Megacampsomeris formosensis chinensis Betrem, 1941

Taylor, Christopher & Barthélémy, Christophe, 2021, A review of the digger wasps (Insecta: Hymenoptera: Scoliidae) of Hong Kong, with description of one new species and a key to known species, European Journal of Taxonomy 786 (1), pp. 1-92 : 13-14

publication ID	https://doi.org/ 10.5852/ejt.2021.786.1607
publication LSID	lsid:zoobank.org:pub:B9A13F3D-9383-4319-90B2-F59A66071601
DOI	https://doi.org/10.5281/zenodo.5846260
persistent identifier	https://treatment.plazi.org/id/F41087BA-744F-FF9C-6DC9-FE70FCE5FEEE
treatment provided by	Felipe
scientific name	Megacampsomeris formosensis chinensis Betrem, 1941
status

Treatment

Figs 1A–B View Fig , 7C View Fig , 9D View Fig , 11C View Fig , 13D View Fig , 15C View Fig , 17D View Fig , 19C View Fig , 21D View Fig , 23C View Fig , 25D View Fig , 27C View Fig , 29D View Fig , 31C View Fig , 33D View Fig , 35C View Fig , 37D View Fig , 39D View Fig , 40D View Fig , 41D View Fig , 42D View Fig

Campsomeris (Megacampsomeris) formosensis chinensis Betrem, 1941: 73–74 (holotype HMS, ♀, type locality = Zhenjiang, China).

Material examined

CHINA – Hong Kong • 1 ♂; Mang Kung Wo ; 22°22′06″ N, 114°15′12″ E; alt. 60 m; 18 Oct. 2020; C. Barthélémy leg.; hand net, ref.: 0721.A.Hy.1 ; CBC GoogleMaps • 1 ♀; same collection data as for preceding; 13–26 Sep. 2020; Malaise trap, ref.: M515.C.Hy.1 ; CBC GoogleMaps .

Description

Female

STANDARD RATIOS (n = 1). L: 17.1 mm; CR: 1.15; OOR: 0.57; CLR: 0.47; MER: 1.21; OMR: 0.96; FRR: 1.86; MSR: 0.76; TER: 1.54.

HEAD. Head densely punctate near lateral margins of clypeus, on frontal spatium and lower part of frons including ocular sinuses ( Fig. 15C View Fig ), impunctate in front of median ocellus, a row of large puncture in an arc behind lateral ocelli, median dorsal area of vertex impunctate, lateral and declivous area of vertex heavily punctate ( Fig. 19C View Fig ).

MESOSOMA. Mesoscutum, with large punctures laterally and on frontal half (diameter of punctures larger than distance between them) and a large rectangular impunctate area in the centre ( Fig. 23C View Fig ); scutellum with a large impunctate area centrally, punctate laterally ( Fig. 27C View Fig ); metanotum punctate medially, impunctate laterally; dorsomedian area of propodeum heavily punctate (diameter of punctures larger than distance between them) ( Fig. 27C View Fig ). Mesopleuron and metapleuron minutely punctate on all surfaces (punctures so small that surfaces seem smooth); metapleuron with evanescent carina separating upper and lower panels. Scutellum and metanotum without median longitudinal carina ( Fig. 27C View Fig ). Dorsomedian area of propodeum without distinct tubercule medially ( Fig. 27C View Fig ).

METASOMA. Metasoma with no division between anterior and ventral faces of S 2 in lateral view; tergites broadly punctate, denser punctures apically ( Figs 31C View Fig , 35C View Fig ); T2 with basal elevation (gradulus) distinct ( Fig. 35C View Fig ).

WINGS. Fore wings with two submarginal cells and two recurrent veins, the second recurrent vein reaching the submarginal cell. Fore wing with a few short setae in the anterior part of the first submarginal cell.

COLOUR AND VESTITURE. Integument entirely black ( Fig. 7C View Fig ), expect tegulae dark yellow ( Fig. 23C View Fig ) and T1 and T2 with evanescent yellow maculae on lateroapical sides ( Fig. 35C View Fig ). Vestiture light yellow/ orange, densely erect on dorsum of pronotum, posterior side of vertex and frons, long erect yellow/ orange setae on lateral sides of mesoscutum and median surface of metanotum, vestiture black on T5

and T6 ( Fig. 7C View Fig ). Wings mostly yellowish, with no maculae apically on fore wing, first marginal cell of fore wing bearing minute setae distally.

