Calosoma (Callitropa) macrum LeConte, 1853

Calosoma macrum LeConte, 1853: 400 (described from: Texas); syntypes in Museum of Comparative Zoology, Harvard University, Cambridge, Ma. (https://mczbase.mcz.harvard.edu/)
Calosoma (Callitropa) macrum Breuning, 1928: 117
Callitropa (Paratropa) macra Lapouge, 1932: 385
Callitropa (s. str.) macrum Jeannel, 1940: 213
Calosoma (Callitropa) macrum Gidaspow, 1959: 274
Calosoma (Callitropa) macra Erwin, 2007: 98


Length 24-30 mm. As already mentioned, C. externum, C. macrum and C. protractum constitute, among the other species we collect toghether in the subgenus Callitropa, a group well characterized by the elongated shape. Moreover they are all winged with longer than wide metaepisterna.
C. macrum is easily recognized among the others because the striae on the elytra are very faint, almost obliterated, while there are large punctures spread on their basal part. Its upper body is black with blue reflections.
It is found in south-eastern United States and northern Mexico.

Examined specimens and literature’s data
Mexico. Nuevo Leon: Monterrey (Gidaspow, 1959: 274), Tamaulipas: Nuevo Laredo (Breuning, 1928a: 118)
United States. Arizona: St. Cruz County (http://bugguide.net/); Arkansas (Jeannel, 1940: 214); Illinois: Cairo (EM); Colorado: Boulder (www.inaturalist.org/obs/14249110); Kentucky: Green County (EM); Louisiana (Burgess & Collins, 1917: 25); Nebraska: Lincoln (EM); Oklahoma: Ardmore (EM); Texas: San Antonio (SB), Bexar county (SB), Bosque county (www.gbif.org), Brazos county (SB), Caldwell county (www.gbif.org), Dallas (UASM), Ellis county (http://bugguide.net/), Frio county (UASM), Kimble county (www.gbif.org), McCulloch county (www.gbif.org), Montague county (www.gbif.org). Travis county (UASM), Victoria county (UASM), Charlotte, El Paso, Fredericksburg, Clifton, Dripping Springs, San Marcos, Boerne, Luling, Reno, Hamilton, Lometa, Mills County, Hamilton County, Hays County, Val Verde County, Wise County, Parker County, Stephens County (www.inaturalist.org)

Notes: Winged, often attracted to light at night. It lives on midland from 1000m to 1600m (Erwin, 2007: 98). Active individuals have been found from April to November, according to data of the examined materials.

Calosoma (Callitropa) macrum
LeConte, 1853
United States, Texas: San Antonio
Calosoma (Callitropa) macrum
LeConte, 1853
United States, Texas: San Antonio

updated October 3 2020

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