 
1. Wings
well developed …2
 
- Wingless or wings small
and subequal in size to tegula
...3
2. Body and
legs metallic blue; pronotum dorso-ventrally flattened
…
Anachrysis
Krombein
- Body matt black, legs yellow; pronotum normal
…
New genus
 
3. Propodeum with posterolateral
slender spines … Mahinda Krombein
 
- Propodeum without spines
...4
 
4. Abdomen petiolate,
petiole formed by constriction of anterior one-quarter to one-sixth of
segment 1 ...5
 
- Abdomen sessile … 6
5. Abdominal petiole
one-sixth as long as whole segment I; without macrochaetae on head and
mesosoma; pronotum not unusually thickened posteriorly; propodeum with 2
decumbent submedial teeth on posterior margin …
Leptosega
Krombein
- Abdominal petiole
one-quarter as long as segment I; with macrochaetae on head and thorax;
pronotal posterior margin thickened; propodeum simple posteriorly
…Afrosega
Krombein
6. Dorsal
mesosoma with confluent punctures arranged in longitudinal rows; apical
margin of metanotum not extending to apex of dorsal mesosoma, the
propodeum with a definite dorsal surface along midline; femora beneath
and tibiae above with long, erect scattered setae; upper part of head
with coarse, confluent punctures …
Alieniscus Benoit
 
- Dorsal mesosoma with
small scattered punctures, or finely lineate; apex of metanotum medially
coinciding with apex of dorsal mesosoma, the propodeum without a dorsal
surface along midline; femora beneath and tibiae above without erect
setae; upper part of head with small separated punctures … 7
7. Flagellum
short and fusiform; pronotal length medially 2.0-2.5X metanotal length;
scapal basin with a few strong transverse rugae; dorsal mesosoma finely
and closely longitudinally lineate …
Reidia Krombein
 
- Flagellum
filiform; pronotal length medially less than 1.5X metanotal length;
scapal basin with numerous arched transverse ridges; dorsal mesosoma
with fine shagreening and scattered fine punctures …
Obenbergerella
Bridwell
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