Maechidius lineatopunctatus Frey, 1969

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 : 68-69

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.4344473
persistent identifier	https://treatment.plazi.org/id/1A3787F6-9D5F-921F-FDBB-FC73C9F52BC7
treatment provided by	Valdenar
scientific name	Maechidius lineatopunctatus Frey, 1969
status

Treatment

Maechidius lineatopunctatus Frey, 1969 View in CoL

Figs 53 View Figs 50–53 , 135 View Figs 133–144 , 226 View Figs 226–241 , 270 View Figs 266–277 , 317 View Figs 317–332 , 390, 486, 646–648

Type material

Holotype

PAPUA NEW GUINEA • ♂; “ Port Moresby New-Guinea P. Voss [h] // TYPE [p, red label] // Type Maechidius lineatopunctatus n sp [h] det. G.Frey,1967/68 [p]”; NHMB.

Paratypes

According to the original description, there are 17 ♂ ♀ at NHMB. I had the opportunity to examine four of them which are referred below to M. mailu sp. nov.

Remarks

Frey (1969: 502) designated the single specimen from Port Moresby as the holotype.

Description

MEASUREMENTS. Holotype male 6.70 mm long.

Dorsum and venter uniformly black-brown, appendages and labroclypeus castaneous brown. Head flattened dorsally on frons, glossy dorsally and ventrally. Male labroclypeus ( Fig. 135 View Figs 133–144 ) subtruncate anteriorly, its lateral margins sinuous in both dorsal and lateral views. Anterolateral angles broadly rounded, not protruding. Upper- and underside of labroclypeus with sparse inconspicuous setae along anterior and lateral margins. Canthus very broadly rounded in dorsal view. Punctures of frons circular to ovoid, moderately deep and dense. Intervening spaces glossy, variably large. Head setae minute, appressed to suberect, not surpassing length of corresponding punctures. Antenna 9-segmented, club 3-lamellate. Pronotum strongly transverse, glossy dorsally and laterally. Anterior margin of pronotum sinuous with slightly protruding anterolateral angles. Basal margin of pronotum broadly rounded. Lateral margin of pronotum in dorsal view nearly straight, stronger constricted anteriad and straight at base, crenulate all along ( Fig. 226 View Figs 226–241 ). An inconspicuous short seta present between every two crenulae. Lateral margin of pronotum hardly sinuous in lateral view. Hypomeron separated from prosternum by moderately high straight carina which is shortly flange-like protruding in posterior half, obtusely angulate medially, with long setae on its anterolateral margin opposite to compound eye ( Fig. 270 View Figs 266–277 ). Antennal pocket moderately deep. Punctures of pronotal disc ovoid, moderately deep and dense, filled with microscopical velvety pubescence, in part horseshoe-shaped along lateral margins of pronotum. Intervening spaces glossy, variably large. Setae as those on head, very inconspicuous. Base of pronotum with very narrow area of microscopical velvety pubescence. Scutellar shield triangular, pointed apically, covered with microscopical velvety pubescence. Elytron glossy, with vague tracks of three longitudinal carinae, including sutural one. Base of elytra with narrow area covered with microscopical velvety pubescence. Punctures of elytral disc linear (long and narrow), rather deep ( Fig. 317 View Figs 317–332 ). Intervening spaces larger than punctures, glossy. Elytral setae inconspicuous, appressed; each seta rises from anterior margin of each puncture, not surpassing length of incision. Male pygidium slightly convex dorsally, with large and shallow annular punctures ( Fig. 486 View Figs 469–486 ). Intervening spaces glossy, generally smaller than punctures. Setae of pygidium suberect to erect, short in anterior, longer in apical half. Male protibia with two distal teeth of which basal one very inconspicuous (Fig. 390). Male protibial terminal spur straight, pointed. Male lower meso- and metatibial terminal spurs strongly curved. Tarsal claws with pulvilli (in male only?). Aedeagus as in Figs 646–648 View Figs 632–651 .