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Insects & Arthropods of Arnold Arboretum of Harvard University

The insects & arthropods most often spotted in Arnold Arboretum, ranked by recent research-grade observations.

4,420
recent observations
50
species listed
50
insects & arthropods

Naturalists have logged 4,420 research-grade observations across the 50 most-recorded species in Arnold Arboretum. The most frequently seen is the Common Eastern Bumble Bee, with 682 recorded sightings.

Most-observed insects & arthropods in Arnold Arboretum

Common Eastern Bumble Bee
Bombus impatiens
682 observations
Western Honey Bee
Apis mellifera
564 observations
Asian Lady Beetle
Harmonia axyridis
276 observations
Brown-belted Bumble Bee
Bombus griseocollis
197 observations
Eastern Carpenter Bee
Xylocopa virginica
179 observations
Small White
Pieris rapae
157 observations
Monarch
Danaus plexippus
129 observations
Japanese Beetle
Popillia japonica
100 observations
Two-spotted Bumble Bee
Bombus bimaculatus
85 observations
Isabella Tiger Moth
Pyrrharctia isabella
84 observations
Margined Calligrapher
Toxomerus marginatus
83 observations · iNaturalist
Bold Jumping Spider
Phidippus audax
78 observations
Red Milkweed Beetle
Tetraopes tetrophthalmus
76 observations
Winter Firefly
Photinus corruscus
74 observations · iNaturalist
Eastern Yellowjacket
Vespula maculifrons
71 observations · iNaturalist
Bald-faced Hornet
Dolichovespula maculata
69 observations
Black Swallowtail
Papilio polyxenes
67 observations
Red Admiral
Vanessa atalanta
65 observations
Eastern Black Carpenter Ant
Camponotus pennsylvanicus
64 observations
Reddish-brown Stag Beetle
Lucanus capreolus
60 observations
Northern Paper Wasp
Polistes fuscatus
59 observations
European Paper Wasp
Polistes dominula
58 observations
Oleander Aphid
Aphis nerii
57 observations
Eastern Calligrapher
Toxomerus geminatus
57 observations
Zabulon Skipper
Lon zabulon
50 observations · iNaturalist
Blue Dasher
Pachydiplax longipennis
49 observations
Silver-spotted Skipper
Epargyreus clarus
45 observations
Peck's Skipper
Polites peckius
45 observations · iNaturalist
Bicolored Striped Sweat Bee
Agapostemon virescens
44 observations
Oriental Beetle
Exomala orientalis
44 observations · iNaturalist
Eastern Tiger Swallowtail
Papilio glaucus
43 observations
Common Whitetail
Plathemis lydia
43 observations
Versute Sharpshooter
Graphocephala versuta
42 observations · iNaturalist
Great Golden Digger Wasp
Sphex ichneumoneus
41 observations · iNaturalist
Cross Orbweaver
Araneus diadematus
39 observations
American Lady
Vanessa virginiensis
38 observations
Great Black Digger Wasp
Sphex pensylvanicus
38 observations · iNaturalist
Chinese Mantis
Tenodera sinensis
38 observations
Fragile Forktail
Ischnura posita
38 observations · iNaturalist
Western Conifer Seed Bug
Leptoglossus occidentalis
37 observations · iNaturalist
Thick-legged Hover Fly
Syritta pipiens
37 observations · iNaturalist
Locust Borer
Megacyllene robiniae
37 observations
Spotted Lanternfly
Lycorma delicatula
37 observations
American Copper
Lycaena hypophlaeas
37 observations · iNaturalist
Coppery Leafhopper
Jikradia olitoria
36 observations · iNaturalist
Stripe-legged Robber Fly
Dioctria hyalipennis
35 observations · iNaturalist
Ligated Furrow Bee
Halictus ligatus
35 observations · iNaturalist
American Winter Ant
Prenolepis imparis
34 observations
Witch-hazel Cone Gall Aphid
Hormaphis hamamelidis
34 observations · iNaturalist
Northeastern Hammertail
Efferia aestuans
33 observations · iNaturalist

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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