نتایج جستجو برای: chironomidae

تعداد نتایج: 1269  

Journal: :Revista brasileira de biologia 1999
M M Marques F A Barbosa M Callisto

Patterns of abundance and distribution of chironomid midges (Diptera, Chironomidae) in the middle Rio Doce basin were analysed. Human activities (mining, steel processing, and Eucalyptus spp. forestry) contribute to environmental degradation and low water quality in this watershed. Physical and chemical water traits (dissolved oxygen, pH, total alkalinity, electric conductivity, phosphorus and ...

Journal: :Zootaxa 2015
Nick Drayson Peter S Cranston Matt N Krosch

The Australian species of the Orthocladiinae genus Cricotopus Wulp (Diptera: Chironomidae) are revised for larval, pupal, adult male and female life stages. Eleven species, ten of which are new, are recognised and keyed, namely Cricotopus acornis Drayson & Cranston sp. nov., Cricotopus albitarsis Hergstrom sp. nov., Cricotopus annuliventris (Skuse), Cricotopus brevicornis Drayson & Cranston sp....

2016
Viktor Baranov Jörg Lewandowski Paul Romeijn Gabriel Singer Stefan Krause

Bioirrigation or the transport of fluids into the sediment matrix due to the activities of organisms such as bloodworms (larvae of Diptera, Chironomidae), has substantial impacts on sediment respiration in lakes. However, previous quantifications of bioirrigation impacts of Chironomidae have been limited by technical challenges such as the difficulty to separate faunal and bacterial respiration...

2011
Elena D. Lukashevich Andrey A. Przhiboro

Four new species of Chironomidae with well-developed elongate proboscises are described from a Late Jurassic site Shar Teg in SW Mongolia. These are named Cretaenne rasnicynisp. n., Podonomius blepharissp. n., Podonomius macromastixsp. n., ?Podonomius robustussp. n.

Journal: :Zootaxa 2013
Luiz Carlos Pinho João Francisco Souza

Two new Xestochironomus species, X. dickinsoni sp. n. and X. virgoferreae sp. n., from Brazilian Atlantic Forest are described, based on male adults. Additionally, a key to adult males of the genus is provided.

Journal: :Mycologia 2004
Merlin M White Robert W Lichtwardt

Collections of aquatic insect larvae in Norway, over a 40 d period in May and Aug 2002, resulted in finding more than 25 species and one new genus of Harpellales (Trichomycetes). Nine new fungal symbionts are described and named: Ephemerellomyces aquilonius (a new monotypic genus), Glotzia stenospora and Legeriosimilis europaeus in mayfly nymphs (Ephemeroptera); Genistelloides amplispora and G....

Journal: :Zootaxa 2015
Ruilei Zhang Chao Song Liqing Wang Xinhua Wang

Polypedilum (Tripodura) falcatum sp. n. and P. (T.) procerum sp. n. of the acifer species group of Polypedilum subgenus Tripodura Townes are described and illustrated as male imagines from China. The male adult of P. (T.) falcatum sp. n. is distinguished by the presence of two faint markings on wing; short and interrupted abdominal tergite bands; the sickle-like superior volsella bearing 0-2 ou...

2015
Barbara L. Hayford Andrea M. Caires Sudeep Chandra Scott F. Girdner

Relative to their scarcity, large, deep lakes support a large proportion of the world's freshwater species. This biodiversity is threatened by human development and is in need of conservation. Direct comparison of biodiversity is the basis of biological monitoring for conservation but is difficult to conduct between large, insular ecosystems. The objective of our study was to conduct such a com...

Journal: :Zootaxa 2015
Analía C Paggi Gretel N Rodriguez Garay

Male imagos of Pseudochironomus viridis (Kieffer) are redescribed, the immature stages are described and figured for the first time. During this study, larva and pupal exuviae associated to P. richardsoni (Malloch) were recorded for the first time for South America. The specimens were collected from a stream and a river in the Pampasic Hills System in the Chaco Serrano ecoregion of Argentina.

2012
Veronika V. Golygina I. I. Kiknadze

A revision of the main and alternative banding sequences in chromosome II (CD) has been made for all 14 species of the Chironomus plumosus (Linnaeus, 1758)group. A new version of mapping has been suggested for 10 out of 18 banding sequences of arm C and 12 out of 22 banding sequences of arm D. Mapping of 7 banding sequences has been done for the first time according to the Keyl-Devai system. Ph...

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