Streptanus sordidus
This came to light in a small grassy area at the edge of wet woodland. I keyed it using the RES key and checked the genitalia against the diagrams in Biedermann & Niedringhaus.
, Dillington Carr, 17-Sep-24 (A) (1).jpg)
, Dillington Carr, 17-Sep-24 (A) (4).jpg)
, Dillington Carr, 17-Sep-24 (A) (3).jpg)
, Dillington Carr, 17-Sep-24 (A) (10).jpg)
, Dillington Carr, 17-Sep-24 (A) (9).jpg)
, Dillington Carr, 17-Sep-24 (A) (5).jpg)
, Dillington Carr, 17-Sep-24 (A) (6).jpg)
, Dillington Carr, 17-Sep-24 (A) (2).jpg)
, Dillington Carr, 17-Sep-24 (A) (12).jpg)
, Dillington Carr, 17-Sep-24 (A) (13).jpg)
, Dillington Carr, 17-Sep-24 (A) (14).jpg)
male Streptanus sordidus showing vertex, frons, forewing, abdomen (dorsal), tip of abdomen (from side, above and below) and aedeagus (in situ, side and flat), Wendling Beck Environment Project (Norfolk, UK), 17th September 2024
This was found in exactly the same place as the last one but by suction. It was a little small (3.1mm) and being a little unsure about some of the characters separating it from other Streptanus species I checked the aedeagus. The subgenital plates are more square-cornered than shown in Biedermann & Niedringhaus but the aedeagus clears up any doubt.
, Dillington Carr, 30-Jul-25 (A) (1).jpg)
, Dillington Carr, 30-Jul-25 (A) (2).jpg)
, Dillington Carr, 30-Jul-25 (A) (4).jpg)
, Dillington Carr, 30-Jul-25 (A) (5).jpg)
, Dillington Carr, 30-Jul-25 (A) (10).jpg)
, Dillington Carr, 30-Jul-25 (A) (6).jpg)
, Dillington Carr, 30-Jul-25 (A) (7).jpg)
, Dillington Carr, 30-Jul-25 (A) (8).jpg)
, Dillington Carr, 30-Jul-25 (A) (11).jpg)
, Dillington Carr, 30-Jul-25 (A) (12).jpg)
male Streptanus sordidus showing vertex, frons, abdomen (dorsal), tip of abdomen (from below, side and above) and aedeagus (side and flat views), Wendling Beck Environment Project (Norfolk, UK), 30th July 2025