Aulonochares novoairensis, Girón & Short, 2019

Giron, Jennifer C. & Short, Andrew Edward Z., 2019, Three additional new genera of acidocerine water scavenger beetles from the Guiana and Brazilian Shield regions of South America (Coleoptera, Hydrophilidae, Acidocerinae), ZooKeys 855, pp. 109-154 : 117

Aulonochares novoairensis sp. nov. Figs 1 D–F , 2F, G , 3

Type material.

Holotype (♂): "BRAZIL: Amazonas: Novo Airão; 2°41'2.2878"S, 60°56'18.24"W; 60 m; detrital pools in forest along sides of blackwater creek; 9.vi.2017; leg. Benetti; BR17-0609-04B" (INPA). Paratype (1): Same data as holotype (SEMC, DNA voucher specimen SLE 1268).

Differential diagnosis.

Aulonochares novoairensis can be distinguished by its yellowish brown general coloration (Fig. 1 D–F ), and the shape of the aedeagus, which is widened at 2/3, with cylindrical median lobe (Fig. 2G ).

Description.

Body length 6.3-6.9 mm, width 3.4-3.6 mm. General coloration yellowish brown (Fig. 1 D–F ). Aedeagus (Fig. 2G ) with outer margins of parameres sinuate, widest along 2/3; median lobe cylindrical, somewhat acute at apex.

Etymology.

Named after Novo Airão municipality in the state of Amazonas in Brazil.

Distribution.

Currently only known from a single locality in the central Amazon near Manaus (Fig. 3 ).

Remarks.

The single collection of this species was from densely forested, shallow detrital pools immediately adjacent to a blackwater stream.

Figures

Figure 1. Habitus of Aulonochares spp.: A-C Aulonochares tubulus: A dorsal view B lateral view C ventral view. D-F Aulonochares novoairensis: D dorsal view E lateral view F ventral view. G-I Aulonochares lingulatus: G dorsal view H lateral view I ventral view. Scale bars: 5 mm.

Figure 2. Head and internal structures of Aulonochares spp.: A-E Aulonochares tubulus: A head, dorsal view B ventral view of mesoventrite with simply convex posterior elevation C posterior view of metafurca D fifth abdominal ventrite E aedeagus. F, G Aulonochares novoairensis: F head, dorsal view G aedeagus. H, I Aulonochares lingulatus: H head, dorsal view I aedeagus. Scale bars: 0.5 mm.

Figure 3. Distribution of Aulonochares spp.