Nemotaulius

Banks, 1906

northern caddisfly

Species Guides

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Nemotaulius is a of northern caddisflies in the Limnephilidae, established by Banks in 1906. The genus contains approximately eight described distributed across northern regions of North America, Europe, and Asia. Species within this genus inhabit freshwater environments including ponds and pools. At least one species, Nemotaulius hostilis, has been documented to exhibit distinctive reproductive features including mass liquefaction and the use of for mate attraction.

Nemotaulius hostilis 87625267 by Allan Harris. Used under a CC0 license.Nemotaulius hostilis 62391534 by Susan Blayney. Used under a CC BY 4.0 license.Nemotaulius hostilis 82067659 by Jake McCumber. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Nemotaulius: /nɛmoʊˈtɔːliəs/

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Habitat

Freshwater lentic environments including permanent ponds and pools. Nemotaulius hostilis has been documented in permanent pools with fluctuating water levels.

Distribution

Northern regions including Denmark, Norway, Sweden, the United States (Vermont), with documented in Canada (southern Alberta), Russia (Amur region), Korea, and Japan.

Seasonality

of Nemotaulius hostilis occurs primarily in late May, with over 75% of emergence concentrated in one week. Oviposition occurs in August.

Life Cycle

of Nemotaulius hostilis hatch in approximately 30 days at 4°C. Larvae enter water upon hatching. Larval growth rates in permanent water approximate those of other detritivorous .

Behavior

Females of Nemotaulius hostilis deposit masses on riparian vegetation. undergo a reproductive of slightly over one month duration. (extractable ) have been demonstrated for mate attraction in Nemotaulius hostilis. A notable and unusual phenomenon among Trichoptera is egg mass liquefaction, where the egg mass becomes fluid during embryonic development.

Ecological Role

Larvae function as detritivorous in freshwater .

Similar Taxa

More Details

Egg mass liquefaction

Nemotaulius hostilis exhibits a rare phenomenon among caddisflies where masses liquefy during embryonic development. Each mass contains approximately 200 eggs.

Reproductive diapause

reproductive in Nemotaulius hostilis has been postulated as an to metabolic costs of high water temperatures on cool-adapted limnephilid caddisflies.

Sources and further reading