Eurypogon, Motschulsky, 1859

Packova, Gabriela, Hájek, Jiří, Geiser, Michael & Kundrata, Robin, 2024, Taxonomic review of Palearctic Eurypogon Motschulsky (Coleoptera: Artematopodidae), with a redescription of the only European species and descriptions of three new species from China, Zootaxa 5437 (4), pp. 451-479 : 474

An updated identification key to Eurypogon species from the Chinese mainland

1. Head and pronotum blackish, elytra metallic blue to green ( Fig. 1C, D ).......................................... 2

-. Head, pronotum, and elytra more or less uniformly dark brown to blackish....................................... 3

2. Pronotum with slightly concave sides and not so prominent posterior angles ( Fig. 2F in Kundrata et al. 2013); punctures on head and pronotum larger and denser............................................. E. jaechi Kundrata et al., 2013

-. Pronotum with distinctly concave sides and prominent posterior angles ( Fig. 2G in Kundrata et al. 2013); punctures on head and pronotum smaller and sparser........................................... E. heishuiensis Kundrata et al., 2013

3. Male elytra ≥ 2.3 times as long as wide; female elytra ≥ 2.1 times as long as wide; aedeagus with U-shaped phallobase ( Fig. 12D )....................................................................... E. sanzang Wang & Liu, 2021

-. Male elytra ≤ 2.2 times as long as wide; female elytra ≤ 2.0 times as long as wide; aedeagus without U-shaped phallobase.. 4

4. Elytra with relatively rough surface, elytral punctures coarse, moderately large to large ( Fig. 10B, E ).................. 5

-. Elytra with relatively smooth surface, elytral punctures fine, small ( Fig. 10C, F )................................... 6

5. Intervals between elytral punctures within single row usually less than 1.0 times puncture diameter; intervals between elytral punctures of different rows usually about 1.0 puncture diameter ( Fig. 10B ); parameres distinctly shorter, reaching about 3/5 of median lobe ( Fig. 12B )............................................................... E. pubescens sp. nov.

-. Intervals between elytral punctures within single row usually 1.0–2.0 times puncture diameter; intervals between elytral punctures of different rows usually about 2.0–3.0 puncture diameter ( Fig. 10E ); parameres distinctly longer, reaching about the place where the median lobe is abruptly narrowed subapically ( Fig. 12E )............ E. schuhi Packova & Kundrata, 2023

6. Aedeagal median lobe robust, with sides subparallel for most of their length, width at base almost equal to width in middle ( Fig. 12C )................................................................................ E. ruzickai sp. nov.

-. Aedeagal median lobe slender, distinctly widest basally, width at base approximately twice width in middle ( Fig. 12F )........................................................................................... E. turnai sp. nov.

Figures

FIGURE 1. Habitus images of Eurypogon spp. A. Eurypogon cribratus (Hampe, 1867), male, dorsal and lateral view, respectively; B. Eurypogon cribratus (Hampe, 1867), holotype female, dorsal and lateral view, respectively; C. Eurypogon heishuiensis Kundrata et al., 2013, holotype female, dorsal view; D. Eurypogon jaechi Kundrata et al., 2013, holotype female, dorsal view. Scale bars = 3.0 mm.

FIGURE 2. Habitus images of Eurypogon spp. A. Eurypogon pubescens sp. nov., holotype male, dorsal and lateral view, respectively; B. Eurypogon pubescens sp. nov., female, dorsal and lateral view, respectively; C. Eurypogon ruzickai sp. nov., holotype, male, dorsal and lateral view, respectively; D. Eurypogon ruzickai sp. nov., female, dorsal and lateral view, respectively. Scale bars = 3.0 mm.

FIGURE 10. Detail of left elytron of Eurypogon spp, dorsal view. A. Eurypogon cribratus (Hampe, 1867), male; B. Eurypogon pubescens sp. nov., holotype male; C. Eurypogon ruzickai sp. nov., holotype male; D. Eurypogon sanzang Wang & Liu, 2021, male; E. Eurypogon schuhi Packova & Kundrata, 2023, holotype male; F. Eurypogon turnai sp. nov., holotype male; G. Eurypogon granulatus Sakai, 1982, male; H. Eurypogon granulatus Sakai, 1982, female; I. Eurypogon brevipennis Sakai, 1982, female; J. Eurypogon hisamatsui Sakai, 1982, female; K. Eurypogon japonicus Sakai, 1982, male; L. Eurypogon ocularis Sakai, 1982, male. Not to scale.

FIGURE 12. Male genitalia of Eurypogon spp. A. Eurypogon cribratus (Hampe, 1867), dorsal and lateral view, respectively; B. Eurypogon pubescens sp. nov., dorsal and lateral view, respectively; C. Eurypogon ruzickai sp. nov., holotype, dorsal and lateral view, respectively; D. Eurypogon sanzang Wang & Liu, 2021, dorsal view; E. Eurypogon schuhi Packova & Kundrata, 2023, holotype, dorsal view; F. Eurypogon turnai sp. nov., holotype, dorsal and lateral view, respectively; G. Eurypogon granulatus Sakai, 1982, dorsal view; H. Eurypogon japonicus Sakai, 1982, dorsal view; I. Eurypogon ocularis Sakai, 1982, dorsal view. Scale bars = 0.5 mm.