Photo © Keith Tailby

Alder Kitten

Furcula bicuspis

Checklist Number
71.006 [B&F: 1996]

Verification
Record will require further evidence, at least a good photograph, unless CMR is aware recorder has confidence in identification

Classification

Family:Notodontidae
Subfamily:Cerurinae
Genus:Furcula
Species:bicuspis
Authority:(Borkhausen, 1790)

Local in woodland, thickets, copses and gardens, from Cornwall northwards through Wales and the west Midlands to south Lancashire, and in south-east England, Norfolk and Co. Durham. In Hampshire and Isle of Wight until 1945 there was only one record, at New Milton, the specimen of which was checked by Barry Goater. However 2022 saw the first for North Hampshire, at Woolmer, with a further five individuals in 2023 in the north of the county. Increased reports in Berkshire and Surrey indicate that this is a species that appears to be undertaking a welcome range expansion. Wingspan 40-48 mm. Compared with Sallow Kitten F. furcula and Poplar Kitten F. bifida, the central band is almost black (not grey), and distinctly pinched at its mid-point. Larva feeds on Alder, Silver Birch and Downy Birch, over-wintering as a pupa.

The abundance in each month is indicated as follows:

No records
Very occasional
Irregular
Uncommon
Off-peak, but not unusual
Off-peak, but not unusual
Main flight time
J F M A M J J A S O N D
Adult
Larval

Records by week (adult)

Records by week (larval)

No Larval records to show.

VC11 South Hampshire

Site Date Quantity Recorder Stage
New Milton (SZ29)01/06/1945oneR W WatsonAdult

VC12 North Hampshire

Site Date Quantity Recorder Stage
Hammer Vale, Woolmer (SU83)29/05/2022oneAndy SwanAdult
Whitehill (SU73)08/06/2023oneAndy StockerAdult
Hammer Vale, Woolmer (SU83)09/06/2023twoAndy SwanAdult
Fleet Pond (SU85)10/06/2023oneMike HalseyAdult
Hammer Vale, Woolmer (SU83)11/06/2023oneAndy SwanAdult
Whitehill (SU73)19/06/2023oneAndy StockerAdult