Maechidius peregrinus Lansberge, 1886

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, European Journal of Taxonomy 721, pp. 1-210 : 96-97

publication ID	https://doi.org/ 10.5852/ejt.2020.721.1127
publication LSID	lsid:zoobank.org:pub:89E62EF8-2E45-4C59-94B7-6A5603E8939B
DOI	https://doi.org/10.5281/zenodo.4344467
persistent identifier	https://treatment.plazi.org/id/1A3787F6-9D43-923B-FDBA-FD86CA372A91
treatment provided by	Valdenar
scientific name	Maechidius peregrinus Lansberge, 1886
status

Treatment

Maechidius peregrinus Lansberge, 1886 View in CoL

Figs 73 View Figs 70–73 , 162 View Figs 157–168 , 245 View Figs 242–258 , 276 View Figs 266–277 , 335 View Figs 333–348 , 408, 509, 691–693

Type material

Syntype

INDONESIA • ♀; South Sulawesi; NMNL. Studied from photographs .

New material

INDONESIA • 2 ♀♀; “ INDONESIA, S Sulawesi, Palopo 8 km NW, Battang vill., 350 m, 2°57’S, 120°08’E, 26-28.XII.2019, at light, leg. local collector”; DTC GoogleMaps • 1 ♀; “ INDONESIA, S Sulawesi, W of Palopo, Rantepao 7 km W, Sarambu vill., 985 m, 2°58’54”S, 119°50’18”E, at light, 28.XII.2019 ”; DTC GoogleMaps • 1 ♂, 2 ♀♀; “ INDONESIA, S Sulawesi, Palopo 45 km SW, 5 km SW Makale, 1490 m, 3°08’32”S, 119°49’27”E, 1.I.2020 ”; DTC GoogleMaps • 1 ♂; “ INDONESIA, S Sulawesi, Palopo 12 km NWW, Puri Rimba resort, 2°57’31”S, 120°05’13”E, 765 m, 4.I.2020, at light”; DTC GoogleMaps • 1 ♀; “ INDONESIA, S Sulawesi, Palopo 12 km NWW, Puri Rimba resort, 2°57’31”S, 120°05’13”E, 765 m, 4.I.2020, at light”; DTC GoogleMaps • 2 ♂♂, 3 ♀♀; “ INDONESIA, S Sulawesi, W of Palopo, Rantepao 10 km NW, Landorundun vill., 2°53’41”S, 119°50’59”E, 1430 m, at light, 14.I.2020 ”; DTC GoogleMaps .

Description

MEASUREMENTS. Total body length 7.60–9.40 mm.

Dorsum and venter uniformly black-brown, labroclypeus, antennae and legs brown. Male ( Fig. 162 View Figs 157–168 ) and female labroclypeus shallowly emarginate to subtruncate on anterior margin, its lateral margins nearly straight to slightly sinuous in both dorsal and lateral views. Anterolateral angles of labroclypeus obtuse, rounded, not protruding anteriad. Frons convex dorsally. Head punctures ovoid to irregularly hexagonal, very deep and dense, filled with microscopical velvety pubescence. Intervening spaces glossy, generally much smaller than punctures. Head setae suberect to erect, moderately dense, much longer on frons than on anterior part of head; each seta rises from anterior margin of corresponding puncture. Pronotum strongly transverse, sinuous on anterior margin, with slightly protruding anterolateral angles. Basal margin of pronotum very broadly rounded to subtruncate. Lateral margin of pronotum broadly rounded, crenulate all along ( Fig. 245 View Figs 242–258 ). Long erect apically slightly curved seta present between every two crenulae. Maximum width of pronotum postmedially. Pronotal punctures ovoid, very deep and dense, filled with microscopical velvety pubescence. Intervening spaces glossy, much smaller than punctures, in part wrinkled. Lateral and basal margins, antero- and posterolateral angles partly covered with microscopical velvety pubescence. Setae of pronotum generally shorter than those on head, erect, apically curved; wide median prebasal area glabrous. Hypomeron broadly emarginate and very long setose on anterior margin which is flange-like ( Fig. 276 View Figs 266–277 ). Scutellar shield narrowly rounded apically. Elytron with tracks of three flat glabrous longitudinal carinae; sutural carina not indicated. Elytral punctures elongate ovoid and narrow, deep and dense. Intervening spaces glossy, generally larger than punctures, in part covered with microscopical velvety pubescence. Elytral setae suberect to erect, variably long. All setae rise from anterior margin of corresponding punctures, shorter ones about their length, longer ones much longer and arranged in longitudinal rows along tracks of elytral carinae. Male pygidium slightly convex dorsally, partly covered with microscopical velvety pubescence, with moderately large dense circular punctures and variably large intervening spaces ( Fig. 509 View Figs 504–521 ). Female pygidium with rather large obtuse median impression at posterior margin. Setae of pygidium suberect to erect, moderately long. Male and female protibia widened distally, with two obtuse distal teeth on external margin (Fig. 408). Distal margin of metatibia in both sexes with projection over basal metatarsomere. Male protibial terminal spur strongly curved, female one straight and pointed. Male lower meso- and metatibial terminal spur strongly curved, not rounded apically. Male basal metatarsomere widened and dorso-ventrally flattened. All claws with pulvilli in both sexes. Aedeagus as in Figs 691–693 View Figs 682–696 .

Sexual dimorphism

Lamellae of female antennal club shorter; terminal spur of protibia straight and pointed; basal metatarsomere moderately widened and flattened; pygidium humped medially; lower meso- and metatibial terminal spur not curved.