Perilampus ardens Yoo and Darling, 2021

Darling, D. Christopher & Yoo, Jeong, 2021, The Perilampidae of the United Arab Emirates and Yemen (Hymenoptera: Chalcidoidea), Zootaxa 5020 (1), pp. 101-129 : 106-109

publication ID	https://doi.org/ 10.11646/zootaxa.5020.1.5
publication LSID	lsid:zoobank.org:pub:9E9FBF89-8923-433D-AB91-DE67AFEF742F
DOI	https://doi.org/10.5281/zenodo.5223071
persistent identifier	https://treatment.plazi.org/id/D9AC8A4E-98D8-4127-89E5-5332D89B7A90
taxon LSID	lsid:zoobank.org:act:D9AC8A4E-98D8-4127-89E5-5332D89B7A90
treatment provided by	Plazi
scientific name	Perilampus ardens Yoo and Darling
status	sp. nov.

Treatment

Perilampus ardens Yoo and Darling n. sp.

Figures 2A‒C View FIGURE 2 , 3A, 3B View FIGURE 3 , Appendix 1

Material examined. Holotype. “ Yemen: Al Hudaydah, Zabid , 14°11'0"N, 43°18'0"E, Oct 2001, A van Harten; I Al Futayni, Light trap ”, “Digital Image Voucher 2019, Royal Ontario Museum”. The holotype is point-mounted (Female: ROME159196 View Materials , ROME). GoogleMaps

Paratype. Yemen: Abyan, Al Kowd , 13°5'0"N, 45°22'0"E: Jul-Sep 2001, A van Harten; S Al Haruri, Malaise trap (1 female: ROME159194 View Materials - EAD) GoogleMaps .

Etymology. The specific epithet ardens, Latin for fiery, is a reference to the red and yellow iridescent coloration on margin of the tubercle on the mesoscutum.

Description. Female. Length: approximately 2‒2.5 mm (HT 2.5 mm). Color: iridescent blue-green, metasoma brown with strong blue-green reflections; raised smooth scale on mesoscutum with bright red and yellow reflections; dorsellum iridescent blue-green. Legs: coxae brown with green reflections, pro- and mesofemora and tibiae brown to yellow, lighter distad and on inner surfaces, hind femora brown with weak blue-green reflections, tarsi brown. Antennae: scape brown with iridescence, pedicel brown, flagellum yellow.

Head ( Figs 2B, 2C View FIGURE 2 , 3A View FIGURE 3 ): in frontal view transverse, wider than high, HW/HH approximately 1.3, sparsely setose to smooth; in dorsal view weakly transverse, width slightly greater than twice length, HW/HL 2.1‒2.2; slightly wider than pronotum, HW/PW approximately 1.1‒1.2. Frontal carina: absent. Scrobal cavity ( Fig. 2B View FIGURE 2 ): shallow; with weakly swollen ridge with wrinkles originating from between median and lateral ocelli extended towards eye margin. Ocelli: large; forming a wide triangle, POL about twice distance between posterior and anterior ocelli; POL at least twice OOL. Vertex: rounded behind; ocellar margins weakly foveate, interocellar region with costulae recurved towards the anterior ocellus; occiput with median furrow extended along midline of vertex ( Fig. 2B View FIGURE 2 , arrow), with costulae. Outer orbits: smooth, strong costulae behind. Inner orbits: in lateral view, nearly parallel to inner eye margin; weakly foveate. Malar space: short, about 0.2× eye height, MS/EH approximately 0.2; malar sulcus distinct; with very shallow piliferous punctures. Clypeus ( Fig. 2C View FIGURE 2 ): strongly transverse, much wider than high, CW/ CH 2.1‒2.2, trapezoidal, lateral sulci weak and straight, strongly divergent; epistomal sulcus straight or weakly concave, deeper and more distinct than lateral sulci, only slightly extended ventrad, lower margin weakly convex. Supraclypeal area: subquadrate. Antenna: scape length approximately 0.6× EH; anellus subquadrate, length approximately 0.3× PL; F1 subquadrate, shorter or subequal in length to pedicel, F1L/PL approximately 0.6‒0.9, F2 subquadrate, F3‒F7 transverse; clava 4-segmented, with distinct terminal button.

Mesosoma ( Figs 2A View FIGURE 2 , 3A, 3B View FIGURE 3 ): length about 1.1× maximum width. Pronotum in dorsal view: short, about 0.25× length of mesoscutum, PN/MSC 0.2‒0.3; slightly shorter along midline, 0.7‒0.8× length laterad; anterior margin rounded; with flange on pronotal panel at the level of mesothoracic spiracle. Lateral panel of pronotum ( Fig. 3B View FIGURE 3 ): narrower than prepectus, LPP/PPT approximately 0.6; flat, with 2 rows of punctures with narrow interspaces, vantrad with narrow coriarious patch; anterior margin rounded; posterior margin ventrad nearly flat, with row of alveolae. Prepectus: broad; differentiated from pronotum, with distinct suture; ventral strap short ( Fig. 3B View FIGURE 3 , arrow), without row of alveolae; central area smooth, with foveae along dorsal and posterior margins. Femoral depression: weakly rugose, with foveae. Midlobe of mesoscutum ( Fig. 3A View FIGURE 3 ): with raised scale-like tubercle ( Fig. 3A View FIGURE 3 , arrow); punctures angulate, with narrow interspaces. Lateral lobe of mesoscutum: weakly rugulose dorsad; rugulose-punctate laterad. Scutellum ( Fig. 3A View FIGURE 3 ): about as long as mesoscutum, SC/MSC approximately 1.1; posterior margin smoothly rounded; with angulate punctures and narrow interspaces. Axilla: punctate dorsad, imbricate below. Axillula: wide triangular lobe, as long as width at base, smooth. Propodeum: length along midline about 0.3× width of propodeum; submedian area shagreened to smooth, with weak groove along median carina; alveolate-rugose laterad; without distinct lateral plicae, delimited ventrad by plicae, dorsad by transverse band of foveae; propodeal spiracle margin reticulate ventrad; nucha rugulose. Fore wing ( Fig. 2A View FIGURE 2 ): hyaline, with yellow venations; postmarginal vein long, 0.8‒0.9× length of marginal vein, approximately twice length of stigmal vein; stigmal vein rounded without uncus.

Metasoma ( Fig. 3A View FIGURE 3 ): petiole short and straplike, smooth, without raised scale; Gt2 smooth, posterior margin concave; Gt3 smooth.

Male: Unknown.

Diagnosis. Perilampus ardens can be distinguished from P. awbalus and P. seyrigi , by the following: transverse clypeus ( Fig. 2C View FIGURE 2 ), green-blue body coloration ( Figs 2A View FIGURE 2 , 3A View FIGURE 3 ), vertex rounded behind ( Fig. 2B View FIGURE 2 ), occiput with furrow extended along midline of vertex ( Fig. 2B View FIGURE 2 , arrow), higher scale-like tubercle on the midlobe of mesoscutum ( Fig. 3A View FIGURE 3 , arrow), narrower pronotum ( Fig. 3B View FIGURE 3 ), and smooth Gt3 ( Fig. 3A View FIGURE 3 ). Perilampus ardens is morphologically similar to P. auratus but can be distinguished by the convex clypeal margin ( Fig. 2C View FIGURE 2 ), red and yellow iridescent margin of the scale on the mesoscutum ( Fig. 3A View FIGURE 3 ) and the wrinkled edge of scrobal cavity ( Fig. 2B View FIGURE 2 ). See also Appendix 1, P. auratus and P. seyrigi .