ColeopteraDytiscidae – Predaceous Diving Beetles

Coptotomus longulus

This record describes Coptotomus longulus (species). Recorded family: Dytiscidae. Recorded order: Coleoptera.

Identification and Appearance

Coptotomus longulus - Coptotomus longulus
Contributed by Jim McClarin; Additional contributions by tom murray , Bbarnd , Mike Quinn , v belov , Marci Hess

reliably distinguished by broad metasternal wing (narrowest width between mesocoxa and edge of metacoxal plate) of 0.35 mm or greater

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Adephaga
Family
Dytiscidae (Predaceous Diving Beetles)
Subfamily
Coptotominae
Genus
Coptotomus

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Habitat

occur in open, permanent ponds, often abundant in artificial ponds such as roadside barrow pits and stock ponds where there is rooted vegetation, usually Typha

Geographic Range

transcontinental, s. Canada to FL and n.CA

Seasonal Activity

mostly May-Oct

Diet and Behavior

Life History

comes to lights

Additional species information

Species notes from the sources

Etymology: Coptotomus longulus LeConte 1852

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Coptotomus longulus. Species-specific details appear above.

Group overview

Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.

Ecological role of the group

Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.

Economic and practical significance of the group

Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.

Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.

Explore Coleoptera families and species →

Photos of Coptotomus longulus (5)

Coptotomus longulus - photo 1
Contributed by Jim McClarin; Additional contributions by tom murray , Bbarnd , Mike Quinn , v belov , Marci Hess
Coptotomus longulus - photo 2
Contributed by Jim McClarin; Additional contributions by tom murray , Bbarnd , Mike Quinn , v belov , Marci Hess
Coptotomus longulus - photo 3
Contributed by Jim McClarin; Additional contributions by tom murray , Bbarnd , Mike Quinn , v belov , Marci Hess
Coptotomus longulus - photo 4
Contributed by Jim McClarin; Additional contributions by tom murray , Bbarnd , Mike Quinn , v belov , Marci Hess
Coptotomus longulus - photo 5
Contributed by Jim McClarin; Additional contributions by tom murray , Bbarnd , Mike Quinn , v belov , Marci Hess

Photo credits: Contributed by Jim McClarin; Additional contributions by tom murray , Bbarnd , Mike Quinn , v belov , Marci Hess

Frequently Asked Questions About Coptotomus longulus

What is Coptotomus longulus?

Coptotomus longulus is a species in the family Dytiscidae, within the order Coleoptera.

How big is Coptotomus longulus?

6.8-8.2 mm

How do you identify Coptotomus longulus?

reliably distinguished by broad metasternal wing (narrowest width between mesocoxa and edge of metacoxal plate) of 0.35 mm or greater

Where is Coptotomus longulus found?
FeatureDetails
Habitatoccur in open, permanent ponds, often abundant in artificial ponds such as roadside barrow pits and stock ponds where there is rooted vegetation, usually Typha
Rangetranscontinental, s. Canada to FL and n.CA
When is Coptotomus longulus active?

Coptotomus longulus: seasonal activity - mostly May-Oct.

What is the life cycle of a Coptotomus longulus?

comes to lights

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Jim McClarin; Additional contributions by tom murray , Bbarnd , Mike Quinn , v belov , Marci Hess. Contributors retain copyright over their individual contributions.