Dysaphis devecta (Walker, 1849)

rosy leaf-curling apple aphid

on Malus

Dysaphis cf devecta: gall on Malus domestica

Malus domestica ‘Golden Noble’, UK, Norfolk, Downham Market, 8.vi.2019 © Rob Edmunds

Dysaphis cf devecta: gall on Malus domestica

serious galling

Dysaphis devecta: alatiform immatures on Malus domestica

Malus domestica, UK © Bob Dransfield & Bob Brightwell, InfluentialPoints: immature alatae

gall

The aphids, 2-3 mm, are bluish-grey, wax-powdered. There is no host plant alternation, therefore this species can also in summer be found on apple. The fundatrix makes a small gall by downfolding the lamina of the leaf tip. Her progeny causes the leaves to become rolled inwards towards the midrib, intensely reddened. The aphids feed preferably at the lesser veins of the leaf disk.

host plants

Rosaceae, monophagous

Malus domestica, floribunda, x prunifolia, x purpurea, sylvestris.

references

Barbagallo, Binazzi, Pennacchio & Pollini (2011a), Bellmann (2012a), Blackman & Eastop (2014), Buga & Stekolshchikov (2012a), Buhr (1964b), Chireceanu, Chiriloaie, Teodoru & Sivu (2015a), Forrest & Dixon (1975a), Heie (1992a), Hellrigl (2004a), Ianovici, Matica & Scurtu (2010a), Lambinon Schneider & Feitz (2012a), Lampel & Meier (2007a), Papapanagiotou, Nathanailidou, Taylor ao (2012a), Petrović (1998a), Redfern & Shirley (2011a), Ripka, Reider & Szalay-Marzsó (1998a), Roskam (2009a), Wojciechowski, Depa, Halgoš ao (2016a).

mod 10.vii.2019