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Chirosia grossicauda Strobl, 1899 [Diptera: Anthomyiidae]. Chirosia grossicauda Strobl, 1899. Wien. ent. Ztg. 18: 222. Chirosia parvicornis auctt., not Zetterstedt, 1845 [Misidentification].

Leaf-mine: The larva mines the lower surface of rachis, close to the lesf tip. The upper surface is left intact, resulting in growth disturbance that causes the leaf tip to strongly curl downwards. Larva generally solitary. Pupation within the roll (Bladmineerders van Europa). The mine is also also described and illustrated in British leafminers. Mines of Chirosia grossicauda on Pteridium aqulinum Image: Willem Ellis (Bladmineerders van Europa) Larva: The larva is described by de Meijere (1911) and illustrated in Bladmineerders van Europa. The larval mouthparts are illustrated in British leafminers. Puparium: Details unknown. Comments: Included in Redfern et al. (2002: 397, fig 645) in keys to galls, although the diagnostic features state the 'white larva mines along main vein'. Ackland in Chandler (1978) did not indicate whether his host record was British or Foreign and is therefore included under 'Hosts in Britain' and 'Hosts elsewhere'. Hosts in Britain: Dennstaedtiaceae       ? Pteridium     Ackland in Chandler, 1978: 227, as parvicornis Pteridium aquilinum Bracken British leafminers Pteridium aquilinum Bracken Robbins, 1991: 20 Hosts elsewhere: Aspleniaceae       Asplenium     Bladmineerders van Europa Asplenium     Hennig, 1966-73 Asplenium     Hering, 1957 Dennstaedtiaceae       ? Pteridium     Ackland in Chandler, 1978: 227, as parvicornis Pteridium aquilinum Bracken Bladmineerders van Europa Pteridium aquilinum Bracken Hennig, 1966-73 Pteridium aquilinum Bracken Hering, 1957 Dryopteridaceae       Dryopteris     Bladmineerders van Europa Dryopteris     Hennig, 1966-73 Time of year - mines: August - October (British leafminers). Time of year - adults: Unknown. Distribution in Great Britain & Ireland: Common and widely distributed. Dorset, Hants, Cambridge, Sussex (Mike Ackland, pers. comm.); Warwick (Robbins, 1991), East Ross, Easterness and South Devon (NBN Gateway distribution map - DF and HBRG). Also recorded in the Republic of Ireland (Michelsen, in Fauna Europaea). NBN Grid map: Distribution elsewhere: Widespread in Europe including The Netherlands (Bladmineerders van Europa) and Belgium (Gosseries & Ackland, 1991), Croatia, Czech Republic, Denmark, Finland, French mainland, Germany, Lithuanaia, Norwegian mainland, Russia - Central and North, Slovakia, Spanish mainland and Sweden (Michelsen, in Fauna Europaea). Also recorded East Palaearctic Region (Michelsen, in Fauna Europaea). NBN interactive distribution maps of known host species in Britain and elsewhere: Pteridium aquilinum Parasitoids in Britain and elsewhere: Unknown.

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Last updated 10-Aug-2010  Brian Pitkin