Species Account

Select species and region:


Distribution


 
 

Summary Data


Season (Adult / Immature):

National Status: Common

Local Status: Common and thinly distributed or restricted resident.

Local Record: Grade 3 adult, 2 leaf-mine   See here for explanation

Flight time:

Forewing: 2-3mm.

Foodplant: Hawthorn and Apple.

Regional breakdown:

 VC61VC62VC63VC64VC65
Year first recorded19532005198720012001
Year last recorded20142014201420142012
Number of records2513705721
Number of individuals4406300
Unique positions2313635419
Unique locations2113595218
Adult records10200
Immature records2413685717

For the county, we have a total of 186 records from 163 sites. First recorded in 1953.
 

Photos


0100 Stigmella oxyacanthella 04 mine on hawthorn
© Andy Nunn
0100 Stigmella oxyacanthella 03 mine on hawthorn
© Andy Nunn
0100 Stigmella oxyacanthella 02 tenanted mine
© Dave Shenton
0100 Stigmella oxyacanthella 01 mine
© Charlie Streets, Sept.24th 09.

Species Account


Most records are of leaf-mines.

Sutton & Beaumont, 1989: Old records are unreliable due to confusion with S. crataegella (Klimesch), however it appears to be widespread with reliable records from all five vice-counties.

2013 (CHF): Stigmella species mining hawthorn can be tricky and a firm identification cannot be achieved in every case. This species is most commonly mistaken for Stigmella crataegella which however mines much earlier in the year. Tenanted mines should not prove to be a problem as the bright green larva and pronounced coiling of the frass is characteristic. The mine is a long corridor that widens slightly, winding freely through the leaf and is not influenced by the venation. The brown frass is linear at first but quickly becomes coiled. Mines are tenanted in September and October. This species is commonest on hawthorn but is also seen on apple and to a lesser extent on pear, cotoneaster and other related plants. The main confusion species, Stigmella crataegella, has tenanted mines in June and July and the loops of coiled frass make more tight hairpin turms, often forming a secondary blotch. This species is common across all of the county.
 

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