Morley’s Final Catalogue: Bentley (Pyett), ahundant on oaks in the woods there in both May and July, as well as in Assington Thicks, Parham, Darsham," Rendham, Henstead, Blythbro, Aspall (Mly); Aldeburgh in 1928 and Flixton (Ctw); Leiston (Grey). Monks-park wood and West Stow (Mly).

Recent Status: A common species in Suffolk and Britain, possibly under-recorded..

Life Style: A double brooded species that can be found from April to September. The larvae feed on Quercus species. They pupate in the larval habitation in a frass covered cocoon. The pupal stage passes the winter.

Identification: There are four similar species of Phyllonorycter that are white basally and weakly marked. P. harrisella, P. roboris. P. heegeriella and P. tenerella. P. roboris has a bright ochre mark at the wing base. This species is not recorded in Suffolk but is recorded in the Waveney valley in Norfolk. P. heegeriella has a narrow dark long basal streak. P. harrisella has three costal marks and P. tenerella has four. P. tenerella is particularly variable and can have the ground colour dark suffused and be more strongly marked.
The larvae of P. harrisella create a short (14 mm at maturity) blister blotch variously placed on the underside of a leaf that shows just one large crease. More Info

Verification Grade Comment: Mine: Reared or puparium cremasters examined.

	Mine: Moth needs to be reared and, in some cases, possibly dissected.

Recorded in 29 (50%) of 58 10k Squares. First Recorded in 1928. Last Recorded in 2023. Additional Stats

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