Maechidius lobaticeps Frey 1969
Creators: name: Telnov, Dmitry
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Maechidius
Maechidius lobaticeps

description: Maechidius lobaticeps Frey, 1969
Figs 54, 139–140, 227, 272, 318, 391, 487, 569, 649–651, 751–753
Type material
Holotype
PAPUA NEW GUINEA • ♂; “ Holotype [p, label circular, red frame] // NEW GUINEA: Madang Dist., Finisterre Mts. Budemu c. 4000 ft. 15-24.x.1964 [p] // M.E. Bacchus. B.M. 1965-120. [p] // Maechidius lobaticeps n. sp. ♂ [h] det. G.Frey,1967/68 [p]”; BMNH.
Paratypes (109 specimens)
PAPUA NEW GUINEA • 1 ♂; “ WEST NEW GUINEA 10km E of Bokondini 40km N of Baliem Val.1300m, 24.XI. ’61 [p]// Light trap S. Quate & L. Quate [p] // geschenkt [h]// PARATYPE [p, red label]// Maechidius lobaticeps n. sp. [h]// det. G.Frey,1968 [p]”; SNSD • 1 ♀; “ Allotype [p, label circular, red frame] // M.E. Bacchus. B.M. 1965-120. [p] // NEW GUINEA: Madang Dist., Finisterre Mts. Budemu c. 4000 ft. 15-24.x.1964 [p] // Maechidius lobaticeps n. sp. ♀ [h] det. G.Frey,1967/68 [p]”; BMNH • 97 specs; “Paratype [p, label circular, yellow frame] // NEW GUINEA: Madang Dist., Finisterre Mts. Budemu c. 4000 ft. 15-24.x.1964 // M.E. Bacchus. B.M. 1965-120. [p] // PARATYPE [p, red label] // Maechidius lobaticeps n. sp. [h] det. G.Frey,1967/68 [p]”; BMNH • 10 specs; “Paratype [p, label circular, yellow frame] // PAPUA: Kokoda. 1,200ft. viii.1933. L.E.Cheesman. B.M.1933-577. [p] // PARATYPE [p, red label]// Maechidius lobaticeps n. sp. [h] det. G.Frey,1967/68 [p]”; BMNH.
New material
PAPUA NEW GUINEA • 1 spec.; “ PAPUA:Kokoda. 1,200ft. viii.1933. L.E.Cheesman. B.M.1933- 577.”; BMNH.
INDONESIA • 1 spec.; “ DUTCH NEW GUINEA: Cyclops Mts. Sabron. Camp 2. 2,000 ft. vi.1936. L.E.Cheesman. B.M.1936-271”; BMNH • 1 spec.; “Sabron. Camp 2. // DUTCH NEW GUINEA: Cyclops Mts., Sabron. 2,000 ft. vi.1936. L.E.Cheesman. B.M.1936-271”; BMNH • 18 specs collected and> 100 observed; “ INDONESIA E, New Guinea, Papua Prov., Sentani 5.5 km W, road to Nimbokrang, Doyo
Lama vill., 02°33’50”S, 140°27’20”E, 150-165 m, 31.III.2018, semidry eucalypt forest, from flowers & pitchers of Nepenthes sp., leg. D.Telnov”; DTC (Figs 751–753 for habitat).
Description
Male labroclypeus (Fig. 139) deeply emarginate, anterolateral angles protruding. Female labroclypeus (Fig. 140) with obtuse and less protruding anterolateral angles. Lateral margins of labroclypeus strongly sinuous in both dorsal and lateral views. Anterolateral angles raised up at angle of nearly 70-80° to frons in lateral view. Anterior and lateral margins of labroclypeus smooth. Upper- and underside of labroclypeus with sparse very long setae along anterior and lateral margins. Canthus broadly rounded in dorsal view. Head dorsal punctures circular, in part annular. Intervening spaces glossy, variably large. Head setae scale-like, elongate; each seta rises from anterior margin of corresponding puncture. Antenna 7-segmented, club 3-lamellate. Anterior margin of pronotum subtruncate with protruding anterolateral angles, basal margin broadly rounded. Lateral margin of pronotum broadly rounded, delicately crenulate all along (Fig. 227). Extraordinarily long erect distally curved seta present between every two crenulae. Lateral margin of pronotum nearly straight in lateral view. Pronotal punctures annular, variable in size. Intervening spaces glossy, variably large. Pronotal setae rather large, suberect, rising from anterior margin of corresponding punctures. Hypomeron separated from prosternum by straight vague carina, with moderately long setae on its anterolateral margin opposite to compound eye (Fig. 272). Antennal pocket shallow. Elytron subopaque, surface delicately wrinkled. Punctures of elytral disc double (Fig. 318). Ordinary punctures of irregular shape, shallow, dense. On background of each ordinary puncture with additional linear (long and narrow), incision-shaped puncture. Intervening spaces glossy, much larger than incisions. Elytral setae of variable length, not surpassing to strongly surpassing length of corresponding incisions. Pygidium in both sexes slightly convex dorsally, with large dense and shallow annular punctures and moderately long erect setae (Fig. 487). Protibia is modified also on inner margin, concave predistally. Male and female protibia distally tridentate on external margin (Fig. 391). Female metatibial terminal spurs short, unequal in length, rounded apically, male one longer, subequal in length and nearly pointed. Spiculum gastrale as in Fig. 569. Aedeagus as in Figs 649–651.
Sexual dimorphism
Female lamellae of antennal club shorter; labroclypeus subtruncate anteriorly, not or vaguely emarginate.
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 69-71, DOI: 10.5852/ejt.2020.721.1127, http://zenodo.org/record/4122118