Neanastatinae, Kalina, 1984

Gibson, Gary, 2009, Description of three new genera and four new species of Neanastatinae (Hymenoptera, Eupelmidae) from Baltic amber, with discussion of their relationships to extant taxa, ZooKeys 20 (20), pp. 175-214 : 185-187

Key to Genera of Neanastatinae

1 Acropleuron differentiated by uniformly developed crenulate sulcus curved to anterodorsal margin of pleuron near apex of prepectus (Figs 51, 60: acs); pronotum strongly transverse in dorsal view (Figs 49, 59: no 1) and almost vertical in lateral view (Figs 51, 60: no 1) [extinct] ....................................... 2

− Acropleuron differentiated by linear sulcus extended anteriorly to level at least in line with apex of tegula where obliterate (Figs 22, 24: acs) or extended dorsally as less distinct, posteriorly curved furrow or line to anterodorsal margin of pleuron near middle of prepectus (Fig. 41: acs); pronotum elongatesubtriangular in dorsal view (Figs 1–4, 27, 39: no 1) and with extensive dorsal surface in lateral view (Figs 19, 21) [extinct or extant] ................................ 3

2(1) Head with occipital carina (Fig. 59: oc); axillae distinguished from scutellum by linear scutoscutellar sutures (Fig. 59: sss) and with inner angles separated by distance equal to about half own width; scutellum not carinate laterally (Fig. 59); fore wing with bare band separated from parastigma by setal region about equal in width to bare band (Fig. 62: spc); mesoscutum undifferentiated, lacking parapsidal ridges (Fig. 59) ................... Neanaperiallus gen. n.

− Head without occipital carina; axillae distinguished from scutellum by crenulate scutoscutellar sutures (Fig. 49: sss) and with contiguous inner angles; scutellum with carina extending along side from apex of axilla (Fig. 49: scc); fore wing with bare band contiguous with parastigma (Fig. 50: spc); mesoscutum differentiated into median and lateral regions by longitudinal, posteriorly ridged parapsidal lines (Figs 49, 51: psr) ............... Aspidopleura gen. n.

3(1) Scutellum divided mediolongitudinally (Figs 4, 17, 18); axillae with inner angles separated by at least twice own width (Figs 4, 17); head lenticular with vertex and temples carinately margined relative to occiput; fore wing with linea calva extending to base of wing along anal margin (Fig. 7: lc); flagellum with basal segment ring-like and with 5 distinct funicular segments ............. .................................................................................... Neanastatus Girault

− Scutellum undivided (Figs 1–3); axillae with inner angles contiguous (Figs 2, 3, 13, 15) or at most separated by distance about equal to own width (Figs 1, 11); head ovoid with vertex and temples smoothly rounded into occiput or only vertex carinately margined (Fig. 23); fore wing either entirely setose or with linea calva (Fig. 6: lc) extending only to basal cell; flagellum with or without differentiated ring segment, but with 7 or 8 distinct funicular segments .................................................................................... 4

4(3) Head and mesosoma patterned and at least partly yellowish to brown even if with some metallic luster (Fig. 1); scutellar-axillar complex with slightly divergent longitudinal grooves differentiating broadly separated quadrangular axillae on either side of anteriorly truncate scutellum (Figs 1, 11, 12); metanotum, propodeum and petiole all large and conspicuous regions posterior to scutellum (Figs 1, 11, 12); flagellum with 7 funicular segments..... .......................................................................................... Eopelma Gibson

− Head and mesosoma uniformly dark with variably distinct metallic luster (Figs 2, 3); scutellar-axillar complex with strongly divergent grooves differentiating triangular axillae on either side of anteriorly angulate scutellum (Figs 2, 3, 13, 15, 40); metanotum medially concealed or overlain by apex of scutellum and petiole an inconspicuous, almost linear transverse strip (Figs 14, 15: ptl); flagellum with 8 funicular segments ........................................ 5

5(4) Acropleuron separated from metapleuron by convex, deeply divided upper and lower mesepimeron (Fig. 20: uep, lep); scutellum with carina extending along side from apex of axilla (Figs 2, 14: scc); metanotum with dorsellum V- like protuberant under scutellar apex (Figs 13: dor, 14) ........... Metapelma Westwood

− Acropleuron extending completely to metapleuron (Figs 21, 41); scutellum without carina along side (Figs 3, 15, 39); metanotum with dorsellum transverse under apex of scutellum (Figs 15, 16, 40)........................................... 6

6(5) Mesoscutum with longitudinal parapsidal ridges differentiating elongate-rectangular median mesoscutal region from lateral regions (Fig. 39: psr); mesosternum without transepisternal sulcus (Fig. 41); hypopygium of female extending about half length of gaster (Fig. 35: hyp) [extinct] ............ Brevivulva gen. n.

− Mesoscutum not differentiated by ridged parapsidal lines (Figs 3, 21); mesosternum with transepisternal sulcus (cf. Figs 24, 26: tss); hypopygium of female extending almost to apex of gaster [extant] .............. Lambdobregma Gibson