Calosoma (Calodrepa) scrutator (Fabricius, 1775)

Carabus scrutator Fabricius, 1775: 239 (syntype: Virginia; Natural History Museum, London)
Calosoma scrutator Breuning, 1927: 163
Calosoma (Calodrepa) scrutatrix Lapouge, 1932: 405
Calodrepa scrutator Jeannel, 1940: 77
Calosoma (Calodrepa) scrutator Gidaspow, 1959: 249
Calosoma (Calosoma) scrutator Erwin, 2007: 104

Length 25-35 mm. Quite large, has head and pronotum of violet colour and the pronotum has a red lateral margin, elytra are green with bronze luster and red lateral margin.
As it happens with the allied species C. wilcoxi, C. scrutator ranges across the entire of the United States but is more common in the eastern part. Moreover it occurs in southern Canada, and in Mexico, and Gidaspow (1963: 283) quotes captures in Guatemala and in Venezuela.

Examined specimens and literature’s data
Canada. Newfoundland; Ontario; Quebec: Montreal (Breuning, 1927: 164); New Brunswick; Nova Scotia: Sable Island (Bousquet, 2012: 231)
United States. Texas: Brazos county (SB), Smith county (SB), Willacy county (EM, SB), Starr county (EM), Nacogdoches county (SB), Curleson county, (SB) Tomball (SB); Illinois: Chicago (SB), Riverside (SB); Tennessee: Chattanooga (VV); Arkansas: Bluff City (SB); Maryland: Glenburnie (EM)
Mexico. Chihuahua (Gidaspow, 1959: 274); Sonora: Yecora (SB); Guerrero: Chilapa (SB); Vera Cruz: Tuxpan, Playa Vicente (Breuning, 1927: 164); Oaxaca: Salina Cruz (Breuning, 1927: 164)
Guatemala. Amatitlan, Huehuetenango (Gidaspow, 1963: 283)
Venezuela. CumanĂ  (Gidaspow, 1963: 283)

Notes: Winged, sometime diurnal but mostly nocturnal, attracted to light at night. Adults and larvae live mostly in forest and were reported feeding on various caterpillar as Alsophila pometaria, Paleacrita vernata, Malacosoma neustria, Erannis tiliaria, Alabama argillacea, Archips fervidana (Burgess & Collins 1917: 26). Adults have been found in the warm wet seasons from April to August and some specimens were found overwintering
A description of larval stages can be found in Burgess & Collins (1917: 31).

Calosoma (Calodrepa) scrutator
(Fabricius, 1775)
United States: Texas, Brazos county, College Station, april 1978
Calosoma (Calodrepa) scrutator
(Fabricius, 1775)
United States: Texas, Brazos county, College Station, april 1978