FIGURES 19–22 in Taxonomic identity of the ghost ant, Tapinoma melanocephalum (Fabricius, 1793) (Formicidae: Dolichoderinae)

FIGURES 19–22. Head of Tapinoma melanocephalum castes showing the shape of the maxillary palps. 19–20) Polymorphism in the maxillary palps of the workers [Colombia: Magdalena, Santa Marta, dry forest plot, (11.2219°N -74.1865°W), 10.x.2015, leg. R. Guerrero, CBUM, CBUMAG:ENT:08464 and CBUMAG:ENT:08465]. 21–22) Widened segments of the maxillary palps of queen and male [both reproductive castes with same data as workers above, CBUM, CBUMAG:ENT:08466 and CBUMAG:ENT:08467, respectively]. Black arrows indicate fifth maxillary palp inserted in the inner face of fourth maxillary palp. All images by Mayron E. Escárraga.Published as part of Guerrero, Roberto J., 2018, Taxonomic identity of the ghost ant, Tapinoma melanocephalum (Fabricius, 1793) (Formicidae: Dolichoderinae), pp. 497-510 in Zootaxa 4410 (3) on page 504, DOI: 10.11646/zootaxa.4410.3.4, http://zenodo.org/record/122181