Pasimachus obsoletus
This record describes Pasimachus obsoletus (species). Recorded family: Carabidae. Recorded order: Coleoptera.
Identification and Appearance
Most similar to P. elongatus , but borders of pronotum and elytra narrower and usually black (may be faintly blue, especially near humeri) • no fringe of yellow setae inside metatibia in males (present in P. elongatus )
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Adephaga
- Family
- Carabidae (Ground Beetles)
- Subfamily
- Scaritinae
- Tribe
- Pasimachini
- Genus
- Pasimachus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
WY‒IA to AZ‒TX
Additional species information
Species notes from the sources
Etymology: Pasimachus obsoletus LeConte 1846
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Pasimachus obsoletus. 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 Pasimachus obsoletus (3)
Photo credits: Contributed by Boris Büche; Additional contributions by v belov
Frequently Asked Questions About Pasimachus obsoletus
What is Pasimachus obsoletus?
Pasimachus obsoletus is a species in the family Carabidae, within the order Coleoptera.
How big is Pasimachus obsoletus?
22‒26 mm
How do you identify Pasimachus obsoletus?
Most similar to P. elongatus , but borders of pronotum and elytra narrower and usually black (may be faintly blue, especially near humeri) • no fringe of yellow setae inside metatibia in males (present in P. elongatus )
Where is Pasimachus obsoletus found?
Range: WY‒IA to AZ‒TX