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The larval stage of the genera Bugilliesia Lugo-Ortiz & McCafferty 1996; Cheleocloeon Wuillot & Gillies, 1993 and Delouardus Lugo-Ortiz & McCafferty, 1999 are remarkably similar. In order to avoid inaccuracy in generic placement, we propose new generic diagnoses with new discriminating...
As selective pressures are altered by the changing climate, species have been shown to shift their distributions. Here we investigate morphological variation in dispersal-related traits between core and marginal populations in three species of Odonata, a taxon that is known to be expanding...
Three new species of Rhagovelia are described from Oporapa Municipality (Huila Department, Colombia): Rhagovelia huila sp.n., Rhagovelia azulita sp.n. and Rhagovelia oporapa sp.n. These new species are compared with other previously described taxa of the genus and are assigned to the armata...
The structure and function of the salivary gland polytene chromosomes of the larvae of the chironomid Chironomus acidophilus in a UK river subject to long-term acid (pH < 3.0) mine drainage (AMD) was examined. Two types of chromosome rearrangements (inherited and somatic) were identified. The...
The aims of this study were to determine which linear body dimensions are best suitable and which mathematical functions can be used to describe length–dry mass relationships for a population of Phylloicus sp. (Trichoptera: Calamoceratidae) larvae. We measured three linear body dimensions (body...
Reports of epibiosis between ciliated protozoans and aquatic true bugs are scarce. The suctorian ciliates Discophrya elongata and Acineta tuberosa are recorded for the first time as epibionts of Corisella edulis (Corixidae) collected at Hidalgo, Mexico. We analyse the relationship between the...
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