Species profile: Tinodes dives

January 18, 2017

Tinodes dives (Pictet, 1834)

Tinodes dives is one of nine members of the Family Psychomyiidae found in Ireland, and one of five members of the genus Tinodes. It is a species whose larvae can be found in headwater streams, on a substratum of gravel to bedrock, building galleries on rock surfaces in moderate to fast-flowing waters. The species shows a preference for alkaline water.

In temperate areas, Tinodes dives has a univoltine (one generation per year) reproductive cycle, and lives for up to one year. In terms of feeding ecology, the larvae are predominantly grazers, with some gathering and passive filter feeding.

Defining features of the larvae of Tinodes dives include a lack of abdominal gills, labrum comprising a sclerotized plate, lateral plates on the 2nd and 3rd thoracic segments small, anal prolegs with almost no basal membranous section, pronotum lacking a black thickening towards the posterior-lateral corner, anterior section of 1st leg coxopleurite with two vertical black bars, pronotum lacking ovoid yellow markings, labrum almost uniformly dark, and coxopleurites of 2nd and 3rd legs heavily pigmented.

Adults of Tinodes dives have only been found on the wing in July in Ireland, while in Britain the flight period is described as May to August.

For details of records of Tinodes dives, visit the National Biodiversity Data Centre page here.

Tinodes dives


Barnard, P. and Ross, E. (2012) The Adult Trichoptera (Caddisflies) of Britain and Ireland. RES Handbook Volume 1, Part 17.

Edington, J.M. and Hildrew, A.G. (1995) A Revised Key to the Caseless Caddis Larvae of the British Isles: with notes on their ecology. Freshwater Biological Association Special Publication No. 53.

Graf, W., Murphy, J., Dahl, J., Zamora-Muñoz, C. and López-Rodríguez, M.J. (2008) Distribution and Ecological Preferences of European Freshwater Species. Volume 1: Trichoptera. Astrid Schmidt-Kloiber & Daniel Hering (eds). Pensoft, Sofia-Moscow.

O’Connor, J.P. (2015) A Catalogue and Atlas of the Caddisflies (Trichoptera) of Ireland. Occasional Publication of the Irish Biogeographical Society, No. 11.

Last updated: 08/04/2018


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