Maechidius interruptocarinulatus Heller, 1914

Prokofiev, Artem M., 2022, New species and records of Maechidius Macleay, 1819 from New Guinea (Coleoptera: Scarabaeidae: Melolonthinae), Zootaxa 5205 (5), pp. 445-462 : 453-454

Maechidius interruptocarinulatus Heller, 1914

Fig. 6

Additional material examined. 1 male ( Fig. 6A ): Cyclopengebg. / Lager I 800m 8-9.28 / E. Mayr S.G. ( ZMHB) ; 2 males: D. N. Guinea / Kaiserin Augustaflüss-Expedition / Bürgers S.G. ( ZMHB) ; 1 female: D. N. Guinea 98 / Kais. Augustafl Exp. VII.12 / Bürgers S.G. ( ZMHB) .

Description of the males. Total body length 7.5–8.0 mm, greatest width 3.7–4.2 mm. Same characters as described for females by Telnov (2020: 58) with the following additions. Antennal club slightly longer than in female. Anterolateral angles of labroclypeus long and pointed, strongly protruding and distinctly reflexed, anterior margin of clypeus between them regularly concave. Lateral margins of pronotum from broadly and regularly rounded to slightly more sinuous posteriad. Intervening spaces between pronotal punctures very narrow and ridgelike, somewhat variable in arrangement, giving an allusion of fingerprints or of more regular longitudinally arranged ridges. Teeth on protibia narrower and more conspicuously inclined laterad than in female. Protibial spur hooked at tip ( Fig. 6B ). Tarsal claws with pulvilli. Aedeagus and spiculum gastrale, as on Figs. 6C–F ; distal tips of parameres spatulate, curved at right angle.

Remarks. The additional specimens show no valuable differences from the female holotype of that species from the Etna Bay (Naturhistorische Sammlungen Dresden, examined). This species is widely distributed throughout the western part of New Guinea and Waigeo Island and was already reported for the Cyclops Mountains by Telnov (2020).

Figures

FIGURE 6. Male of Maechidius interruptocarinulatus Heller, 1914 (A) dorsal view; (B) protibia; (C) aedeagus, lateral view; (D) parameres, dorsal view; (E) spiculum gastrale, dorsal view; (F) ditto, lateral view. Scale bars: (A, B) 1.0 mm; (C–F) 0.5 mm.