Stag Beetle

A male stag beetle, Lucanus cervus (Coleoptera: Lucanidae).

This specimen was taken on The Warren, Caversham, UK on 2019-05-25 and was released after being photographed.

Sciomyzid Fly

A male Sepedon sphegea (Diptera: Sciomyzidae).  Identified using the key of Rozkosny, 1984.

Specimen taken beside the Jubilee River, near Taplow, UK on 2019-03-30.

Sepsid Flies

A male Themira superba (Diptera: Sepsidae).  Identified using the key of Pont & Meier, 2002.

This is a female:

Specimens taken in Whiteknights Park, Reading, UK on 2018-06-02.

Muscid Fly

A male Lispocephala erythrocera (Diptera: Muscidae).  Identified using the key of Fonseca, 1968.

A side view of the genitalia:

And an oblique one:

Specimen taken in the wood around Kings Meadow Tescos, Reading, UK on 2019-01-26.

Lauxaniid Fly

A male Pseudolyciella stylata (Diptera: Lauxaniidae).  Identified using Schacht et al's 2004 translation of the key in Shatalkin, 2000.

The genitalia of the males of this species are very distinctive with their very long asymmetric paramere:

Specimen take in The Wilderness, Whiteknights Park, Reading, UK on 2018-11-03.