Embolemidae (Forster, 1856)

Mita, Toshiharu & Olmi, Massimo, 2018, Taxonomic additions of Embolemidae and Sclerogibbidae (Hymenoptera: Chrysidoidea) from Japan, with description of a new species of Trogloembolemus, Zootaxa 4497 (4), pp. 586-592 : 589

Key to females of Japanese Embolemidae (modified from Olmi et al. 2014a)

1. Macropterous.......................................................................... Ampulicomorpha : 2

- Micropterous......................................................................................... 3

2. Metapostnotum with three longitudinal keels............................................... A. viator Mita & Olmi

- Metapostnotum with two longitudinal keels........................................ A. thauma Rasnitsyn & Matveev

3. Head fusiform ( Figs 7 , 9 ); eye strongly reduced ( Fig. 6 ); mesoscutellum narrow, alutaceous, trapezoidal, with shorter base posterior ( Fig. 9 ); metanotum reduced to narrow longitudinal carina forming a bridge upon the first region of metapostnotum ( Fig. 9 )................................................................................... Trogloembolemus : 4

- Head not fusiform ( Fig. 10 ); eye normal size; mesoscutellum subcircular ( Fig. 10 ); metanotum short and transverse................................................................................................. Embolemus : 5

4. Mesoscutum ovoidal, as long as wide; metapostnotum not rugose.................... T. fujiei Olmi, Mita & Guglielmino

- Mesoscutum transverse, wider than long; metapostnotum rugose................................... T. okanoi sp. nov.

5. Anterior surface of metapostnotum shiny, weakly granulated, not rugose.............................................................................................................. E. honshuensis Olmi, Mita & Guglielmino

- Anterior surface of metapostnotum dull, rugose.............................................................. 6

6. Metapostnotum with median depression situated at border between anterior and posterior surface............................................................................................................ E. walkeri Richards

- Metapostnotum without such depression..................................................... E. krombeini Olmi

Figures

FIGURES 5–8. Trogloembolemus okanoi, sp. nov., holotype ♀. 5, lateral habitus; 6, head, lateral view; 7, head and mesosoma, dorsal view; 8, metapectal-propodeal complex. Scale = 1 mm.

FIGURES 9–10. Head and mesosoma in dorsal view. 9, Trogloembolemus okanoi sp. nov., holotype ♀; 10, Embolemus walkeri, ♀ from Tochigi Prefecture, Japan.