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Platerodrilus (Previously Duliticola) is a genus within Lycidae that are commonly referred to as Trilobite Beetles. The common name is derived from the appearance of the females (above), which remain in the larval form during adulthood, a process known as neoteny. 

Trilobite beetles are usually found on the surface of rotting logs in lowland primary forest, where their diet is thought to consist of fungi, rotting plant matter and slime moulds. For such an interesting genus, very little is known about their life cycles and there has been minimal taxonomic work regarding the males of the species, which are illusive.

Photos taken by Connor Butler - Tioman Island, Malaysia.

Chrysochroa fulidissima 

Known as the “tamamushi” in Japanese, Chrysochroa fulidissima is a striking species of metallic woodboring beetle (Buprestidae) which is endemic to Japan. Chrysochroa fulidissima typically occur in woods, forests, and other wooded areas. Like other Buprestids the larvae of C. fulidissima will bore through and feed on decaying wood.  Chrysochroa fulidissima is typically one of the species used in the art of  “beetlewing” work due to its elegant green elytra. 

Classification

Animalia-Arthropoda-Insecta-Coleoptera-Buprestidae-Chrysochroa-C. fulidissima

Image: Brian Adler

“Giant Stag Beetle” (Dorcus titanus)

…a large species of stag beetle (Lucanidae) which inhabits tropical rainforests throughout Indonesia other areas in Southeast Asia. Dorcus titanus individuals can grow quite large with males averaging from 32-111 mm and females averaging 36-54 mm.

Classification

Animalia-Arthropoda-Insecta-Coleoptera-Lucanidae-Dorcus-D. titanus

Image: Shawn Hanrahan 

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7/20/17                                     Dogbane Beetle      

Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Eumolpinae
Tribe Eumolpini
Genus Chrysochus
Species auratus (Dogbane Beetle)
Explanation of Names
Chrysochus auratus (Fabricius 1775)
auratus = ‘golden’
Numbers
8-11 mm
Identification
Oblong shape. Shiny, iridescent.
Range
transcontinental (ME-WA to GA-AZ)(1)
Food
hosts: Apocynaceae, incl. Apocynum cannabinum and Apocynum androsaemifolium; also reported in asso. w/ common milkweed (Asclepias syriaca, Asclepiadaceae) (2)
Life Cycle
They mate and lay eggs through the summer. They lay eggs on leaves and stems of host plants and nearby vegetation in masses of egg capsules
larvae are obligate root feeders; adults eat leaves of larval host