Septemoecia, Angel & Brandåo, 2018

Angel, Martin V. & Brandåo, Simone N., 2018, Septemoecia a new genus of halocyprid ostracod (Myodocopa, Halocyprididae, Bathyconchoeciinae) for the seven-spined species formerly attributed to Bathyconchoecia, Zootaxa 4444 (5), pp. 537-560 : 556-557

Key to distinguish the various species of Septemoecia

Based on the data given in Table 1 and on the carapace outlines illustrated in Figure 10 , the species can be separated on the basis of their external carapace characteristics using the following key.

1. Large species carapace length (exclusive of spines)> 2.5 mm. All spines, except the posterior dorsal spine, with numerous sec- ondary spinules................................................................................. S. omega

- Smaller species <2.5 mm. Spines either bare or with only one or two secondary spinules............................. 2

2. Species with long spines; shoulder and ventral spines>50 % CL that curve to point posteriorly............. S. longispinata

- Species with shorter spines; shoulder and ventral spines <35 % CL and only slightly curved pointing obliquely from carapace.................................................................................................... 3

3. Ventral spines very short <10 % CL............................................................... S. deeveyae

- Ventral spines longer>18 % CL.......................................................................... 4

4. Ventral spines inserted low down on the carapace <10 % CH............................................ S. georgei

- Ventral spines inserted at least 25 % CH above the ventral margin............................................... 5

5. Ventral spines inserted ~25 % CH above ventral margin........................................... S. aff. deeveyae

- Ventral spines inserted>40 % CH above ventral margin......................................... .. S. septemspinosa

Figures

FIGURE 10. CarapaCe Outlines Of all knOwn speCies Of Septemoecia reprOduCed at the same sCale, illustrating the eXternal differenCes between the speCies. A, S. omega, A-1 male (redrawn frOm KOrniCker & RudJakOv 2004); B, S. longispinata, male (COpied frOm Ellis 1987 (fig. 1A, B); C, S. aff. deeveyae (COpied frOm KOrniCker 1981, fig. 1a); D, S. septemspinosa, Juvenile female (reprOduCed frOm Angel 1970, fig. 7A, B); E, S. georgei, female (Original drawing Of adult female desCribed here): F, S. deeveyae, Juvenile (redrawn frOm KOrniCker 1969, pl. 1b). The length sCale is 1 mm.