Newly established and rarely collected aphids (Homoptera : Aphididae) in Florida and the southeastern United States

Several aphid species are reported as newly established in Florida and/or t he southeastern United States, including Acyrthosiphon kondoi Shinji,Aphis amaranthi Holman, Brachycaudus helichrysi (Kaltenbach), Coloradoa achilleae Hille Ris Lambers, Hyadaphis coriandri (Das), Hyperomyzus carduellinus (Th eobald), Melanaphis sp., Sehizaphis rotundiventris (Signoret), Shivaphis ce lti Das, Takecallis arundicolens (Clarke), and Toxoptera citricida (Kirkald y). Further establishment records are reported for Trichosiphonaphis polygo ni (van der Coot) that was previously reported from a few counties in Flori da and Georgia. Recent Florida finds are reported for three native species, including Aphis minima Tissot, Kaltenbachiella ulmifusa (Walsh & Riley), a nd Uroleucon elephantopicola Robinson. Identification information is provid ed for newly introduced exotic species.