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Anterior view of head, adult worker. The posterolateral lobes distinctly rugose and the lack of a punctate ground sculpture gives the head a shiny appearance. Used in Antkey to separate the major workers of Pheidole fervens, Pheidole flavens, Pheidole moerens, Pheidole obscurior and Pheidole teneriffana from those of all other Pheidole species. Anterior view of head, adult worker. The posterolateral lobes distinctly rugose and the lack of a punctate ground sculpture gives the head a shiny appearance. Used in Antkey to separate the major workers of Pheidole fervens, Pheidole flavens, Pheidole moerens, Pheidole obscurior and Pheidole teneriffana from those of all other Pheidole species.
Pheidole fervens
Anterior view of head, adult worker. The posterolateral lobes distinctly rugose and the lack of a punctate ground sculpture gives the head a shiny appearance. Used in Antkey to separate the major workers of Pheidole fervens, Pheidole flavens, Pheidole moerens, Pheidole obscurior and Pheidole teneriffana from those of all other Pheidole species.
Anterior view of head, adult worker. The head length is weakly longer than head width. Used in Antkey to separate majors of Pheidole fervens from those of Pheidole teneriffana . Anterior view of head, adult worker. The head length is weakly longer than head width. Used in Antkey to separate majors of Pheidole fervens from those of Pheidole teneriffana.
Pheidole fervens
Anterior view of head, adult worker. The head length is weakly longer than head width. Used in Antkey to separate majors of Pheidole fervens from those of Pheidole teneriffana.
Anterior view of head, adult worker. Posterior margin of head weakly convex. Anterior view of head, adult worker. Posterior margin of head weakly convex.
Pheidole fervens
Anterior view of head, adult worker. Posterior margin of head weakly convex.
Anterior view of head, adult worker. The posterior margin of the head weakly convex. Used in Antkey to separate the minor worker of Pheidole fervens from Pheidole obscurithorax (strongly convex) and Pheidole teneriffana (flat). Anterior view of head, adult worker. The posterior margin of the head weakly convex. Used in Antkey to separate the minor worker of Pheidole fervens from Pheidole obscurithorax (strongly convex) and Pheidole teneriffana (flat).
Pheidole fervens
Anterior view of head, adult worker. The posterior margin of the head weakly convex. Used in Antkey to separate the minor worker of Pheidole fervens from Pheidole obscurithorax (strongly convex) and Pheidole teneriffana (flat).

Anterior view of head, adult. Head smooth and shining; shape subquadrate. Anterior view of head, adult. Head smooth and shining; shape subquadrate.
Pheidole fervens
Anterior view of head, adult. Head smooth and shining; shape subquadrate.
Anterior view of head, adult. Posterolateral lobes; head shape rectangular. Anterior view of head, adult. Posterolateral lobes; head shape rectangular.
Pheidole fervens
Anterior view of head, adult. Posterolateral lobes; head shape rectangular.
Anterior view of antennal scrobe, adult worker. Antennal scrobe present. Anterior view of antennal scrobe, adult worker. Antennal scrobe present.
Pheidole fervens
Anterior view of antennal scrobe, adult worker. Antennal scrobe present.
Anterior view of head, adult worker. Antennal scrobe absent. Anterior view of head, adult worker. Antennal scrobe absent.
Pheidole fervens
Anterior view of head, adult worker. Antennal scrobe absent.

Anterior view of body, surface characters, adult worker. Sculpture between eyes and mandibles are longitudinal rugae intersected by transverse rugae. Anterior view of body, surface characters, adult worker. Sculpture between eyes and mandibles are longitudinal rugae intersected by transverse rugae.
Pheidole fervens
Anterior view of body, surface characters, adult worker. Sculpture between eyes and mandibles are longitudinal rugae intersected by transverse rugae.
Lateral view of thorax / mesosoma, adult worker. Slope of mesosoma steep. Lateral view of thorax / mesosoma, adult worker. Slope of mesosoma steep.
Pheidole fervens
Lateral view of thorax / mesosoma, adult worker. Slope of mesosoma steep.
Lateral view of waist, adult worker. The two segments of the waist. Lateral view of waist, adult worker. The two segments of the waist.
Pheidole fervens
Lateral view of waist, adult worker. The two segments of the waist.
Lateral view of waist, adult worker. The lateral portions of petiole and postpetiole are weakly sculptured to lacking sculpture, giving them a shiny appearance. Used in Antkey to separate the minor worker of Pheidole fervens from that of Pheidole obscurithorax . Lateral view of waist, adult worker. The lateral portions of petiole and postpetiole are weakly sculptured to lacking sculpture, giving them a shiny appearance. Used in Antkey to separate the minor worker of Pheidole fervens from that of Pheidole obscurithorax.
Pheidole fervens
Lateral view of waist, adult worker. The lateral portions of petiole and postpetiole are weakly sculptured to lacking sculpture, giving them a shiny appearance. Used in Antkey to separate the minor worker of Pheidole fervens from that of Pheidole obscurithorax.

