antennal scrobe
ant morphology
ant morphology
Some morphological terms associated with the head and face.
antennal scrobe absent
antennal scrobe absent
A groove, impression, or excavation in the side of the head, which runs above or below the eye to accommodate at least the antennal scape, but often the entire antenna when folded back. Antennal scrobes vary in development from simple broad shallow grooves to extensive deep trenches. Distinguishes among myrmicine genera.
antennal scrobe present
antennal scrobe present
A groove, impression, or excavation in the side of the head, which runs above or below the eye to accommodate at least the antennal scape, but often the entire antenna when folded back. Antennal scrobes vary in development from simple broad shallow grooves to extensive deep trenches. Distinguishes among myrmicine genera.
antennal scrobe more distinct
antennal scrobe more distinct
Used to distinguish Tetramorium simillimum from Tetramorium caldarium, but can be very subtle and difficult to observe. In the former species, the antennal scrobe is more strongly impressed, and the frontal carina remains a distinct outside border of the scrobe, even at its most posterior section.
antennal scrobes absent
antennal scrobes absent
Used to distinguish the major worker of Pheidole obscurithorax from that of Pheidole fervens, Pheidole flavens, Pheidole moerens and Pheidole teneriffana. The first species lacks any depression capable of receiving any portion of the antennae.
antennal scrobe weakly impressed
antennal scrobe weakly impressed
Used to distinguish Tetramorium caldarium from Tetramorium simillimum but can be very subtle and difficult to observe. In the former species, the antennal scrobe is weakly impressed, and the frontal carina does not remain a distinct outside border of the scrobe, often disappearing or becoming very faint at its most posterior section.
antennal scrobe present
antennal scrobe present
Used to distinguish the major worker of Pheidole fervens, Pheidole flavens, Pheidole moerens and Pheidole teneriffana from that of Pheidole obscurithorax. The last species lacks any depression capable of receiving any portion of the antennae.
eyes above face midline
eyes above face midline
The eyes are situated on the lower (ventral) margin of antennal scrobe. Used in Antkey to separate Strumigenys and Strumigenys from Eurhopalothrix.
eyes on upper scrobe margin
eyes on upper scrobe margin
The eyes are situated on the upper (dorsal) margin of antennal scrobe. Used in Antkey to separate Eurhopalothrix from Strumigenys and Strumigenys.
eyes at or close to scrobe apex
eyes at or close to scrobe apex
The eyes situated at or very close to the apex (posterior-most region) of the antennal scrobe. Used in Antkey to separate Cephalotes from Cyphomyrmex.