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Species: Cephalotes grandinosus   (Smith, 1860) 

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Taxonomic History (provided by Barry Bolton, 2019)

Cryptocerus grandinosus Smith, 1860c PDF: 76, pl. 4, fig. 5 (w.) BRAZIL. Neotropic. AntCat AntWiki HOL

Taxonomic history

Emery, 1894d PDF: 219 (s.q.).
Combination in Cryptocerus (Cyathocephalus): Santschi, 1919f PDF: 47; in Paracryptocerus (Harnedia): Kempf, 1952 PDF: 11; in Zacryptocerus: Brandão, 1991 PDF: 386; in Cephalotes: De Andrade & Baroni Urbani, 1999: 433.
Junior synonym of Cephalotes pinelii: Emery, 1890c PDF: 75; Forel, 1895b PDF: 134.
Revived from synonymy: Luederwaldt, 1918 PDF: 41.
Senior synonym of Cephalotes nevadensis: Kempf, 1952 PDF: 11.


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Panama, Paraguay, Venezuela
  Biogeographic regions (According to curated Bioregion/Taxon lists):

Distribution Notes:

Costa Rica to Brazil, Bolivia. Costa Rica: Osa Peninsula, Guanacaste Province (5km S Liberia; Palo Verde).


Natural History:

This species appears to be rare in Costa Rica. Andrade and Baroni Urbani (1999) report a collection by Janzen from near Liberia. I have collected it twice, once as stray workers from Palo Verde, and a nest collection from Corcovado (Sirena). The nest was in the high canopy of a Licania tree (Chrysobalanaceae). Much of the crown of this tree was inhabited by an Azteca species, nesting in the live branch tips. But one chamber in a branch tip contained a C. grandinosus nest. The nest contained a few workers and one callow alate queen. There were no Coccoidea inside, in contrast to the Azteca nests which were packed with Coccoidea.


Andrade, M. L. de, and C. Baroni Urbani. 1999. Diversity and adaptation in the ant genus Cephalotes, past and present (Hymenoptera, Formicidae). Stuttgarter Beitrage zur Naturkunde Serie B (Geologie und Palaontologie) 271:1-889.

Kempf, W. W. 1952. A synopsis of the pinelii-complex in the genus Paracryptocerus (Hym. Formicidae). Stud. Entomol. 1:1-30.

Smith, F. 1860. Descriptions of new genera and species of exotic Hymenoptera. J. Entomol. 1:65-84.

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Wild, A. L., 2007, A catalogue of the ants of Paraguay (Hymenoptera: Formicidae)., Zootaxa 1622, pp. 1-55

Cephalotes grandinosis (F. SmithHNS 1860).

Literature records: Central(?), Concepción, “Paraguay” (s. loc.) (Emery 1896b, Forel 1907b, Forel 1907d).

Records probably pertain to persimillisHNS, C. grandinosusHNS has a more northerly distribution (De Andrade and Baroni-Urbani 1999).

Specimen Habitat Summary

Found most commonly in these habitats: 1 times found in Canopy of Licania, 1 times found in seasonally dry scrubby vegetation, 1 times found in tropical dry forest, 1 times found in bosque bajo.

Found most commonly in these microhabitats: 1 times lowland rainforest, 1 times strays, 1 times on low vegetation, 1 times nest in twig above ground, 1 times mature lowland rf, 1 times foraging on tree.

Collected most commonly using these methods: 2 times search, 2 times direct collection.

Elevations: collected from 10 - 540 meters, 172 meters average

Type specimens: Holotype of Cephalotes grandinosus: casent0900236; syntype of Cephalotes grandinosus nevadensis: casent0909294

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