Tetraneura akinire

Tetraneura ulmi

Galls of both [T. ulmi and T. nigriabdominalis] are stalked and located on the upper side of a leaf. Galls of T. (T.) nigriabdominalis are hairy, elongate or pouch shaped, usually with a pointed apex, whereas the galls formed by T.(T.) ulmi are smooth and shiny and bean shaped(Fig.3). When mature, the galls of T. (T.) nigriabdominalis are usually bicoloured green and rose-red, and those formed by T.(T.) ulmi are reddish-green or yellowish. Galls of both species can co-occur on the same leaf blade(Fig. 3).

Its primary host constitutes different species of Ulmus (e.g. U. canescens Melville, U. davidiana var. japonica Rehder, U. parvifolia Jacq, U. minor Mill., U. pumila L.). Secondary hosts are numerous species of Poaceae family from the genera Agropyron...It is also one of the most important rice pests.

Galls of both [T. ulmi and T. nigriabdominalis] are stalked and located on the upper side of a leaf. Galls of T. (T.) nigriabdominalis are hairy, elongate or pouch shaped, usually with a pointed apex, whereas the galls formed by T. (T.) ulmi are smooth and shiny and bean shaped (Fig.3). When mature, the galls of T. (T.) nigriabdominalis are usually bicoloured green and rose-red, and those formed by T. (T.) ulmi are reddish-green or yellowish. Galls of both species can co-occur on the same leaf blade (Fig. 3).

Tetraneura (Tetraneurella) nigriabdominalis (Hemiptera: Aphidoidea) – a species extending its range in Europe, and morphological comparison with Tetraneura (Tetraneura) ulmi