Lateral view of head, adult worker. Antennal club 3-segmented. Lateral view of head, adult worker. Antennal club 3-segmented.
Pheidole fervens
Lateral view of head, adult worker. Antennal club 3-segmented.
Lateral view of antennal scrobe, adult worker. Antennal scrobe present. Lateral view of antennal scrobe, adult worker. Antennal scrobe present.
Pheidole fervens
Lateral view of antennal scrobe, adult worker. Antennal scrobe present.
Lateral view of head, adult worker. Posterolateral portion of cephalic dorsum sculptured. Lateral view of head, adult worker. Posterolateral portion of cephalic dorsum sculptured.
Pheidole fervens
Lateral view of head, adult worker. Posterolateral portion of cephalic dorsum sculptured.
Lateral view of head, adult worker. The posterolateral portion of cephalic dorsum smooth and shining. Used in Antkey to separate the majors of Pheidole flavens and Pheidole moerens from those of Pheidole fervens and Pheidole teneriffana . Lateral view of head, adult worker. The posterolateral portion of cephalic dorsum smooth and shining. Used in Antkey to separate the majors of Pheidole flavens and Pheidole moerens from those of Pheidole fervens and Pheidole teneriffana.
Pheidole fervens
Lateral view of head, adult worker. The posterolateral portion of cephalic dorsum smooth and shining. Used in Antkey to separate the majors of Pheidole flavens and Pheidole moerens from those of Pheidole fervens and Pheidole teneriffana.

Lateral view of propodeum, adult worker. Propodeal spine. Lateral view of propodeum, adult worker. Propodeal spine.
Pheidole fervens
Lateral view of propodeum, adult worker. Propodeal spine.
Lateral view of thorax / mesosoma, adult worker. Promesonotum composed of two distinct convexities. Lateral view of thorax / mesosoma, adult worker. Promesonotum composed of two distinct convexities.
Pheidole fervens
Lateral view of thorax / mesosoma, adult worker. Promesonotum composed of two distinct convexities.
Lateral view of thorax / mesosoma, adult worker. 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 . Lateral view of thorax / mesosoma, adult worker. 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.
Pheidole fervens
Lateral view of thorax / mesosoma, adult worker. 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.
Lateral view of waist, adult worker. Lateral portions of petiole and postpetiole weakly sculptured to lacking sculpture. Lateral view of waist, adult worker. Lateral portions of petiole and postpetiole weakly sculptured to lacking sculpture.
Pheidole fervens
Lateral view of waist, adult worker. Lateral portions of petiole and postpetiole weakly sculptured to lacking sculpture.

Lateral view of waist, adult worker. The postpetiole of the major and minor worker is not distinctly larger in volume than the petiole. Used in Antkey to separate Pheidole fervens , Pheidole obscurithorax and Pheidole teneriffana from Pheidole megacephala . Lateral view of waist, adult worker. The postpetiole of the major and minor worker is not distinctly larger in volume than the petiole. Used in Antkey to separate Pheidole fervens, Pheidole obscurithorax and Pheidole teneriffana from Pheidole megacephala.
Pheidole fervens
Lateral view of waist, adult worker. The postpetiole of the major and minor worker is not distinctly larger in volume than the petiole. Used in Antkey to separate Pheidole fervens, Pheidole obscurithorax and Pheidole teneriffana from Pheidole megacephala.
Lateral view of waist, adult worker. The two segments of the waist. Lateral view of waist, adult worker. The two segments of the waist.
Pheidole fervens
Lateral view of waist, adult worker. The two segments of the waist.
Lateral view of postpetiole, adult worker. Postpetiole not distinctly swollen relative to petiole. Lateral view of postpetiole, adult worker. Postpetiole not distinctly swollen relative to petiole.
Pheidole fervens
Lateral view of postpetiole, adult worker. Postpetiole not distinctly swollen relative to petiole.
Lateral view of body, entire, adult worker. Photo by April Nobile, Antweb.org . Lateral view of body, entire, adult worker. Photo by April Nobile, Antweb.org.
Pheidole flavens
Lateral view of body, entire, adult worker. Photo by April Nobile, Antweb.org.

