Monochamus scutellatus (Say, 1824)

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 : 45-46

Monochamus scutellatus (Say, 1824) ; Lamiini “whitespotted sawyer” [new state record]

Distribution: A transcontinental species that ranges from NF to northern FL to CA to northern AK but being largely absent from the Great Plains region. Kentucky collections are from the eastern two thirds of the state (Map 108).

Kentucky counties: Cumberland (1), Fleming (1), Lee (1), Madison (6), McCreary (1), Nelson (1), Powell (2), Warren (1)

Years: 1984 (1), 1991 (1), 2003 (1), 2015 (1), 2016 (6), 2018 (2), 2019 (1), 2020 (1)

Months: April (5), May (6), June (3)

Collections (11 records, 14 specimens): AMBC (1), EGCCRC (4), PDBC (2), UKIC (2), WKUC (1), iNat (4)

Collection methods: Pinus (1); panel trap baited with α-pinene (5), monochamol (1)

Larval host plants: Abies spp. , Larix laricina , Picea glauca , Pinus spp. , Pseudotsuga spp. and Tsuga spp. ( Monné & Nearns 2022d)

Chemical lures: Monochamol, ethanol + α -pinene, ethanol + α- and β -pinene, and monoterpenes ( Hanks & Millar 2013) and turpentine ( Gardiner 1957)

Comments: A spring species in Kentucky, often found on trunks of recently damaged or dead hosts ( Bousquet et al. 2017).

Monochamus titillator (Fabricius, 1775) ; Lamiini “southern pine sawyer”

Distribution: ME to south FL to eastern TX to MO; also introduced into the Caribbean ( Cuba, Puerto Rico, Bahamas and Bermuda; ( Monné & Nearns 2022d). Kentucky collections are nearly statewide (only missing from the Mississippi ecoregions in the far west; Map 109).

Kentucky counties: Barren (2), Fayette (11), Harlan (1), Henderson (1), Hopkins (1), Jefferson (1), Lee (1), Madison (3), Mercer (1), Montgomery (1), Powell (2), Pulaski (1), Rowan (1), Whitley (1)

Years: 1901 (3), 1910 (1), 1928 (2), 1931 (1), 1937 (1), 1939 (1), 1941 (1), 1942 (1), 1950 (1), 1957 (1), 1959 (1), 1962 (1), 1979 (2), 2003 (1), 2008 (1), 2010 (2), 2011 (1), 2014 (1), 2015 (3), 2018 (1), 2019 (1)

Months: May (3), June (11), July (8), August (4), September (2)

Collections (28 records, 28 specimens): ABRC (2), AMBC (2), CMNH (1), CNC (1), EGCCRC (4), FlorC (1), PDBC (1), UKIC (16)

Collection methods: Light (5); lumber/wood in home (12); panel trap baited with α-pinene (2), α- & β-pinene (1)

Larval host plants: Abies balsamea and Pinus spp. ( Monné & Nearns 2022d)

Chemical lures: A blend of ipsdienol, ipsenol and cis-verbenol ( Billings & Cameron 1984), ipsenol alone or combined with lanierone and/or ipsdienol (D. R. Miller & Asaro 2005) or binary combinations of ethanol + α -pinene or ipsenol + ipsdienol (D. R. Miller et al. 2011)

Comments: Attracted to lights.

Note: Oberea species are typically diurnal and fly when disturbed. They are probably best collected by sweeping or beating their host plants or with Malaise traps (most Kentucky specimens were taken with Malaise traps), as no chemical lures have been identified for any Oberea species. Beating or sweeping their living hosts can be effective as members of this genus attack living plants ( Bousquet et al. 2017). Species can be challenging to identify with recent works attempting to clarify taxonomy (e.g., Bousquet et al. 2017; Yanega 1996), but the genus could benefit from a modern revision, as there is some disagreement among these authors regarding the identity of two species.