Cavariella theobaldi (Gillette & Bragg, 1918)

willow – parsnip aphid

on Salix, primary host plant

parasite

Apterae ± 2 mm, in spring colonies on leaves and new growth, yellowish-green to green

host plants

Salicaceae, monophagous

Salix alba,aurita, babylonica, caprea, cinerea, x fragilis, lapponum, myrsinifolia, pentandra, purpurea, repens, triandra.

on Apiaceae, secondary host plant

Cavariella theobaldi: aptera on Heracleum spec.

Heracleum spec., UK © Bob Dransfield & Bob Brightwell, InfluentialPoints

Cavariella theobaldi apterae on Heracleum sphondylium

Heracleum sphondylium, Biddinghuizen, Spijk- en Bremerbergbos 20.vii.2018 © Hans Jonkman; mixed colony with black ? Aphis farinosa

parasite

Apterae bright green; the siphunculi are cylindrical or slightly tapering, contrary to the similar C. pastinacae, that has somewhat swollen siphunculi.

host plants

Apiaceae, oligophagous

Aegopodium podagraria; Angelica sylvestris; Chaerophyllum hirsutum; Conium maculatum; Heracleum mantegazzianum, sphondylium & subsp. pyrenaicum + sibiricum; Pastinaca hirsuta, sativa; Peucedanum altissimum.

Mainly on Heracleum and Pastinaca.

From Spain also reported on Cakile maritima.

references

Barbagallo, Binazzi, Pennacchio & Pollini (2011a), Barbagallo & Massimino Cocuzza (2014a), Barbagallo & Pollini (2014a), Basky (2014a), Blackman & Eastop (2017), Buga & Stekolshchikov (2012a), Buhr (1964b), Danielsson (1974a), Dransfield & Brightwell (2015a), Durak, Durak & Borowiak-Sobkowiak (0000a), Hansen, Hattendorf & Nentwig (2005a), Hansen, Hattendorf, Wittenberg ao (2006a), Heie (1992), Hellrigl (2004a), Lampel & Meier (2007a), Müller (1986a), Nieto Nafría & Mier Durante (1982a), Nieto Nafría, Muñoz Martínez & Mier Durante (1987a), Osiadacz & Wojciechowski (2008a), Pérez Hidalgo, Martínez Peláez & Nieto Nafría (2001a), Petrović (1998a), Rakauskas & Trukšinaitė (2011a), Roskam (2009a), Suay Cano & González Funes (1998b), Tambs-Lyche (1970a), Wojciechowski, Depa, Halgoš ao (2016a).