Sensilla on the External Genitalia of the Carabid Beetle, Carabus (Ohomopterus) dehaanii dehaanii Chaudoir (Coleoptera, Carabidae)

Abstract

Sensilla on the male and female external genitalia of the carabid beetle, Carabus (Ohomopterus) dehaanii dehaanii Chaudoir, were investigated with scanning electron microscopy. The investigation for female genitalia was conducted on the coxites and styli. As a result, 4 types of sensilla were distinguished. In male, a total of 6 types of sensilla were identified on the aedeagus. The external morphology and distribution pattern of each type of the sensilla in both sexes were described. Results are expected to provide a ground work for future research on the phylogenetic study of the genus Carabus and the comparative ultrastructure or behavior in the carabid beetle.

Sensilla on the aedeagus of the ground beetle Carabus (Ohomopterus) arrowianus arrowianus (Breuning) (Coleoptera: Carabidae)

“…This situation is similar to the study on Carabus (Ohomopterus) dehaanii dehaanii (Kim & Sota 2004). The basiconic sensilla project from round floors of cuticular depressions and the coeloconic sensillum is situated in pits.…”

“…dehaanii dehaanii (Kim & Sota 2004). These basiconic sensilla have a smooth surface with a thick shaft.…”

“…) dehaanii dehaanii (Kim & Sota 2004). These coeloconic sensilla have an orifice at the center of a round and relatively broad cuticular tubercle.…”

“…Later, sensilla of the genus Damaster (Kim et al . 1999) and of Carabus (Ohomopterus) dehaanii dehaanii (Kim & Sota 2004) were described.…”

Genital feelers: the putative role of parameres and aedeagal sensilla in Coleoptera Phytophaga (Insecta)

“…Although we suspect the sensilla on the aedeagus of being important to insert the median lobe into the female's genital opening, we do not preclude that the sensilla may receive stimuli from the female during copulation (Kim et al 1999;Kim and Teiji 2004).…”