Thereva nobilitata (Fabricius)

Thereva nobilitata (Fabricius) View in CoL

Specimens examined (26). BC: Central Saanich, Island View Beach; Central Saanich, Mt. Newton; Central Saanich, Saanichton; Esquimalt, Saxe Point Park; Saanich, Prospect Lake; Sidney; Vancouver, Convention Centre; Victoria, Beaver Lake Road; Victoria, Lost Lake; Victoria, Beacon Hill Park; Victoria, Holland Point; Victoria, Ten Mile Point. PFC, RBCM, SEM.

Database and literature records (11). BC: Cloverdale; New Westminster; Vancouver; Vancouver, Point Grey; Vancouver, University of BC. CNCI, KCH, MEI, TAMU, USNM.

iNaturalist records (4).BC:Delta(iNat219882783), Lantzville(iNat 233342721); Richmond(iNat 214675887), Victoria (iNat 169319936).

Conservation status. BC: SNA

Distributional notes. Thereva nobilitata is the only alien therevid known in British Columbia. It was originally introduced to the Vancouver area from Europe, where it is common ( Holston & Irwin 2005). It is also recorded from southern Vancouver Island. The first BC record we have seen is from New Westminster in 1969 (MEI).

Ecoprovinces and other designations. BC: Georgia Depression.

Range. Introduced. Palaearctic, where it is native. In North America , it is also known from Ontario and Washington State (iNaturalist) .

Biological notes. Flight period: 6 May–5 August. This introduced therevid is typical of urban and suburban habitats in extreme southwestern British Columbia.