• Main Authors: Andrey A. Przhiboro, Ole A. Sæther
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Arctic; Bear Island; karelia*; Alaska; Siberia
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.504.7289; http://insects.ummz.lsa.umich.edu/~ethanbr/chiro/Books-Bibs/Saetherrefs/235.paratatricus.pdf

Heterotrissocladius subpilosus was described by Kieffer in Kieffer and Lundbeck (1911) as adult male and female from Bear Island in the Norwegian Arctic. The larva of this species was briefly described by Brundin (1949) and in more detail by Sæther (1975). Chernovskii (1949) described Orthocladius paratatricus as larva from “the profundal zone of large oligotrophic lakes; found in Karelia and in Lake Teletskoe in the Altai ” (the USSR). Pankratova (1970) transferred O. paratatricus to Trissocladius and recorded it from the Leningrad Province. Based on Chernovskii’s description, Sæther (1975) consid-ered the species under Zalutschia. Using the keys by Chernovskii (1949) and Pankratova (1970), O. paratatricus has been recorded from many locali-ties (e.g. Zabolotskii 1965; Pankratova 1975; Ryabinkin et al. 2003). However, all these records are from the northern and northwestern European Russia and Siberia, with one possible exception, a doubtful record from Alaska mentioned by Ashe & Cranston (1990). Heterotrissocladius subpilosus is common in oligotrophic lakes in northwestern Europe (Sæther 1975, 1979), and it has also been recorded from France and Romania (Sæther & Spies 2007). However, it has never been recorded from European Russia and was only recently found in the Russian Far East (Makarchenko et al. 2005). We have examined the Chernovskii collection kept in the Zoological Institute, St. Petersburg. It includes the only