Calosoma aurocinctum

Chaudoir, 1850

gold-ringed caterpillar hunter, Texas Green Calosoma

Calosoma aurocinctum is a large ground beetle in the Carabinae, commonly known as the gold-ringed caterpillar hunter or Texas Green Calosoma. It was described by Maximilien Chaudoir in 1850. The occurs from Texas south through Mexico to Central America, inhabiting lowland to mid-elevation areas. As a member of the caterpillar hunter Calosoma, it likely exhibits arboreal foraging to prey on caterpillars, though specific behavioral observations for this species are limited.

Calosoma aurocinctum (34759586341) by Insects Unlocked . Used under a CC0 license.

Pronunciation

How to pronounce Calosoma aurocinctum: /kæloʊˈsoʊmə ɔːroʊˈsɪŋktəm/

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Identification

Distinguished from other Calosoma by the 'gold-ringed' pattern implied by its ; from other ground beetles by large size, exposed forward-directed , and with segments longer than wide; from darkling beetles (Tenebrionidae) by exposed mandibles, rapid running , and antennae structure

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Habitat

Lowland to midland areas; specific microhabitat details not documented for this

Distribution

Guatemala, Mexico, Nicaragua, and Texas (USA); ranges from southern United States through Middle America

Diet

Presumed to prey on caterpillars based on membership and , but specific prey records for this are not documented

Behavior

Likely arboreal foraging typical of Calosoma caterpillar hunters, ascending trees to hunt prey; rapid running when disturbed characteristic of the

Ecological Role

; likely contributes to caterpillar control in forest

Human Relevance

Potential agent for caterpillar pests; no documented negative impacts

Similar Taxa

  • Calosoma scrutatorSimilar large size and caterpillar-hunting ; C. scrutator has more intense purple pronotal coloration and elongated
  • Calosoma wilcoxiSimilar arboreal foraging and ; C. wilcoxi is smaller (about one-third the size) and lacks the 'gold-ringed' pattern
  • Calosoma sayiSame with similar large size and predatory habits; C. sayi is uniformly black without metallic or gold markings

More Details

Taxonomic note

The was described by Chaudoir in 1850, not 1950 as stated in some sources. GBIF records confirm the 1850 date.

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Sources and further reading