2021 Annual Report for: Cossidae / Cossinae

For species seen in 2021 that had less than or equal to 100 records, full details are included; for more common species, the earliest, latest and highest count by vice-county are shown. The narrative for each species is taken from the main Hantsmoths website, and it is possible that some information on abundance and occurrence can get out of date, as it is impossible to keep up with all changes; however it should give a good introduction to each species. The tables in each species account summarise the previous status, and that for the current year.

For the maps, all records prior to 2021 are shown by a blue dot (the larger the dot, the more recent), with the current year's records shown in red. As previous records are superimposed on any report for 2021, new sites have greater emphasis (i.e. will show as 'more red').

In the species accounts, an asterisk next to a location indicates a new 10km square record; earliest ever dates are highlighted in orange, and latest ever in red. Initials in the species accounts refer to the recorders listed here. Please get in touch if you identify any omissions or errors, in particular if you have records that have yet to be submitted. Details of how to submit records can be found here.

50.001 [B&F: 0162] Goat Moth Cossus cossus (Linnaeus, 1758) - Nb

Nationally scarce (Nb) in fens, marshes, river-banks, damp areas, golf courses, heaths and woodland edges in parts of the British Isles, less numerous in the north, predominantly coastal, a priority species under the UK Biodiversity Action Plan. In Hampshire and on the Isle of Wight mainly confined to the New Forest, with scattered records elsewhere. Wingspan male 68-84 mm, female 88-96 mm. The larvae feed internally in living wood or pith and take several years to mature. Whilst full-fed larvae are occasionally found wandering, and adults occasionally visit light, the 'easiest' way to gather evidence of this species is to find a 'Cossus tree', with multiple entrance holes indicating larval workings.

Records prior to 2021

Vice County #Records #Individuals First Record Last Record

2021 records

Vice County #Records #Individuals Max Quantity

Records by year

Records by week (adult)

Records by week (larval)

Record Details

VC11: Burley, NF, one, 21 Jul (NDP); Denny Wood, NF, larva, one, field observation, 18 Sep (GRE); larva, one, field observation, 11 Sep (DJon det. CJon); larva, one, field observation, 19 May (DAS); Denny Lodge Inclosure, NF, larva, present, field observation, 18 Sep (iNat); Marchwood, one, 14 Jun; one, 29 Jun (CTha); Brockenhurst, larva, present, field observation, 19 Sep (iNat); Woodlands, NF, present, 24 Jul (RBW); Totton, one, field observation, 25 Jun (SSto); one, 25 Jul (LHan); Dibden Purlieu, one, 26 Jul (RAC); Southampton Common, larva, one, field observation, 12 Sep (Anon det. PAB);

VC12: Kingsley, one, field observation, 13 Jun (Unknown det. MJW); larva, one, field observation, 13 Jun (MGol); Basingstoke Canal*, larva, one, field observation, full grown larva walking along towpath of Basingstoke Canal, 25 Sep (ATyn)