Male

STANDARD RATIOS (n = 1). Genitalia were dissected and total length not acquired; CR = 1.13; OOR = 2.0; CLR: 0.64; MER: 1.40; OMR: 1.0; FRR: 1.52; MSR: 0.79; TER: 1.42.

HEAD. Head with clypeus impunctate on the medial basal part, bearing large spaced punctures above and near lateral margins, clypeus with long sparse pale setae ( Fig. 17D View Fig ); frontal spatium densely punctate, punctures separated by less than their diameter; frons moderately punctate, punctures separated by more than their diameter, impunctate on the area between hind ocelli and eyes ( Fig. 21D View Fig ); vertex heavily punctate, punctures separated by less than their diameter ( Fig. 21D View Fig ); frontal spatium well defined; frontal fissura absent.

MESOSOMA. Dorsum of pronotum and mesoscutum bearing numerous small punctures separated by more than their diameter ( Fig. 25D View Fig ), becoming less dense posteriorly on mesoscutum; scutellum moderately punctate, becoming less dense posteriorly and towards lateral margins ( Fig. 25D View Fig ); metanotum with dense punctures ( Fig. 29D View Fig ); posterior margin of metanotum slightly raised medially ( Fig. 25D View Fig ); propodeum dorsomedian and dorsolateral areas densely punctate, punctures separated by less than their own diameter ( Fig. 29D View Fig ). Lateral panels of mesosoma, including mesopleuron and metapleuron with punctures mostly obscured by dense appressed pile. Scutellum and metanotum with evanescent median longitudinal carina ( Fig. 29D View Fig ). Dorso-median area of propodeum without distinct tubercule medially ( Fig. 29D View Fig ).

METASOMA. Tergites moderately and uniformly punctate ( Figs 33D View Fig , 37D View Fig ). S1 with large punctures, except V-shaped area posteriorly. T2 with no basal elevation (gradulus) ( Fig. 37D View Fig ).

WINGS. Same as female but, fore wing with numerous short setae in the anterior half

COLOUR AND VESTITURE. Integument mostly black except the following yellow ( Figs 9D View Fig , 13D View Fig ): clypeus, basal part of scape, base of mandibles ( Fig. 17D View Fig ), scapulae, anterior part of tegula, small spots on posteriolateral area of mesoscutum and scutellum ( Fig. 25D View Fig ); anterior panels of coxae of fore legs, ventral part of fore, mid and hind femurs, ventral part of fore and mid tibiae; metasoma with broad apical yellow bands on T1–T4 ( Figs 33D View Fig , 37D View Fig ), and medially interrupted apical yellow bands on S2–S4 ( Fig. 33D View Fig ). Vestiture pale yellow on entire body except black on metasomal segments 5–7 ( Fig. 9D View Fig ); vestiture on metasoma mostly noticeably long and decumbent ( Fig. 37D View Fig ). Wings yellowish.

GENITALIA. Ventral side of paramere bearing a few setae on inner margin ( Fig. 40D View Fig ), dorsal side with dense long setae on most of its surface ( Fig. 39D View Fig ); volsella and cuspis volsellaris with dense setae on entire surfaces ( Figs 40D View Fig , 42D View Fig ); volsella bearing numerous sensory cones on its external margin ( Fig. 42D View Fig ) and a lamella on its inner margin ( Fig. 39D View Fig ). External margin of paramere moderately angled medially and subrounded apically, serrated margin substraight, convex basally ( Fig. 42D View Fig ).

Distribution ( Fig. 1A–B View Fig )

China (Anhui, Fujian, * Hong Kong, Hubei, Hunan, Jiangsu, Zhejiang). [ Betrem 1928, 1941; Wang 1992; Liu et al. 2021b].

Notes

This taxon was omitted from Osten’s (2005) list. It differs from the nominotypical subspecies in the metasomal vestiture which is uniformly reddish brown in Megacampsomeris formosensis formosensis Betrem, 1928 ( Betrem 1941) . Liu et al. (2021b) also noted potential differences between the subspecies in the relative lengths of the hind tarsomeres and in the pilosity of the spiracular angles, but felt that further research on their distinction was required.