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A new species of water beetle from northwestern Argentina, Macrelmis saltensis sp. n. is described and illustrated from adults of both sexes. It belongs to the granigera species-group to which species it is compared.
Cytological examination of the larvae of the species previously referred to as Chironomus plumosus in Japan, reveals that it is actually a new member of the plumosus group. This species is described as C. suwai on the basis of the karyotype, since this is the most reliable method for recognizing...
We studied the population dynamics of the mayflies Caenis luctuosa (Burmeister) (Caenidae) and Cloeon simile Eaton (Baetidae) in a permanent pond in Southwestern France. Both species had a bivoltine life cycle. After slow and continuous winter growth, the rapid rise in water temperature in March...
Mature larvae and pupae of Metachorema griseum Schmid are described for the first time. The known distribution of the genus includes the province of Neuquén in Argentina and central and southern Chile. The distinctive characters of the larvae of this genus are: (1) prothoracic sternite...
This paper deals with 13 species of the genus Paracymoriza Warren from China. Paracymoriza multispinea You, Wang et Li sp. n. is described as new to science; Paracymoriza fuscalis (Yoshiyasu) is recorded for the first time from this country. A key to the Chinese species is provided.
The larva of the genus Pharceonus is described for the first time from material collected in Costa Rica and Peru. These are the most northern and southern distribution records for this genus, which was previously known from just one species, Pharceonus volcanus Spangler et Santiago-Fragoso 1992,...
A new species of Antarctoecia Ulmer, 1907 (Trichoptera: Limnephilidae) from south-eastern Brazil, Antarctoecia brasiliensis sp. nov., is described and figured based on adult male and female specimens from Mantiqueira mountain range, Minas Gerais State. This is the first record of the family...
Two new species of the genus Arrenurus are described from Turkey, i.e. Arrenurus oezkani and A. anatolicus. In addition, the taxonomic status of Arrenurus cylindratus latigenitalis Lundblad, 1956 is discussed. It is concluded that this taxon deserves ranking as a separate species.
Ptychoptera (Paraptychoptera) delmastroi sp. n. is described from North Italy and compared with other species of the subgenus, including structural details of the auxiliary male sexual organ.
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