Rhamphus oxyacanthae (Marsham, 1802)

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Crataegus monogyna, Brummen: summermines

detail, in transparancy

Rhamphus oxyacanthae larva

Crataegus monogyna, Amsterdamsche Bosch: larva in the mine

Rhamphus oxyacanthae: summer mines on Crartaeggus monogyna

Crataegus monogyna, Belgium, prov. East Flanders, Oudenaarde, bos t’Ename © Carina Van Steenwinkel: summer mines

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Crataegus monogyna, Amsterdam, autumn mine

 autumn mines on Crataegus momogyna

Crataegus monogyna, , Belgium, prov. Antwerp, Mol: najaars-mijnen © Carina Van Steenwinkel: autumn mines

hamphus oxyacanthae autumn mines on Crataegus spec.

Crategus spec., Belgium, prov. Luxembuorg, Durbuy, la vieille Briqueterie de Rome © Carina Van Steenwinkel: autumn mines

Rhamphus oxyacanthae: mines on Mespilus germanica

Mespilus germanica, Belgium, prov. East Flanders, Oudenaarde, bos t’Ename © Carina Van Steenwinkel

Rhamphus oxyacanthae mine

Prunus spinosa, Belgium, prov. Luxembourg, Resteigne © Jean-Yves Baugnée

Rhamphus oxyacanthae: mines on Prunus spinosa

Prunus spinosa, Belgium, prov. Luxembourg, Durbuy, la vieille Briqueterie de Rome © Carina Van Steenwinkel

mine

Usually a very small (but see below), pear-shaped, upper-surface blotch, most of it stuffed with reddish-brown frass. Often several mines in a leaf. Oviposition is already in May, but the larvae hatch late and initially develop very slowly; only against the end of summer the mines become apparent. The larvae remain the the mine: they hibernate in the fallen leaves (van Frankenhuyzen & Freriks, 1969c). The bright-coloured frass and their large number makes these mines very conspicuous in autumn, despite their small size. The weevils feed pinhole-sized windows in the leaf upperside (maturation feeding).

Mainly on hawthorn the mines take a quite different aspect in the autumn. Then they are comparatively large, full deptth blotch mines with granular, black, dispersed frass.

hostplants

Rosaceae, oligophagous

Amelanchier; Chaenomeles; Cotoneaster; Crataegus monogyna; Cydonia oblonga; Malus sylvestris; Mespilus germanica; Prunus avium, cerasus, domestica subsp. insititia, spinosa; Pyrus communis; Sorbus.

Crataegus is is the most important hortplant.

phenology

Mines are found from mid August till November; very common.

BENELUX

BE recorded (Curculionidae.be, 2010).

NE recorded (Heijerman, 1993a).

LUX recorded (Ellis, Kautenbach).

distribution within Europe

Most of Europe, including the British Isles, possibly excluding the Iberian Peninsula and the Balkan (Fauna Europaea, 2007, Morris, 1993a).

larva

references

Ahr (1966a), Buhr (1964a), Drăghia (1968a), van Frankenhuyzen & Houtman (1972a), van Frankenhuyzen Houtman & Kabos (1982a), Haase (1942a), Hering (1925a, 1930a, 1932g, 1957a), Kleine (1924a/1925a), Maček (1999a), Morris (1982a, 1993a), Nowakowski (1954a), Reinheimer & Hassler (2010a), Robbins (1991a), Sønderup (1949a), Tempère (1982a), Vorst (2010a), Zoerner (1969a, 1970a).

23/11/2016

mod 29.vii.2017