Saperda tridentata Olivier, 1800

Chapman, Eric G., Richards, Austin B. & Dupuis, Julian R., 2023, The longhorn beetles (Coleoptera: Cerambycidae) of Kentucky with notes on larval hosts, adult nectar use, and semiochemical attraction, Zootaxa 5229 (1), pp. 1-89 : 52

Saperda tridentata Olivier, 1800 ; Saperdini “elm borer”

Distribution: NS to south FL to eastern TX to northern UT to southern MB. Kentucky collections are statewide; Map 167).

Kentucky counties: Adair (1), Breathitt (4), Bullitt (2), Caldwell (1), Christian (1), Fayette (43), Franklin (1), Grant (1), Henderson (1), Hopkins (2), Jefferson (11), Jessamine (3), Letcher (1), Madison (5), McCracken (1), Meade (1), Nelson (1), Oldham (1), Owen (1), Powell (1), Pulaski (1), Rowan (1), Warren (4), nr (1)

Years: 1893 (20), 1900 (2), 1901 (1), 1902 (1), 1924 (1), 1938 (1), 1943 (1), 1953 (1), 1955 (1), 1957 (2), 1959 (1), 1960 (1), 1961 (1), 1962 (2), 1963 (1), 1965 (1), 1966 (1), 1967 (1), 1968 (2), 1969 (1), 1970 (3), 1971 (1), 1973 (5), 1975 (2), 1979 (2), 1980 (2), 1981 (1), 1983 (1), 2007 (1), 2008 (1), 2010 (1), 2011 (1), 2012 (1), 2013 (1), 2014 (1), 2015 (1), 2016 (7), 2017 (2), 2018 (1), 2019 (3), 2020 (4), 2021 (2), nr (3)

Months: February (1), April (1), May (33), June (27), July (14), August (11), nr (3)

Collections (69 records, 90 specimens): ABRC (4), AMBC (2), BG (4), CNHM (1), EGCCRC (6), FlorC (1), NMSU (2), PDBC (2), UKIC (53), WKUC (6), iNat (8), nr (1)

Collection methods: Malaise trap (11); Light (5); reared from Ulmus (11); panel trap baited with: monochamol (1), α-pinene (1)

Larval host plants: Dead and dying Ulmus spp. ( Bousquet et al. 2017)

Comments: Primarily nocturnal—attracted to lights. Malaise traps are also effective. It is interesting that while some species restricted to feeding on elms have declined with the decline of elms (e.g., Physocnemum brevilineum ), S. tridentata remains the most frequently collected member of this genus in Kentucky.