The leaf and stem mines of British flies and other insects
 

(Coleoptera, Diptera, Hymenoptera and Lepidoptera)

by Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds

Join us on Facebook

Cerodontha denticornis (Panzer, 1806)
[Diptera: Agromyzidae]

Chlorops denticornis Panzer, 1806. Faunae insect. germ. Fasc. 104: Tab. 22
Agromyza tarsella Zetterstedt, 1848. Diptera Scandinaviae. 7 Diptera Scandinaviae. 7 : 2763
Cerodontha denticornis (Panzer, 1806); Hendel, 1920. Archiv für Naturgeschichte [a] 84(7): PAGE
Cerodontha denticornis (Panzer, 1806); Hendel, 1932. Fliegen palaearkt. Reg. 6(2): 269
Cerodontha denticornis (Panzer, 1806); Sasakawa, 1961. Pacif. Insects 3: 387
Cerodontha denticornis (Panzer, 1806); Nowakowski, 1967. Polskie Pismo ent. 37: 657-8
Cerodontha denticornis (Panzer, 1806); Nowakowski, 1972. Polskie Pismo ent. 42(4): 739
Cerodontha (Cerodontha) denticornis (Panzer, 1806); Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 107
Cerodontha (Cerodontha) denticornis (Panzer, 1806); Spencer, 1976. Fauna ent. Scand. 5(1): 178-9, figs 318-9.
Cerodontha (Cerodontha) denticornis (Panzer, 1806); Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 354, 355, 356, 364, 365, 366 (figs 1365-6).


Leaf-mine: Larva feeds mainly in the leaf sheaths. The short mines which may be formed in the leaf blade may be easily overlooked. Pupation internal (Spencer, 1976: 178).

Mine begins as a narrow, usually upper-surface, occasionally lower-surface or interparenchymatous corridor in the blade, that descends towards the ligule, thence continues into the leaf sheath, generally on its inside. Usually only one mine per leaf. Puparium in a pupariuml chamber at the margin of the leaf sheath. Neither mine nor larva can be distinguished from that of C. fulvipes that, as far as is known, only feeds on Poa trivialis (Bladmineerders van Europa).

Larva: The larvae of flies are leg-less maggots without a head capsule (see examples). They never have thoracic or abdominal legs. They do not have chewing mouthparts, although they do have a characteristic cephalo-pharyngeal skeleton (see examples), usually visible internally through the body wall.

The larva is described by Venturi (1946), Sasakawa (1961), Nowakowski (1973), Dempewolf (2001: 120) and Darvas, Skuhravá and Andersen (2000).

Puparium: The puparia of flies are formed within the hardened last larval skin or puparium and as a result sheaths enclosing head appendages, wings and legs are not visible externally (see examples).

Comments: Festuca gigantea is treated as Schedonorus gigantea (Giant Fescue) and Festuca pratensis is treated as Schedonorus pratensis (Meadow Fescue) by Stace (2010).

Hosts in Great Britain & Ireland:

Poaceae        
Alopecurus pratensis Meadow Foxtail British Wild Flowers by John Somerville et al. Spencer, 1972b: 122
Elymus       Pitkin & Plant
Elymus repens Common Couch British Wild Flowers by John Somerville et al. Spencer, 1972b: 122
Festuca gigantea Giant Fescue British Wild Flowers by John Somerville et al. Spencer, 1972b: 123
Festuca pratensis Meadow Fescue   Spencer, 1972b: 123
Holcus lanatus Yorkshire-fog British Wild Flowers by John Somerville et al. Spencer, 1972b: 123
Phalaris arundinacea Reed Canary-grass British Wild Flowers by John Somerville et al. Spencer, 1972b: 124

Hosts elsewhere:

