ColeopteraTenebrionidae – Darkling Beetles

Philolithus aeger

This record describes Philolithus aeger (species). Recorded family: Tenebrionidae. Recorded order: Coleoptera.

Identification and Appearance

Philolithus aeger - Philolithus aeger
Contributed by Hartmut Wisch; Additional contributions by Mike Quinn , v belov

Body black and shining. Punctures on the pronotum small and sparse (coarser & denser in Ph. sordidus ). The discal costae (ridges) are somewhat flattened, and the medial costae is nearly absent, or indistinct (clearly raised in sordida ).

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Polyphaga
Superfamily
Tenebrionoidea
Family
Tenebrionidae (Darkling Beetles)
Subfamily
Pimeliinae
Tribe
Asidini
Genus
Philolithus

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

Habitat and Range

Habitat

Grasslands and shrublands

Geographic Range

so. NM to sw. TX - Map , uncommon

Seasonal Activity

Aug to mid-Nov

Additional species information

Species notes from the sources

Etymology: Philolithus aeger (LeConte 1858)

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Philolithus aeger. 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.

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Frequently Asked Questions About Philolithus aeger

What is Philolithus aeger?

Philolithus aeger is a species in the family Tenebrionidae, within the order Coleoptera.

How do you identify Philolithus aeger?

Body black and shining. Punctures on the pronotum small and sparse (coarser & denser in Ph. sordidus ). The discal costae (ridges) are somewhat flattened, and the medial costae is nearly absent, or indistinct (clearly raised in sordida ).

Where is Philolithus aeger found?
FeatureDetails
HabitatGrasslands and shrublands
Rangeso. NM to sw. TX - Map , uncommon
When is Philolithus aeger active?

Philolithus aeger: seasonal activity - Aug to mid-Nov.

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

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