ColeopteraRipiphoridae – Wedge-shaped Beetles

Ripiphorus epinomiae

This record describes Ripiphorus epinomiae (species). Recorded family: Ripiphoridae. Recorded order: Coleoptera.

Identification and Appearance

Ripiphorus epinomiae - Ripiphorus epinomiae
Contributed by Aaron Schusteff

From the key in Linsley & MacSwain, diagnostic characters for the female are: 1) First segment of posterior tarsus obliquely truncate at apex, usually elevated and shorter than following segments combined. 2) Head and thorax dark, abdomen wholly or partially reddish or yellow. 3) Antennae ten-segmented; pronotum, except smooth areas, very densely punctate; posterior tarsal claw with seven inner teeth. 5-8 mn. The male, as in the female, has the first segment of posterior tarsus obliquely truncate at apex and shorter than following segments combined...however, the abdomen is blackish-brown; the antennae are straw-yellow; and the posterior tarsi have 17 teeth on inner margin of the claw. Body length of the male is ~6 mm. Original description on first page of Linsley & MacSwain...see Print References below.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Polyphaga
Superfamily
Tenebrionoidea
Family
Ripiphoridae (Wedge-shaped Beetles)
Subfamily
Ripiphorinae
Genus
Ripiphorus

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

Additional species information

Species notes from the sources

Etymology: Multiple collections of this species were associated with the bee host species Nomia (Epinomia) nevadensis Cresson.

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Ripiphorus epinomiae. 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 Ripiphorus epinomiae (4)

Ripiphorus epinomiae - photo 1
Contributed by Aaron Schusteff
Ripiphorus epinomiae - photo 2
Contributed by Aaron Schusteff
Ripiphorus epinomiae - photo 3
Contributed by Aaron Schusteff
Ripiphorus epinomiae - photo 4
Contributed by Aaron Schusteff

Photo credits: Contributed by Aaron Schusteff

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

Photo credits: Contributed by Aaron Schusteff. Contributors retain copyright over their individual contributions.