Zimankos hamulosus, 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 : 53-56

Zimankos hamulosus sp. nov.

urn:lsid:zoobank.org:act:92E51160-3B20-4E76-9E16-47014EB1FD77

Fig. 18

Diagnosis

This new species is similar to Z. cambodianus in having the PPP with the apical margin rounded in lateral view. However, it can be distinguished from the latter by having the hind wing with five distal hamuli (four in Z. cambodianus ).

Etymology

The specific epithet is derived from the hamuli (‘ hamulus ’ is Latin for ‘small hook’), because members of this species have five distal hamuli on the hind wing.

Material examined

Holotype

CHINA – Zhejiang • ♂; Longquan, Fengyang Mountain ; 4 Aug. 2008; Jingxian Liu leg.; ZJUH 200801198 .

Description

Male

MEASUREMENTS. Body length 5.48 mm. Length of forewing 3.26 mm.

COLOURATION. Body black. Mandible yellowish brown, teeth brown. Antenna brown, darker apically. Fore wing hyaline, brown; veins and pterostigma dark brown. Legs dark brown, trochanters, femora apically and tibiae brown, tarsi yellowish brown. Lateral and posterior margin of T2 brown; apical half of T3 and T4–5 brown.

PUBESCENCE. Body with short setae. Maxillary and labial palpi with dense, short setae. Antenna with short setae, length of setae 0.19× width of flagellomere II ( Fig. 18C ). Eye with sparse, short setae, nearly 5.0× diameter of an ommatidium. Wings with short, dense brown setae. Setae of metasoma longer than setae of head and mesosoma, T1 nearly glabrous, T2 with basal triangular area glabrous.

HEAD. Shorter than wide, LH 0.95 × WH. Clypeus trilobite, medio-clypeal lobe with apical margin acute medially; medio-clypeal carina not extending into frons, arched in lateral view. Antenna slender. Frons coriaceous and densely foveolate, median frontal line weak ( Fig. 18B ); WF 1.54 × LE. Contour of eye protruding in antero-dorsal view ( Fig. 18B ); LE 0.41× LH; LE 1.41 × DEV. Anterior ocellus partly anterior to imaginary top line of eyes; POL 1.57 × AOL, OOL 0.85 × WOT, DPV 1.56 × DAO. Vertex coriaceous and densely foveolate, sides of head behind eyes nearly parallel, vertex crest protruding. Gena coriaceous, densely foveolate, with shallow foveolae ventrally. Occipital carina complete. Medioccipito-genal suture present.

MESOSOMA. Dorsal pronotal area coriaceous and densely foveolate, median length 0.46 × width along posterior pronotal margin, anterolateral corner angled; median pronotal sulcus nearly complete ( Fig. 18D ); lateral pronotal area obliquely striate; cervical pronotal area coarse. Mesoscutum elevated, coriaceous with dense punctures; median mesonotal sulcus present on apical one-third and foveolate ( Fig. 18E ); notauli complete and converging posteriorly, parapsidal signum absent near anterior margin. Mesoscutellum elevated, coriaceous and foveolate; mesoscutum-mesoscutellar sulcus arched, laterally slightly dilated ( Fig. 18E ). Median length of dorsal surface of MPC 0.95× half-width; metapostnotum strongly areolate, metapostnotal median carina complete, metapostnotal-propodeal carina complete and converging posteriorly ( Fig. 18F ); dorsal propodeal area transversely striate; paraspiracular and lateral marginal carinae of MPC complete; length of PPP 0.32× median length of dorsal surface of MPC ( Fig. 18F ); transverse posterior carina of MPC complete; propodeal declivity areolate, median and lateral carinae complete; anterior metapleural area shiny, weakly striate; lateral surface of MPC obliquely striate, submarginal and posterior carinae present. Mesopleuron coriaceous and densely foveolate; subalar impression weak; posterior oblique sulcus of mesopleuron present and foveolate; postepicnemial sulcus present; ventral surface of mesopleuron coriaceous and shallowly foveolate; anterior mesofurcal pit present and deep.

WINGS. Fore wing with 2r-rs&Rs 2 v slightly curved apically; posterior margin of pterostigma straight, prestigma absent ( Fig. 18H ); Cu 2 v present as light yellowish-brown trace. Hind wing with five hamuli.

METASOMA. Metasomal terga shiny, with punctures; T1 with shiny, sparse punctures, medio-longitudinal sulcus present at basal one-third; T2 with dense punctures. Metasomal sterna shiny, with variably sized punctures ( Fig. 18G ); S1 irregularly striate, metapostnotal median carina weak; S2 with dense, variably sized punctures. Hypopygium longer than wide, length 2.1 × its width; lateral and anterior margin of basal part of hypopygium distinctly incurved ( Fig. 18I ); posterior branches 0.48× length of hypopygium, distinctly narrower than median notch; apical margin of posterior branches and bottom of posterior median notch with long setae.

MALE GENITALIA. Harpe bilobate, dorsal harpe filamentary ( Fig. 18J ), ventral harpe finger-like, with long setae ( Fig. 18K ). Cuspis with apical margin incurved; digitus bent and papillate apically, with setae basally; aedeagus bottle-shaped ( Fig. 18J ).

Female

Unknown.

Distribution

China (Zhejiang) ( Fig. 20 ).

Figures

Fig. 18. Zimankos hamulosus sp. nov., holotype, ♂ (ZJUH 200801198). A. Habitus, lateral view. B. Head, antero-dorsal view. C. Antenna. D. Pronotum, dorsal view. E. Mesonotum, dorsal view. F. MPC, dorsal view. G. T2, dorsal view. H. Fore wing. I. Hypopygium. J. Genitalia, dorsal view. K. Genitalia, ventral view. Scale bars: 0.20 mm.

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