Serica longula Frey, 1972

Ahrens, Dirk, Fabrizi, Silvia, Bai, Ming & Liu, Wangang, 2022, Taxonomic revision of Serica MacLeay, 1819 (sensu lato) from China and adjacent areas (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), with updates on Nipponoserica Nomura, 1972, Zootaxa 5186 (1), pp. 1-83 : 9-11

Serica longula Frey, 1972

Figures 1A–D , 22

Serica longula Frey, 1972: 165 .

Type material examined. Holotype: ♀ “Kuatun (2300 m) 27,40 n.Br. 117,40 ö. L. J. Klapperich 11.4. 1938 (Fukien)/ Type Serica longula G. Frey 1972 ” ( ZMFK) . Paratype: 1 ♀ “Kuatun (2300 m) 27,40 n.Br. 117,40 ö. L. J. Klapperich 12.5. 1938 (Fukien)/ Type Serica longula G. Frey 1972 ” ( ZMFK) .

Additional material examined. 1 ♂ “Chine 28.VII.46 Kuatun, Fukien leg. Tscheng-Sen ” ( MHNG), 2 ♂♂ “ Kuatun, Fukien China, 15.6.46 leg. Tschung-Sen / ex. coll. V. Balthasar National Museum Prague, Czech Republic ” ( NMPC), 1 ♂, 1 ♀ “ Kuatun (2300 m) 27, 40 n.Br. 117,40 ö.L. J. Klapperich 11.5. 1938 (Fukien)” ( NMPC), 1 ♂ “ Kuatun (2300 m) 27, 40 n.Br. 117,40 ö.L. J. Klapperich 11.4. 1938 (Fukien)” ( NMPC), 1 ♂ “ Kuatun (2300 m) 27, 40 n.Br. 117,40 ö.L. J. Klapperich 30.4. 1938 (Fukien)” ( NMPC), 1 ♂ “ Kuatun (2300 m) 27, 40 n.Br. 117,40 ö.L. J. Klapperich 8.5. 1938 (Fukien)” ( NMPC), 1 ♀ “ Kuatun (2300 m) 27, 40 n.Br. 117,40 ö.L. J. Klapperich 29.5. 1938 (Fukien)” ( NMPC), 1 ♀ “ Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 26.5. 1938 (Fukien)” ( NMPC), 1 ♂ “ China: Fukien 06.V.1938 leg. Klapperich ZFMK Bonn” ( ZFMK), 1 ♂ “San’gang, Mt. Wuyishan, Fujian, 16- 21.Ⅴ.2004, leg. Yuan Caixia, Lijing ” ( HBUM), 1 ♂ “ Huangxizhou, Mt. Wuyishan , Fujian, 27.Ⅴ.2004, leg. Yuan Caixia, Lijing ” ( HBUM) .

Redescription (male). Length: 8.2 mm, length of elytra: 6.4 mm, width: 4.6 mm. Body elongate, dorsal face yellow and dull, glabrous, abdomen brown, antenna yellow.

Labroclypeus subtrapezoidal, little wider than long, widest at base, lateral margins weakly convex and moderately convergent to moderately rounded anterior angles, lateral margin and ocular canthus producing a blunt angle, margins moderately reflexed; anterior margin distinctly emarginate medially; surface flat, finely and densely punctate, with a few long, erect setae anteriorly; frontoclypeal suture weakly impressed and angled medially; smooth area in front of eye approximately twice as wide as long; ocular canthus short and fine (1/4 of ocular diameter), very finely sparsely punctate, with a terminal seta. Frons with fine, dense punctures, dull toment anteriorly weaker, glabrous except for a few setae beside eyes. Eyes moderately large, ratio of diameter/interocular width: 0.62. Antenna composed of 9 antennomeres, club with three antennomeres, straight, 1.1 times as long as remaining antennomeres combined. Mentum anteriorly elevated and flattened.

Pronotum transverse and subtrapezoidal, widest at base, lateral margins evenly and weakly convex, weakly convergent anteriorly; anterior angles moderately produced and rectangular; posterior angles blunt, moderately rounded at tip; anterior margin weakly convex, marginal line widely interrupted medially; basal margin without marginal line; surface finely and densely punctate, glabrous; anterior and lateral margins without setae. Scutellum wide, triangular, with coarse and moderately dense punctures, glabrous.

Elytra oblong, widest at posterior quarter, striae distinctly impressed, finely and densely punctate; intervals weakly convex, with fine, moderately dense punctures concentrated along striae; odd intervals with a few fine, erect, short setae, otherwise glabrous; epipleural margin robust, ending at strongly rounded external apical angle of elytra, epipleura sparsely setose, apical border membraneous, with a rim of microtrichomes.

Ventral surface dull, metasternum and metacoxa with large and dense punctures, almost completely glabrous; metacoxa glabrous except for a several long setae laterally. Abdominal sternites, in addition to generally distributed fine and moderately dense punctures, each with a distinct transverse row of coarse punctures each bearing a short and robust seta, otherwise glabrous; penultimate sternite apically with a shiny smooth short chitinous border and a wide transversal shallow impression at middle. Mesosternum between mesocoxae narrower than mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.19. Pygidium convex, yellow but dull, with fine, moderately dense punctures and a few longer setae on apical half.

Legs moderately wide and long; femora with two longitudinal rows of setae, finely and moderately densely punctate; metafemur dull, anterior margin acute, lacking an adjacent serrated line, posterior ventral margin straight, not widened in apical half, entirely serrate, dorsal margin also serrate, finely setose. Metatibia moderately wide and long, widest at apex, ratio width/length: 1/3.8, dorsally sharply carinate, with two groups of spines, basal one shortly before middle, apical one at four fifths of metatibial length; in basal half with a few punctures and short fine spines; lateral face longitudinally convex, with moderately dense and coarse punctures, glabrous; ventral margin serrate, with two widely distant spines; medial face finely sparsely punctate and with sparse short setae, apex interiorly near tarsal articulation shallowly concave. Tarsomeres irregularly partly coarsely punctate dorsally, ventrally with sparse, short setae; metatarsomeres with a strongly serrated ridge ventrally and a smooth subventral longitudinal carina; first metatarsomere ventrally glabrous, little longer than following tarsomere and almost twice as long as dorsal tibial spur. Protibia moderately long, bidentate. All claws symmetrical, feebly curved and long, with normally developed basal tooth.

Aedeagus: Fig. 1A–C . Habitus: Fig. 1D .

Figures

FIGURE 1. A–D: Serica longula Frey, 1972 (Kuatun, Fukien); E–H: S. tiammushan Ahrens, Fabrizi & Liu, new species (holotype); I–M: S. longwan Ahrens, Fabrizi & Liu, new species (holotype). A, E, I: Aedeagus, left side lateral view; C, G, L: Aedeagus, right side lateral view; B, F, K: Parameres, dorsal view; J: aedeagus, dorsal view; D, H, M: Habitus (not to scale). Scale: 0.5 mm.

FIGURE 22. Distribution of Serica allolongipes Ahrens, Fabrizi & Liu, new species, S. gaoligong, S. guangnanensis Ahrens, Fabrizi & Liu, new species, S. klapperichi Frey, 1972, S. longipes Ahrens, Fabrizi & Liu, new species, S. nanhua Ahrens, Fabrizi & Liu, new species, S. longula Frey, 1972, S. lupina Arrow, 1946, S. shiduensis Ahrens, Fabrizi & Liu, new species; “?” repre- sents the non-localized occurrence of S. yini Ahrens, Fabrizi & Liu, new species in Myanmar .