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Table 2 Evolutionary trends of key characters for Ommatidae

From: New fossil species of ommatids (Coleoptera: Archostemata) from the Middle Mesozoic of China illuminating the phylogeny of Ommatidae

  Characters Pronotocupedini Notocupedini Lithocupedini Brochocoleini Ommatini Tetraphalerini
1 Pentagonal enlarged window punctures along elytral suture present absent absent absent absent absent
2 Ratio of length of 3rd and 4th segments of antenna equal in length equal in length 3rd longer than 4th antennomere 3rd longer than 4th antennomere 3rd longer than 4th antennomere 3rd longer than 4th antennomere
3 Size of window punctures enlarged, separated by very distinct rib-like ridges present present absent absent absent absent
4 Abdominal ventrites overlapping on fore border of next overlapping on fore border of next overlapping on fore border of next flat flat flat
5 Gular sutures complete complete complete incomplete incomplete absent
6 Epipleural rim one row of cells one row of cells one row of cells more than one row of cells one row of cells one row of cells
7 Median epicranial suture on the dorsal head surface present present present present absent present
8 The ventral head surface with lateral antennal grooves absent absent absent absent absent present