duliticola

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Genus Duliticola (Trilobite Beetles)

Duliticola is a genus of beetles found in the rainforests of Southeast Asia and India. Their name obviously comes from their similar appearance to trilobites (although I don’t see it), on the other hand their scientific name is named after Mount Dulit in Borneo. Like their Trilobite ancestors they have flat scales with larger scales on their head. The development of these beetles is unique as females stay in their larval form their entire lives, but are still bigger than the males who are alot smaller and look more like true beetles.

Phylogeny

Animalia-Arthropoda-Insecta-Coleoptera-Polyphaga-Elateriformia-Elateroidea-Lycidae-Duliticola

Image Source(s)

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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 me - Tioman Island, Malaysia.

Trilobite beetle (Duliticola sp.) 
Macro photography by Paul Bertner on Flickr.

Photo taken in Mt. Kinabalu national park, Borneo.
Posted January 27, 2014
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Duliticola: a genus of south and southeast Asian beetles belonging to the family Lycidae.  Females are 40–80 mm in length and remain in the larval form for their entire lives. The males have a beetle-like appearance, but are much smaller, 8–9 mm. The female is an example of paedomorphosis (retention of juvenile traits in the adult stage).

40 second video that gives a perspective you won’t get from the photo …

Animalia → Arthropoda → Hexapoda → Insecta → Coleoptera → 
    Polyphaga → Elateriformia → Elateroidea → Lycidae

Duliticola is a genus of beetles of the family Lycidae. It is named after Mount Dulit in Borneo. The females stay in the larval form and are about 40–80 mm in length. They have a flat dark body with large scales over the head, resembling trilobites. Hence the informal names “Trilobite beetle”, “Trilobite larva” or “Sumatran Trilobite larva”. The males are much smaller, 8–9 mm, with a beetle like appearance. Most are found in tropical rainforests, notably in India and South-east Asia. (Wiki.)

Female Trilobite Beetle.

This photo was taken in May 2011 in Gunung Kinabalu National Park at the Island of Borneo (east of Sabah’s capital city Kota Kinabalu), where this female Trilobite Beetle, which stays her full life in the larval form, showed herself after heavy rain fall.

This beetle have a flat dark body with large scales over the head, resembling trilobites, hence the informal names “Trilobite beetle”. The official scientific name is “Duliticola”.

Trilobite Beetles || Duliticola hoisen || This species is found in the tropical rainforests of South East Asia. They are listed as an endangered species, some believe this is because they live only in pristine forested areas and possibly because beetle enthusiasts take them them out of their natural environment. Because they are a rare insect few studies have been conducted detailing their life cycles, eating and breeding habits. || Project Noah Photo Credit: GC Gan

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