Heterocoelia punctulata Wang & He & Chen 2024, comb. nov.
Creators: name: Wang, Chunhong
name: He, Junhua
name: Chen, Xuexin
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Bethylidae
Heterocoelia
Heterocoelia punctulata

description: Heterocoelia punctulata (Xu, He & Terayama, 2003) comb. nov.
Fig. 4
Sulcomesitius punctulata Xu, He & Terayama, 2003: 323, 326–328.
Material examined
Holotype
CHINA – Fujian • ♀; Zhangzhou; Apr. 1987; Naiquan Lin leg.; ZJUH 984787.
Other material (4 ♀♀)
CHINA – Fujian • 1 ♀; Fuzhou, Jinshan; Apr. 1987; Naiquan Lin leg.; ZJUH 202300001 • 1 ♀; Shouning; 14 Jul. 1987; Changming Liu leg.; ZJUH 9611394 • 1 ♀; Fuzhou; 13 Aug. 1989; Changming Liu leg.; ZJUH 966313 • 1 ♀; Fuzhou; 14 Aug. 1990; Changming Liu leg.; ZJUH 966320.
Re-description
Female
MEASUREMENTS (n = 5). Body length 5.42–6.88 mm; fore wing length 2.85–3.20 mm; LH 1.06–1.08 × WH; WF 1.42–1.57× LE; LE 1.35–1.43× DEV; POL 1.22–1.34× AOL; OOL 0.90–1.04× WOT; median length of pronotum 0.48–0.53 × its width along posterior margin; median length of dorsal surface of MPC 0.71–0.83 × its half-width; length of PPP 0.68–0.72× median length of dorsal surface of MPC.
COLOURATION. Black. Mandible brown; maxillary and labial palpi brown, lighter ventrally. Antenna black; scape, pedicel and flagellomeres I–II brown. Legs brown, procoxa partly dark brown. Fore wing hyaline, brown with longitudinal colourless band medially; veins yellowish brown to brown, pterostigma yellowish brown. Posterior margin of T 1–2 and S2–3, apical half of T 3 and metasomal segments 4–7 yellowish brown.
PUBESCENCE. Body with short, dense light yellowish-brown setae. Antenna with dense appressed setae, sparser on scape (Fig. 4C). Eye with sparse erect setae, 3.0× diameter of an ommatidium. Wings with short, dense brown setae. Setae of metasoma longer than setae on head and mesosoma; T 1 with setae laterally, T 2 with basal glabrous triangular area dorsally.
HEAD. Longer than wide, LH 1.06 × WH. Mandible with four apical teeth, ventralmost one longest. Clypeus trilobite; medio-clypeal lobe with anterior margin slightly acute medially (Fig. 4B); medio-clypeal carina present, not extending into frons, arched in lateral view. Antenna thickened, ratio between length and width of flagellomeres IV–VII are 0.87, 0.71, 0.78 and 0.95 respectively; pedicel shorter than flagellomere I, length of pedicel 0.74 × length of flagellomere I. Frons coriaceous and densely foveolate; WF 1.57 × LE (Fig. 4B). Contour of eye protruding in antero-dorsal view (Fig. 4B); LE 0.36 × LH; LE 1.35 × DEV. Anterior ocellus crossing imaginary top line of eyes in antero-dorsal view; POL 1.23 × AOL, OOL 1.04 × WOT, DPV 2.73 × DAO. Vertex coriaceous and densely foveolate; sides of head behind eyes rounded, vertex crest protruding; occipital carina complete. Gena coriaceous and densely foveolate; medioccipito-genal suture and hypostomal sulcus present.
MESOSOMA. Dorsal pronotal area coriaceous and densely foveolate, median length 0.53 × width along posterior pronotal margin (Fig. 4D); anterolateral corner weakly angled; median pronotal sulcus foveolate; lateral pronotal area obliquely striate; cervical pronotal area coarse. Mesoscutum distinctly elevated on apical two-thirds, coriaceous with dense punctures; median mesonotal sulcus absent, only impressed on apical half (Fig. 4E); notauli complete and converging posteriorly; parapsidal signum shallow, absent near anterior margin. Mesoscutellum coriaceous with dense punctures; mesoscutum-mesoscutellar sulcus present, laterally dilated (Fig. 4E); medio-longitudinal sulcus absent. Dorsal surface of MPC elevated; median length of dorsal surface of MPC 0.78 × its half-width; metapostnotum strongly areolate, metapostnotal median carina complete (Fig. 4E); metapostnotal-propodeal carina distinctly oblique anteriorly and converging posteriorly; dorsal propodeal area transversely striate; paraspiracular and lateral marginal carinae of MPC complete, lateral marginal carina nearly straight; PPP long, 0.69 × median length of dorsal surface of MPC, not bent upward in dorsal view; transverse posterior carina of MPC complete; propodeal declivity areolate, median and lateral carinae complete; anterior metapleural area transversely striate; lateral surface of MPC irregularly striate, areolate near submarginal carina of MPC. Propleuron coriaceous. Mesopleuron coriaceous, densely foveolate; subalar impression present; posterior oblique sulcus of mesopleuron present and foveolate; postepicnemial sulcus weak.
WINGS. Fore wing with 2r-rs&Rs 2 v slightly curved apically; posterior margin of pterostigma straight, prestigma absent (Fig. 4G); Cu 2 v nebulous. Hind wing with three distal hamuli, distance between 1 st and 2 nd hamuli longer than distance between 2 nd and 3 rd hamuli.
METASOMA. Metasomal terga shiny with punctures; T 1 with sparse punctures, medio-longitudinal sulcus present at basal one-third; T 2 with dense punctures, coriaceous basally (Fig. 4F); T 3–4 basal half coriaceous. Metasomal sterna shiny with variably sized punctures; S1 irregularly striate.
Male
Unknown.
Distribution
China (Fujian) (Fig. 20).
Remarks
The examination of the holotype of S. punctulata Xu, He & Terayama, 2003 as well as other specimens showed that the mesoscutum is only impressed near the posterior margin rather than having a median mesonotal sulcus, and the antenna is sometimes remarkably thickened medially, which are the main diagnostic features of female Sulcomesitius. Females of Heterocoelia, however, have at most the mesoscutum shallowly and broadly impressed (Móczár 1984), the antenna slightly thickened and the pronotal median sulcus weak. Therefore, we transfer S. punctulata from the genus Sulcomesitius to the genus Heterocoelia.
description: Published as part of Wang, Chunhong, He, Junhua & Chen, Xuexin, 2024, Revision of subfamily Mesitiinae (Hymenoptera, Bethylidae) from China, pp. 1-61 in European Journal of Taxonomy 960 (1) on pages 11-14, DOI: 10.5852/ejt.2024.960.2679, http://zenodo.org/record/13941658