Entries from May 1, 2014 - May 31, 2014

Friday
May162014

Tephritid Fly

One of several Chaetorellia jaceae (Diptera: Tephritidae) that I came across on hogweed (Heracleum sphondylium).  This is not this species' normal host plant which is knapweed (Centaurea sp), but there were plenty of knapweed plants nearby. 

I took one fly as a specimen and later identified it using the key of White (in Tephritid Flies, 1993).

Photos taken in the Wilderness, Whiteknights Park, Reading, UK on 2014-05-05.

Thursday
May152014

Hoverflies

From last summer: a pair of Chrysogaster sp, probably Chrysogaster solstitialis (Diptera: Syrphidae), male at the top, female at the bottom.

Photo taken in the Wilderness, Whiteknights Park, Reading, UK, on 2013-08-18.

Wednesday
May142014

Leaf Spot Fungus

A leaf from a lime tree (Tilia sp) with pale spots.  The above photo shows that upper surface of the leaf, below is the lower surface:

Under the microscope the pale parts are revealed to be masses of fungal hyphae:

I have not (yet) been able to identify the fungus.

Specimen in first 2 photos taken in Whiteknights Park, Reading, UK, on 2014-05-03, that in the 3rd photo taken in the same place on 2014-05-12.

Tuesday
May132014

Tachinid Fly

What I think is a male Blepharipa schineri (Diptera: Tachinidae).  Identified using Chris Raper's and Matt Smith's revision 5c of Belshaw's 1993 Key which was distributed for their Tachinid Workshop in February 2014.  I include a few more photos as evidence for this identification.

Details of the face:

The hind tibia has a Sturmia bella-like comb of anterodorsal bristles:

The middle tibia has 3 anterodorsal bristles (Sturmia bella has only 1 or 2):

Tergites 1+2, 3 have no median marginal bristles (in Blepharipa pratensis they do):

Specimen taken in Whiteknights Park, Reading, UK, on 2014-05-09.

Monday
May122014

Tephritid Fly

Tephritis hyoscyami (Diptera: Tephritidae).  This species is associated with thistles of Carduus sp.

Specimen taken in the field below Chazey Wood, near Caversham, UK, on 2014-05-04.

Page 1 ... 2 3 4 5 6 ... 7 Next 5 Entries ยป