Allopachria yanfengi, Bian, Dongju & Ji, Lanzhu, 2012

Bian, Dongju & Ji, Lanzhu, 2012, Notes on Chinese Allopachria Zimmermann, with descriptions of two new species from Guangxi (Coleoptera: Dytiscidae), Zootaxa 3151, pp. 28-34 : 31

Allopachria yanfengi sp. nov.

( Figs. 2 , 10–13 , 23 )

Type material. Holotype, male: CHINA: Guangxi, Fangchenggang City, Shangsi County, Shiwandashan Natural Forest Park, 2010.11.11, leg. Bian & Tong. Paratype: 1 female, the same data as holotype.

Diagnosis. Allopachria yanfengi sp. nov. resembles A. froehlichi Wewalka, 2000 and A. schillhammeri Wewalka, 2000 in habitus, but can be distinguished from them by its bigger size, penis, and extremely enlarged apical part of parameres.

Description. Body broadly oval, moderately convex (fig. 2). Body length 2.05 mm, width 1.30 mm.

Head ferrugineous; clypeal margin distinctly truncate, without bead; finely and very sparsely punctured; anterior two thirds very finely microreticulate. Antennae flavo-testaceous, moderately long and slender.

Pronotum dark ferrugineous, paler at anterior and lateral margins; lateral margins narrowly bordered; punctures irregular in size and distribution, partly coarse along hind margin; without microreticulation.

Elytra dark ferrugineous, paler at apex; with two flavo-testaceous spots, basal one distinctly larger than subapical one, both of them not reaching suture; punctures extremely fine, mostly regular in size and sparsely distributed; highly polished and shining; without microreticulation.

Ventral side. Predominantly testaceous, head more or less paler; some strong punctures on anterior metaventrite and metacoxal process; very fine and sparse punctures on metaventrite, metacoxae and on abdomen.

Legs testaceous to dark ferrugineous.

Male. First two protarsal and mesotarsal segments slightly enlarged in male. Last abdominal ventrite without microreticulation. Penis (figs.10–11); paramere (figs.12–13).

Female. Distal half of last abdominal ventrite microreticulate.

Distribution. China: Guangxi.

Etymology. This species is dedicated to Yanfeng Tong (Shenyang, China) who collected the type specimens.

Habitat. River ca. 3–8 m wide, substrate of larger boulders, gravel and sand (fig. 23).

Figures

FIGURES 1 – 2. 1, 2) Habitus and colour pattern; 1) Allopachria elongata sp. nov.; 2) Allopachria yangfengi sp. nov. Scale bars = 0.5 mm.

FIGURES 3 – 13. 3 – 5) Allopachria elongata sp. nov.; 6 – 8) Allopachria dudgeoni Wewalka; 9) Allopachria liselotteae Wewalka; 10 – 13) Allopachria yangfengi sp. nov. 3, 6, 10) Penis, in ventral view; 4, 7, 11) Penis, in lateral view; 5, 8, 9, 13) Paramere, in outer lateral view; 12) Paramere, in inner lateral view. Scale bar = 0.2 mm.

FIGURES 22 – 23. Habitat of 22) Allopachria elongata sp. nov.; 23) Allopachria yanfengi sp. nov. [photogragh by Tong].