Maladera bansongchana Ahrens, Fabrizi & Liu, 2021

Fabrizi, Silvia, Liu, Wan-Gang, Bai, Ming, Yang, Xing-Ke & Ahrens, Dirk, 2021, A monograph of the genus Maladera Mulsant & Rey, 1871 of China (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), Zootaxa 4922 (1), pp. 1-400 : 206

publication ID

https://doi.org/ 10.11646/zootaxa.4922.1.1

publication LSID

lsid:zoobank.org:pub:D7F9C6A3-9C28-4F4C-8E81-BF24849FDD8C

DOI

https://doi.org/10.5281/zenodo.4534689

persistent identifier

https://treatment.plazi.org/id/03BD87E6-6BAC-FF08-AF89-F8FDFD123ABF

treatment provided by

Plazi

scientific name

Maladera bansongchana Ahrens, Fabrizi & Liu
status

sp. nov.

Maladera bansongchana Ahrens, Fabrizi & Liu , sp. n.

Figures 47 View FIGURE 47 A–E, 111

Type material examined. Holotype: ♂ “ Laos, 1.-16.v.1999, Louangphrabang pr., 20°33-4’N 102°14’E, BanSong-Cha (5km W) 1200m, Vit Kuban leg./ 384 Sericini Asia spec.” ( CP) . Paratypes: 1 ♂ “ Laos, 1.-16.v.1999, Louangphrabang pr., 20°33-4’N 102°14’E, BanSongCha (5km W) 1200m, Vit Kuban leg./ 384 Sericini Asia spec./ LS44” ( CP) , 1 ♂ “[ China] Yunnan, Xishuangbanna, Mengla , 2011-IV-28 / LW-1342” ( IZAS) , 1 ♂ “[ China] Mengla , Yunnan, 20.IV. 1982, 670m, leg. Yu Peiyu ” ( IZAS) .

Description. Length: 6.9 mm, length of elytra: 5.4 mm, width: 4.0 mm. Body oblong-oval, dorsal face reddish brown, dull, antenna yellow, labroclypeus shiny, except some single setae on head dorsal surface nearly glabrous.

Labroclypeus narrow and subrectangular, widest at base, lateral margins straight and subparallel, anterior angles strongly rounded, anterior margin weakly emarginate medially, margins distinctly reflexed; lateral margin and ocular canthus produce a distinct angle; surface flat, finely and densely punctate, with a few larger punctures each bearing an erect seta; frontoclypeal suture indistinctly incised, evenly curved; smooth area anterior to eye weakly convex, three times as wide as long; ocular canthus moderately long and narrow (1/4 of ocular diameter), finely and densely punctate, with a terminal seta. Frons dull, behind frontoclypeal suture narrowly shiny, with moderately dense, fine punctures, with a few long setae beside eyes and behind frontoclypeal suture. Eyes very large, ratio diameter/ interocular width: 0.9. Antenna with ten antennomeres; club with three antennomeres and strongly reflexed, 2.5 times as long as remaining antennomeres combined. Mentum elevated and slightly flattened anteriorly.

Pronotum transverse, widest at middle, lateral margins evenly convex and convergent to angles, anterior angles moderately produced and right-angled, posterior angles blunt, weakly rounded at tip; anterior margin convex, with indistinct but complete marginal line, base without marginal line; surface finely and densely punctate, with minute setae in punctures; lateral anterior and lateral margin finely setose; hypomeron carinate, not produced ventrally. Scutellum wide, triangular, with fine, dense punctures.

Elytra widest in posterior third, striae distinctly impressed, finely and sparsely punctate, intervals slightly convex, with fine and dense punctures concentrated along striae, with minute setae in punctures, odd intervals with a very few short setae; epipleural margin robust, ending at strongly curved external apical angle of elytra, epipleura sparsely setose; apical border of elytra membraneous, with a rim of microtrichomes (visible at ca 100x magnification).

Ventral surface dull, coarsely and densely punctate, glabrous, metasternal disc sparsely covered with fine, short setae; metacoxa with a few longer setae laterally. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.8. Abdominal sternites finely and densely punctate, glabrous, each sternite with a transverse row of punctures each bearing a fine seta. Pygidium moderately convex and dull, coarsely and densely punctate, without impunctate midline, glabrous except a few robust setae along apical margin.

Legs moderately long and wide, shiny; femora with two longitudinal rows of setae, finely and sparsely punctate. Metafemur with anterior margin acute, without adjacent serrated line, anterior row of setae not reduced; posterior margin smooth, weakly widened at apex and smooth ventrally, not serrate dorsally, finely shortly setose. Metatibia moderately long and wide, widest at middle, ratio of width/length: 1/3.0, sharply carinate dorsally, with two groups of spines, basal group at middle, apical group at three quarters of metatibial length, with a few robust setae basally subparallel to dorsal margin; lateral face longitudinally convex, shiny, sparsely punctate and glabrous; ventral margin finely serrate, with three long and robust setae of which distal one is more distant; medial face smooth and glabrous; apex finely serrate, moderately truncate interiorly near tarsal articulation. Tarsomeres dorsally sparsely and finely punctate, punctures with short setae, moderately setose ventrally; metatarsomeres with a strongly serrated ridge ventrally and a smooth subventral longitudinal carina, laterally and dorsally carinate; first metatarsomere little shorter than following two tarsomeres combined and little longer than dorsal tibial spur. Protibia moderately long, bidentate; anterior claws symmetrical, basal tooth of both claws bluntly truncate at apex.

Aedeagus: Fig. 47 View FIGURE 47 A–D. Habitus: Fig. 47E View FIGURE 47 . Female unknown.

Diagnosis. The shape of the parameres in Maladera bansongchana Ahrens, Fabrizi & Liu , sp. n. differs in from other Chinese species of the M. indica group in having blunt lateral extensions at the tip of both parameres on both sides.

Etymology. The species is named after its type locality, BanSongCha (adjective in the nominative singular).

Variaion. Length: 6.9–7.1 mm, length of elytra: 5.4–5.6 mm, width: 3.8–4.0 mm.

Distribution. See map ( Fig. 111 View FIGURE 111 ) and Table 1.

IZAS

Institut Zoologii Akademii Nauk Ukraini - Institute of Zoology of the Academy of Sciences of Ukraine

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Melolonthidae

SubFamily

Melolonthinae

Tribe

Sericini

Genus

Maladera

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF