Tetraneura nigriabdominalis (Sasaki, 1899)

oriental grassroot aphid, rice root aphid

on Ulmus, primary host plant

Tetraneura nigriabdominalis gall

Ulmus minor, Spain, prov. Salamanca, Ledesma © Nicolás Pérez

Tetraneura nigriabdominalis: galls on Ulmus minor

Ulmus minor, France, dép. Haute-Garonne, Avignonet-Lauragais © Catherine Reymonet

Tetraneura nigriabdominalis: galls on Ulmus minor

opened gall with apterae

Tetraneura nigriabdominalis: mass occurrence of young galls

Ulmus minor, France, dép. Haute-Garonne, Avignonet-Lauragais © Catherine Reymonet; massive occurrence of young galls (mid May)

Tetraneura nigriabdominalis: mass occurrence of young galls

detail

Tetraneura nigriabdominalis + ulmi

Ulmus minor, France, dép. Haute-Garonne, Avignonet-Lauragais © Catherine Reymonet: next to a gall of T ulmi

Tetraneura nigriabdominalis + ulmi

a few days later

Tetraneura nigriabdominalis: galls on Ulmus spec.

Ulmus spec., Belgium, prov. Antwerp, Meerhout © Carina Van Steenwinkel

Tetraneura nigriabdominalis: galls on Ulmus spec.

Ulmus spec., Belgium, prov. Antwerp, Mol © Carina Van Steenwinkel: mass occurrence

Tetraneura nigriabdominalis: galls on Ulmus spec.

Ulmus spec., Loenen (Ge), 22.v.2019: again mixed occurrence with Tetraneura ulmi© Arnold Grosscurt

Tetraneura nigriabdominalis: galls on Ulmus spec.

another image

Tetraneura nigriabdominalis: galls on Ulmus minor

Ulmus minor, France, dép. Dordogne, Saint-Cyprien, 28.iv-4.v.2019 © Arnold Grosscurt: mass occurrence

Tetraneura nigriabdominalis: galls on Ulmus minor

detail

host plants

Ulmaceae, monophagous

Ulmus glabra, minor & subsp. canescens, procera, pumila.

gall

the gall is more or less intensively red, covered with glandular hairs. The apex is ± pointed.


on Poaceae, secondary host plants

gall

2-3 mm large, greenish- to brownish-white aphids on the roots.

host plants

Poaceae, oligophagous

Agropyron“; Cynodon; Digitaria; Echinochloa; Eragrostis; Oryza; Saccharum; Setaria verticillata; Sorghum; Triticum; Zea mays.

distribution within Europe

(PESI, 2018); also Belgium (pictures above).

synonyms

Tetraneura, Tetraneurella, akinire Sasaki, 1904.

notes

A serious pest on rice. As is testified by recent observations of the species in Poland (Walczak ao), Belgium and the Netherlands, the species is expanding northwards. Walczak ao tentatively associate this with the rise in maize cultivation; this also might explain the occurrence of local mass occurrences.

references

Barbagallo, Binazzi, Pennacchio & Pollini (2011a), Barbagallo & Massimino Cocuzza (2014a), Bellmann (2012a), Blackman & Eastop (2014), Braggion (2013a), Deckert & Deckert (2016a), Hellrigl (2004a), Mifsud, Pérez Hidalgo & Barbagallo (2009a), Modic, Razinger & Urek (2012), Nieto Nafría, Mier Durante, Binazzi & Pérez Hidalgo (2002a), Osiadacz & Hałaj (2012a), Pellizzari (2010a), Pérez Hidalgo, Martínez Peláez & Nieto Nafría (2001a), Pérez Hidalgo & Umaran del Campo (2013a), Ripka, Reider & Szalay-Marzsó (1998a), Suay Cano & González Funes (1998c), Walczak, Borowiak-Sobkowiak & Wilkaniec (2017a), Wojciechowski, Depa, Halgoš ao (2016a).

mod 29.vi.2019