Melikertini, ENGEL, 2001

ENGEL, MICHAEL S., 2001, A Monograph Of The Baltic Amber Bees And Evolution Of The Apoidea (Hymenoptera), Bulletin of the American Museum of Natural History 2001 (259), pp. 1-1 : 1-

Key to Genera of Melikertini

1. Clypeal protrusion absent (e.g., figs. 100, 105)............................ 2

– Clypeal protrusion present, i.e., base of clypeus produced into variously modified tubercles, tubercle bending upward over fronto­clypeal portion of epistomal sulcus and supraclypeal area, ending between antennal sockets (e.g., figs. 86–88, 93–98)........................ Succinapis , n. gen.

2. Scutellum bulging, overhanging metanotum and propodeum; apical margins of metasomal terga distinctly lighter than remain­ der of metasoma, thus metasoma appears banded; anterior and posterior margins of metabasitarus distinctly converging toward apex (fig. 107).................... 3

– Scutellum not bulging, not overhanging metanotum or propodeum (fig. 101); metasomal terga uniformly colored; anterior and posterior margins of metabasitarsus approximately parallel (fig. 102)............................ Melikertes Engel

3. Anterior margin of first submarginal cell inside marginal cell approximately equal to length of anterior margin of second submarginal cell inside marginal cell (i.e., vein r­rs as long as immediately succeeding abscissa of Rs) (fig. 109); basal vein confluent with cu­a; compound eyes converging below (fig. 105); F2 distinctly shorter than F3, F1 distinctly shorter than combined lengths of F2–3 (fig. 105)..................................... Melissites , n. gen.

– Anterior margin of first submarginal cell inside marginal cell many times longer than length of anterior margin of second submarginal cell inside marginal cell (i.e., vein r­rs many times longer than immediately succeeding abscissa of Rs); basal vein confluent with cu­a; compound eyes approximately parallel; F2 approximately equal in length to F3, F1 approximately equal to combined lengths of F2–3.............................. Roussyana Manning