Eurypogon pubescens Packova & Hájek & Geiser & Kundrata 2024, sp. nov.
Creators: name: Packova, Gabriela
name: Hájek, Jiří
name: Geiser, Michael
name: Kundrata, Robin
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Artematopodidae
Eurypogon
Eurypogon pubescens

description: Eurypogon pubescens sp. nov.
(Figs 2A, B; 6C, D; 7C, D; 10B; 11B, F, J; 12B; 13D–F)
Type locality. China, Shaanxi province, Qinling Shan Mts., 6 km E of Xunyangba, ca. 33°32′N 108°36′E.
Type material. Holotype male (NHMB), labeled: “ China, 1000–1300m, Shaanxi, Qinling mts, Xunyangba (6 km E), 23.v.–13.vi. 1998, I. H. Marshal leg.” // “ HOLOTYPE m#, EURYPOGON, pubescens sp. nov., Packova et al. det. 2024 [red label]”. Paratypes (6 males, 12 females): 2 males, 10 females, same data as for the holotype (NHMB, 1 male, 1 female NMPC); 2 males, 1 female: “ China, 1150–1300m, Shaanxi, Qinling mts, Foping (6 km N), 20.–21. vi. 1998, I. H. Marshal leg.” (NHMB); 1 male, [transliterated from Chinese]: “ Shaanxi, Ningshan, Huoditang, 1580–1650m, 26. VI. 1999, Decheng Yuan leg. // IOZ(E) 1065663” (IZCAS); 1 male, [transliterated from Chinese]: “ Shaanxi, Ningshan, Huoditang forest farm, alt.: 1538m, 2. VI. 2007, Meiying Lin leg. // IOZ(E) 1065664” (IZCAS); 1 female, [transliterated from Chinese]: “ Shaanxi, Ningshan, Huoditang, alt.: 1600–2000m, 8. VI. 2008, Junzhi Cui leg. // IOZ(E) 1065662” (IZCAS). 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. 2A,B) more or less uniformly dark brown to blackish, male elytra up to 2.1–2.2 times as long as wide, female elytra 2.0 times as long as wide; elytral surface (Fig. 10B) relatively rough, elytral punctures coarse, large, intervals between elytral punctures within single row usually less than a puncture diameter; intervals between elytral punctures of different rows usually about a puncture diameter; aedeagus (Fig. 12B) without U-shaped phallobase, parameres short, reaching about 3/5 of median lobe.
Description. Holotype, male. Body(Fig. 2A) 4.40 mm long, 2.60 times as long as wide.Body coloration blackish, with mouthparts, antennae and legs paler, reddish brown to dark brown; part of scape and whole antennomeres II and III, and basal portion of tibia reddish brown, apical tarsomere yellowish to light reddish brown.
Head (Fig. 7C) with surface of frons and clypeus sparsely and irregularly covered with medium-sized punctures; punctures round to ovoid, denser on vertex, each puncture medially with long, suberect pale yellowish seta oriented more or less frontally. Minimum interocular distance 1.55 times maximum eye width. Maxillary palpus about twice as long as labial palpus, apical palpomere elongate hatchet-like, widest subapically, apically obliquely rounded. Antenna (Fig. 6C) relatively long, slender, reaching after half of elytral length, antenna about 0.8 times as long as elytral length; ratio of antennomere lengths = 1.4: 1.0: 1.0: 2.1: 2.4: 2.6: 2.8: 2.8: 2.8: 2.8: 3.4; scape subglobose, antennomeres II–III small, subglobose, subequal in length, antennomere III somewhat narrower than antennomere II, antennomeres II–III narrower than antennomere IV, antennomeres IV–X elongate, slightly serrate, median antennomeres V–VIII about 2.5 times as long as wide, apical antennomere longest, narrow, simple, apically abruptly narrowed.
Pronotum (Fig. 7C) about 1.60 times as wide as long (0.8 mm long, 1.3 mm wide), widest at posterior angles. Anterior margin almost straight to slightly rounded, sides strongly bisinuate, posterior margin shallowly trisinuate, slightly emarginate medially; anterior angles almost rectangular; posterior angles strongly projected posterolaterally, sharp, apically narrowly rounded; surface of disc uneven, with irregular tubercles and depressions, irregularly and coarsely punctate, with few small glabrous areas; punctures almost contiguous or separated by up to 1/3 of puncture diameter, large, mostly round, somewhat shallow; each medially with long, suberect, yellowish to light brown seta. Prosternum transverse, before procoxae 2.9 times wider than long, prosternal process relatively short and stout. Scutellar shield slightly wider than long, dorsally slightly convex, apically widely rounded, very densely covered with fine punctures and suberect to erect pale yellowish setae, setae shorter and paler than those on pronotum and elytra.