Poaceae        
Alopecurus       Spencer, 1976: 178
Alopecurus       Spencer, 1990: 354
Alopecurus pratensis Meadow Foxtail British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Arundo donax     Bladmineerders van Europa
Avena       Spencer, 1976: 178
Avena       Bladmineerders van Europa
Calamagrostis       Spencer, 1976: 178
Calamagrostis       Spencer, 1990: 354
Calamagrostis arundinacea     Bladmineerders van Europa
Calamagrostis epigejos Wood Small-reed British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Dactylis       Spencer, 1976: 178
Dactylis       Spencer, 1990: 355
Dactylis glomerata Cock's-foot British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Elymus repens Common Couch British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Elytrigia       Spencer, 1976: 178, as Agropyron
Elytrigia       Spencer, 1990: 356, as Agropyron
Festuca       Spencer, 1976: 178
Festuca       Spencer, 1990: 355
Festuca gigantea Giant Fescue British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Festuca pratensis Meadow Fescue   Bladmineerders van Europa
Holcus       Spencer, 1976: 178
Holcus       Spencer, 1990: 354
Holcus lanatus Yorkshire-fog British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Holcus mollis Creeping Soft-grass   Dempewolf, 2001: 120
Holcus mollis Creeping Soft-grass   Bladmineerders van Europa
Hordeum       Spencer, 1976: 178
Hordeum       Spencer, 1990: 356
Hordeum vulgare Six-rowed Barley   Bladmineerders van Europa
Lolium       Spencer, 1990: 355
Phalaris       Spencer, 1976: 178
Phalaris       Spencer, 1990: 355
Phalaris arundinacea Reed Canary-grass British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Phleum       Spencer, 1990: 355
Phleum pratense Timothy British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Poa       Spencer, 1990: 355
Poa       Bladmineerders van Europa
Secale       Bladmineerders van Europa
Secale cereale Rye   Spencer, 1990: 356
Triticum       Spencer, 1976: 178
Triticum       Spencer, 1990: 356
Triticum aestivum Bread Wheat   Bladmineerders van Europa

Time of year - mines: June-September, sometimes October (Bladmineerders van Europa).

Time of year - adults: June.

Distribution in Great Britain & Ireland: Widespread from the south to Scotland, most northerly record Outer Hebrides (Lewis: Melbost) (Spencer, 1972b: 107), most southerly record Channel Is. (Martinez in Fauna Europaea); Breconshire (VC42), Caernarvonshire (VC49), Cambridgeshire (VC29), Cardiganshire (VC46), Carmarthenshire (VC44), Cumberland (VC70), East Gloucestershire (VC33), East Suffolk (VC25), East Sussex (VC14), Easterness (VC96), Glamorganshire (VC41), Huntingdonshire (VC31), Middlesex (VC21), Monmouthshire (VC35), North Essex (VC19), North Hampshire (VC12), North Somerset (VC6), Northamptonshire (VC32), Nottinghamshire (VC56), Pembrokeshire (VC45), Shropshire (VC40), South Aberdeenshire (VC92), South Devon (VC3), South Lancashire (VC59), South Wiltshire (VC8), Staffordshire (VC39), West Cornwall (VC1), West Gloucestershire (VC34), West Kent (VC16), West Lancashire (VC60), West Suffolk (VC26), West Sussex (VC13), Westmorland (VC69) and Worcestershire (NBN Gateway).

Also recorded in the Republic of Ireland: Co. Clare and Co. Mayo (Spencer, 1972b: 107).

NBN Grid Map:

NBN Grid Map

Cerodontha denticornis
NBN Grid Map : NBN Terms and Conditions

Maps are only displayed if the NBN server is active. N.B. Only publicly available records, if any, are shown by default

Distribution elsewhere: Very common in Europe including Denmark, Finland, Norway, Sweden and Sicily (Spencer, 1976: 178), The Netherlands (Bladmineerders van Europa), Belgium (de Bruyn and von Tschirnhaus, 1991), Germany (Spencer, 1976: 550; Dempewolf, 2001: 120), Austria, Bulgaria, Canary Is., Czech Republic, Greek mainland, Hungary, Lithuania, Madeira, Poland, Slovakia, Spanish mainland, Switzerland and Yugoslavia (Martinez in Fauna Europaea).

Also recorded in north Africa (Morocco) and Japan (Spencer, 1976: 178).

NBN Interactive Grid Maps of known host species:

Alopecurus pratensis, Calamagrostis epigejos, Dactylis glomerata, Elymus repens, Festuca gigantea (= Schedonorus gigantea), Festuca pratensis (= Schedonorus pratensis), Holcus lanatus, Holcus mollis, Hordeum vulgare, Phalaris arundinacea, Phleum pratense, Secale cereale, Triticum aestivum

British and Irish Parasitoids in Britain and elsewhere:

Ichneumonoidea  
Chorebus crenulatus (Thomson, 1895) Braconidae: Alysiinae
Phaedrotoma aethiops (Haliday, 1837) Braconidae: Opiinae
Phaedrotoma depeculator (Förster, 1862) Braconidae: Opiinae
Rhogadopsis reconditor Wesmael, 1835 Braconidae: Opiinae


External links: Search the internet:

Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Gateway

NHM UK Checklist

Find using Google
Find using Google Scholar
Find images using Google


XHTML Validator Last updated 26-Jul-2016 Brian Pitkin Top of page