Glen Parva & Glenhills Nature Reserve - Species List

Key to the list at the end of each section:
Black - Bio Blitz 2015 not photographed
Blue - Bio Blitz 2015 photographed
Red - photographed & identified by Volunteers
Green - from NatureSpot
All pictures are taken on the reserve.
Hover over the following pictures to enlarge

Spiders, Harvestmen & Galls

Spiders are arachnids. They differ from insects in having only two parts to the body, eight legs not six, six or eight eyes (two in insects) and spinnerets on their abdomens that produce silk.
People usually think of spiders having eight eyes, but that’s not always true. While most spiders have eight eyes, there are some that only have six, and even some spiders that have fewer than six eyes. They always come in an even number, though – there are no cyclops spiders!

The Common Harvestman is familiar to us as the long-legged, small-bodied spider-like creature that frequents gardens and houses. Harvestmen are a common and widespread group of long-legged invertebrates and about 25 species live in the UK.

Common Orb Weaver Spider - Metellina segmentata
John F Sept 2016

This 8mm long spider is seen from July to October in among any vegetation or structure where it can build a web.
The spider, which eats flies and other small insects. gets its name from the orb-shaped web it spins and is pale yellow-brown in colour. The abdomen has an almost leaf-like pattern on it. Males have longer legs and are darker. When mating they enter the web of the female.

European Garden Spider - Araneus diadematus
John F Sept 2016

Adult spiders' colouring can range from extremely light yellow to very dark grey, but all European garden spiders have mottled markings across the back, with five or more large, white dots forming a cross. The white dots result from cells filled with guanine, which is a by-product of protein metabolism.
Adult females range in length from 6.5 to 20 mm, while males range from 5.5 to 13 mm. During mating, the much smaller male will approach the female cautiously. If not careful, he could end up being eaten by her

European Garden Spiderlings
Sue & Roy 20140422
Almost fluorescent yellow with a single round black blob on their backs, the spiders are the produce of the common Araneus diadematus - or cross orbweaver - species, which lays anywhere from 300 to 800 eggs each autumn.The mothering spider then cements her minuscule eggs together by covering them in a dense layer of coarse protective yellow silk and detritus - fragments of dead organisms and fecal matter - to protect them over the winter until they hatch in spring and early summer.

Linyphia hortensis
John F Sept 2016

This spider is commonly found on lower bushes and vegetation in a range of habitats including gardens. It spins a very noticeable horizontal sheet web and awaits the arrival of prey in an upside down position on the under side of the web. The species is adult in late summer and autumn.
It is one of the largest Money spiders.

Nursery Web Spider - Pisaura mirabilis
John F Sept 2017

Male length: 10-13 mm. Female length: 12-15 mm. They vary in colour from grey through orangey to dark brown. The abdomen is slender and is divided by a pale line and there are pale 'tear marks' at the sides of its eyes. Usually found in Nettle beds or other dense vegetation.
It likes to sunbathe and typically holds its front two pairs of legs together pointing forwards. During mating the male presents the female with a carefully wrapped insect as a present. The female carries her eggs in a ball shaped, pea-sized sack with her. Just before the babies hatch she builds a silk tent and puts them inside for protection. Feeds on flies and other small insects. It uses quick sprinting and strength to overpower its prey.

Knopper Gall - Andricus quercuscalicis
Sue & Roy August 2017

The Knopper Gall is caused by a tiny gall wasp, Andricus quercuscalicis. It produces ridged outgrowths on the acorns of our native Pedunculate Oak; forming in August they are sticky and red, later becoming woody and brown. A second generation then develops in the catkins of Turkey Oak.
The Knopper Gall is a nobbly, bowl-shaped protrusion from acorns.

Robin's Pincushion - Dipoloepis rosae
Joan Harris Jul 2020

The Robin's pincushion (also known as the 'Bedeguar Gall') is a gall caused by the larvae of a tiny gall wasp, Dipoloepis rosae. The gall is widespread and common, and can be found developing on the stems of Dog-roses during late summer; it acquires its reddish colour as it matures in autumn.

Smooth Spangle Gall - Neuroterus albipes
Sue & Roy Aug 2017

These galls are caused by the asexual generation of the gall wasp Neuroterus albipes (the sexual generation produces tiny egg-shaped galls between leaf nodes in the spring) and are never found in large numbers on a single leaf. Found on the underside of oak leaves, they measure up to 5mm across, are thin, flat, and hairless, and have a slightly raised rim. Their colour is cream or pale green but some specimens can have a dark pink red rim or blotches..

Bio Blitz ------ 26-06-2015 blue & black

Common Orb Weaver Spider - Metellina segmentata
Comb-footed Spider - Enoplognatha ovata
Cucumber Green Orb Spider - Araniella cucurbitina Sensu lato
European Garden Spider - Araneus diadematus
Knopper Gall - Andricus quercuscalicis
Linyphia hortensis
Nail Gall - Eriophyes tiliae
Nursery Web Spider - Pisaura mirabilis
Robin's Pin Cushion - Diplolepis rosae
Smooth Spangle Gall - Neuroterus albipes
Spider - Linyphia triangularis
Sycamore Gall - Aceria macrohycha
Tetragnatha extensa
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