Dorsal view of body, entire, adult worker. Photo by April Nobile, Antweb.org . Dorsal view of body, entire, adult worker. Photo by April Nobile, Antweb.org.
Pheidole flavens
Dorsal view of body, entire, adult worker. Photo by April Nobile, Antweb.org.
Anterior view of head, adult worker. Photo by April Nobile, Antweb.org . Anterior view of head, adult worker. Photo by April Nobile, Antweb.org.
Pheidole flavens
Anterior view of head, adult worker. Photo by April Nobile, Antweb.org.
Lateral view of body, entire, adult worker. Photo by April Nobile, Antweb.org . Lateral view of body, entire, adult worker. Photo by April Nobile, Antweb.org.
Pheidole flavens
Lateral view of body, entire, adult worker. Photo by April Nobile, Antweb.org.
Anterior view of head, adult worker. Photo by April Nobile, Antweb.org . Anterior view of head, adult worker. Photo by April Nobile, Antweb.org.
Pheidole flavens
Anterior view of head, adult worker. Photo by April Nobile, Antweb.org.

Dorsal view of body, entire, adult worker. Photo by April Nobile, Antweb.org . Dorsal view of body, entire, adult worker. Photo by April Nobile, Antweb.org.
Pheidole flavens
Dorsal view of body, entire, adult worker. Photo by April Nobile, Antweb.org.
Anterior view of head, adult worker. Cephalic carinae approaching posterior head margin. Photo by April Nobile, Antweb.org , modified. Anterior view of head, adult worker. Cephalic carinae approaching posterior head margin. Photo by April Nobile, Antweb.org, modified.
Pheidole flavens
Anterior view of head, adult worker. Cephalic carinae approaching posterior head margin. Photo by April Nobile, Antweb.org, modified.
Anterior view of head, adult worker. Carinae approaching posterior head margin. This character state was used by Wilson (2003) to distinguish Pheidole flavens from Pheidole moerens . However, the character is ambiguous and variable, and may have been based upon examination of a limited amount of material. Anterior view of head, adult worker. Carinae approaching posterior head margin. This character state was used by Wilson (2003) to distinguish Pheidole flavens from Pheidole moerens. However, the character is ambiguous and variable, and may have been based upon examination of a limited amount of material.
Pheidole flavens
Anterior view of head, adult worker. Carinae approaching posterior head margin. This character state was used by Wilson (2003) to distinguish Pheidole flavens from Pheidole moerens. However, the character is ambiguous and variable, and may have been based upon examination of a limited amount of material.
Anterior view of head, adult worker. The posterolateral lobes distinctly rugose and the lack of a punctate ground sculpture gives the head a shiny appearance. Used in Antkey to separate the major workers of Pheidole fervens , Pheidole flavens , Pheidole moerens , Pheidole obscurior and Pheidole teneriffana from those of all other Pheidole species. Anterior view of head, adult worker. The posterolateral lobes distinctly rugose and the lack of a punctate ground sculpture gives the head a shiny appearance. Used in Antkey to separate the major workers of Pheidole fervens, Pheidole flavens, Pheidole moerens, Pheidole obscurior and Pheidole teneriffana from those of all other Pheidole species.
Pheidole flavens
Anterior view of head, adult worker. The posterolateral lobes distinctly rugose and the lack of a punctate ground sculpture gives the head a shiny appearance. Used in Antkey to separate the major workers of Pheidole fervens, Pheidole flavens, Pheidole moerens, Pheidole obscurior and Pheidole teneriffana from those of all other Pheidole species.