Rabdophaga salicis (Schrank, 1803)

on Salix

Rabdophaga salicis: gall on Salix cinerea

Salix cinerea, Belgium, prov. Namur, Romedenne; leg. Sébastien Carbonnelle © Gilles San Martin

Rabdophaga salicis galls

Salix cinerea, Hoek van Holland, leg Ben van As

Rabdophaga salicis gall

Salix aurita, Belgium, prov. Luxembourg, Bovigny, Chifontaine: old gall; © Jean-Yves Baugnée

Rabdophaga salicis pupa

pupa; contrary to the similar Rabdophaga dubiosa the pupa bears a pair of sturdy teeth between the spiracular horns.

gall

Multilocular, mostly all-sided, ± 10 mm thick and up to 50 mm long irregular swelling of a thin branch; sometime several together, than sometime coalescing. Often that bark is cracked and flaky. The dormant buds are irregularly distributed ver the surface. Fresh galls are green, old ones dark brown. Lesser galls also occur in the petioles and even the midrib. The gall chambers lie in all layers of the wood, each one with a single orange larva or pupa. Prior to emergence the puparium work themselves out of the gall at a randomly chosen spot; this in contrast to R. dubiosa, of which the pupa can only leave the gall by way of a dormant bud.

hostplants

Salicaceae, monophagous

Salix alba, arbuscula, aurita, babylonica, canariensis, caprea, cinerea, daphnoides, elaeagnos, excelsa, x fragilis, glabra, hastata, helvetica, myrsinites, nigra, pentandra, purpurea, repens.

Mainly Salix aurita, caprea, cinerea, repens.

phenology

A single generation per year. The larva hibernates in the gall and pupates there in spring.

larva

the mature larva is described by Nijveldt & Yukawa (1982a).


Rabdophaga salicis: spatulas

spatulas of specimens from Salix aurita (a, d), S. cinerea (b) and S. caprea (c) (from Rübsaamen, 1916a)

pupa

See Stelter (1980a). At the base of the prothoracic horns a distinct small tooth (absent in R. dubiosa).

synonyms

Cecidomyia, Dasineura, Dichelomyia, Rhabdophaga, salicis; Dichelomyia, Rhabdophaga noduli Rübsaamen, 1895.

inquilines

As a specialised predator lives in the galls Lestodiplosis gammae.

references

Barnes (1951a), Béguinot (2002e, 2005a, 2006a, 2012a), Bellmann (2012a), Bruun (2015a), Buhr (1965a), Cilbircioğlu & Ünal (2009a), Cogolludo (1921a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Deckert & Deckert (2016a), Dietrich (2016a), Docters van Leeuwen (1936a), Gagné (2010a), Hellrigl (2010a), Houard (1908a), Kieffer (1895b), Kollár (2011a), Kopelke & Amendt (2002a), Lambinon, Schneider & Feitz (2001b), Lehmann & Hannover (2016a), Löw (1888a), Mirumian (2011a), Nijveldt & Yukawa (1982a), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Rübsaamen (1892a, 1895b, 1916a), Simova-Tošić & Skuhravá (2001a), Simova-Tošić, Skuhravá & Skuhravý (1996a,b, 2000a, 2004a, 2007a), Simova-Tošić, Skuhravá, Skuhravý & Postolovski (2007a), Skrzypczyńska (2007a), Skuhravá (2006a), Skuhravá, Bayram, Çam ao (2005a), Skuhravá, Karimpour, Sadeghi ao (2014a), Skuhravá & Skuhravý (1994a, 1997a, 1999a, 2003a, 2010a, 2012a), Skuhravá, Skuhravý, Blasco-Zumeta & Pujade-Villar (2006a), Skuhravá, Skuhravý & Carbonnelle (2017a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Hellrigl (2001a, 2002a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Stelter (1956a, 1980a), Tomasi (2014a), Unal & Akkuzu (2009a).

mod 7.viii.2018