Maechidius speciosus Telnov 2020, comb. nov.
Creators: name: Telnov, Dmitry
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Maechidius
Maechidius speciosus

description: Maechidius speciosus (Frey, 1969) comb. nov.
Figs 86, 179–180, 256, 281, 346, 418, 519–521, 562, 718–720
Paramaechidius speciosus Frey, 1969: 507.
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]// Stn. No. 51 [p]// TYPUS [p, red label]// TYPE Paramaechidius speciosus n. sp. [h] det. G.Frey,1967/68 [p]”; BMNH.
New material
INDONESIA • 1♂;“W. NEW GUINEA: Mt.Nomo. S.of Mt.Bougainville. 700ft. ii.1936.// L.E.Cheesman. B.M.1936-271.”; BMNH • 1 ♂; “ ♂ // DUTCH NEW GUINEA: Cyclops Mts., Mt. Lina. 3,500ft. iii. 1936. L.E.Cheesman. B.M.1936-271.// pauxillus det. G.Frey, 1967/68”; BMNH • 1 ♂; “ DUTCH NEW GUINEA: Japen [sic ♂] I., Mt. Baduri. 100 ft., viii.1938. L.E.Cheesman. B.M.1938-596.”; BMNH • 1 ♂, 5 ♀♀; “Stn. No. 51. // NEW GUINEA: Madang Dist., Finisterre Mts. Budemu c. 4000 ft. 15-24.x.1964 // M.E. Bacchus. B.M. 1965-120.// Paramaechidius pauxillus det. G.Frey, 1967/68.”; BMNH • 3 specimens; “Stn. No. 46. // NEW GUINEA: Madang Dist., Finisterre Mts. Damanti 3,550 ft. 2-11.x.1964 // M.E. Bacchus. B.M. 1965-120.”; BMNH • 17 ♂♂, 26 ♀♀; “ Collection Naturhistorisches Museum Basel // Papua New Guinea Madang Prov. L. Cizek lgt.// Salemben village 145°24’E 4°42’S 16.XII. 2000, 750 m”; NHMB.
Description
Dorsum and venter covered with microscopical velvety pubescence. Male labroclypeus (Fig. 179) broadly rounded on anterior margin, its anterolateral angles acute and protruding. Female labroclypeus (Fig. 180) with less acute anterolateral angles. Head punctures ovoid, rather deep and dense. Head setae scale-like, dense, suberect, moderately long, in part clavate. Some setae not surpassing length of corresponding punctures. Pronotum broadly emarginate on anterior margin with protruding anterolateral angles. Basal margin of pronotum slightly sinuous. Lateral margin of pronotum in dorsal view very broadly rounded in anterior half, shallowly emarginate postmedially towards base (Fig. 256). Hypomeron slightly emarginate and long setose on anterior margin which is flange-like protruding, shallowly emarginate and long setose opposite compound eye (Fig. 281). Antennal pocket deep. Pronotal punctures of irregular oblong shape, deep, intervening spaces generally larger than punctures. Pronotal setae scale-like, dense, suberect, in part minute and not surpassing length of corresponding punctures, in part (in particular, along lateral margins and on anterior margin opposing frons) long and clavate. Elytral punctures irregular in shape, deep, somewhat irregularly clustered (Fig. 346) and generally smaller than those on pronotum. Setae between puncture clusters longer, scale-like, stronger erect, arranged in several irregular longitudinal rows. Setae in puncture clusters minute, not surpassing length of corresponding punctures. Male and female pygidium with deep irregularly shaped punctures. Intervening spaces glossy, variably large. Male pygidium with two flat latero-median humps (humps very inconspicuous in some specimens), with group of large long dense scale-like setae (can be strongly reduced in some specimens) pointing obliquely to middle or posteriad (Figs 519–520). Female pygidium with two latero-median humps and transverse row of long scale-like whitish setae pointing obliquely medially (Fig. 521). Male and female protibia with two rather acute terminal teeth on external margin (Fig. 418). Male terminal protibial spur curved, female one straight and pointed. Spiculum gastrale as in Fig. 562. Male aedeagus as in Figs 718–720.
Sexual dimorphism
Lamellae of female antennal club shorter; apex of female elytron with conspicuous, long and rather acutely protruding in this species; female pygidium with a glossy flat median longitudinal area between two latero-median humps.
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 112-114, DOI: 10.5852/ejt.2020.721.1127, http://zenodo.org/record/4122118