Dorcus rectus

{{short description|Species of beetle}} {{speciesbox | image = Dorcus rectus.jpg | image_caption = | taxon = Dorcus rectus | authority = (Motschulsky, 1857) }} thumb|(a) Male mandibles with two pairs of teeth (arrows). (b) Male mandibles with one pair of teeth (arrows). (c) Male mandibles with no teeth. (d) Female mandibles with one pair of teeth (arrows).<ref name=mmt/>

'''''Dorcus rectus''''', the '''little stag beetle''', is a species of beetles in the family Lucanidae. It can be found in China(Liaoning), Korea, Japan, Russia.<ref>[https://www.catalogueoflife.org/annual-checklist/2019/details/species/id/bdb1bd7d8053fbf6942e79f2980bb1d2 Catalogue of Life: 2019 Annual Checklist]</ref><ref name=phylogenetic>{{cite journal |last1=Matsuoka |first1=Norimasa |last2=Hosoya |first2=Tadatsugu |last3=Hamaya |first3=Tsuyoshi |last4=Abe |first4=Azuma |title=Phylogenetic Relationships Among Four Species of Stag Beetles (Coleoptera: Lucanidae) Based on Allozymes |journal=Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology |date=February 1998 |volume=119 |issue=2 |page=401 |doi=10.1016/S0305-0491(97)00366-0 |url=https://www.sciencedirect.com/science/article/abs/pii/S0305049197003660 |access-date=31 December 2021|url-access=subscription }}</ref> These beetles have a distinctive red shell that separates them from ''Dorcus curvidens''. Males of this species have been observed to have mandible trimorphism,<ref name=mmt>{{cite journal |last1=Iguchi |first1=Yutaka |title=Male mandible trimorphism in the stag beetle ''Dorcus rectus'' (Coleoptera: Lucanidae) |journal=European Journal of Entomology |date=2013 |volume=110 |issue=1 |pages=159–163 |doi=10.14411/eje.2013.022|doi-access=free }}</ref> a characteristic that has only been described in two species of Lucanidae—with the other one being Odontolabis cuvera—"and a small number of other invertebrates" as of 2017.<ref name =SR>{{cite journal |last1=Matsumoto |first1=Keita |last2=Knell |first2=Robert |title=Diverse and complex male polymorphisms in Odontolabis stag beetles (Coleoptera: Lucanidae) |journal=Scientific Reports |date=December 1, 2017 |volume=7 |issue=1 |page=16733 |doi=10.1038/s41598-017-17115-5 |pmid=29196728 |pmc=5711891 |bibcode=2017NatSR...716733M }}</ref> The mandibles are used by males as weapons.<ref name=SR/>

== References == {{reflist}}

Category:Lucaninae Category:Beetles of Asia Category:Beetles of Japan Category:Taxa named by Victor Motschulsky Category:Beetles described in 1857