Common pond skater (Gerris lacustris)

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Common pond skater fact file

Common pond skater description

KingdomAnimalia
PhylumArthropoda
ClassInsecta
OrderHemiptera
FamilyGerridae
GenusGerris (1)

The common pond skater (Gerris lacustris) is one of the most widespread British bugs. It is brownish-black in colour, with a narrow body. The forelegs are short and used for grasping and holding prey. The middle and hind legs are long and slender; the hind pair are used as 'rudders', while the middle pair of legs are used to propel the bug along the surface of the water (3) with either a rowing or a jumping motion (4). All true bugs have sucking mouthparts, known as a rostrum or 'beak' (3); this pond skater has a short, powerful rostrum (2). Both winged and wingless forms occur; in winged pond skaters the wings are held folded flat against the body (3).

Size
Length: 8-10 mm (2)
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Common pond skater biology

Adults emerge after over wintering towards the end of April or in early May, and females lay eggs in May. The eggs take around 12 to 14 days to develop, but the time taken until hatching is dependent on the temperature. Bugs undergo a type of development known as incomplete metamorphosis in which the larvae or 'nymphs' progress through a series of moults. The stages between moults are known as 'instars'; in this species there are 5 instars, each one progressively longer than the last. It takes between 24 and 30 days for pond skater larvae to develop into adults, with winged forms taking longer to reach maturity (3).

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Common pond skater range

The common pond skater is found throughout the British Isles, with the exception of the Outer Hebrides and the Shetland Isles (3).

You can view distribution information for this species at the National Biodiversity Network Gateway.
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Common pond skater habitat

Inhabits a wide range of water bodies, including garden ponds, ditches, streams and rivers (3).

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Common pond skater status

The common pond skater is common and widespread (3).

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Common pond skater threats

The common pond skater is not threatened at present.

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Common pond skater conservation

No conservation action has been targeted at the common pond skater.

There may be further information about this species available via the National Biodiversity Network Gateway.
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Find out more

For more on invertebrates and their conservation see Buglife, the Invertebrate Conservation Trust at:
http://www.buglife.org.uk/

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Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
arkive@wildscreen.org.uk

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Glossary

Incomplete metamorphosis
Type of insect development (also known as hemimetabolous development) in which the adult form is reached via a series of moults. The larva (nymph) resembles a miniature wingless adult; the wings develop externally as the nymph grows.
Larvae
Stage in an animal's lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
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References

  1. National Biodiversity Network Species Dictionary (Jan 2003):
    http://www.nhm.ac.uk/nbn/
  2. Olsen, L., Sunesen, J. & Pedersen, B. V. (1999) Small freshwater creatures. Oxford University Press, Oxford.
  3. Southwood, T. R. E. & Leston, D. (1959) Land and water bugs of the British Isles. Frederick Warne & Co. Ltd., London.
  4. Macan, T. T. (1959) A guide to freshwater invertebrate animals. Longmans, Green & Co. Ltd., London.
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Image credit

Common pond skater walking on water  
Common pond skater walking on water

© Heather Angel / naturalvisions.co.uk

Natural Visions
6 Vicarage Hill
Farnham
Surrey
GU9 8HJ
United Kingdom
Tel: +44 (0) 1252 716 700
Fax: +44 (0) 1252 727 464
info@naturalvisions.co.uk
http://www.naturalvisions.co.uk/

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