Saphanini
Guides
Michthisoma
Michthisoma is a genus of long-horned beetles (Cerambycidae) in the tribe Saphanini. The genus contains at least one described species, M. heterodoxum, which has been documented in the southeastern United States. Members of this genus are noted for their ant-mimicking appearance, specifically resembling small workers of Camponotus pennsylvanicus.
Michthisoma heterodoxum
Michthisoma heterodoxum is a small cerambycid beetle in the tribe Saphanini, first described by LeConte in 1850. The species is known for its remarkable morphological resemblance to small workers of the carpenter ant Camponotus pennsylvanicus, representing a case of myrmecomorphy (ant mimicry). This mimicry appears to be an evolutionary adaptation to avoid predation. The species has a restricted geographic range, occurring primarily in the southeastern Coastal Plain of the United States. Despite its distinctive appearance, the species appears to be rarely encountered in the field.