestem Grass May H: Wild Cherry Prunus serotina Andropogon scoparius OS: Egg  Eastern Tailed Blue OS: Part-grown larva  Horace’s Dusky Wing BF: One brood, late June to mid Everes comyntas BF: Two broods, late June to early Erynnis horatius July. Adults are very fond of H: Crown Vetch Coronilla varia July, mid-August into early H: oaks Quercus orange butterfly weed. and other vetches, clover September. Much less common OS: Mature larva Trifolium than Tawny-edged Skipper. BF: Two broods, late April into  Striped Hairstreak OS: Mature larva May and July. Occasional in Satyrium liparops BF: Multiple broods, late April into  Northern Broken Dash FWSP. H: hawthorn September egeremet  Wild Indigo Dusky Wing OS: Egg  H: Panic Grass BF: One brood, late June to mid Spring Azure lanuginosum Erynnis baptisiae July. Rare, adults visit milkweed Celastrina ladon OS: Part-grown larva H: Crown Vetch Coronilla varia, and dogbane. H: Dogwood Cornus, Cherryleaf BF: One brood, late June to Sweet White Clover Melilotus Virburnum Viburnum mid-July. Adults are fond of alba  Hickory Hairstreak prunifolium. Larvae eat flowers, dogbane. OS: Mature larva not leaves. BF: At least two broods, late May Satyrium caryaevorus  H: hickory Carya OS: Pupa Little Glassy Wing into June, July into September OS: Egg BF: One brood, April Pompeius verna  Checkered Skipper BF: One brood, late June - early  H: Purpletop Triodia flava July. Common as recently as Summer Azure OS: Part-grown larva Pyrgus communis 1982, now rare. Adults fond of Celastrina neglecta BF: One brood, late June. Adults H: Common Mallow Malva milkweed, dogbane and sweet H: Dogwood Cornus, Maple- are fond of milkweed. neglecta white clover. leaf Virburnum Viburnum OS: Mature larva, does not acerifolium, Green-headed  Sachem survive winters in this area in  Banded Hairstreak ConeflowerRudbeckia Atalopedes campestris most years laciniata, Wingstem H: grasses BF: Multiple broods, late May H: Black Walnut Juglans nigra Actinomeris alternifolia. Larvae OS: A late summer influx species, through September. Most often OS: Egg eat flowers, not leaves. does not overwinter in this area seen in late summer. BF: One brood, late June - early OS: Pupa BF: August, September. Adults July. Less common than BF: Multiple broods, Spring into are fond of thistle.  Common Sooty Wing formerly. Adults visit same September catullus flowers as Hickory Hairstreak.  Delaware Skipper H: Pigweed Skippers Anatrytone logan OS: Mature larva  Red-banded Hairstreak Hesperiidae H: Panic Grass Panicum BF: Multiple broods, May through Calycopis cecrops lanuginosum September. Most often seen in H: Reared on Staghorn Sumac  Swarthy Skipper OS: Part-grown larva disturbed areas in association . Larvae are BF: One brood, early to mid-July. with its food plant. detritivores (feeds on rotting Nastra lherminier Adults are fond of thistle. H: Little Bluestem Grass leaves) Andropogon scoparius Historical OS: Part-grown larva, essentially  Zabulon Skipper OS: Part-grown larva a southern species, near the Not seen in 20+ years BF: Two broods, June and mid- Poanes zabulon northern limit of its range. August to early September H: grasses, probably preferring  Wood Nymph BF: Multiple broods, May into broad-bladed species Cercyonis pegala early September. Adults of the  Least Skipper OS: Part-grown larva late summer brood are fond of BF: Two broods, late May H: grasses goldenrod. Ancyloxypha numitor into June and mid-August OS: Unfed first instar larva H: Wide-bladed grasses growing into September. Sexes are BF: One brood, late June through  White M Hairstreak in wet ground e.g. Reed Grass dimorphic, females are dark. August Parrhasius m-album Phalaris arundinacea OS: Part-grown larva  Hobomok Skipper H: White Oak Quercus alba  Dun Skipper BF: Multiple broods, early June OS: Pupa, essentially a southern Poanes hobomok through September Euphyes vestris species H: sedges Carex H: grasses, probably Panicum BF: Three broods, late April -  Fiery Skipper OS: Part-grown larva and Poa early May, late June - early BF: Two broods, mid to late June OS: Larva July and mid-August into early Hylephila phyleus and mid to late August BF: One brood, late May into September. Adults visit yarrow, H: grasses June. Adults are fond of Queen Anne’s Lace, milkweed, OS: Migratory, does not  Dusted Skipper blackberry blossoms. dogbane and goldenrod. overwinter in this area BF: August, September. An Atrytonopsis hianna  Hoary Edge H: Little Bluestem Grass occasional pest on lawn grass Achalarus lyciades in the far south. Andropogon scoparius OS: Mature larva H: Tick Trefoils Desmodium Notes: BF: One brood, late May to mid- OS: Mature larva June BF: One brood, June. Rare in FWSP.