Ecitonides, Wasmann, 1894

Shaw, Josh Jenkins, Rodríguez-Melgarejo, Maryzender, Matsumoto, Keita, Wasel, Sophia & Piper, Ross, 2023, A new species of Ecitonides Wasmann, 1894 (Coleoptera: Staphylinidae: Paederinae) from Peru and phylogenetic placement of the genus based on molecular data, Zootaxa 5346 (2), pp. 186-196 : 191-192

Key to species of Ecitonides

1 Head 2 times longer than wide........................................................................... 2

- Head more than 2 times longer than wide.................................................................. 8

2 (1) Sternites III-VI with large elongated tubercles.................................. E. soesilae ( Makhan 2021:24, fig. 2)

- Sternites III-VI without large elongated tubercles............................................................ 3

3 (2) Antennae longer than the head........................................................................... 4

- Antennae not longer than the head........................................................................ 7 4 (3) Head oblong. Elytron with 5 rows of tubercles.............................................................. 5

- Head increasing the width toward the posterior margin. Elytron with 4 rows of tubercles. Body length 5 mm .................................................................................. E. verrucosus (fig. 1 in Bruch, 1933:13).

5 (4) Antennae about 1.4x as long as head. Elytra 0.8x as long as pronotum. Body length 6 mm ................................................................................................... E. volans (fig. 1 in Assing, 2012: 403)

- Antennae about 2x as long as head. Elytra 1.3 x as long as pronotum............................................ 6

6 (5) Abdominal segments III–V with distinct tubercles. Body length 10 mm ...... E. spectabilis (fig. 1 in Borgmeier, 1932: 398)

- Abdominal segments III–V without distinct tubercles. Body length 10 mm ............. E. constanceae sp. nov. ( Figs. 1–3 )

7 (3) Antennomeres 7–10 strongly transverse. Tubercles present in tergites III-VI. Body length 5 mm ............. E. fraterculus

- Antennomeres 7–10 not transverse. Tubercles present only in tergite III. Body length 7 mm ....................................................................................... E. brevicornis (fig. 3 in Borgmeier, 1949: plate V)

8 (1) Head 3 times as long as wide. Body length 6 mm ........................... E. tuberculosus (fig. 10 in Bruch 1933: 16)

- Head 4 times as long as wide. Body length 7 mm ...................... E. longiceps (fig. 15 in Wasmann 1900: plate 14)

Figures

FIGURE 1. Ecitonides constanceae sp. nov. in dorsal (A) and ventral (B) view. Scale bar: 5.0 mm.

FIGURE 2. Morphological details of Ecitonides constanceae sp. nov. A. Close up of head in dorsal view. B. Close up of head in lateral view. C. Close up of pronotum. D. Drawing of labrum. E. Antenna. Scale bars: A–C, E = 1.0 mm; D = 0.5 mm.

FIGURE 3. Ecitonides constanceae sp. nov. A. Male sternite VIII. B. Aedeagus in dorsal view. C. Aedeagus in lateral view. Scale bar: 1.0 mm.