1. Fore wing with a closed areolet (A); black and orange species,
wings infuscate (A, B) ...Megarhyssa babaulti Seyrig, 1937
- Fore wing without an areolet (a); species yellow with
black markings, or black and white, or orange overall, wings usually
hyaline, if orange and black then infuscate wings with white apical
oval window (b) ...Epirhyssa ...2
2.
Subalar prominence with a lateral flange (A, B) ...Epirhyssa
uelensis Benoit, 1951
- Subalar prominence without a lateral flange (a, b) ...3
3. Dorsal margin of mesopleuron with a raised flange (A) ...4
- Dorsal margin of mesopleuron without a raised flange (a, b) ...5
4.
Apical horn of metasoma shaped like an ellipse in posterior view
(A); frons with median carinae that converge before the ocelli,
frons with lateral carinae (B); red, yellow, and black species ...Epirhyssa
overlaeti Seyrig, 1937
- Apical horn of metasoma shaped like a half-ellipse in posterior
view (a); frons with median carinae that diverge before continuing
towards the lateral ocelli, frons without lateral carinae (b);
orange species, sometimes with black markings ...Epirhyssa
ghesquierei Benoit, 1951
5. Epicnemial carina laterally absent, does not reach
mesopleuron
(A, B) ...6
- Epicnemial carina present on mesopleuron (a,
b)
...7
6.
Frons with median carinae that diverge before continuing towards the
lateral ocelli (A); yellow species with black on metasoma (B) ...Epirhyssa migratoria Seyrig, 1932
- Frons smooth, without median carinae (a); predominantly
orange species (b) ...Epirhyssa johanna Hopkins, 2019
7.
Frons with median carinae that diverge before continuing towards the
lateral ocelli (A); frons with lateral carinae (A); black and orange
species with infuscate wings (B) ...Epirhyssa
villemantae Rousse & van Noort, 2014
- Frons with median carinae that converge
before the ocelli or without median carinae (a, b); frons without
lateral carinae (a, b) ...8
8.
Tergite 3 densely striate (A); frons striate but without median
carinae (B); black, white and orange species ...Epirhyssa quagga
Hopkins, Roininen, van Noort, Broad, Kaunisto & Sääksjärvi, 2019
- Tergite 3 mostly smooth (a), or mostly punctate (b); frons with median
carinae (c) ...9
9.
Tergite 3 mostly smooth (A, B) ...10
- Tergite 3 mostly punctate over 50% of surface (a, b)
...11
10.
Epicnemial carina only just reaches the mesopleuron (a); hypostomal
carina raised into a low flange(b); yellow-orange species with yellow
and infuscate wings ...Epirhyssa
maynei Benoit, 1952
- Epicnemial carina long, reaches the approximate height of the
mesopleural pit (a); hypostomal carina raised into an elevated
flange(b); yellow species with black mesosternum
...Epirhyssa leroyi Benoit, 1951
11.
Hypostomal carina raised into an elevated flange (A); black and
white species (B) ...Epirhyssa brianfisheri Rousse & van Noort,
2014
- Hypostomal carina raised into a low flange (a, b); yellow and
black species ...12
12. Apical horn of metasoma shaped like a half-ellipse in posterior
view (A); yellow species with black markings as in (B) ...Epirhyssa tombeaodiba Rousse & van Noort, 2014
- Apical horn of metasoma shaped like an ellipse with medial septum in posterior view
(a); pale yellow species with black markings as in (b) ...Epirhyssa
shaka Rousse & van Noort, 2014
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