Heterocoelia neomoczari (Barbosa & Azevedo, 2018 ) Wang & He & Chen, 2024

Wang, Chunhong, He, Junhua & Chen, Xuexin, 2024, Revision of subfamily Mesitiinae (Hymenoptera, Bethylidae) from China, European Journal of Taxonomy 960 (1), pp. 1-61 : 9-11

Heterocoelia neomoczari (Barbosa & Azevedo, 2018) comb. nov.

Fig. 3

Sulcomesitius moczari Xu, He & Terayama, 2003: 328–329 .

Sulcomesitius neomoczari Barbosa & Azevedo, 2018: 206 (replacement name for S. moczari Xu, He & Terayama, 2003 nec Gorbatovsky, 1995).

Material examined

Holotype

CHINA – Shandong • ♂; Laoshan ; 5 Aug. 1995; Ping Cai leg.; ZJUH 958428 .

Re-description

Male

MEASUREMENTS. Body length 3.61 mm. Fore wing length 2.22 mm.

COLOURATION. Black. Mandible brown, teeth yellowish brown; maxillary and labial palpi brown. Antenna brown, scape blackish brown. Wings hyaline; fore wing light brown, veins and pterostigma light brown. Legs dark brown, tarsi yellowish brown. Metasomal segments black with posterior margin brown.

PUBESCENCE. Body with short setae, denser on ventral surface. Antenna with short suberect setae, length of setae one-third width of flagellomere ( Fig. 3C ). Eye with sparse, short setae, nearly 4.0 × diameter of an ommatidium. Wings with short, dense brown setae. Legs with dense, short setae. Metasoma with sparse setae; T 1 with setae laterally, T 2 with basal glabrous triangular area dorsally.

HEAD. Length equal to width, LH 1.01 × WH. Clypeus trilobite, medio-clypeal lobe with anterior margin slightly acute medially ( Fig. 3B ); medio-clypeal carina present, not extending into frons, arched in lateral view. Antenna thin, flagellomeres cylindrical, length of flagellomere III 1.69 × length of flagellomere II. Frons coriaceous and densely foveolate, frontal line shallow and extending to anterior ocellus ( Fig. 3B ); WF 1.69 × LE. Contour of eye protruding in antero-dorsal view ( Fig. 3B ); LE 1.16 × DEV. Anterior ocellus partly anterior to imaginary top line of eyes in antero-dorsal view; POL 1.57× AOL, OOL 1.03× WOT, DPV 1.63 × DAO. Vertex coriaceous and densely foveolate, sides of head behind eyes rounded, vertex crest protruding. Gena coriaceous and densely foveolate, ventral surface coriaceous; medioccipito-genal suture present. Occipital carina complete; occiput coriaceous.

MESOSOMA. Dorsal pronotal area coriaceous and densely foveolate, median length 0.49 × width along posterior pronotal margin; anterolateral corner rounded; median pronotal sulcus foveolate ( Fig. 3D ); lateral pronotal area areolate; cervical pronotal area coarse. Mesoscutum coriaceous with punctures, elevated posteriorly; median mesonotal sulcus absent ( Fig. 3D ); notauli complete and converging posteriorly ( Fig. 3D ); parapsidal signum shallow, absent near anterior margin. Mesoscutellum coriaceous and sparsely foveolate ( Fig. 3D ); mesoscutum-mesoscutellar sulcus present, laterally dilated ( Fig. 3D ); medio-longitudinal sulcus absent. Dorsal surface of MPC elevated; median length of dorsal surface of MPC 1.16× its half-width; metapostnotum strongly areolate, metapostnotal median carina complete ( Fig. 3E ); metapostnotal-propodeal carina complete, distinctly oblique anteriorly and converging posteriorly; dorsal propodeal area striate; paraspiracular and lateral marginal carinae of MPC complete; PPP present, 0.19 × median length of dorsal surface of MPC ( Fig. 3E ); transverse posterior carina of MPC complete; propodeal declivity areolate, median and lateral carinae complete; lateral surface of MPC areolate. Propleuron coriaceous, propleural epicoxal sulcus foveolate. Mesopleuron coriaceous and densely foveolate, posterior area transversely striate; subalar impression present; posterior oblique sulcus of mesopleuron foveolate; postepicnemial sulcus present; ventral surface coriaceous, foveolate near mesocoxa; anterior mesofurcal pit present.

WINGS. Fore wing with 2r-rs&Rs 2 v slightly curved apically; posterior margin of pterostigma straight ( Fig. 3G ); 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 tiny sparse punctures, medio-longitudinal sulcus present at basal one-third; T 2 with punctures ( Fig. 3F ); T 3–4 coriaceous basally. Metasomal sterna shiny, with variably sized punctures; S1 irregularly striate, metapostnotal median carina weak. Length of hypopygium 1.84× its width; anterior margin incurved ( Fig. 3H ); posterior margin bilobate, posterior branches broad and short with long setae, length of posterior branches 0.14 × length of hypopygium.

MALE GENITALIA. Harpe bilobate, dorsal harpe S-shaped ( Fig. 3I ); ventral harpe broader than dorsal harpe, with long setae apically ( Fig. 3J ). Cuspis bilobate with long setae; digitus bent and papillate apically, with setae basally; aedeagus bottle-shaped ( Fig. 3I ).

Female

Unknown.

Distribution

China (Shandong) ( Fig. 20 ).

Remarks

This species was included in the genus Sulcomesitius by Xu et al. (2003) because it has the anterior corners of the clypeus obtuse laterally. However, the generic identification of the males is primarily based on the shape of the hypopygium ( Argaman 2003; Azevedo et al. 2018). We examined the types of this species and transfer it from Sulcomesitius to Heterocoelia because it has the hypopygium longer than wide with the posterior branches 0.14 × the length of the hypopygium, the dorsal harpe narrower than the ventral harpe and the antennal setae short.

Figures

Fig. 3. Heterocoelia neomoczari (Barbosa & Azevedo, 2018), holotype, ♂ (ZJUH 958428). A. Habitus, lateral view. B. Head, antero-dorsal view. C. Antenna. D. Pronotum and mesonotum, dorsal view. E. MPC, dorsal view. F. T2, dorsal view. G. Fore wing. H. Hypopygium. I. Genitalia, dorsal view. J. Genitalia, ventral view. Scale bars: A, C–J = 0.20 mm; B = 0.10 mm.

Fig. 20. Distribution map of species of Mestiinae from China.