Hemitrioza sonchi Crawford, 1914

Halbert, Susan E. & Burckhardt, Daniel, 2020, The psyllids (Hemiptera: Psylloidea) of Florida: newly established and rarely collected taxa and checklist, Insecta Mundi 2020 (788), pp. 1-88 : 62

Hemitrioza sonchi Crawford, 1914

( Fig. 181 )

Materials examined. USA: Florida: Alachua County : Gainesville, Arredondo ( FSCA, dry and slide mounted).

Diagnosis. Forewings have a dark cross band and partly infuscated marginal cells. The body is orange and white. Separated from other Florida psyllids as indicated in the generic key above.

Distribution. Eastern USA ( Hodkinson 1988) (FL) ( Mead 1984a, b).

Host plants. Lactuca graminifolia Michx. and possibly also on Sonchus L. spp. (Compositae).

Comments. Hemitrioza sonchi is a rare species reported from Florida (Clay County) for the first time in 1984 ( Mead 1984a, b). There are additional records from Alachua County (FSCA# E2005-2615, E2007-3944). It induces waxy pit galls on the leaves of its host (Mead 1984).

Kuwayama Crawford, 1911

Figures

Figures 181–184. Triozidae. 181) Hemitrioza sonchi: immatures with waxy secretions. 182) Leuronota maritima: immature with wax stands on the abdomen. 183) Leuronota maritima: roll gall with immatures. 184) Damage on Avicennia germinans by Leuronota maritima. (Photos by Jeff Lotz, FDACS, DPI: 181; David Ziesk, FDACS, DPI 182, 183; Susan Halbert, FDACS, DPI: 184).