Horelophus walkeri rediscovered: adult morphology and notes on biology (Coleoptera: Hydrophilidae)
Fikáček Martin, Leschen Richard A. B., Newton Alfred F., Gunter Nicole
Acta Entomologica Musei Nationalis Pragae 52(1): 129-146, 2012
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Abstract: Horelophus walkeri Orchymont, 1913, the single representative of the enigmatic
hydrophilid subfamily Horelophinae, is redescribed and illustrated based on
recently collected specimens and its external morphology is briefly compared
with other groups of Hydrophilidae. The species is hygropetric, inhabiting the
spray zone and still waters along streams and waterfalls; its habitat
preferences are discussed based on direct observation. A list of known
specimens of H. walkeri is presented and its distribution is summarized.
Key words: Hydrophilidae, Horelophinae, Horelophus, endemics, morphology, biology, New Zealand