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

See Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

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

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

Photos of 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

Previous events


Species Blastobasis glandulella - Acorn Moth - Hodges#1162

Moth ID - Blastobasis glandulella 1162 Acorn Moth  - Blastobasis glandulella Micromoth - Blastobasis glandulella Acorn Moth  - Blastobasis glandulella Small moth - Blastobasis glandulella Blastobasis glandulella genitalia - Blastobasis glandulella - female Acorn Moth - Blastobasis glandulella
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Gelechioidea (Twirler Moths and kin)
Family Blastobasidae (Scavenger Moths)
Subfamily Blastobasinae (Scavenger Moths)
Tribe Blastobasini
Genus Blastobasis
Species glandulella (Acorn Moth - Hodges#1162)
Hodges Number
Synonyms and other taxonomic changes
Blastobasis glandulella (Riley, 1871)
Gelechia glandulella Riley, 1871
Holcocera modestella Clemens, 1863
Blastobasis nubilella Zeller, 1873
Blastobasis glandulella
Valentinia glandulella
Phylogenetic sequence #421766
Wingspan 15-25 mm (1)
Forewing length 8-11 mm. (2)
The only sure way to identify this and most other Blastobasidae is by microscopic examination of the genitalia or by DNA barcoding and even those methods may not result in a species identification since there are many undescribed species in North America.

Adult - forewing gray to grayish-brown with pale diffuse AM line bordered distally by dark band (sometimes absent); 1 black median dot and 2 black reniform dots form a triangle; terminal line composed of dark dots; hindwing shiny gray with dark veins and fringe of long hair-like scales.

Eastern half of United States and southern Ontario; Pacific states and southwestern states. (3)
Adults fly from April to September. (1)
Larvae feed inside acorns, chestnuts (1), (2) and hickory nuts (4).
Print References
Riley, C.V. 1871. Miscellaneous notes. The Canadian Entomologist 3(6): 118
Internet References
Works Cited
1.Field Guide to Moths of Eastern North America
Charles V. Covell, Jr. 2005.
2.Moths of Western North America
Powell and Opler. 2009. UC Press.
3.North American Moth Photographers Group
4.Eastern Forest Insects
Whiteford L. Baker. 1972. U.S. Department of Agriculture · Forest Service.