“…Those two genera share similar palpal structure, especially in having a cluster of setae antero-retrolateral to the bulb on cavity, the presence of tegular lobe, and the sclerotized
RCA ; however,
Epeus can be distinguished from
Plexippoides by the following: 1) the slender body, covered with sparse setae on carapace (for illustrations, see Metzner 2024 ), versus rather dumpy body, setose on carapace in
Plexippoides (
Logunov 2021 : figs 1, 6, 9, 14, 45, 50); 2) the most anterior margin of bulb cavity is far away from cymbial tip at least ca. one-third the cymbial length (for illustrations, see Metzner 2024 ), versus close to cymbial tip no more than one-third the cymbial length in
Plexippoides (Lougunov 2021: figs 17, 23, 28); 3) the weakly sclerotized copulatory ducts run posteriorly and form multi-loops (
Patoleta et al 2020 ), but sclerotized copulatory ducts do not form similar loops in
Plexippoides (
Logunov 2021 : figs 33, 37, 41).
P. guangxi and
P. dilucidus have slender bodies, and their most anterior margin of bulb cavity is far away from cymbial tip more than one-third the cymbial length (
Peng and Li 2002 : fig.…”