✨ 🪲 WATERBUG WEDNESDAY! 🪲 ✨
Today’s water bugs under the spotlight are Hydrochid beetles (cue the song “Shiny” from Disney’s “Moana” ✨ 🦀 ✨ ).
The shiny beetles you see here are from the genus 𝘏𝘺𝘥𝘳𝘰𝘤𝘩𝘶𝘴, which is the only living genus in the family Hydrochidae. The Australian Hydrochidae are currently comprised of 27 different species.
These glittery 🌌 fellows can be identified by their shiny and well-indented elytra (wing case) as well as the fact that their pronotum (segment behind the head) is always narrower than their elytra. Hydrochid antennae end with a three-segmented club, which are often tucked away under their heads so that only their longer maxillary palps are visible, and thus the palps are commonly confused for antennae.
Despite their glamourous appearance, 𝘏𝘺𝘥𝘳𝘰𝘤𝘩𝘶𝘴 species prefer to live in less than glamorous conditions: 💧 stagnant or slowly moving waters, such as ponds, billabongs and riverbanks, where they can be found eating plants 🌿, detritus and periphyton (in addition to just being shiny little gems 💎).
Fun Fact: Hydrochid adults can’t actually swim! 🚫 🏊♂️ 🚫 Instead, they crawl everywhere such as along logs and plants in the water. They also breathe air and so keep an air bubble tucked under their elytra and abdomen.
Gooderham, J., & Tsyrlin, E. (2002). The Waterbug book: a guide to the freshwater macroinvertebrates of temperate Australia. CSIRO publishing.
Watts, C.H.S. (1999). Revision of Australian 𝘏𝘺𝘥𝘳𝘰𝘤𝘩𝘶𝘴 (Coleoptera: Hydrochidae). Records of the South Australian Museum, 32(1), 1-43.
#thinklaterally #waterbugwednesday #waterbug #aquatic #ecology #beetle #shiny
Professor at Newcastle University
7moWelsh Food Stories by Carwyn Graves