New species of diving beetles in the subgenus Platynectes s. str. from the Guiana Shield (Coleoptera: Dytiscidae: Agabinae)
Gustafson Grey T., Short Andrew E. Z., Miller Kelly B.
Acta Entomologica Musei Nationalis Pragae 56(1): 79-102, 2016
Abstract: The Neotropical species of Platynectes Régimbart, 1879 sensu stricto
(Coleoptera: Dytiscidae: Agabinae: Platynectini) are arranged into three newly
proposed species groups based on the coloration of the venter: the P.
submaculatus species group, the P. agallithoplotes species group, and the P.
nigerrimus species group. The species of the P. submaculatus group and P.
agallithoplotes group are treated in detail including the description of five
new species: P. agallithoplotes sp. nov. (Venezuela), P. elaskanaima sp. nov.
(Venezuela), P. garciai sp. nov. (Venezuela, Guyana), P. meru sp. nov.
(Venezuela) and P. tafelbergensis sp. nov. (Suriname). The lectotype is
designated for Agabus decemnotatus Aubé, 1838, and the species is, together
with Platynectes submaculatus (Laporte, 1835) redescribed based on the recently
collected material. For each species of the P. agallithoplotes group and P.
submaculatus group a dorsal habitus, illustration of the median lobe of the
aedeagus, distribution maps, and habitat photos are figured. Keys to the species
groups and species of the P. submaculatus group are included. A checklist to
the species of Neotropical Platynectes sensu stricto is provided.
Key words: Coleoptera, Dytiscidae, aquatic beetle, new species, description, taxonomy, French Guiana, Suriname, Venezuela, Neotropical Region