Allopachria wuzhifengensis, Bian, Dongju & Ji, Lanzhu, 2010

Bian, Dongju & Ji, Lanzhu, 2010, Allopachria Zimmermann, 1924 from Jiangxi, China, with descriptions of two new species (Coleoptera: Dytiscidae), Zootaxa 2350, pp. 59-65 : 60-61

Allopachria wuzhifengensis sp. nov.

( Figs 1 , 3–5, 11–12 )

Type material. Holotype (IAECAS), male: CHINA: Jiangxi, Ganzhou City, Shangyou County, Wuzhifeng Town, 25°57.747’N 114°04.158’E, ca. 559 m, 6. X. 2009, leg. Bian & Tong (loc. 13). Paratypes: 1 male, 2 females (IAECAS), the same data as holotype; 1 female (IAECAS): CHINA: Jiangxi, Ji’an City, Suichuan County, Duiqian Town, 26°20.018’N 114°16.662’E, ca. 228 m, 2. X. 2009, leg. Bian & Tong (loc. 10); 1 female (IAECAS): CHINA: Jiangxi, Ganzhou City, Shangyou County, Wuzhifeng Town, 25°57.420’N 114°04.646’E, ca. 554 m, 5. X. 2009, leg. Bian & Tong (loc. 12); 1 male, 2 females (IAECAS): downstream of loc. 13, 7. X. 2009, leg. Bian & Tong (loc. 14); 1 female ( NMW): CHINA: Jiangxi, ca. 70 km NE Jing’an Town, 115°11’17”E 29°03’17”N, ca. 550 m, 27.3.2003, leg. Schönmann, Komarek & Wang ( CWBS 514); 3 females ( NMW, CWW): CHINA: Hunan, ca. 25 km N Pingjiang City, 113°36’05”E 28°50’10”N, ca. 200 m, 20.3.2003, leg. Schönmann, Komarek & Wang ( CWBS 500); 1 male, 1 female ( NMW): CHINA: Hunan, NE Nanjiangqiao, Mufu Shan, 113°48’03”E 28°57’17”N, ca. 600 m, 21.3.2003, leg. Schönmann, Komarek & Wang ( CWBS 504); 2 males, 4 females ( NMW, CWW): CHINA: Hunan, Dawei Shan Nat. Park, 114°06’31”E 28°25’01”N, ca. 1450 m, 30.3.2003, leg. Schönmann, Komarek & Wang ( CWBS 519).

Diagnosis. This species has in common the trifurcate penis with A. bimaculata (Satô) , A. flavomaculata (Kamiya) , A. jaechi Wewalka and A. wangi Wewalka. From A. bimaculata and A. flavomaculata it can be separated by its larger size, head completely covered with microreticulation, different elytral spots, and anal sternite with distinct microreticulation. From A. wangi and A. jaechi it can be distinguished by pronotum and elytra without microreticulation, and segments 5 to 9 of antennae distinctly enlarged. From other all known species of the genus it can be separated by the unique-shaped penis.

Description. Body regularly oval, moderately convex ( Fig. 1 ). Total length of body 2.47–2.85 mm, width 1.69–1.85 mm.

Head testaceous to ferrugineous; clypeus somewhat truncate medially, without bead; two size of punctures sparsely and irregularly distributed, sparser on vertex; completely microreticulate; with a row of large punctures along eyes; antennae flavo-testaceous, moderately long and slender, five to nine segments enlarged ( Fig. 12 ).

Pronotum dark ferrugineous to black, slightly paler along lateral margins; lateral margins finely bordered; punctures partly coarse, irregular in size and distribution, particularly sparser in the center; anterolateral corner sharply angled, posterolateral corner almost right­angled; without microreticulation.

Elytra dark ferrugineous to black, with a flavo-testaceous pattern as follow: a wide basal band with an indentantion on posterior margin, and a sub-apical triangular patch; with double sized punctures irregularly and densely distributed; highly polished and shining; without microreticulation.

Ventral side. Epipleura and most of the ventral side rufo-testaceous; prosternum dark testaceous to black; punctures of large size sparsely distributed on metaventrite, metacoxae and on basal two sternites; metacoxae somewhat wrinkled and not microreticulated; anal sternite distinctly microreticulate with some small punctures irregularly distributed.

Legs rufo-testaceous. First protarsal segment of male distinctly enlarged ( Fig. 11 ), first mesotarsal segment also enlarged.

Aedeagus. Penis as in Figs 3–4 , parameres as in Fig. 5 .

Females. Body length 2.50–2.65 mm, width 1.70–1.75 mm; punctures of pronotum and elytra more distinct than in males; five to nine segments of antennae not enlarged as in males; protarsi and mesotarsi not modified.

Distribution. China: Jiangxi, Hunan.

Habitat. This species has been collected in a small stream, 1.5–2 m wide, with some rock pools, stones, sand, gravel, decaying plant material, surrounding vegetation composed of shrubs, bamboo grove and tea plant (locality 13); small stream, 1 m wide, unpolluted, partly shaded, with gravel, sand, shore side with grass, flowing through the secondary forest (locality 10); small stream along rice field, <0.5 m wide, partly dry, slightly polluted, with sand and some gravel (locality 12).

Etymology. Name after the type locality, Wuzhifeng Town, in Jiangxi Province.

Figures

FIGURES 1 – 2. Habitus and color pattern. 1. Allopachria wuzhifengensis sp. nov.; 2. Allopachria grandis sp. nov. Scale lines: 1 – 2 = 0.5 mm

FIGURES 3 – 12. Allopachria wuzhifengensis sp. nov., holotype: 3 – 5, 11 – 12; Allopachria grandis sp. nov., holotype: 6 – 10. 3, 6) Penis, in dorsal view; 4, 7) penis, in lateral view; 5, 8) paramere, in lateral view; 9, 11) right protarsus; 10, 12) antennae. Scale bars: 3 – 8 = 0.1 mm, 9 – 12 = 0.2 mm.