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

N.B. Links to the latest version of 'Leafminers and plant galls of Europe' are being edited

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Cerodontha morosa Meigen, 1830
[Diptera: Agromyzidae]

Cerodontha morosa Meigen, 1830. Syst. Beschr. 6: 170
Agromyza grossicornis Zetterstedt, 1860. Diptera Scandanaviae 14: 6456
Dizygomyza (Dizygomyza) morosa Meigen, 1830; Hendel, 1931. Fliegen palaearkt. Reg. 6(2): 90
?Genus? soenderupi Hering, 1941.
Dizygomyza soenderupi (Hering, 1941); Frey, 1950. Notul. ent. 30: 11, misidentification
Cerodontha (Dizygomyza) morosa Meigen, 1830; Nowakowski, 1967. Polskie Pismo ent. 37: 644
Cerodontha (Dizygomyza) soenderupi Hering, 1941; Nowakowski, 1972. Polskie Pismo ent. 42(4): 760, as a var. of morosa
Cerodontha (Dizygomyza) morosa Meigen, 1830; Nowakowski, 1972. Polskie Pismo ent. 42(4): 760
Cerodontha (Dizygomyza) morosa Meigen, 1830; Spencer, 1976. Fauna ent. Scand. 5(1): 218, fig. 377.
Cerodontha (Dizygomyza) morosa Meigen, 1830; Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 350 (fig. 1329), 351, 352
Cerodontha (Dizygomyza) gallica Nowakowski, 1967. Polskie Pismo ent. 37(4): 644
Cerodontha (Dizygomyza) gallica Nowakowski, 1967; Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 348, 351
Cerodontha islandica Griffiths 1968
Cerodontha graminiphila Garg, 1971.


Leaf-mine: Mines and larvae indistinguishable from C. suturalis. Mine relatively short and broad, not extending into leaf base. Pupation in the mine (Spencer, 1976: 218).

Long, upper-surface corridor, mainly in the central part of the blade. The mines descends, but changes direction a few times. Frass in one big lump. Pupation in the mine (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 Nowakowski (1973).

Described by Hering (1926b), Nowakowski (1973) and Beri (1971b, as graminiphila). Posterior spiracles with 3 elongated bulbs; 2 of them are curved around the base of the spiracles. At least part of the descriptions by de Meijere (1928a, 1934a, 1938a) refer to other species (Bladmineerders van Europa).

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).

Short and deeply segmented (Spencer, 1976: 218).

Hosts in Great Britain & Ireland: Currently unknown.

Hosts elsewhere:

Cyperaceae        
Carex       Spencer, 1976: 218
Carex       Spencer, 1990: 351
Carex acuta Slender Tufted-sedge British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Carex acutiformis Lesser Pond-sedge British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Carex brizoides     Bladmineerders van Europa
Carex echinata Star Sedge British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Carex elata Tufted-sedge British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Carex hirta Hairy Sedge British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Carex pallescens Pale Sedge British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Carex panicea Carnation Sedge British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Carex riparia Greater Pond-sedge British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Carex rostrata Bottle Sedge   Bladmineerders van Europa
Carex vesicaria Bladder-sedge British Wild Flowers by John Somerville et al. Bladmineerders van Europa
Carex vulpina True Fox-sedge   Bladmineerders van Europa

Time of year - larvae: May-June, possibly later a second generation (Bladmineerders van Europa).

Time of year - adults: Currently unknown.

Distribution in Great Britain & Ireland: Added to British checklist by Henshaw in Chandler, 1998: 137. Recorded from Easterness, North Somerset and South-west Yorkshire (NBN Atlas).

Also recorded in the Republic of Ireland (Martinez in Fauna Europaea).

Distribution elsewhere: Widespread in continental Europe (Spencer, 1990: 349) including Austria, Belarus, Canary Is., Czech Republic, Denmark, Estonia, Finland, French mainland, Germany, Hungary, Iceland, Italian mainland, Latvia, Lithuania, Madeira, Norwegian mainland, Poland, Slovakia, Spanish mainland, Sweden, Switzerland, The Netherlands and Ukraine (Martinez in Fauna Europaea).

NBN Atlas links to known host species:

Carex acuta, Carex acutiformis, Carex echinata, Carex elata, Carex hirta, Carex pallescens, Carex panicea, Carex riparia, Carex rostrata, Carex vesicaria, Carex vulpina

British and Irish Parasitoids in Britain and elsewhere:

Chalcidoidea  
Chrysocharis polyzo (Walker, 1839) Eulophidae: Entedoninae
Ichneumonoidea  
Apodesmia similis (Sz├ępligeti, 1898) Braconidae: Opiinae


External links: Search the internet:
Biodiversity Heritage Library
Bladmineerders van Europa
British leafminers
Encyclopedia of Life
Fauna Europaea
NBN Atlas
NHM UK Checklist
Find using Google
Find using Google Scholar
Find images using Google


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