Eurypogon ruzickai, Packova & Hájek & Geiser & Kundrata, 2024

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 : 468-469

publication ID	https://doi.org/ 10.11646/zootaxa.5437.4.1
publication LSID	lsid:zoobank.org:pub:1616145F-A3A5-4586-B330-AD5D029C39E1
DOI	https://doi.org/10.5281/zenodo.10985284
persistent identifier	https://treatment.plazi.org/id/0392879D-FFA9-FFF7-769C-E433FE1BEDFE
treatment provided by	Plazi
scientific name	Eurypogon ruzickai
status	sp. nov.

Treatment

Eurypogon ruzickai sp. nov.

( Figs 2C, D View FIGURE 2 ; 6E, F View FIGURE 6 ; 7E, F View FIGURE 7 ; 10C View FIGURE 10 ; 11C, G, K View FIGURE 11 ; 12C View FIGURE 12 ; 13G–I View FIGURE 13 ; 14 View FIGURE 14 )

Type locality. China, Yunnan province, Haba Xueshan Mt. GoogleMaps , ca. 2.5 km SW of Haba village, 27°22.4′N 100°06.7′E ( Fig. 14 View FIGURE 14 ).

Type material. Holotype male ( NMPC), labeled: “ China: Yunnan province, 2.5 km SW of Haba, 19.VI. 2007, Haba Xueshan Mts. , 27°22.4’N 100°06.7’E, 3100 m, J. Hájek & J. Růžička leg. // individually collected under bark and on rotten wood of old fallen logs, on vegetation, margin of pasture / mixed forest with remnants of rotten logs // Collection National Museum Prague, Czech Republic // “ HOLOTYPE m#, EURYPOGON , ruzickai sp. nov., Packova et al. det. 2024 [red label]” GoogleMaps . Paratypes (3 females): 1 female: same label data as for the holotype ( NMPC) GoogleMaps ; 1 female: “ Yunnan, 2000–3000m, 27.20N 100.11E, Habashan mts. , SE slope, 10–13/7. [19]92, Vít Kubáň leg.” ( NHMB) GoogleMaps ; 1 female: “ CHINA – YUNNAN, HABASHAN - Habashan Mts. , 5.– 13.6.2002, alt. 2800–3150m, WGS 84: 27°20′ N, 100°09′ E, lgt. Bečvář S. & Fouquè R.+H." ( NMPC). GoogleMaps All paratypes with the respective red paratype labels.

Diagnosis. This species can be recognized based on the following combination of characters: head, pronotum, and elytra ( Fig. 2C,D View FIGURE 2 ) more or less uniformly dark brown to blackish, male elytra 2.0 times as long as wide; female elytra 1.9–2.0 times as long as wide; elytra ( Fig. 10C View FIGURE 10 ) with relatively smooth surface, elytral punctures fine, small; aedeagus ( Fig. 12C View FIGURE 12 ) without U-shaped phallobase, median lobe relatively robust and broad, with sides subparallel in basal 4/5 of their length.

Description. Holotype, male. Body ( Fig. 2C View FIGURE 2 ) 4.50 mm long, 2.45 times as long as wide. Body coloration dark brown to black, shiny; mouthparts, antennae and legs paler; mouthparts brown to dark brown; antennae brown to dark brown, with scape darker and antennomeres II and III paler, reddish brown; trochanters reddish brown to brown, femora darker, tibiae reddish brown to brown, with basal part paler, tarsomeres I–IV reddish brown to brown, tarsomere V reddish brown. Body dorsally covered with yellowish to light brown pubescence.

Head ( Fig. 7E View FIGURE 7 ) with surface smooth, sparsely and coarsely punctate, punctation very sparse in middle of frons, denser on vertex and near eyes, slightly rugous on clypeus; punctures usually ovoid, each medially with long, suberect seta oriented frontally. Minimum interocular distance 1.50 times maximum eye width. Labrum transverse, anteriorly widely rounded. Mandible rather gradually narrowed toward apex, slightly curved. Maxillary palpus about twice as long as labial palpus, apical palpomere elongate hatchet-like, widest subapically, apically obliquely rounded. Antenna ( Fig. 6E View FIGURE 6 ) relatively long, slender, reaching about 3/4 of elytral length, about 0.95 times as long as elytral length; ratio of antennomere lengths = 1.4: 1.0: 1.1: 2.8: 3.2: 3.5: 3.6: 3.6: 3.8: 4.0: 4.6; scape globose, glabrous, antennomere II small, globose, glabrous, antennomere III small, slightly longer than wide, glabrous, antennomeres II and III together distinctly shorter than antennomere IV, antennomere IV–X elongate, slightly serrate, median antennomeres V–VIII about 3.0–3.3 times as long as wide, apical antennomere simple, apically slightly narrowed.

Pronotum ( Fig. 7E View FIGURE 7 ) transverse, about 1.45 times as wide as long (0.80 mm long, 1.20 mm wide), slightly convex, widest at posterior angles. Anterior margin almost straight, sides bisinuate, posterior margin trisinuate, medially widely emarginate; anterior angles almost rectangular; posterior angles very shortly projected posterolaterally, slightly narrowly rounded; surface of disc uneven, irregularly and coarsely punctate, punctation sparser on glabrous protuberances around middle and at basal half, denser around margins, punctures usually almost contiguous, punctures usually round to ovoid, moderately deep; moderately densely covered with long, suberect to erected setae, denser at posterior angles. Prosternum transverse, before procoxae 2.7 times wider than long, prosternal process relatively short and stout. Scutellar shield small, slightly wider than long, apically rounded, dorsally convex, covered with fine punctures, and greyish suberect to erected setae, setae distinctly shorter than those on pronotum and elytra.

