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24. Scape exceeding vertex in profile (a1) and propodeum (b1) less than 1.75x broader than long--medial length nearly always about equal to width at widest point (ie: length along median carina vs. width at anterior-most point of propodeum, shown by arrows). Flagellum (a1) with 4 or 5 funicular segments.

many Hemiptarsenus Westwood, 1833

24'. Scape seldom exceeding vertex (a few species of Sympiesis, Pnigalio, possibly others), but if so then propodeum more than 2x broader than long (bb1). Flagellum sometimes with 3 funicular segments (cc1).

couplet 25

a1 b1
hemiptarsenus_scape.JPG (19226 bytes) hemiptarsenus_dorskey.JPG (37160 bytes)

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bb1 cc1
sympiesis_con_prop.JPG (26196 bytes) eulophine 3seg.JPG (6597 bytes)

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Image credits: bb1: Miller (1970). cc1: Erdös (1951).