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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 (Nederlandse bladmineerders). The mine is also illustrated in British leafminers. Mines of Chirosia grossicauda on Pteridium aqulinum. Image: Willem Ellis (Source: Nederlandse bladmineerders) Larva: The larva is described by de Meijere (1911) and illustrated in Nederlandse bladmineerders. Puparium: Details unknown. Comments: Included in Redfern et al. (2002: 397, fig 645) in keys to galls, although the diagnostic features state 'a white larva mines along main vein'. Hosts in Britain: Dennstaedtiaceae       Pteridium     Ackland, 1978: 227, as parvicornis Pteridium aquilinum Bracken Robbins, 1991: 20 Hosts elsewhere: Aspleniaceae       Asplenium     Nederlandse bladmineerders Asplenium     Hennig, 1966-73 Asplenium     Hering, 1957a Dennstaedtiaceae       Pteridium aquilinum Bracken Nederlandse bladmineerders Pteridium aquilinum Bracken Hennig, 1966-73 Pteridium aquilinum Bracken Hering, 1957a Dryopteridaceae       Dryopteris     Hennig, 1966-73 Time of year - mines: Unknown. Time of year - adults: Unknown. Distribution in Britain: 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, 2004 in Fauna Europaea). Distribution elsewhere: Europe including The Netherlands (Nederlandse bladmineerders) 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, 2004 in Fauna Europaea). Also recorded East Palaearctic Region (Michelsen, 2004 in Fauna Europaea). Parasitoids: Unknown.

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Last updated 16-Aug-2008  Brian Pitkin