Wolfgang Eberl wrote a special about this species group (DKG Journal 2016-1) I agree what he wrote: bochtleri and herzogi are confined to central Gabon (red oval). All others are related to herzogi. Some of them with very aberrant phenotypes and DNA. Complex group! - JVDZ
Akurenam
GEMGSL_19-13 -
Akurenam
Ambam FTNO 18-06
Ayene
Ayene
Edoum
Edoum
Efulan
GEGVPO_18-12 -
Efulan
GEMLH_2016-27
GEMLH 2016-27
Mbam
Mbam
Medouneu
Medouneu

JH-52

Sork_Oveng
GEMLCG_07-23 -
Sork Oveng

Oveng is about halfway on the (N2) road between Mitzic and Lalara in northern Gabon.

Zomoko
GBG_92-25 -
Zomoko

Type locality: Fast running brook about 3 kilometers north of Zoumoukou or 16 kilometers north of Lalara on the road to Mitzic and Oyem, northern Gabon, 0°27'N, 12°15'E.