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

Interested in a 2022 BugGuide gathering in New Mexico?

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 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.

Previous events


Genus Mastogenius

Small Beetle - Mastogenius Beetle ID - Mastogenius crenulatus Mastogenius subcyaneus (LeConte) - Mastogenius subcyaneus Metallic wood-boring beetle - Mastogenius subcyaneus Mastogenius castlei Metallic Wood-boring Beetle - Mastogenius crenulatus Mastogenius crenulatus Knull - Mastogenius crenulatus Buprestid - Mastogenius crenulatus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Elateriformia)
Superfamily Buprestoidea (Metallic Wood-boring and False Jewel Beetles)
Family Buprestidae (Metallic Wood-boring Beetles)
Subfamily Polycestinae
Tribe Haplostethini
Genus Mastogenius
Explanation of Names
Mastogenius Solier 1849
7 spp. in our area(1), 40 total(2)
New World & Eurasia(2); in our area, so. US (north to NJ-OH), with M. crenulatus & M. subcyaneus widespread in the east (esp. the former) and the rest, in the deep south (FL-TX-AZ)(3)