1 - 8 of 8 articles
The identification of stonefly (Plecoptera) species is often necessary in ecological studies and environmental assessments. Formal descriptions of many species are only available for adult males, making the identification of adult females problematic or impossible. We used morphometric analysis...
The adult female of Chaetocladius insolitus Caspers, 1987 (Diptera, Chironomidae) is described and discussed in the context of the generic diagnosis of adult females of the genus Chaetocladius Kieffer, 1911. In addition, distributional notes on this rare chironomid species are included.
The larva of Rhyacophila loxias Schmid, 1970 is re-described. The diagnostic features of the species are listed and illustrated, and some information on the ecology and distribution of R. loxias is included.
The water mite Hydrachna guanajuatensis Cook, 1980 is recorded as an ectoparasite of Ranatra sp. (Nepidae), Notonecta sp., Buenoa sp. (Notonectidae), Krizousacorixa femorata (Guérin, 1857), Trichocorixella mexicana (Hungerford, 1927), and Hesperocorixa laevigata (Uhler, 1893) (Corixidae). The...
Diamesa mendotae Muttkowski, 1915 is a winter-active species common in groundwater-buffered streams of Minnesota and Wisconsin. This species is capable of surviving under snow cover for at least 28 days. Field collections of adult D. mendotae were used to determine survivorship under long-term...
This study assessed the feeding preference of larvae of Triplectides sp. (Trichoptera, Leptoceridae) exposed to leaves of native (Hoffmannia dusenii Standley, 1931) and exotic (Eucalyptus globulus Labillardiere, 1799) trees. We hypothesized that, regardless of the origin of the leaves, larval...
Relationships between weight (W; dry weight) and length (L; head capsule width or total body length) were examined in 25 freshwater macro-invertebrates at species level and four at order level using the formula W = aLb. Our estimates at the order level dropped into the range of those in North...
In order to improve the limited database on species inventories and ecology of Culicidae in Austria, we monitored hydrological and physico-chemical parameters of breeding habitats of the Culicidae species of Danubean wetlands from March to October 2011 in the National Park Donau-Auen (Lower...
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