Fig. 4 in Contribution to the Knowledge of the Rakantrechus Complex (Coleoptera, Carabidae, Trechini), with Description of a New Subgenus and a New Species of the Genus Nipponaphaenops S. Uéno, 1971 from Northwestern Shikoku, Western Japan

Fig. 4. Reconstructed derivation pattern of elytral discal chaetotaxy in the Rakantrechus Complex.—Except asterisked one, all the chaetotaxy presented in diagrams are exhibited by the extant species of the Rakantrechus Complex (including undescribed Kusumia species), but the asterisked one of Ishikawatrechus is only theoretically required.—Left side of arrow is ancestral state and right side is derivative one; the transposition of setae between internal and external series is not taken into consideration.