Apterocyclus munroi Sharp, 1908

Paulsen, M. J. & Hawks, David C., 2014, A review of the primary types of the Hawaiian stag beetle genus Apterocyclus Waterhouse (Coleoptera, Lucanidae, Lucaninae), with the description of a new species, ZooKeys 433, pp. 77-88 : 81

Taxon classification Animalia Coleoptera Lucanidae

Apterocyclus munroi Sharp, 1908 Figs 5-6, 14, 19

Apterocyclus munroi Sharp in Sharp and Scott 1908: 403, revised status. Type material: Lectotype male of A. munroi (NHM) labeled: a) handwritten, on cork "Type D.S. / Apterocyclus munroi / Kaula, Kauai. VII.1897 / G.C. Munro; b) red-bordered circular label "Type / H.T."; c) "Sharp Coll. / 1905:313"; c) red paper, "Apterocyclus / munroi ♂ /Sharp, 1908 / LECTOTYPE / des. M.J. Paulsen"; g) "Apterocyclus / munroi / Sharp, 1908 / det. M.J. Paulsen 2012". Paralectotype male (NHM) labeled: a) handwritten, on cork "Apterocyclus / munroi / 2nd Typ. D.S."; b) "Sharp Coll. / 1905-313"; c) "BMNH(E) / #606199"; c) yellow paper, "Apterocyclus / munroi m /Sharp, 1908 / PARALECTOTYPE / des. M.J. Paulsen"; d) "Apterocyclus / munroi / Sharp, 1908 / det. M.J. Paulsen 2012". Paralectotype male (NHM) labeled: a) handwritten, on cork "A. munroi 3rd Typ. D.S."/ Kaula, Kauai VII’ 97 / Munro; b) "Sharp Coll. / 1905-313"; c) "BMNH(E) / #606198"; c-d) as above.

Apterocyclus adpropinquans Sharp in Sharp and Scott 1908: 404, syn. n. Type material: Holotype male of A. adpropinquans (NHM) labeled: a) handwritten, on cork "A. Adpropinquans typ. / D.S. / Makaweli Kauai / Perkins"; b) "[260] Makaweli / Kauai [2-3000] ft. / Perkins VI-1894."; c) "Sandwich Is. / 1912-215"; d) red-bordered circular label “Type”; d) red paper, "Apterocyclus / adpropinquans ♂ /Sharp, 1908 / HOLOTYPE / des. M.J. Paulsen"; e) "Apterocyclus / munroi / Sharp, 1908 / det. M.J. Paulsen 2012".

Diagnosis.

Mizunuma (2000) indicated that he considered the synonymy with Apterocyclus honoluluensis to be incorrect based on the dentate protibiae that are more similar to those of Apterocyclus waterhousei , and that the species might be distinct. We agree with this hypothesis. The protibiae of Apterocyclus munroi are externally toothed giving a unique bidentate appearance to the apex (Fig. 5), but the basal two-thirds of the external margin varies from weakly serrate to more or less entire (as in the holotype of Apterocyclus adpropinquans , Fig. 6). The protibiae of Apterocyclus waterhousei are much wider throughout their length. The scattered long setae on the elytra, especially near the apex, and projected, apically expanded clypeus will readily distinguish Apterocyclus munroi from the remaining species.

Distribution.

Sharp ( 1908) described Apterocyclus munroi from specimens collected "above Kaula" in 1897, but the identity of this locality is not clear. The holotype of the synonym Apterocyclus adpropinquans is reported to be from Makaweli at 2-3000'. No recent specimens with more complete locality data have been studied.

Remarks.

Sharp ( 1908) described Apterocyclus munroi from four specimens, although only three are now present in the NHM. The specimen later labeled as the type is here designated as the lectotype. No female specimens have been examined. This and the other names proposed by Sharp ( 1908) in the Fauna Hawaiiensis are attributable to him alone. Although the publication lists D. Sharp and Hugh Scott as the authors of the Coleoptera section, the text for which Scott is responsible is clearly indicated by a superscript (e.g. Discolomidae (sic), p. 431) or is followed by his initials (p. 459). Thus the species have been indicated as being authored by Sharp in Sharp and Scott 1908.