Maechidius pedarioides , Arrow 1941
Creators: name: Telnov, Dmitry
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Maechidius
Maechidius pedarioides

description: Maechidius pedarioides Arrow, 1941
Figs 72, 163–164, 244, 334, 407, 507–508, 556, 688–690
Type material
Syntypes
INDONESIA • ♂; “ SYNTYPE [p, label circular, blue frame] // Type [p, label circular, red frame] // ♂ [p] // N. DUTCH NEW GUINEA: Waigeu. Camp Nok. 2,500 ft. iv.1938. L.E.Cheesman. B.M.1938- 593. [p]// Maechidius pedarioides, Arrow type [h]”; BMNH • 1 ♂; “ SYNTYPE [p, label circular, blue frame] // N. DUTCH NEW GUINEA: Waigeu. Camp Nok. 2,500 ft. iv.1938. L.E.Cheesman. B.M.1938- 593. [p] // pedarioides? var. [h]”; BMNH • 1 ♀; “ SYNTYPE [p, label circular, blue frame] // N. DUTCH NEW GUINEA: Waigeu. Camp Nok. 2,500 ft. iv.1938. L.E.Cheesman. B.M.1938-593. [p] // Maechidius pedarioides, co-type Arrow [h]”; BMNH • 1 ♀; “ SYNTYPE [p, label circular, blue frame] // ♀ [p] // N. DUTCH NEW GUINEA: Waigeu. Camp Nok. 2,500 ft. iv.1938. L.E.Cheesman. B.M.1938-593. [p]”; BMNH.
Description
Male labroclypeus (Fig. 164) broadly emarginate on anterior margin, female labroclypeus shallowly emarginate. Male anterolateral angles of labroclypeus rounded, strongly protruding, female one broadly obtuse, not protruding (Fig. 164). Lateral margin of labroclypeus sinuous in both dorsal and lateral views. Punctures of frons circular to ovoid, variably large, shallow, those on vertex annular. Long suberect seta rises from anterior margin of each puncture. Pronotum broadly emarginate on anterior margin, anterolateral angles protruding. Basal margin of pronotum broadly rounded. Lateral margin of pronotum in dorsal view broadly rounded, all along with large deep punctures splitting margin into indistinct long and flat crenulae (Fig. 244). Long erect seta present in each puncture between two crenulae. Hypomeron separated from prosternum by low arched carina, with long setae on anterolateral margin opposite to compound eye. Antennal pocket shallow. Pronotal punctures large, shallow, ovoid, those along lateral sides annular. Intervening spaces glossy, smaller to much smaller than punctures. Pronotal punctures in part with inner margin with delicate membrane covered with microscopical velvety pubescence. Pronotal setae minute, seta rises from anterior margin of each puncture, not surpassing its midlength. Elytral punctures circular to ovoid, in part annular, shallow, arranged in double longitudinal rows (Fig. 334). Intervening spaces glossy, generally larger than punctures. Elytral setae minute, surface looks glabrous under 50 × magnification; minute seta rises from anterior margin of each puncture, not surpassing midlength of corresponding puncture. Male pygidium flattened dorsally, with large shallow annular punctures. Intervening spaces variably large, generally smaller than punctures. Setae of pygidium sparse, long, suberect. Male and female protibia widened distally, with three distal teeth on external margin (Fig. 407). Male terminal spur of protibia short. Spiculum gastrale as in Fig. 556. Aedeagus as in Figs 688–690.
Sexual dimorphism
Female lamellae of antennal club considerably shorter; terminal spur of protibia distinctly longer.
description: Published as part of Telnov, Dmitry, 2020, A revision of the Maechidiini Burmeister, 1855 (Coleoptera: Scarabaeidae: Melolonthinae) from the Indo-Australian transition zone, and the first record of the tribe west of Wallace's Line, pp. 1-210 in European Journal of Taxonomy 721 on pages 95-96, DOI: 10.5852/ejt.2020.721.1127, http://zenodo.org/record/4122118