Agonum rigidulum
This record describes Agonum rigidulum (species). Recorded family: Carabidae. Recorded order: Coleoptera.
Identification and Appearance
Most like A. punctiforme with fine punctures in elytral striae but differs as follows: flatter lateral to posteriolateral depressions of pronotum, microsculpture on elytra weaker, smaller body size (under 7.5 mm), elytra proportionately shorter, femora not infuscated. A. rigidulum has finer punctures than A. crenistriatum that disappear before the apex. (See comments here )
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Adephaga
- Family
- Carabidae (Ground Beetles)
- Subfamily
- Harpalinae
- Tribe
- Platynini
- Genus
- Agonum
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
NJ‒GA‒LA
Additional species information
Species notes from the sources
Etymology: Agonum rigidulum (Casey 1920)
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Agonum rigidulum. 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.
Photos of Agonum rigidulum (2)
Photo credits: Contributed by Beatriz Moisset; Additional contributions by v belov
Frequently Asked Questions About Agonum rigidulum
What is Agonum rigidulum?
Agonum rigidulum is a species in the family Carabidae, within the order Coleoptera.
How do you identify Agonum rigidulum?
Most like A. punctiforme with fine punctures in elytral striae but differs as follows: flatter lateral to posteriolateral depressions of pronotum, microsculpture on elytra weaker, smaller body size (under 7.5 mm), elytra proportionately shorter, femora not infuscated. A. rigidulum has finer punctures than A. crenistriatum that disappear before the apex. (See comments here )
Where is Agonum rigidulum found?
Range: NJ‒GA‒LA