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 Calymmaderus nitidus

Calymmaderus nitidus Calymmaderus nitidus (LeConte) - Calymmaderus nitidus beetle - Calymmaderus nitidus Unidentified Beetle - Calymmaderus nitidus Ptinid - Calymmaderus nitidus Ptinid - Calymmaderus nitidus Small, shiny beetle with antenna blades - Calymmaderus nitidus Calymmaderus nitidus
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)
Superfamily Bostrichoidea (Carpet, Powder-post and Death-watch Beetles)
Family Ptinidae (Death-watch and Spider Beetles)
Subfamily Dorcatominae
Genus Calymmaderus
Species nitidus (Calymmaderus nitidus)
Explanation of Names
Calymmaderus nitidus (LeConte 1865)
2.5–3.0 mm(1)
Following combination is diagnostic within genus: Body glabrous, very shiny, practically no hairs and distant punctures dorsally; last ventral segment with impressed line bordering apical margin, interrupted medially.
e NA to AZ (QC-FL to WI-KS-AZ)(1); Bahamas(2)
Jun to mid-Aug in WI(1), Apr-Jun in central TX(3)
recorded in oak twigs(1)
Works Cited
1.Death-watch and spider beetles of Wisconsin—Coleoptera: Ptinidae
Arango, R.A. and D.K. Young. 2012. General Technical Report FPL-GTR-209. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory.
2.A Distributional Checklist of the Beetles (Coleoptera) of Florida
3.Abundance and distribution of potential arthropod prey species in a typical Golden-cheeked Warbler habitat.
Quinn, M.A. 2000. Unpublished Thesis. Texas A&M University, College Station. ix + 182 pp.