Metopiinae Forster 1869
Creators: name: Ranjith, A. P.
name: Priyadarsanan, Dharma Rajan
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae

description: Key to the Indo-Australian genera of Metopiinae
1. Face generally flat, with a large shield-shaped region bounded by a carina (Fig. 1a); mid tibia with one apical spur ............................................................................................... Metopius Panzer, 1806
– Face entirely convex, lacking a shield-shaped region bounded by a carina (Fig. 1b); number of mid tibial spurs variable ........................................................................................................................... 2
2. Metasomal tergites 3–5 without laterotergites (Fig. 2a) ................................................................... 3
– Metasomal tergites 3–5 with laterotergites (Fig. 2b) ........................................................................ 5
3. Areolet present (Fig. 3a); metasoma clavate, fifth and sixth segments much wider than preceding segments (Fig. 3b); mid tibia of male with one spur (Fig. 3c) .................. Acerataspis Uchida, 1934
– Areolet absent (Fig. 3d); metasoma parallel sided, fifth and sixth segments not wider than preceding segments (Fig. 3e); mid tibia of male with two spurs (Fig. 3f) ........................................................ 4
4. Mesopleuron with sulcus (Fig. 4a); lateral longitudinal carina only present on metasomal tergite 1 and base of second metasomal tergite (Fig. 4b); pronotum with dorsal longitudinal depression (Fig. 4c) ................................................................................................. Chorinaeus Holmgren, 1858
– Mesopleuron without sulcus (Fig. 4d); lateral longitudinal carina often present on metasomal tergites 1–3 (Fig. 4e); pronotum without dorsal longitudinal depression (Fig. 4f) ...... Trieces Townes, 1946
5. Interantennal process of face connected dorso-posteriorly to a high lamella separating the antennal sockets, this lamella with a vertical groove in it, just below the median ocellus (Fig. 5a) .............. 6
– Interantennal process of face not produced dorsally into a lamellate structure separating the antennal sockets, but often present as a low lamella posterior to antennal bases (Fig. 5b) ............................ 7
6. First metasomal segment petiolate anteriorly, its spiracle near or posterior to centre (Fig. 6a); sternite 1 long, reaching more than half of length of tergite (Fig. 6b); mandible with teeth subequal (Fig. 6c) ............................................................................................... Colpotrochia Holmgren, 1856
– First metasomal segment weakly to quite strongly (and evenly) tapered anteriorly, its spiracle near its anterior ⅓ (Fig. 6d); first metasomal sternite short, at most reaching about ⅓ of length of tergite (Fig. 6e); mandible with lower tooth much shorter than upper tooth (Fig. 6f) ................................... ........................................................................................................................ Triclistus Förster, 1869
7. Pronotum with upper part inflated, the pronotal lobes appear as large triangular structures in dorsal view (Fig. 7a); upper tooth of mandible broadly lobate, lower tooth acute and turned upwards (Fig. 7b); interantennal process separated from upper face by a sharp transverse carina (Fig. 7c) .... .................................................................................................. Stethoncus Townes & Townes, 1959
– Pronotum with upper part not exceptionally inflated (Fig. 7d); upper tooth of mandible triangular and acutely pointed, the lower tooth generally small and always straight (Fig. 7e); interantennal process never separated from upper face by a carina (Fig. 7f) ......................................................... 8
8. Areolet present (Fig. 8a) ................................................................................................................... 9
– Areolet absent (Fig. 8b) ...................................................................................................................11
9. Occipital carina entirely absent (Fig. 9a) ............................................ Carria Schmiedeknecht, 1924
– Occipital carina present at least laterally (Fig. 9b) ......................................................................... 10
10. Notaulus present (Fig. 10a); first metasomal tergite distinctly narrowing basally (Fig. 10b) ............ .................................................................................................................... Sciron Fitton, 1984 (part)
– Notaulus absent (Fig. 10c); first metasomal tergite broad basally (Fig. 10d) ..................................... .................................................................................................................... Seticornuta Morely, 1913
11. Mid tibia with outer spur distinctly shorter than inner spur (Fig. 11a) ........................................... 12
– Mid tibia with outer spur as long as inner spur (Fig. 11b) .............................................................. 13
12. Occiput vertical (Fig. 12a); posterior transverse carina of mesosternum convexly bulging medioposteriorly (Fig. 12b); first metasomal tergite with distinct lateromedian carina often extending 0.8× of tergite (Fig. 12c) .......................................................................... Hypsicera Latreille, 1829 (part)
– Occiput rounded to steeply declivous (Fig. 12d); posterior transverse carina of mesosternum straight medio-posteriorly (Fig. 12e); first metasomal tergite without or with lateromedian carina, if present extending 0.5 × of tergite (Fig. 12f) ....................................................... Exochus Gravenhorst, 1829
13. Notaulus present (Fig. 13a); first metasomal tergite narrowing basally (Fig. 13b) ............................ .................................................................................................................... Sciron Fitton, 1984 (part)
– Notaulus absent (Fig. 13c); first metasomal tergite not narrowing basally (Fig. 13d) ................... 14
14. Propodeum without traces of carina (Fig. 14a); first metasomal tergite without carina (Fig. 14b); epicnemial carina largely incomplete or absent dorsolaterally (Fig. 14c) ................ Soliga gen. nov.
– Propodeum with distinct carina (Fig. 14e); first metasomal tergite with longitudinal carina (Fig. 14f); epicnemial carina complete (Fig. 14d) ........................................................................................... 15
15. Propodeum without anterior transverse carina (Fig. 15a); at least anterior ⅓ of second metasomal tergite with distinct longitudinal carina (Fig. 15b) .......................... Drepanoctonus Pfankuch, 1911
– Propodeum with anterior transverse carina (Fig. 15c); second metasomal tergite without distinct longitudinal carina (Fig. 15d) ......................................................................................................... 16
16. Occiput vertical (Fig. 16a); metasomal tergite 2 with wide laterotergite (Fig. 16b) .......................... .......................................................................................................... Hypsicera Latreille, 1829 (part)
– Occiput roundly sloping (Fig. 16c); metasomal tergite 2 with narrow laterotergite (Fig. 16d) ......... ............................................................................................... Macromalon Townes & Townes, 1959
description: Published as part of Ranjith, A. P. & Priyadarsanan, Dharma Rajan, 2022, A new Darwin wasp genus, Soliga (Hymenoptera: Ichneumonidae: Metopiinae), from India, pp. 57-76 in European Journal of Taxonomy 852 (1) on pages 59-66, DOI: 10.5852/ejt.2022.852.2009, http://zenodo.org/record/7448070