Biology:Mecodema chaiup

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Short description: Species of beetle

Mecodema chaiup
Mecodema chaiup dorsal view
The only known specimen of M.chaiup, found in 2008.
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Family: Carabidae
Genus: Mecodema
Species:
M. chaiup
Binomial name
Mecodema chaiup
Seldon, 2015

Mecodema chaiup is a large-bodied ground beetle species found in Mohi Bush Scenic Reserve, Hawke's Bay, New Zealand. A single specimen was found beneath a large log in 2008 by D.S. Seldon and C.P. Martin (who it is named after). Since then a number of intensive pitfall trap surveys of Mohi Bush have failed to collect further specimens.

Diagnosis

Mecodema chaiup is distinguished from other North Island Mecodema by:

  1. Narrow elytra (narrower than the pronotum at the widest point)
  2. Distinct asetose punctures in a confused pattern that are irregular in size and shape[1]

Description

Length 31 mm, pronotal width 8.5 mm, elytral width 6.5 mm. Colour of entire body matte black, except for the femur and tibiae which are dark reddish-brown.[2]

Natural History

Flightless and presumably a nocturnal predator of a range of ground invertebrates (e.g., spiders, carabids, worms), as are the other members of the genus.

References

  1. Seldon, David S.; Buckley, Thomas R. (2019). "The genus Mecodema Blanchard 1853 (Coleoptera: Carabidae: Broscini) from the North Island, New Zealand" (in en). Zootaxa 4598 (1): zootaxa.4598.1.1. doi:10.11646/zootaxa.4598.1.1. ISSN 1175-5334. PMID 31716064. https://biotaxa.org/Zootaxa/article/view/zootaxa.4598.1.1. 
  2. Seldon, D.S. (2015). "A unique species of Mecodema (Carabidae: Broscini) from the Hawke's Bay region, New Zealand, with implications for North–South Island zoogeography". New Zealand Entomologist 38 (1): 28–35. doi:10.1080/00779962.2014.936105. 

Wikidata ☰ Q21324246 entry