Insects of the order Trichoptera (caddisflies) are represented in Baltic amber by 22 families and comprise about 2% of all inclusions (Wichard & Weitschat 1996). Among these, the genus Rhyacophila (Rhyacophilidae) is a rare taxon presented with six so far known fossil species (Rhyacophila kutscheri Mey, 1988; R. laminata Ulmer, 1912; R. liedtkei Wichard & Caspers, 1991; R. occulta Hagen, 1856; ...

Abstract By studying substrate (choriotope) preferences of 25 caddisfly taxa in the Schreierbach stream, a calcareous, first order tributary Ybbs river (Lower Austria), we aimed on (1) detecting microhabitat space and time, (2) to relate this information with ontogenetic choriotope shifts, (3) explore relationships between feeding guilds choriotopes chosen. For this, took six sets bi-monthly mu...

In an earlier study, exploitative intraspecific competition was demonstrated for middle instars of the caddisfly Helicopsyche borealis in Big Sulphur Creek, a stream in northern coastal California. This population is univoltine with early instars first appearing in June, growing into late instars the following spring, and emerging as adults in May. Competition occurs during the summer dry seaso...

The genus Contulma Flint (Trichoptera: Anomalopsychidae) is composed mostly of regionally endemic species occurring above 2,000 m, with a few more widespread species and some that are found at lower elevations. Adults of three new species of Contulma are described and illustrated from the Andes of Ecuador, Contulma lina, new species, Contulma quito, new species, and Contulma sangay, new species...

Wormaldia McLachlan 1865 is the 2nd largest genus in the family Philopotamidae (Trichoptera) after Chimarra Stephens 1829 and is diverse and widely distributed, with ca. 175 extant species in all biogeographic regions except the Australasian. In this monograph, 14 previously described species are recognized for the Neotropical region: W. alicia Bueno-Soria, Santiago-Fragoso, & Barba-Alvarez 200...

Abstract The aim of this review is to summarize the literature knowledge about how abiotic environmental factors and biotic interactions affect sequentially overlapping longitudinal distribution Central European species net-spinning freshwater caddisfly larvae genus Hydropsyche (Trichoptera: Hydropsychidae). In relation, several physical chemical parameters water are discussed, as well differen...

Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract Two branches forming the headwaters of a stream in the Czech Republic were studied. Both streams have similar catchment characteristics and historical deposition; however one is rain-fed and strongly affected by acid atmospheric deposition...

Animal construction allows organisms to cope with environmental variations but the physiological costs of such behaviour are still poorly understood. The aim of the present study was to measure the physiological cost of construction behaviour through the oxidative balance that is known to affect the ability of organs to function, stimulates senescence processes and ultimately impacts the fitnes...

Benthic macroinvertebrate assemblages, environmental variables, and associated mine density were evaluated during the summer of 2000 at 18 reference and test sites in the Coeur d’Alene and St. Regis River basins, northwestern USA as part of the US Geological Survey’s National WaterQuality Assessment Program. Concentrations of Cd, Pb, and Zn in water and (or) streambed sediment at test sites in ...