Journal
COLEOPTERISTS BULLETIN
Volume 76, Issue 1, Pages 115-121Publisher
COLEOPTERISTS SOC
DOI: 10.1649/0010-065X-76.1.115
Keywords
aquatic insects; diving beetles; taxonomy; Hydroporinae; Hydrovatini
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The new species Hydrovatus onigiri is described from Japan, similar to Hydrovatus subtilis but distinguishable by male antennomeres 4-6 being the broadest, poorly developed male stridulatory apparatus, and an almost evenly curved penis apex. It is the 20th species of the H. confertus species group, and the 10th Hydrovatus Motschulsky species known from Japan.
Hydrovatus onigiri Watanabe and Bistrom, new species is described from Japan. The new species is similar to Hydrovatus subtilis Sharp. 1882, but it is distinguishable from the latter by male antennomeres 4-6 being the broadest (rather than anten-nomeres 6-8), poorly developed male stridulatory apparatus, and an almost evenly curved penis apex. Hydrovatus onigiri, new species is the 20th species of the H. confertus species group, and 10th Hydrovatus Motschulsky species known from Japan.
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