Micromeriella marginella marginella (KIug, 1810)

Pham, Phong Huy & van Achterberg, Cornelis, 2023, Taxonomic study of the tribe Campsomerini (Hymenoptera, Scoliidae) from northern Vietnam, with the description of a new species and a checklist of Vietnamese scoliid wasps, Deutsche Entomologische Zeitschrift 70 (2), pp. 369-385 : 369

Micromeriella marginella marginella (KIug, 1810)

Fig. 4A-C

Scolia marginella Klug, 1810: 214.

Elis (Campsomeris) hirsuta de Saussure, 1858: 234.

Elis (Dielis) hirsuta de Saussure: Saussure and Sichel 1864: 216.

Elis (Dielis) marginella (KIug): de Saussure and Sichel 1864: 186.

Scolia hirsuta (de Saussure): Dalla Torre 1897: 163.

Campsomeris (Campsomeris) marginella marginella (Klug): Betrem 1928: 135.

Campsomeris (Campsomeriella) marginella marginella (Klug): Betrem 1941: 90.

Campsomeris (Micromeris) marginella marginella (Klug): Bradley and Betrem 1968: 329.

Micromeriella marginella (Klug): Betrem and Bradley 1972: 119.

Micromeriella marginella marginella (Klug): Bradley 1974: 443.

Specimens examined.

Vietnam: Ha Noi: 1 ♂, Lien Mac, Bac Tu Liem , 27.viii.2017, Coll. Phong Huy Pham ; 1 ♂, Long Bien , 12.xii.2015, Coll. Phong Huy Pham. Thai Binh: 2 ♂♂, Hong Minh, Hung Ha , 10.vii.2017, Coll. Phong Huy Pham. Thanh Hoa: 2♂, Hai Tien, Hoang Hoa , 1.vi.2022, Coll. Phong Huy Pham.

Diagnosis.

Male. Body length 7-10 mm. Metasoma with faint blue reflections dorsally; flagellum brown; clypeus, except for large black spot medially, base of mandible (Fig. 4B ), scapula, tiny spot on callosity, small spot on tegula anteriorly, stripe on scutellum medially, small median spot on metanotum posteriorly, about one-third of anterior surface of fore coxa beneath, small stripe on apical half of all femora and outer surface of hind tibia, outer surface of fore and mid-tibiae, outer surface of fore tarsus and mid-basitarsus yellow; T1-T5 with apical yellow bands, that on T1, moderately emarginate anteromedially and covering about one-third of T1, those on T2-T4, conspicuously emarginate anteromedially and covering one-half of T2-T4, that on T5, not emarginate anteriorly (Fig. 4A ); S2-S4 with narrow apical yellow bands, that on S4, interrupted medially or reduced to spot posterolaterally; erect vestiture white, sparse on metasoma and moderately dense on head and mesosoma; two last metasomal segments with black setae; tomentum silvery, relatively sparse on head and side of mesosoma; wings hyaline; genitalia with paramere stout; base of volsella with sparse and long setae (Fig. 4C ).

Female. Unknown.

Distribution.

Vietnam (new record): Ha Noi, Thai Binh (Fig. 8E ). Elsewhere: China, India, Sri Lanka, Taiwan ( Betrem 1928; Gupta and Jonathan 2003; Liu et al. 2021a).

Micromeriella marginella is widely distributed in the Oriental region. The species ranges from Sri Lanka through India to Southeast Asia and also in China and Taiwan. There have been seven subspecies recorded for M. marginella , namely M. marginella marginella (Klug), M. m. bariensis (Tsuneki, 1972), M. m. billitonensis (Tullgren, 1904), M. m. formosana (Betrem, 1928), M. m. modesta (F. Smith, 1855), M. m. terinata (F. Smith, 1858) and M. m. thainana (Tsuneki, 1972). Osten (2005) did not recognise M. m. bariensis , M. m. billitonensis and M. m. thainana . The seven subspecies are distinguished by the difference in yellow marks on the body in males and by alteration of apical yellow bands on the metasomal terga in females. These characters are likely insufficient to retain the subspecies as valid taxa.

Figures

Figure 4. Micromeriella marginella marginella (KIug, 1810), male. A. Habitus, dorsal view; B. Head, frontal view; C. Genitalia, ventral view.

Figure 8. Distribution of the Scoliid species from northern Vietnam. A. Campsomeriella (Annulimeris) annulata annulata (Fabricius, 1793); B. Campsomeriella (Campsomeriella) collaris collaris (Fabricius, 1775); C. Campsomeriella (Campsomeriella) collaris quadrifasciata (Fabricius, 1798); D. Megacampsomeris shillongensis (Betrem, 1928); E. Micromeriella marginella marginella (KIug, 1810); F. Phalerimeris phalerata phalerata (de Saussure, 1858); G. Sericocampsomeris flavomaculata Gupta and Jonathan, 1989; H. Sericocampsomeris rubromaculata rubromaculata (Smith, 1855); I. Sericocampsomeris vietnamica Pham & van Achterberg, sp. nov.