Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Previous events


Species Perizoma alchemillata - Small Rivulet - Hodges#7320

Small Rivulet - Perizoma alchemillata Perizoma alchemillata ? - Perizoma alchemillata Small Rivulet  Perizoma alchemillata  7320 - Perizoma alchemillata Moth - Perizoma alchemillata IMG_7333 - Perizoma alchemillata 7320 Small Rivulet - Perizoma alchemillata Perizoma alchemillata Perizoma alchemillata
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Larentiinae
Tribe Hydriomenini
Genus Perizoma
Species alchemillata (Small Rivulet - Hodges#7320)
Hodges Number
wingspan 14-24 mm
Adult: forewing reddish-brown mixed with gray; PM line jagged, bordered on both sides by conspicuous white band; AM line white, jagged, diffuse and indistinct; ST line white, jagged, distinct near costa only; hindwing light grayish-brown with whitish tint and brown terminal line

Larva: body greenish-yellow with broad yellowish dorsal stripe bordered on both sides by purplish stripe; head black
holarctic; in North America, from Newfoundland to Quebec, and presumably adjacent northeastern states
woodlands, bogs, marshy areas; adults attracted to artificial light
adults fly from May to August; peak numbers in July
larvae present in August and September
larvae feed on flowers and seed capsules of hempnettle (Galeopsis spp.)
Life Cycle
overwinters as a pupa
Internet References
live adult and larva images plus common name reference and other info (Butterflies and Moths of Northern Ireland)
live adult image plus common name reference, description, larval foodplants, and other info (Ian Kimber, UK Moths)
live adult image and other info (Jens Schou, Denmark, Moths and Butterflies of Europe and North Africa)
live adult image (Josef Hlasek, Czech Republic)
pinned adult image and distribution in Canada giving list of provinces of occurrence (CBIF)
pinned adult image (A.W. Thomas, Natural Resources Canada)
live larva image (Kimmo Silvonen, Finland)