Nicagus japonicus Nagel

Paulsen, M. J. & Smith, Aaron D., 2005, A new species of stag beetle from sand dunes in west Texas, and a synopsis of the genus Nicagus (Coleoptera: Lucanidae: Aesalinae: Nicagini), Zootaxa 1050, pp. 45-60 : 56-57

publication ID

https://doi.org/ 10.5281/zenodo.169967

DOI

https://doi.org/10.5281/zenodo.6266078

persistent identifier

https://treatment.plazi.org/id/88494F6B-FFB4-002C-FEF3-FA631BA3FD87

treatment provided by

Plazi

scientific name

Nicagus japonicus Nagel
status

 

Nicagus japonicus Nagel View in CoL ( Fig. 4 View FIGURE 4 c)

Nicagus japonicus Nagel, 1928: 260 View in CoL .

Diagnosis. This species differs from both Nearctic species in possessing an evenly rounded lateral margin of the pronotum (not angulate as in the Nearctic species) with stronger, tooth­like crenulations. In addition, N. japonicus has the anterior margin of the clypeus subtriangular and not rounded, and the claws are relatively short and subequal in length to tarsomeres 3–4 together. Males have a bidentate protibial apex ( Fig. 4 View FIGURE 4 c), rather than an apex with a single large tooth, and the inner margin of the metatibia is convex in dorsal view. Also in males, the first antennal club segment is not simply cylindrical, and instead is bulbous medially and narrows abruptly to the apex. The median lobe of the male genitalia lacks the ventral concavity present in the Nearctic species and the parameres are less strongly curved, appearing almost straight in dorsal view.

Distribution. Fifteen specimens examined (11 male, 4 female).

JAPAN: AKITA: Mose­Hachimantai (CMNC). HOKKAIDO: Mena River north of Hakodate (FMNH). NIIGATA: Nakauonuma: Kawanishi (MJPC). A distributional map in Tabana & Okuda (1992) includes localities on the islands of Hokkaido and Honshu in the following prefectures: AKITA, FUKUI, FUKUSHIMA, GIFU, HOKKAIDO, HYOGO, KYOTO, MIE, NARA, NIIGATA, TOYAMA.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Lucanidae

Genus

Nicagus

Loc

Nicagus japonicus Nagel

Paulsen, M. J. & Smith, Aaron D. 2005
2005
Loc

Nicagus japonicus

Nagel 1928: 260
1928
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