Calosoma macrum
This record describes Calosoma macrum (species). Recorded family: Carabidae. Recorded order: Coleoptera.
Identification and Appearance

remarkable for the almost entire absence of the usual striae and foveae: the tibia are straight in both sexes. The elytra of the male are not wider than the thorax; those of the female are about one third wider. Det. J. C. Abbott, 1993 Type Locality: Texas; Lieut. Haldeman and Mr. Lindheimer.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Adephaga
- Family
- Carabidae (Ground Beetles)
- Subfamily
- Carabinae
- Tribe
- Carabini
- Genus
- Calosoma (Caterpillar Hunter Beetles)
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
so.-c.US (AR‒OK to LA‒NM) & ne.Mex. - Map , most records in TX
Additional species information
Species notes from the sources
Etymology: Calosoma macrum LeConte 1853
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Calosoma macrum. 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 Calosoma macrum (5)
Photo credits: Contributed by Mike Quinn; Additional contributions by v belov
Frequently Asked Questions About Calosoma macrum
What is Calosoma macrum?
Calosoma macrum is a species in the family Carabidae, within the order Coleoptera.
How do you identify Calosoma macrum?
remarkable for the almost entire absence of the usual striae and foveae: the tibia are straight in both sexes. The elytra of the male are not wider than the thorax; those of the female are about one third wider. Det. J. C. Abbott, 1993
Where is Calosoma macrum found?
Range: so.-c.US (AR‒OK to LA‒NM) & ne.Mex. - Map , most records in TX
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