ColeopteraChrysomelidae – Leaf Beetles

Sennius medialis

This record describes Sennius medialis (species). Recorded family: Chrysomelidae. Recorded order: Coleoptera.

Identification and Appearance

Sennius medialis - Sennius medialis
Contributed by Tyler Hedlund; Additional contributions by Mike Quinn , v belov

most closely resembles S. abbreviatus , which has the hind legs black, not red

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Polyphaga
Superfamily
Chrysomeloidea
Family
Chrysomelidae (Leaf Beetles)
Subfamily
Bruchinae
Tribe
Bruchini
Genus
Sennius

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

Habitat and Range

Geographic Range

AZ to Guatemala - Map

Additional species information

Species notes from the sources

Etymology: Sennius medialis (Sharp 1885)

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Sennius medialis. 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 Sennius medialis (5)

Sennius medialis - photo 1
Contributed by Tyler Hedlund; Additional contributions by Mike Quinn , v belov
Sennius medialis - photo 2
Contributed by Tyler Hedlund; Additional contributions by Mike Quinn , v belov
Sennius medialis - photo 3
Contributed by Tyler Hedlund; Additional contributions by Mike Quinn , v belov
Sennius medialis - photo 4
Contributed by Tyler Hedlund; Additional contributions by Mike Quinn , v belov
Sennius medialis - photo 5
Contributed by Tyler Hedlund; Additional contributions by Mike Quinn , v belov

Photo credits: Contributed by Tyler Hedlund; Additional contributions by Mike Quinn , v belov

Frequently Asked Questions About Sennius medialis

What is Sennius medialis?

Sennius medialis is a species in the family Chrysomelidae, within the order Coleoptera.

How big is Sennius medialis?

1.6–2.4 mm

How do you identify Sennius medialis?

most closely resembles S. abbreviatus , which has the hind legs black, not red

Where is Sennius medialis found?

Range: AZ to Guatemala - Map

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

Photo credits: Contributed by Tyler Hedlund; Additional contributions by Mike Quinn , v belov. Contributors retain copyright over their individual contributions.