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Something New for Insect-Keepers – The Aquatic Sunburst and Green Diving Beetles – Part 2

Diving BeetlePlease see Part I of this article for information on the natural history of the Sunburst or Marbled Diving Beetle (Thermonectes marmoratus), the Green Diving Beetle (Thermonectes sp.) and related insects.  These wonderfully interesting aquatic beetles sometimes appear in the pet trade, and they and related species are also rather easy to collect.  Today we’ll take a look at their captive husbandry.

Habitat

The beetle aquarium should be tightly covered, as all species can and do fly, especially at night.  The tank should be stocked with a variety of live aquatic plants (i.e. Elodea, Anachris, Water Hyacinth) and sticks…despite being strong swimmers, Diving Beetles need to take frequent breaks by clinging to submerged objects; egg deposition occurs on live plants. Read More »

Something New for Insect-keepers – Sunburst and Green Diving Beetles – Part 1

Sunburst Diving BeetleI cannot imagine why aquatic insects have not attracted more interest from invertebrate enthusiasts.  Thousands of species, many of which are large and active by day, may be kept in relatively simple aquariums.  Aquatic insect exhibits that I have established in zoos and museums are invariably very popular with visitors.  From Dragonfly Larvae that flick out extendable “lips” to snare prey to Giant Water Bugs that can tackle small turtles, these other-worldly beings are fascinating to observe, and most are simple to collect.  Today I’d like to cover the natural history of 2 species that are sometimes available in the pet trade, the Sunburst or Marbled Diving Beetle (Thermonectes marmoratus) and Green Diving Beetle (Thermonectes sp.). I’ll discuss their captive care in Part 2. Read More »

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