Algon kuankuoshuiensis, Li & Tang, 2023

Li, Chong & Tang, Liang, 2023, New species and records of Algonina Schillhammer & Brunke, 2018, mainly from China, Zootaxa 5256 (5), pp. 457-482 : 464

Algon kuankuoshuiensis sp. n. ŴñṁŴÑḃffm

( Figs 21–23 , 78–83)

Type material. Holotype. China: Guizhou: ♁, glued on a card with labels as follows: “ Suiyang County, Kuankuoshui N. R., Gongtonggou , alt. 1550 m, 9.VI.2010, Yin, Zhai & Lu leg. ( SHNU)” [red handwritten label] (SHNU) . Paratypes. 1♁, same data as holotype ( SHNU).

Description. (Habitus: Figs 21, 22 ): 14.5–15.5 mm long (7.6–8.2 mm, abdomen excluded). Body black, rather dull; palpi reddish brown, antennae with basal three segments dark brown, the rest segments gradually and indistinctly becoming paler distally, legs dark brown with tarsi reddish brown.

Head subquadrangular, 1.1 times as wide as long, eyes moderately small, tempora 1.4 times as long as eyes, tempora rounded, sparsely punctate; dorsal surface covered with very fine and sparse micropunctation; entire head densely and profoundly covered with microsculpture (Type I), with 3 or 4 large punctures arranged in an oblique row from medio-apical margin of eye to medio-basal portion of head; antennae long, with each segment conspicuously oblong.

Pronotum ( Fig. 23 ) 1.1 times as wide as long, widest at about basal third, sides slightly narrowed toward base, more strongly narrowed toward anterior margin; without indication of dorsal rows of punctures but with a pair of punctures sublaterally in anterior half of pronotum; microsculpture as on head; scutellum finely and very sparsely punctate; elytra ( Fig. 23 ) subparallel, along sides almost as long as pronotum along midline, with distinct depression along base; basal depression and deflexed sides moderately densely, finely punctate and pubescent, setae golden grey; major portion of disc impunctate except for 2 to 4 large setiferous punctures ambiguously arranged in a row sublaterally; entire elytra covered with very dense isodiametrical microsculpture (type IIIa).

Abdomen very broad, widest at second visible tergite, distinctly wider than elytra; posterior margin of tergite VII without whitish seam.

Aedeagus ( Figs 78–83 ) large, median lobe with pointed apex in ventral view, in lateral view distinctly hookshaped, with a large and distinct subapical tooth on side facing paramere, paramere broad, parallel-sided in basal two-thirds, narrowed toward notched apex, with several peg setae divided into 2 clusters at about apical third ( Fig. 82, 83 ) or without peg seta.

Distribution. China (Guizhou).

Diagnosis. The species is very similar to the geographically close A. kaiserianus ( Bernhauer, 1933) , but it differs in a larger body, the glabrous area of elytra with a loose row of 2-4 large setiferous punctures, paramere of aedeagus relatively wider and more parallel-sided in ventral view and with a longer hooked apex in lateral view.

Etymology. Named after the type locality, Kuankuoshui National Nature Reserve.

Figures

FIGURES 21–26. 21–23—Algon kuankuoshuiensis; 24–26—A. daweishanus; 21, 22, 24, 25—habitus; 23, 26—pronotum and elytra (right side).

FIGURES 78–89. Aedeagal characters. 78–83—Algon kuankuoshuiensis; 84–89—A. daweishanus; 78, 79, 84, 85—aedeagus in lateral view; 80, 81, 86, 87—aedeagus in ventral view; 82, 83, 88, 89—inner side of apical parameral portion.