Friday
Sep192014

Lauxaniid Flies

From last year: a pair of Lauxaniid flies (Diptera: Lauxaniidae) mating on a nettle leaf.  I don't know the species nor the genus.

Photo taken in the Wilderness, Whiteknights Park, Reading, UK, on 2013-09-28.

 

Thursday
Sep182014

Canada Geese

From a year and a half ago: a female Canada goose (Branta candensis) with its young.

Photo taken beside the top lake, Whiteknights Park, Reading, UK, on 2013-05-18.

Wednesday
Sep172014

Some differences between Linnaemya picta and Linnaemya tesselans

This year I have collected many specimens of Linnaemya picta but, so far, only one Linnaemya tesselans.

Here are some photos that illustrate two of the differences between these two species.

L. picta (also L. rossica):  "Gena with larger black hairs/small bristles - some of which are at least half the thickness of the bristles below the vibrissa":

L. tesselans:  "Gena with only fine hairs (at least some of the lower ones also fair) - distinct from the single line of bristles extending down from the vibrissa":

L. picta (also L. rossica):  "Costal cell with a uniform covering of microscopic hairs":

L. tesselans:  "Costal cell of the wing with only approximately half its area covered in the microscopic hairs found over most of the wing":

Tuesday
Sep162014

Young Pigeon

A juvenile wood pigeon (Columba palumbus) that landed on our window ledge on Sunday afternoon. 

Photo taken in Reading, UK, on 2014-09-14.

Monday
Sep152014

Anthomyiid Fly

What I think is a male Anthomyia plurinotata (Diptera: Anthomyiidae).  Identified by comparing the pattern on the top of the thorax with the patterns in this post at Diptera.info.

This is the second member of this species I have come across: in the spring of 2013 I photographed a female (see here).

Specimen taken in the Wilderness, Whiteknights Park, Reading, UK, on 2014-09-13.