Lasioglossum sexnotatum (Kirby,1802)

Synonyms

Lasioglossum nitidum CURTIS 1833

 

Distribution

A southern, restricted species, occurring mainly in East Anglia and Surrey. It is also known from the Channel Islands (Sark). Old information for Hampshire, Devon, Cornwall and Lancashire requires confirmation. Abroad, this is a central and southern Palaearctic species, widely distributed and sometimes common in Europe. Found from Spain east to Mongolia.

Status (in Britain only)

Listed in the Appendix of Shirt (1987), i.e. thought to be extinct, and as RDB1 in Falk (1991). Since 2001, there have been over a dozen localities discovered in south-east Suffolk.  There have also been sporadic records from Breckland in both Suffolk and Norfolk.

Habitat

In Suffolk and Norfolk, it has been recorded from sandy heath (including golf courses), breckland heath, gardens, allotments and areas of waste ground on light, sandy soils.

Flight period

Univoltine. The British flight period is hard to determine, due to the paucity of data but the female appears in April and both sexes have been found in August. In Poland, Pesenko et al. (2000) state that both sexes can be found for nearly the whole flight period, April to October. It is felt likely that this long flight period will be mirrored in the resurgent Suffolk population.

Pollen collected

Abroad, the species is widely polylectic. In 2017, a small study of bees around Ipswich in Suffolk yielded pollens from a very wide range of plants, including trees and shrubs (willow Salix spp., maples Acer spp. and Buckthorn Rhamnus cathartica), shrubby rose family plants (in the Sorbus/Rosa/Rubus pollen group), yellow daisy family plants (two different groups: ‘fenestrate’ and Senecio types) and poppies (two different genera: Papaver and Glaucium). 

Nesting biology

Apparently, the nesting biology has not been established, even where the species is common abroad.  In 2018, a female was found to be nesting in a lawn in a suburban garden in Ipswich, Suffolk, climbing down blades of grass to reach the burrow entrance in a sparsely vegetated patch.

Flowers visited

Recent observations on flowers visited include Bramble (Rubus fruticosus agg.), White Bryony (Bryonia dioica), dandelion (Taraxacum sp.), Common Figwort (Scrophularia nodosa), Buckthorn (Rhamnus cathartica), Hemlock (Conium maculatum), Foxglove (Digitalis purpurea), poppies (Papaver sp.) and ragwort (Senecio jacobaea). Some of these plants may represent pollen sources.

Parasites

No information available.

Author of profile

G W Allen.

Updated by A. Knowles, 2017 and 2020.

Year profile last updated

Proofed: January 2012

Updated: June 2017