Parancistrocerus elatitergus Qin, Chen, & Li 2023, sp. n.
Creators: name: Qin, Jiong
name: Chen, Bin
name: Li, Ting-Jing
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eumenidae
Parancistrocerus
Parancistrocerus elatitergus

description: Parancistrocerus elatitergus Qin, Chen, & Li sp. n.
Figs 8–14
Material examined. Holotype, ♀, China, Sichuan Province, Chongzhou City, Jiguanshan Village, 30°798′N, 103°388′E, 15.VIII.2018, Xue Zhang (CNU).
Diagnosis. This species is easily distinguished from other members of the genus by the following combination of characters: T2 (Figs 12–13) with a row of large, deep, and regular dense punctures close to margin, with strong preapical bulge, margin narrow and smooth, not prolonged medially, apex of T3 weakly sinuate (Fig. 12), that of S3 with broad median prolongation (Fig. 14).
Description. Female (Fig. 8): body length 6.60 mm. Body black, with sparse and short setae, with following parts yellow: clypeus except apex (Fig. 9), mandible at base, ventral side of scape, one spot in ocular sinus, interantennal spot on lower frons, a band on upper gena (Fig. 11), two large anterior connected spots on dorsal surface of pronotum (Fig. 11), two small lateral separated spots of scutellum, metanotum, tegula mostly except inner area, parategula entirely, tibiae largely (Fig. 8), apical bands on both T1–T4 and S2 (Figs 12, 14); fore wing brown and apex much darker, hind that relatively paler.
Head (Fig. 9). Slightly wider than long in frontal view, maximum width of head 1.09× its length; clypeus densely punctate, clypeal maximum width 1.07× its length, slightly convex, apex emarginate forming two lateral teeth, apical width 0.78× distance between antennal sockets; inter-antennal area with longitudinal carina; frons coarsely punctate and distinctly reticulate, punctures on vertex and gena similar to those of frons; POL 0.73× OOL (Fig. 11); distance between anterior and posterior ocelli 0.5× diameter of anterior ocellus; occipital carina complete (Fig. 11).
Mesosoma. Median sloping area of anterior face of pronotum obviously polished (Fig. 11), with two small and separated foveae medially; pronotal carina tapered dorsally; pronotum, mesoscutum and scutellum coarsely punctate, these punctures similar to those on vertex; median length of mesoscutum 1.01× its maximum width; metanotum with coarse punctures, interspaces carinate and sharp, minutely dentiform (Fig. 10); mesopleuron coarsely punctate and reticulated; epicnemial carina present but weak; metapleuron with few transverse striae; propodeum sloping downward just behind metanotum (Fig. 10), coarsely punctate, punctures large, shallow, flat bottomed and interspaces present as reticulated carinae, dorsal carina weak; posterior face of propodeum slightly concave, with median longitudinal carina, and a few thin and transverse striae; lateral face of propodeum densely with minute transverse striae.
Metasoma (Figs 12–14). Transverse carina of T1 almost absent medially, laterally present and weakly raised (Fig. 10); vertical anterior face shorter than dorsal horizontal one, dorsal face much wider than long, 1.83× its median length, coarsely punctate, punctures larger than those on mesoscutum, and without regular rows of punctures at yellow band; T2 short and wide, median length of T2 0.89× its maximum width (Fig. 12), moderately punctate, punctures obviously smaller than those of T1, T2 with a row of dense deep punctures close to margin, with strong preapical bulge, margin narrow and smooth, not prolonged medially (Fig. 12); S2 slightly convex basally, medially depressed and with a deep median longitudinal furrow (Figs. 13–14); T3 with a row of larger and sparser punctures close to margin than T2, apex of T3 weakly sinuate medially (Fig. 12), that of S3 with broad median prolongation (Fig. 14), apex of T4 apically with a row of sparse punctures similar to T3, and other metasomal segments normal.
Male. Unknown.
Distribution. China (Sichuan).
Etymology. The specific name elatitergus is derived from two Latin words: elatus (=raised) and tergum, referring to T2 having a strong preapical bulge.
description: Published as part of Qin, Jiong, Chen, Bin & Li, Ting-Jing, 2023, Additions to the knowledge of the genus Parancistrocerus Bequaert, 1925 from China (Hymenoptera: Vespidae: Eumeninae), pp. 345-357 in Zootaxa 5256 (4) on page 349, DOI: 10.11646/zootaxa.5256.4.3, http://zenodo.org/record/7755164