Stenus comma
This record describes Stenus comma (species). Recorded family: Staphylinidae. Recorded order: Coleoptera.
Identification and Appearance
Length 5.5 to 6 mm. This species has noticeable orange spots on the elytra. Other identifying features are black legs, hind tarsi nearly as long as hind tibia and the fact that the basal segment of the palps, and only the very base f the second segment are yellow. Stenus biguttatus is very similar, though is slightly smaller, and examination of the male genitalia is normally required. Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters. Usually near to the edge of water bodies, often manmade lakes and reservoirs. Has been recorded in most months of the year, with the peak between March and September. No additional images available for this species.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Staphylinoidea
- Family
- Staphylinidae (Rove Beetles)
- Subfamily
- Steninae
- Genus
- Stenus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Usually near to the edge of water bodies, often manmade lakes and reservoirs.
Seasonal Activity
Has been recorded in most months of the year, with the peak between March and September.
Additional species information
Recorded status
Fairly widespread in England and Wales.
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Stenus comma. 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.
Frequently Asked Questions About Stenus comma
What is Stenus comma?
Stenus comma is a species in the family Staphylinidae, within the order Coleoptera.
How big is Stenus comma?
5.5 to 6 mm. This species has noticeable orange spots on the elytra. Other identifying features are black legs, hind tarsi nearly as long as hind tibia and the fact that the basal segment of the palps, and only the very base f the second segment are yellow.
Where is Stenus comma found?
Habitat: Usually near to the edge of water bodies, often manmade lakes and reservoirs.
When is Stenus comma active?
Stenus comma: seasonal activity - Has been recorded in most months of the year, with the peak between March and September..