Acilius

Pronunciation

How to pronounce Acilius: /əˈsɪliəs/

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Summary

Acilius is a genus of diving beetles in the family Dytiscidae. It includes 7 species in the studied area and a total of 13 species globally. Acilius beetles are typically associated with aquatic habitats and exhibit specific patterns for their lifecycle tied to seasonal changes.

Physical Characteristics

Adults measure 10‒16 mm; larvae measure 15‒30 mm. Can be identified by mottled or speckled elytra, and dark transverse bands on the pronotum located apically.

Habitat

Found in permanent aquatic environments, particularly around submergent vegetation.

Distribution

Holarctic, widespread including the Arctic regions.

Life Cycle

Adults overwinter in permanent water bodies and migrate to breeding sites during spring. Larvae develop in the spring and early summer, with newly emerged adults dispersing to overwintering sites later in summer or fall.

Similar Taxa

• Graphoderus

Tags

• Acilius
• diving beetles
• aquatic insects