ColeopteraTenebrionidae – Darkling Beetles

Dinomus horni

This record describes Dinomus horni (species). Recorded family: Tenebrionidae. Recorded order: Coleoptera.

Identification and Appearance

Dinomus horni - Dinomus horni
Contributed by Mike Quinn; Additional contributions by v belov
FeatureDescription
Additional detailsModerately elongate, piceous or black, moderately shining.
AntennaeAntennae rather slender, nearly reaching the middle of the body, outer joints scarcely wider and very little compressed.
HeadHead moderately denselv punctured.
ThoraxThorax wider than long, apex and base equal, truncate, sides moderately arcuate, a little more strongly in front of middle, margin acute, hind angles sharply rectangular, disc moderately convex, coarsely ami densely punctured.
ElytraElytra with rows of large, very deeply impressed, slightly elongate punctures (emphasis added), intervals narrower sparsely punctulate. Det. E. G. Riley, 2009

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Polyphaga
Superfamily
Tenebrionoidea
Family
Tenebrionidae (Darkling Beetles)
Subfamily
Tenebrioninae
Tribe
Helopini
Genus
Dinomus

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

Habitat and Range

Geographic Range

c. to s.TX - Map

Additional species information

Species notes from the sources

Etymology: Dinomus horni Aalbu & Johnston 2025

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Dinomus horni. 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 Dinomus horni (2)

Dinomus horni - photo 1
Contributed by Mike Quinn; Additional contributions by v belov
Dinomus horni - photo 2
Contributed by Mike Quinn; Additional contributions by v belov

Photo credits: Contributed by Mike Quinn; Additional contributions by v belov

Frequently Asked Questions About Dinomus horni

What is Dinomus horni?

Dinomus horni is a species in the family Tenebrionidae, within the order Coleoptera.

How big is Dinomus horni?

7.5 mm (type)

How do you identify Dinomus horni?
FeatureDescription
Additional detailsModerately elongate, piceous or black, moderately shining.
AntennaeAntennae rather slender, nearly reaching the middle of the body, outer joints scarcely wider and very little compressed.
HeadHead moderately denselv punctured.
ThoraxThorax wider than long, apex and base equal, truncate, sides moderately arcuate, a little more strongly in front of middle, margin acute, hind angles sharply rectangular, disc moderately convex, coarsely ami densely punctured.
ElytraElytra with rows of large, very deeply impressed, slightly elongate punctures (emphasis added), intervals narrower sparsely punctulate. Det. E. G. Riley, 2009
Where is Dinomus horni found?

Range: c. to s.TX - Map

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

Photo credits: Contributed by Mike Quinn; Additional contributions by v belov. Contributors retain copyright over their individual contributions.