Olibrus aeneus
Supposedly the commonest (or most recorded) species of Olibrus in Norfolk but I'd recorded over 50 Olibrus of four different species before I found my first.
These were found together by suction at a site where I've regularly light-trapped over the last couple of years so I'm guessing this species may be more reluctant to come to light than some of the other Olibrus. It was obviously blacker than the Olibrus I'm more familiar with, and the way the sutural striae failed to converge towards the apex was another difference. They were just over 2mm long.
, Stanton Heath, 30-Jul-25 (B) (1).jpg)
, Stanton Heath, 30-Jul-25 (B) (2).jpg)
, Stanton Heath, 30-Jul-25 (B) (3).jpg)
, Stanton Heath, 30-Jul-25 (B) (5).jpg)
, Stanton Heath, 30-Jul-25 (B) (7).jpg)
, Stanton Heath, 30-Jul-25 (B) (6).jpg)
male Olibrus aeneus showing antenna, antennal club, elytral apices, elytral microsculpture and aedeagus (flat and side views), Wendling Beck Environment Project, 30th July 2025
, Stanton Heath, 30-Jul-25 (A) (3).jpg)
, Stanton Heath, 30-Jul-25 (A) (1).jpg)
, Stanton Heath, 30-Jul-25 (A) (2).jpg)
, Stanton Heath, 30-Jul-25 (A) (4).jpg)
, Stanton Heath, 30-Jul-25 (A) (6).jpg)
female Olibrus aeneus showing elytral apices and gonocoxa, Wendling Beck Environment Project, 4th March 2025
This one was found by suction nearby along with Olibrus liquidus and Olibrus affinis. At most angles the outer sutural stria was really faint.
, Gorgate, 25-Aug-25 (A) (2).jpg)
, Gorgate, 25-Aug-25 (A) (1).jpg)
, Gorgate, 25-Aug-25 (A) (3).jpg)
, Gorgate, 25-Aug-25 (A) (5).jpg)
, Gorgate, 25-Aug-25 (A) (6).jpg)
, Gorgate, 25-Aug-25 (A) (7).jpg)
, Gorgate, 25-Aug-25 (A) (8).jpg)
, Gorgate, 25-Aug-25 (A) (9).jpg)
female Olibrus aeneus showing elytral apices (2 views), spermatheca and oviposior apex with close-up of gonocoxae, Wendling Beck Environment Project, 25th August 2025