Ant key 20 » Manaaki Whenua

Subfamily Myrmicinae

Genus Pheidole

Head small, width <0.6 mm, rounded appearance dosally (Fig. a).	21 (minor caste)
Head large, width >1 mm, distinctly bilobed appearance dorsally (Fig. b).	24 (major caste)

Fig. a [Pheidole megacephala] head (minor cast). Image: Shannon Hartman (Specimen: CASENT0056016). www.antweb.org Image — Fig. a Pheidole megacephala head (minor cast). Image: Shannon Hartman (Specimen: CASENT0056016). www.antweb.org

Fig. b [Pheidole megacephala] head (major caste). Image: Michele Esposito (Specimen: CASENT0822218). www.antweb.org Image — Fig. b Pheidole megacephala head (major caste). Image: Michele Esposito (Specimen: CASENT0822218). www.antweb.org