mesosoma
metapleural gland absent
metapleural gland absent
The metapleuron lacking a distinct gland orifice above the hind coxa. The orifice is often slit shaped and fringed by short hairs. Used in Antkey to separate Camponotus from all other formicine genera.
metapleural gland present
metapleural gland present
The metapleuron lacking a distinct gland orifice above the hind coxa. The orifice is often slit shaped and fringed by short hairs. Used in Antkey to separate Camponotus from all other formicine genera.
2 convexities
2 convexities
The promesonotal profile is composed of two, not one, distinct convexities. Used in Antkey to separate Pheidole fervens and Pheidole teneriffana from Pheidole flavens and Pheidole moerens.
2 pair promesonotal spines
2 pair promesonotal spines
The promesonotum armed with two pair of spines or teeth. Usually the anterior pair is large and robust, and the posterior pair is smaller. Used in Antkey to separate Acromyrmex from Atta.
pronotal spines absent
pronotal spines absent
The pronotum or promesonotum lacking spines or teeth. At most it is armed with blunted humeral angles. Used in Antkey to separate all other myrmicine genera from Atta and Acromyrmex.
pronotal spines weakly arching
pronotal spines weakly arching
The pronotal spines are straight, or weakly arching anteriorly. This character may be informative for separating Atta sexdens from Atta cephalotes, but attine pronotal spines show considerable infraspecific variation and this character may well prove unreliable, and thus must be used with caution.
pronotal spines present
pronotal spines present
The pronotum or promesonotum armed with 1-3 pairs of spines or teeth. Used in Antkey to separate Atta and Acromyrmex from all other myrmicine genera.
pronotal spines strongly arching
pronotal spines strongly arching
The pronotal spines are strongly arching anteriorly. This character may be informative for separating Atta cephalotes from Atta sexdens, but attine pronotal spines show considerable infraspecific variation and this character may well prove unreliable, and thus must be used with caution.
mesosoma dorsum (Iridomyrmex anceps)
mesosoma dorsum (Iridomyrmex anceps)
mesosoma dorsum (Iridomyrmex anceps)
mesosoma dorsum (Linepithema humile)
mesosoma dorsum (Linepithema humile)
mesosoma dorsum (Linepithema humile)