Camponotus crassus

DaRocha et al. (2015) studied the diversity of ants found in bromeliads of a single large tree of Erythrina, a common cocoa shade tree, at an agricultural research center in Ilhéus, Brazil. Forty-seven species of ants were found in 36 of 52 the bromeliads examined. Bromeliads with suspended soil and those that were larger had higher ant diversity. C. crassus was found in 7 different bromeliads but was associated with twigs and bark cavities, rather than suspended soil or litter, of the plants. Fagundes et al. (2010) report it nesting in bamboo.

Distribution based on Regional Taxon Lists
Neotropical Region: Argentina, Brazil, Paraguay, Trinidad and Tobago.

Biology
Sanz-Veiga et al. (2017) - This species was observed visiting the extrafloral nectaries of Tocoyena formosa plants occurring in a southeastern Brazilian cerrado study-site.

Lange et al. (2015) - This species was found in semideciduous mesophytic forest pitfall-trap samples. The study examined the ant community within a patch (11.2 hectares) of forest in an urban park (Araguari, Brazil).

Brown & Fenner (1998) report this species being raided by the army ant Nomamyrmex esenbeckii at Itatiaia, Brazil.

Nomenclature

 * . Camponotus crassus Mayr, 1862: 670 (w.) BRAZIL (Rio de Janeiro).
 * Forel, 1912i: 78 (q.); Mariano, et al. 2001: 272 (k.).
 * Combination in C. (Myrmobrachys): Forel, 1914a: 270.
 * Subspecies of senex: Forel, 1879a: 99; Emery, 1888c: 364; Emery, in Dalla Torre, 1893: 251 (footnote); von Jhering, 1894: 374 Emery, 1896d: 377 (in list).
 * Status as species: Roger, 1863b: 5; Mayr, 1863: 398; Mayr, 1865: 37 (redescription); Mayr, 1870a: 376 (in key); Emery, 1878a: ix (in list); Dalla Torre, 1893: 227; Forel, 1895b: 102; Emery, 1906c: 192; Forel, 1907a: 34; Forel, 1908c: 410; Forel, 1912i: 78; Bruch, 1914: 228; Mann, 1916: 481; Luederwaldt, 1918: 51; Wheeler, W.M. 1918b: 27; Santschi, 1922c: 121; Emery, 1925b: 163; Borgmeier, 1927c: 157; Eidmann, 1936b: 97; Kusnezov, 1952d: 208; Kempf, 1961b: 523; Kempf, 1970b: 341; Kempf, 1972a: 51; Brandão, 1991: 333; Bolton, 1995b: 94; Wild, 2007b: 28, 47.
 * Senior synonym of flexus: Mayr, 1870a: 387; Dalla Torre, 1893: 227; Forel, 1895b: 102; Emery, 1896d: 377; Emery, 1925b: 163; Kempf, 1972a: 51; Bolton, 1995b: 94.
 * Senior synonym of picticornis: Wild, 2007b: 47.
 * Senior synonym of vezenyii: Wild, 2007b: 47.
 * Current subspecies: nominal plus amazonicus, delabiatus.
 * flexus. Camponotus flexus Mayr, 1862: 671 (w.) BRAZIL (no state data).
 * Status as species: Mayr, 1863: 399; Roger, 1863b: 5.
 * Junior synonym of crassus: Mayr, 1870a: 387; Dalla Torre, 1893: 227; Forel, 1895b: 102; Emery, 1896d: 377; Emery, 1925b: 163; Kempf, 1972a: 51; Bolton, 1995b: 100.
 * picticornis. Camponotus (Myrmobrachys) crassus var. picticornis Santschi, 1936d: 421 (w.) ARGENTINA (Misiones, Corrientes, Córdoba), BRAZIL (Santa Catarina).
 * Subspecies of crassus: Kusnezov, 1952d: 208; Kempf, 1972a: 51; Brandão, 1991: 333; Bolton, 1995b: 117.
 * Junior synonym of crassus: Wild, 2007b: 47.
 * vezenyii. Camponotus vezenyii Forel, 1907a: 34 (w.) PARAGUAY.
 * Combination in C. (Myrmobrachys): Forel, 1914a: 271.
 * Subspecies of crassus: Forel, 1911e: 291; Forel, 1912i: 78.
 * Status as species: Forel, 1909a: 264; Emery, 1920b: 260; Emery, 1925b: 165; Wheeler, W.M. 1942: 258; Kempf, 1972a: 54; Bolton, 1995b: 129.
 * Junior synonym of crassus: Wild, 2007b: 47.

References based on Global Ant Biodiversity Informatics

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