Description of the larvae of Cotinis aliena Woodruff, 2008 (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini), with a key to the known larvae of New World Gymnetini.

The larvae of Cotinis aliena Woodruff, 2008 (Coleoptera: Scarabaeidae: Cetoniinae: Gymnetini), from the type locality in the Florida Keys (United States of America), are described and illustrated for the first time and compared with the known larvae of other Cotinis Burmeister, 1842 species. A revised key to the known third instars of New World Gymnetini is provided.

Methyl 2-(methylthio)benzoate: a sex attractant for the June beetles, Phyllophaga tristis and P. apicata.

Male antennae of Phyllophaga tristis (Fabricius) (Coleoptera: Scarabaeidae: Melolonthinae) were tested using a coupled gas chromatograph-electroantennogram detector (GC-EAD) system for electrophysiological responses to five sex pheromones identified from other Phyllophaga species including L-valine methyl ester, L-isoleucine methyl ester, L-leucine methyl ester, methyl 2(methylthio)benzoate and methyl 2-amino benzoate. Male antennae responded only to methyl 2(methylthio)benzoate. In a 2003 field test near Greensburg, Kansas, cross-vane traps baited with rubber septa containing 1 mg of methyl 2-(methylthio)benzoate captured 466 male P. tristis. Control traps baited with rubber septa loaded with only hexane captured none. Similarly, in a field test in 2010 in Gainesville, Florida, 265 male P. apicata Reinhard were captured in traps baited with 1 mg of methyl 2-(methylthio)benzoate whereas control traps captured only a single male.