Graphoderus perplexus

Sharp, 1882

predacious diving beetle

Graphoderus perplexus is a predaceous diving beetle in the Dytiscidae, described by Sharp in 1882. It is distributed across the Holarctic region, occurring in both North America and the Palearctic. Like other members of its , it is an aquatic inhabiting freshwater environments. The is part of the tribe Aciliini, which includes other medium to large diving beetles.

Graphoderus perplexus by (c) Matthew Pintar, some rights reserved (CC BY), uploaded by Matthew Pintar. Used under a CC-BY license.

Graphoderus perplexus by (c) Cricket Raspet, some rights reserved (CC BY), uploaded by Cricket Raspet. Used under a CC-BY license.

Graphoderus perplexus by (c) Owen Strickland, some rights reserved (CC BY), uploaded by Owen Strickland. Used under a CC-BY license.

Pronunciation

How to pronounce Graphoderus perplexus: /græˈfɒdərəs pərˈplɛksəs/

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Habitat

Freshwater aquatic environments including ponds, lakes, and slow-moving waters. As a member of Dytiscidae, it requires permanent or semi-permanent water bodies for all life stages.

Distribution

Holarctic distribution: present in North America and the Palearctic region (Europe and Northern Asia excluding China).

More Details

Taxonomic note

The specific epithet 'perplexus' is shared with several other organisms including a (Gnathamitermes perplexus) and multiple species, but these are unrelated . The name refers to the species described by Sharp in 1882.

Data availability

As of current sources, iNaturalist records 65 observations of this , indicating it is documented but not commonly encountered by citizen scientists.