Zelkovaphis trinacriae, a new Eriosomatine aphid genus and species living on Zelkova in Sicily (Rhynchota: Aphididae)

Abstract

A new Eriosomatine aphid (Zelkovaphis trinacriae gen. n., sp. n.) living
on Zelkova sicula in Sicily is described. To the same genus are tentatively referred
the W-Asiatic Schizoneura caucasica Dzhibladze, living on Z. carpinifolia in
Caucasus, and the E-Asiatic Hemipodaphis persimilis Akimoto, living on Z.
serrata in Japan; a key is given to separate al ate emigrants of the three aphid
species. A taxonomical and morphological account is given of the new genus,
focussing on its relationships with other Eriosomatinae genera. Adult morphs of
Z. trinacriae on primary host and first instar nymphs of fundatrix and exules are
described, and notes are added on its open, leaf-roll gall and biological behaviour.
The aphid secondary host plant is hitherto unknown.