Tree Guide: Ash

Ash Fraxinus excelsior

Deciduous

Up to 40 metres tall

Leaves to 7cm long, arranged in alternating opposite pairs

Flowers, April-May, appearing before leaves

Fruit a single-seeded nut with wing, about 5cm long

Lunar Thorn

Selenia lunularia

Forewing length 16-22mm

Adults May-June

Larva late June-late August

Overwinters as a pupa

  

Ash Bud Moth

Prays fraxinella

 

 Forewing length 7-8mm

Adults May-October

Overwinters as larva

Pseudargyrotoza conwagana

       

 Forewing length 5-7mm

 Adults May-August

Silver-washed Fritillary

Argynnis paphia

Wingspan to 80mm

Adults June-August

Overwinters as larva on tree trunk

 

Tree Guide: Alder

Alder Alnus glutinosa

Deciduous

Up to 20 metres tall

(rarely to 40 metres)

 Leaves to 10cm long, elliptical or almost circular; dark green and hairless

Flowers in catkins, appearing before leaves from January to March

Fruit cone-like, woody and egg-shaped

Alder Moth

Acronicta alni

Forewing length 16-19mm

Adults May-June

Larva June-August

Overwinters as a pupa

 
 

May Highflyer

Hydriomena impluviata

Forewing length 13-16mm

Adults May-early July

Larva July-October

Overwinters as a pupa

Alder Sawfly

Eriocampa ovata       

                               

 

Size 10mm

Adults May-August