Figure 1.
View of Lucensosergia lucens at fish market, Suruga Bay, Japan (A), Deosergestes sp. (B) and Robustosergia robusta (C) from midwater of the North Atlantic.
Table 1.
Type material with ZMUC identification numbers used in the studies.
Table 2.
Names of old and new taxa within Sergestes sensu Hansen (1903; 1919) [4], [13].
Figure 2.
General morphological characters: rostrum (A–D), carapace (E–F), ocular papilla (F), peduncle of Antenna I (G).
Figure 3.
General morphological characters: scaphocerite (A–C), maxilliped III (D–E), ischium of pereopod I (F), ischium and merus of pereopod II (G), chelae of pereopod II (H, I), chelae of pereopod III (J, K).
Figure 4.
Morphological characters: uropodal exopod (A) and male clasping organ (B–E).
Figure 5.
General morphology of petasma: Deosergestes (A), Allosergestes (B), Cornutosergestes (C), Eusergestes (D), and Sergestes (E).
Figure 6.
General morphology of petasma: Challengerosergia (A), Lucensosergia (B), Gardinerosergia (C), Sergia (D), and Robustosergia (E).
Figure 7.
Dermal photophores: carapace of Prehensilosergia (A), carapace of Challengerosergia (B), scaphocerite of Phorcosergia (C), uropodal exopod of Phorcosergia (D), scaphocerite of Gardinerosergia (E), uropodal exopod of Gardinerosergia (F), scaphocerite of Challengerosergia (G), uropodal exopod of Challengerosergia (H).
Table 3.
List of morphological characters and their states.
Figure 8.
The strict consensus tree, principal clades (black, in circles) and their Bremer support (red) and Bootstrap support (blue).
Table 4.
List of the clades with most important supporting characters shown divided into major character systems (non-sexual, sexual, and photophore synapomorphies).
Figure 9.
Distribution of clades within principal oceanic biotopes.
Figure 10.
Geographical distribution of clades.
Table 5.
Species ranges of considered genera.
Figure 11.
Distribution of photophore types in the clades.
Figure 12.
Distribution of selected characters in the clades.