ColeopteraChrysomelidae – Leaf Beetles

Cryptocephalus merus

This record describes Cryptocephalus merus (species). Recorded family: Chrysomelidae. Recorded order: Coleoptera.

Identification and Appearance

Cryptocephalus merus - Cryptocephalus merus
Contributed by Mike Quinn; Additional contributions by Edward Ruden

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Polyphaga
Superfamily
Chrysomeloidea
Family
Chrysomelidae (Leaf Beetles)
Subfamily
Cryptocephalinae
Tribe
Cryptocephalini
Genus
Cryptocephalus

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

Habitat and Range

Geographic Range

AZ, w. & s. TX - Map Nine specimens in USNM examined by White were from Texas and Arizona.

Diet and Behavior

Diet: One specimen collected in AZ from Rhus (Anacardiaceae) ( 4 )

Additional species information

Species notes from the sources

Etymology: Cryptocephalus merus Fall 1932

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Cryptocephalus merus. 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 Cryptocephalus merus (5)

Cryptocephalus merus - photo 1
Contributed by Mike Quinn; Additional contributions by Edward Ruden
Cryptocephalus merus - photo 2
Contributed by Mike Quinn; Additional contributions by Edward Ruden
Cryptocephalus merus - photo 3
Contributed by Mike Quinn; Additional contributions by Edward Ruden
Cryptocephalus merus - photo 4
Contributed by Mike Quinn; Additional contributions by Edward Ruden
Cryptocephalus merus - photo 5
Contributed by Mike Quinn; Additional contributions by Edward Ruden

Photo credits: Contributed by Mike Quinn; Additional contributions by Edward Ruden

Frequently Asked Questions About Cryptocephalus merus

How big is Cryptocephalus merus?

Length: 3.8 to 4.3 mm

Where is Cryptocephalus merus found?

Range: AZ, w. & s. TX - Map Nine specimens in USNM examined by White were from Texas and Arizona.

What does Cryptocephalus merus eat?

The diet of the Cryptocephalus merus includes One specimen collected in AZ from Rhus (Anacardiaceae) ( 4 ).

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

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