Erythropompilus venterisetalis Wu & Ma 2023, sp. nov.
Creators: name: Wu, Haiying
name: Li, Qiang
name: Ma, Li
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Pompilidae
Erythropompilus
Erythropompilus venterisetalis

description: Erythropompilus venterisetalis Wu & Ma, sp. nov.
Figs 1, 4 (A–C)
urn:lsid:zoobank.org:act: 10A825F9-9A88-49C2-BEB5-D9A44684CB96
Material examined. Holotype: CHINA, Yunnan, Xishuangbanna, Mengla, Xishuangbanna Tropical Botanical Garden, teak plantation, ♁, 21°54′N 101°16′E, 508 m, Malaise trap, 13.VII–13.VIII.2021, coll. Yong-sheng Pu (YNAU). Paratypes: CHINA, Yunnan, 13♁, same locality as holotype, 14.VII–14.VIII.2020 (5♁), coll. Yongsheng Pu, 24.IV–31.V.2019 (7♁), coll. Ling Zhao, 14.IX–14.X.2019 (1♁), coll. Ling Zhao; 2♁, Xishuangbanna Prefecture, Wild Elephant Valley, 22°6′N 100°51′E, 783 m, 15.VII.2016, coll. Qing-xia Zhou (YNAU).
Diagnosis. The male of the new species is similar to E. thailandensis Pitts & Shimizu, 2021 in having the following characteristics: body black, mesosoma partly orange-red (Figs 1A, 5A), clypeus as broad as LID (Figs 1D, 5D), mid and hind femora with small spines set in pits apicodorsally, and exposed portion of SGP flat, mostly parallel-sided (Fig. 1K); but markedly differs by the characters given in the Table 1.
Description. Male. (Measurements of the holotype are given in parentheses). Length: body 4.3–6.3 (5.8) mm; forewing 4.1–5.6 (4.6) mm. Body black; mandible reddish brown at apical 1/4, sometimes subapical yellow brown, basal of mandible with 2–5 (3) brown long setae (Fig. 1D); the following yellow brown to fulvous: palpi, scape, pedicel, F1–F4 beneath, apical 1/7 of fore femora ventrally, fore tibia ventrally, fore tarsus (Figs 1A, 1D); the following orange: posterior margin of pronotum, sides of mesoscutum and posterior margin, mesopleuron, scutellum, metanotum, postnotum, upper half of mesopleuron and posterior rim of propodeum (Figs 1A, 1E).
Head: Mandible with one inner tooth, clypeus slightly convex in lateral view, anterior margin nearly straight (Figs 1C, 1D). In frontal view, head 1.19–1.25 (1.25) × as broad as long; vertex slightly convex between eye tops, frontal line fine and inconspicuous; MID large, 0.58–0.62 (0.6) × as broad as TFD; UID: MID: LID = 8.0–9.0 (8): 10: 7.5–8.0 (7.5); clypeus 2.3–2.7 (2.5) × as broad as long, clypeus equal to LID (Fig. 1D). In dorsal view, ocellar area with several sparse punctures, ocelli in obtuse triangle, POD: OOD = 1: 0.7–0.8 (0.73); antennocular line distinctly inclined from antennal base toward eye (Fig. 1B); antenna pointed at apex, F1 2.5–3.1 (3) × as long as thick, 0.5–0.67 (0.61) × as long as UID, length ratios of scape, pedicel, F1–F3 = 11–12 (12): 4: 14–15(15): 15: 14–15 (15) (Figs 1G, 1H). In lateral view, gena short, 0.2–0.3 (0.2) × eye width (Fig. 1C).
Mesosoma: Lateral margin of pronotal dorsum, in dorsal view, slightly narrowing anteriorly, pronotum posterior margin slightly arcuate, and conspicuously shorter than mesoscutum (Fig. 1E); in dorsal view, mesoscutum slightly raised, notaulus fine and short anteriorly and medially, parapsidal sulcus reaching nearly 5/6 of mesoscutum; scutellum disc slightly raised, convex above level of mesoscutum; metanotum posterior margin extending at middle and covering postnotum partly; postnotum nearly 1/10 as long as metanotum, depressed medially and narrower than laterally; propodeum, in dorsal view, parallel-sided at anterior half, strongly narrowing at posterior half; in lateral view, gently convex, posterior slope at apical 1/3; propodeal enclosure irregularly reticulate-rugose, and with a pair of subparallel longitudinal carinae medially.
Wing: Pterostigma long, 5–6.5 (6) × as long as 2r-rs; marginal cell removed from wing tip by 0.4 × its own length; SMC2: SMC3 = 1: 1.3–1.6 (1.3) on vein M, 1: 0.4–0.6 (0.5) on vein RS, SMC2 broad on vein RS by 1: 0.9–1 (0.9) × its length on vein M, receiving crossvein 1m-cu at basal 0.35–0.55 (0.5); SMC3 narrowed on vein RS by 0.3–0.4 (0.4) × its length on vein M, receiving crossvein 2m-cu at basal 0.5–0.6 (0.55), removed from outer wing margin by 1.4–1.9 (1.5) × its own length. FW crossvein cu-a originating at or slightly beyond fork of vein M+CuA; HW crossvein cu-a arc-like, originating anterior to fork of vein M+CuA (fig. 1F).
Legs: Mid and hind femora with 1–2 small spines set in pits apicodorsally; mid tibia dorsally with 3–5 (5) stout brown spines externally and 1–3 (3) brown spines internally, mid tibia ventrally with 0–2 (0) small brown spines externally and 0–2 (1) small brown spines internally; hind tibia dorsally with 5–6 (6) stout brown spines externally and 4–5 (5) stout brown spines internally, hind tibia ventrally with 1–3 (2) small brown spines externally and 1–3 (2) small brown spines internally. Longer spur of hind tibia 0.68–0.72 (0.7) × hind tarsomere 1.
Metasoma: Side of S4 and S5, each with tuft of dense, erect and black bristles (Fig. 1J); S6 flat ventrally, posterior margin with arcuate emargination (Fig. 1I); S6 with long blade-like longitudinal keel medially, almost reaching posterior margin (Fig. 1I).
SGP and genitalia: SGP, in ventral view, exposed part broad and parallel-sided, translucent and rounded apically, basal sides with weak carina; in lateral view, SGP flat, slightly thickened basally and medially, and with sparse, oblique backward setae, subapically ones long (Fig. 1K). Paramere very short, oval-like (Fig. 4A); volsella narrow in basal 1/3, gradually broadened towards apex, rounded apically, with numerous long setae in apical 1/2 (Fig. 4B); parapenial lobe conspicuously extending apex of volsella, inner margin in apical 1/3 with fine and irregular serrate (Fig. 4C); aedeagus conspicuously longer than parapenial lobe, mostly parallel-sided, apical margin slightly emarginated medially (Fig. 4B).
Female. Unknown.
Distribution. China (Yunnan).
Etymology. The specific name venterisetalis originates from the Latin "venter" (=ventral) and "setalis" (=setae), referring to S4 and S5 of the male with a dense tuft of bristles on the sides.
description: Published as part of Wu, Haiying, Li, Qiang & Ma, Li, 2023, The spider wasp genus Erythropompilus Shimizu & Pitts, 2021 (Hymenoptera Pompilidae) in China, with description of two new species and an updated key to world species, pp. 160-172 in Zootaxa 5244 (2) on pages 162-164, DOI: 10.11646/zootaxa.5244.2.4, http://zenodo.org/record/7656174