Algon huadongensis, 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 : 468-470

Algon huadongensis sp. n. ẸAEŴÑḃffm

( Figs 37, 38 , 108–113)

Type material. Holotype. China: Zhejiang: ♁, glued on a card with labels as follows: “An’ji Co., Longwangshan N. R., Qianmutian , alt. 1050–1200m, 15.V.2013, near 30°24'28''N, 119°26'25''E, Chen & Pan leg.” “Holotype / Algon huadongensis / Li & Tang” [red handwritten label] ( SHNU) . Paratypes. Zhejiang: 1♀, same as for the holotype; 1♁, Huzhou City, Anji County, Longwangshan , alt. 1200–1300m, 30°24'N, 119°27'E, 17.V.2013 Nan-Nan Xie leg. ( SHNU) ; 2♀♀, Anji City, Longwangshan Mt., Tonghanggang Hill , 30°25'N, 119°26'E, Alt. 1100m, 11.VI.2012, Hu & Yin leg. ( SHNU) ; Fujian: 1♁, 3♀♀, Wuyishan City, Guadun Vil. , 27°45'N, 117°38'E; alt. 1800m, 01.VI.2012, Peng & Dai leg. ( SHNU).

Description. (Habitus: Figs 37, 38 ) Body small, 13.5–14.0 mm long (5.6–6.2 mm, abdomen excluded). Black to dark brown, mouthparts including labrum reddish, mandibles reddish at base, gradually becoming dark brown distally, antennae reddish, legs black, tarsi reddish brown with darker basal tarsomeres, sternite IX and tergite X of abdomen reddish.

Head transversally elliptic, 1.6 times as wide as long, eyes very large, distance between medial margin of eye 2.8–3.5 times as wide as eyes, eyes 3.7–4.4 times as long as angulated tempora; dorsal surface covered with fine reticulate microsculpture (Type II), in addition, with very fine micropunctation on disc, and abruptly becoming coarser at base; ventral face of head coarsely punctate, with punctural grooves confluent and forming a very wrinkled surface. Antennae moderately long, segments 4–7 markedly oblong, segment 8–9 slightly oblong, segments 10 about as long as wide.

Pronotum almost as wide as long, widest at midlength, sides weakly to more distinctly convex, without dorsal row of punctures, sometimes with 1 or 2 punctures sublaterally; with distinct but fine micropunctation denser than that of head; microsculpture as on head. Elytra trapezoidal, along sides about as long as pronotum; surface uneven, with very dense and profound microsculpture, with exceedingly fine micropunctation hidden in large irregular wrinkled foveae, in addition, each elytron with three rows of larger punctures along elevated sutural interval, on disc at about half width and laterally; deflexed portion of elytra finely, moderately densely punctate and pubescent, setae moderately long, greyish golden.

Abdomen as wide as elytra, abdominal tergites rather densely punctate, punctural grooves drop-shaped; posterior margin of tergite VII with whitish seam.

Aedeagus ( Figs 108–113 ) small, median lobe with acutely pointed apex, semi-membranous dorsal portion bearing numerous short setae; with a straight outline facing toward paramere in lateral view, paramere ( Figs 112, 113 ) very slender, with lateral extensions at basal third; with about 30 peg setae occupying more than half of length of apical portion.

Distribution. China (Zhejiang, Fujian).

Diagnosis. The species is similar to A. sinoculatus , but differs by the smaller and narrower eyes (and thus wider distance between the eyes), very uneven ventral surface of head, impunctate pronotum, shorter elytra and most remarkable, the uneven surface of elytra. Its aedeagus differs from that of A. sinoculatus by the straight outline of the median lobe facing towards the paramere, which is sinuate in the latter ( Figs 102, 103 ); paramere with lateral extensions basally, which is absent in the latter ( Figs 104, 105 ); fewer peg setae on the paramere ( Figs 106, 107 ).

Etymology. The species name, huadongensis , refers to Huadong or Eastern China.

Figures

FIGURES 35–42. Habitus. 35, 36—Algon sinoculatus; 37, 38—A. huadongensis; 39, 40—A. chinensis; 41, 42—A. robillardae. Scale bars: 3 mm.

FIGURES 102–113. Aedeagal characters. 102–107—Algon sinoculatus; 108–113—A. huadongensis; 102, 103, 108, 109—aedeagus in lateral view; 104, 105, 110, 111—aedeagus in ventral view; 106, 107, 112, 113—inner side of apical parameral portion