Elytra ( Fig. 2C View FIGURE 2 ) somewhat shiny, elongate, about 4.6 times as long as pronotum, together 2.0 times as long as wide (3.75 mm long, 1.85 mm wide), subparallel-sided for about 3/4 of their length, then gradually narrowed towards apex, slightly narrower at humeri, widest at about 2/3, apically somewhat truncate; apices conjointly rounded; surface ( Fig. 10C View FIGURE 10 ) rather smooth, moderately densely punctate, punctures arranged in rows, fine, small, round, intervals between punctures within row usually about 1.5–3.0 times puncture diameter; intervals between punctures of different rows usually 2.0–3.0 puncture diameter; surface moderately densely covered with relatively long, suberect, yellowish to reddish light brown setae, which are oriented backwards. Leg ( Fig. 2C View FIGURE 2 ) slender, femur widest mesally, tibia elongate, longer than femur, covered with long setae, denser and thicker apically, with pair of short, thin apical spurs, sparsely covered with long setae; tarsus shorter than tibia; tarsomere I elongate, simple; tarsomeres 2–4 gradually shorter, ventrally with elongate lamellae; tarsomere V slender, simple, longest and distinctly narrower than remaining tarsomeres; pretarsal claws wide basally, then abruptly narrowed, slightly curved.

Abdomen with ventrite 1 shorter than remaining ventrites, with distinct intercoxal process, ventrites 2–4 roughly subequal in length, ventrite 5 about 1.5 times as long as ventrite 4, apically widely rounded; each ventrite with circular smooth elevation near lateral margins; surface finely and very sparsely punctate on ventrites 1–4, very slightly denser on ventrite 5, with moderately long suberect, yellowish pubescence, longer on ventrite 5. Sternite VIII ( Fig. 11C View FIGURE 11 ) roughly pentagonal, about as long as wide, medially membranous, apically widely rounded. Tergite IX ( Fig. 11K View FIGURE 11 ) with base medially roundly emarginate, laterally with short apodemes, apico-medially triangularly and deeply emarginate; surface covered with short setae. Sternite IX ( Fig. 11G View FIGURE 11 ) elongate-subovate, about 3 times as long as wide, base with slender elongate apodemes laterally, sides subparallel at basal 2/3, apex covered with short setae. Tergite X ( Fig. 11K View FIGURE 11 ) about 1.3 times as long as wide, deeply nested in and connected by membrane with tergite IX, apically rounded; surface covered with short setae, mainly apically.

Aedeagus ( Fig. 12C View FIGURE 12 ) about 2.7 times as long as wide; median lobe (without struts) about 4.3 times as long as wide, robust, with sides subparallel for most of their length, only slightly curved basally, basal width almost equal to middle width, subapically abruptly narrowed towards apex, apically narrowly rounded; basal struts short, less than 1/5 of median lobe length; parameres elongate, not reaching apex of median lobe, apically partly membranous; junction of parameres connected by thin process to transverse basal sclerite which is dorsally attached to basal portions of parameres.

Female. Body ( Fig. 2D View FIGURE 2 ) 4.50–5.60 mm long, 2.45–2.60 times as long as wide. Similar to male except for the following characters: minimum interocular distance 1.70–1.75 times maximum eye width; antenna ( Fig. 6F View FIGURE 6 ) not reaching half of elytral length, about 0.75 times as long as elytral length, ratio of antennomere lengths = 1.5: 1.0: 1.1–1.2: 1.8–1.9: 2.1–2.3: 2.1–2.3: 2.1–2.3: 2.1–2.3: 2.1–2.3: 2.1–2.3: 2.7–2.9; antennomeres shorter and thicker; pronotum ( Fig. 7F View FIGURE 7 ) relatively wider, about 1.40 times as wide as long, convex medially; elytra ( Fig. 2D View FIGURE 2 ) together 1.9–2.0 times as long as wide, somewhat rounded at apical third. Abdominal sternite VIII ( Fig. 13G View FIGURE 13 ) partly membranous, approximately 1.8 times as wide as long (without spiculum), with sides straight, gradually narrowed towards apex; apex somewhat widely rounded, surface finely punctate and covered with sparse pubescence, mainly at margins and apex; spiculum slender, about 4.7 times sternite length. Ovipositor ( Fig. 13H,I View FIGURE 13 ) elongate; paraprocts approximately 2.3 times as long as gonocoxites; short styli attached to gonocoxites apically. Bursa copulatrix ( Fig. 13H View FIGURE 13 ) membranous, sac-like, with large slightly sclerotized inner structures.

Immature stages unknown.

Etymology. The species is dedicated to Jan Růžička (Praha, Czech Republic), a specialist on Silphinae and Leiodidae , who accompanied one of us (JH) on many collecting trips to China. The specific epithet is a noun in the genitive singular.

Collection circumstances. The holotype and one paratype were collected from short vegetation on mountain pasture ( Fig. 14 View FIGURE 14 ).

Distribution. This species is so far known only from the type locality in Haba Xueshan mountain, northern Yunnan, China ( Fig. 15 View FIGURE 15 ).