Insects & Arthropods of Pennsylvania
The insects & arthropods most often spotted in Pennsylvania, ranked by recent research-grade observations.
301,038
recent observations
50
species listed
50
insects & arthropods
Naturalists have logged 301,038 research-grade observations across the 50 most-recorded species in Pennsylvania. The most frequently seen is the Spotted Lanternfly, with 21,947 recorded sightings.
Most-observed insects & arthropods in Pennsylvania
Spotted Lanternfly
Lycorma delicatula
21,947 observations · iNaturalist
Monarch
Danaus plexippus
17,261 observations
Common Eastern Bumble Bee
Bombus impatiens
16,153 observations
Asian Lady Beetle
Harmonia axyridis
14,856 observations
Western Honey Bee
Apis mellifera
13,098 observations
Eastern Tiger Swallowtail
Papilio glaucus
12,039 observations
Eastern Carpenter Bee
Xylocopa virginica
8,563 observations
Silver-spotted Skipper
Epargyreus clarus
7,516 observations
Huron Skipper
Atalopedes huron
7,454 observations · iNaturalist
Isabella Tiger Moth
Pyrrharctia isabella
7,218 observations
Small White
Pieris rapae
7,166 observations
Red-spotted Admiral
Limenitis arthemis
6,556 observations
Black Swallowtail
Papilio polyxenes
6,458 observations
Hickory Tussock Moth
Lophocampa caryae
6,217 observations
Spicebush Swallowtail
Papilio troilus
5,763 observations
Eastern Tent Caterpillar Moth
Malacosoma americana
5,571 observations · iNaturalist
Bold Jumping Spider
Phidippus audax
5,324 observations
Orchard Orbweaver
Leucauge venusta
5,076 observations
Great Spangled Fritillary
Argynnis cybele
4,990 observations · iNaturalist
Zabulon Skipper
Lon zabulon
4,939 observations · iNaturalist
Spongy Moth
Lymantria dispar
4,893 observations
Brown-belted Bumble Bee
Bombus griseocollis
4,753 observations
Chinese Mantis
Tenodera sinensis
4,743 observations
Japanese Beetle
Popillia japonica
4,741 observations
Red Admiral
Vanessa atalanta
4,707 observations
Red Milkweed Beetle
Tetraopes tetrophthalmus
4,664 observations
Large Milkweed Bug
Oncopeltus fasciatus
4,634 observations
Pearl Crescent
Phyciodes tharos
4,505 observations
Brown Marmorated Stink Bug
Halyomorpha halys
4,306 observations
Eastern Boxelder Bug
Boisea trivittata
4,210 observations
Common Whitetail
Plathemis lydia
4,210 observations
Ebony Jewelwing
Calopteryx maculata
4,181 observations
Peck's Skipper
Polites peckius
3,887 observations · iNaturalist
Eastern Tailed-Blue
Everes comyntas
3,825 observations
Blue Dasher
Pachydiplax longipennis
3,823 observations
Bald-faced Hornet
Dolichovespula maculata
3,786 observations
North American Wheel Bug
Arilus cristatus
3,781 observations
Giant Leopard Moth
Hypercompe scribonia
3,761 observations · iNaturalist
Polyphemus Moth
Antheraea polyphemus
3,611 observations
Banded Tussock Moth
Halysidota tessellaris
3,542 observations
Oriental Beetle
Exomala orientalis
3,528 observations · iNaturalist
Margined Calligrapher
Toxomerus marginatus
3,519 observations · iNaturalist
Ailanthus Webworm Moth
Atteva aurea
3,386 observations · iNaturalist
Two-spotted Bumble Bee
Bombus bimaculatus
3,328 observations
Eastern Black Carpenter Ant
Camponotus pennsylvanicus
3,237 observations
Tan Jumping Spider
Platycryptus undatus
3,236 observations · iNaturalist
Northern Paper Wasp
Polistes fuscatus
3,097 observations
Dark Fishing Spider
Dolomedes tenebrosus
3,043 observations
Milkweed Tussock Moth
Euchaetes egle
2,969 observations
North American Luna Moth
Actias luna
2,967 observations
Insects & Arthropods in nearby places
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