Elytra (Fig. 2A) elongate, 4.70 times as long as pronotum, together 2.20 times as long as wide (3.6 mm long, 1.7 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. 10B) relatively rough, densely punctate, punctures arranged in rows, large, deep, much deeper than those on pronotum, intervals between punctures within row usually less than 1.0 times puncture diameter, intervals between punctures of different rows usually about 1.0 puncture diameter; surface very densely covered with rather long, suberect, light brown to reddish light brown setae oriented backwards. Leg (Fig. 2A) 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 II–IV 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 edges, less apparent on ventrite 1; 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. 11B) roughly pentagonal, about as long as wide, medially membranous, apically narrowly rounded. Tergite IX (Fig. 11J) with base medially roundly emarginate, laterally with short apodemes, apically triangularly and deeply emarginate; surface covered with short setae. Sternite IX (Fig. 11F) elongate-subovate, about 2.9 times as long as wide, base with slender elongate apodemes laterally, apex covered with moderately long setae. Tergite X (Fig. 11J) about 1.6 times as long as wide, deeply nested in and connected by membrane with tergite IX, apically narrowly rounded; surface covered with short setae, mainly subapically and apically.
Aedeagus (Fig. 12B) about 3.0 times as long as wide; median lobe (without struts) about 4.8 times as long as wide, moderately robust, with sides gradually narrowed towards apex, apically narrowly rounded; basal struts short, about 1/5 of median lobe length; parameres reaching about 3/5 of median lobe.
Female. Similar to male except for the following characters: body (Fig. 2B) more robust, widest at the apical third of elytra; minimum interocular distance 1.80–2.05 times maximum eye width; antenna (Fig. 6D) reaching about half of elytral length and about 0.75–0.80 times as long as elytral length, ratio of antennomere lengths = 1.5– 1.6: 1.0: 1.0: 1.9–2.1: 1.9–2.2: 2.0–2.3: 2.1–2.4: 2.1–2.4: 2.1–2.4: 2.2–2.5: 2.7–3.2; antennomeres relatively shorter, median antennomeres V–VIII about 2.5 times as long as wide; pronotum (Fig. 7D) about 1.45–1.55 times as wide as long, with sides medially less constricted; elytra together about 2.0 times as long as wide, somewhat rounded at apical third. Abdominal sternite VIII (Fig. 13D) partly membranous, approximately 1.65 times as wide as long (without spiculum), with sides rounded; apex somewhat truncate; surface finely punctate and covered with sparse pubescence, mainly at margins and apex; spiculum slender, about 3.9 times sternite length. Ovipositor (Fig. 13E,F) elongate; paraprocts approximately 1.8 times as long as gonocoxites; short styli attached to gonocoxites apically. Bursa copulatrix (Fig. 13E) membranous, sac-like, without any strongly sclerotized inner structures.
Immature stages unknown.
Variability. Males 4.20–4.40 mm long, 2.50–2.65 times as long as wide, females 4.00– 4.60 mm long, 2.40–2.50 times as long as wide. Minimum interocular distance 1.6–1.8 times maximum eye width. Pronotum about 1.45–1.60 times as wide as long. Elytra 4.30–4.70 times as long as pronotum, together 2.0–2.2 times as long as wide. Aedeagal median lobe slightly differ in the shape; it is either gradually narrowed towards apex without any major medial constriction as in the holotype (Fig. 12B) or more or less constricted medially as in the paratypes.
Etymology. Latin adjective pubescens means hairy and refers to the long semi-erect body pubescence of the new species.
Distribution. The species is known from several localities in relatively small area in central Qinling Shan mountains, southern Shaanxi province, China (Fig. 15).
description: Published as part of 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, pp. 451-479 in Zootaxa 5437 (4) on pages 460-468, DOI: 10.11646/zootaxa.5437.4.1, http://zenodo.org/record/10985256