Eur. J. Entomol. 93 (2): 239-248, 1996

Symydobius nanae sp n (Sternorrhyncha: Aphidoidea: Aphididae) and other aphids living on Betula nana in the İumava National Park, Czech Republic

HOLMAN J.
N/A

Two host-specific and 3 oligophagous aphid species are recorded from Betula nana L. in southern Bohemia. Symydobius nanae sp. n. (apterous viviparous female, ovipara and male) is described and its intraspecific variation is compared with that of S. oblongus (von Heyden). New morphological data on Calaphis arctica Hille Ris Lambers are presented, which possibly differentiate the Greenland and the Central European populations of this species. A key is given to European Calaphis spp. Occasionally, summer generations of Calaphis flava Mordvilko reproduce on B. nana, whereas it is possible that Calaphis betulicola (Kaltenbach) and Euceraphis punctipennis (Zetterstedt) are vagrants.

Keywords: Aphididae, Symydobius, new species, host plants, Calaphis, key, Betula nana

Accepted: July 31, 1995; Published: August 1, 1996  Show citation

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HOLMAN, J. (1996). Symydobius nanae sp n (Sternorrhyncha: Aphidoidea: Aphididae) and other aphids living on Betula nana in the İumava National Park, Czech Republic. EJE, 93(2), 239-248
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