Calosoma haydeni
G.Horn, 1870
Hayden's caterpillar hunter
Calosoma haydeni is a ground beetle in the Carabidae, described by Horn in 1870. It belongs to the Calosoma, commonly known as caterpillar hunters. are brachypterous (short-winged), which limits their capability. The species occurs in Mexico and the southern United States, with two recognized showing distinct geographic distributions.
Pronunciation
How to pronounce Calosoma haydeni: /kæloʊˈsoʊmə haɪˈdɛnaɪ/
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Identification
are distinguished by brachypterous wings (shortened, non-functional for ). The nominate C. h. haydeni occurs in Chihuahua, Arizona, Colorado, New Mexico, and Texas. The subspecies C. h. punctulicolle (Bates, 1891), known as the holey-necked caterpillar hunter, is found in additional Mexican states including Coahuila, Distrito Federal, Durango, Nuevo León, and San Luis Potosí, plus Texas. Specific morphological differences between subspecies are not detailed in available sources.
Images
Distribution
Mexico and the southern United States. The nominate occurs in Chihuahua (Mexico), Arizona, Colorado, New Mexico, and Texas. The subspecies C. h. punctulicolle occurs in Chihuahua, Coahuila, Distrito Federal, Durango, Nuevo León, and San Luis Potosí in Mexico, plus Texas.