Camponotus planatus

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Camponotus planatus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Camponotus
Species: C. planatus
Binomial name
Camponotus planatus
Roger, 1863

Camponotus planatus casent0103696 profile 1.jpg

Camponotus planatus casent0103696 dorsal 1.jpg

Specimen labels

Subspecies

It forms rather small colonies and is exquisitely arboreal in its habits. On Key Largo and at Card's Point, I found it nesting in epiphytic Tillandsias in mangrove thickets; at Miami I saw a fine colony nesting under a piece of loose bark on the trunk of a living tree. (Wheeler 1910). It is a general predator and scavenger, and tends honeydew-producing Homoptera. Nests are in hollow branches and in abandoned termite galleries (Deyrup, Davis & Cover, 2000).

At a Glance • Polygynous  • Invasive  

Photo Gallery

  • Foraging worker from the Yucatan Peninsula, Mexico. Photo by Tom Murray.

Identification

In the field Camponotus novogranadensis is easily mistaken for Camponotus planatus. Both species are dark-colored, non-glossy, and small (majors are about 5mm long). Camponotus novogranadensis is black, with brown or yellowish brown antennae, clypeus, and the sides of the face above the mandibles. Camponotus planatus is usually bicolored, dark red with a black gaster, but occasionally completely black. Under the microscope these two species are conspicuously different. The clypeus of C. novogranadensis has a strong, sharp, median ridge, absent in C. planatus. The mesosoma of C. novogranadensis is covered with small, semiappressed hairs and large, sparse, curved, proclinate hairs, that of C. planatus moderately densely covered with short, sub-erect hairs. (Deyrup and Belmont 2013)

Distribution

This tropical species is widely distributed through Central America, Mexico and Cuba and enters the United States at the southern extremity of Florida and at the mouth of the Rio Grande del Norte. The Florida population is considered to be an introduction by Deyrup (1991) and Deyrup, Davis & Cover (2000). In Florida it is a common species in parts of Dade and Monroe counties, where it lives in tropical hardwood hammocks; also found sporadically in coastal counties north into Palm Beach on the East Coast and Hillsborough on the West Coast. Pest status: none. First published Florida record: Wheeler 1910.

Deyrup (1991): This species has always been considered a native in the Florida Keys, and was widespread at the time of the first list of Florida ants (Wheeler 1932). It is currently the dominant ant of most hardwood hammocks in the Keys. Nests are usually in dead wood, and it is easy to imagine C. planatus rafting to the Keys. It has always been difficult, however, to explain the absence of C. planatus from tropical hammocks on the mainland without invoking some strict ecological requirements existing only in the Keys. During the last few years I have found isolated well-established populations in Sarasota, Tampa and east Miami, and there are early records (Wheeler 1932) from Miami, Fort Myers and Coconut Grove. This suggests that the species is not confined to the Keys by highly specific habitat or climatic requirements, and shows that the species is moved about by humans. If it had been established in the Keys for thousands of years, it would have almost certainly become widely distributed through suitable habitats in south Florida. There are no other Antillean ants that are common in the Keys and absent from similar habitats on the mainland.

Latitudinal Distribution Pattern

Latitudinal Range: 25.69000403° to -19.6°.

   
North
Temperate 		North
Subtropical 		Tropical South
Subtropical 		South
Temperate

Distribution based on Regional Taxon Lists

Nearctic Region: United States.
Neotropical Region: Colombia, Costa Rica, Cuba (type locality), Ecuador, El Salvador, Guadeloupe, Guatemala, Honduras, Mexico, Nicaragua, Panama, Venezuela.

Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.
pChart

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.
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Biology

Aguirre-Jaimes et al. 2018. Figure 1. Inflorescence of Vigna luteola showing the extrafloral nectaries (white arrows) (A). Extrafloral nectaries located at the base of the inflorescence (B); and the principal visitor of the EFNs, the ant Camponotus planatus (C).

Deyrup, Davis & Cover (2000): At present this species is most common in the Florida Keys, where it is a dominant ant of tropical hammocks, including the best examples of hammocks on Key Largo. There are populations in several mainland sites, but it has not yet made significant inroads into the Everglades. It is probably a significant competitor of native ants and other insects that live in wood, and its activities as a predator and a guard of sap-sucking insects should also have ecological importance.

Aguirre-Jaimes et al (2018) found C. planatus was the most common visitor to extrafloral nectories at the base of the inflorescences of Vigna luteola (Fabaceae) in a gulf coast study site (southeastern Veracruz, Mexico). It has been estimated 50 species of plants (16 families, 31 genera), representing 5% of the local flora, have extrafloral nectories in the coastal dune vegetation where this study was conducted.

Flight Period

X X
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Source: antkeeping.info.

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Association with Other Organisms

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Life History Traits

  • Queen number: polygynous (Frumhoff & Ward, 1992)

Castes

Worker

Images from AntWeb

Camponotus planatus casent0103700 head 1.jpgCamponotus planatus casent0103700 profile 1.jpgCamponotus planatus casent0103700 dorsal 1.jpgCamponotus planatus casent0103700 label 1.jpg
Worker. Specimen code casent0103700. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by ABS, Lake Placid, FL, USA.

Queen

Images from AntWeb

Camponotus planatus casent0103699 head 1.jpgCamponotus planatus casent0103699 profile 1.jpgCamponotus planatus casent0103699 dorsal 1.jpgCamponotus planatus casent0103699 label 1.jpg
Queen (alate/dealate). Specimen code casent0103699. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by ABS, Lake Placid, FL, USA.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • planatus. Camponotus planatus Roger, 1863a: 148 (s.w.q.m.) CUBA.
    • Type-material: syntype major and minor workers, syntype queens, syntype males (numbers not stated).
    • Type-locality: Cuba: (no further data) (J.C. Gundlach).
    • [Note: Creighton, 1950a: 398, gives the type-locality as Cuba: Cienaga de Zapata, Sarabanda.]
    • Type-depository: unknown.
    • [Note: Roger type-material is principally in DEIB, MNHN, MNHU, ZSBS.]
    • Wheeler, G.C. & Wheeler, J. 1953e: 194 (l.).
    • Combination in C. (Myrmobrachys): Forel, 1914a: 271.
    • Subspecies of senex: Forel, 1879a: 97; Forel, 1885a: 346; Emery, 1890b: 56; Emery, in Dalla Torre, 1893: 251 (footnote); Emery, 1894k: 62; Emery, 1896d: 377 (in list).
    • Status as species: Roger, 1863b: 5; Mayr, 1863: 459; Dalla Torre, 1893: 248; Forel, 1899c: 141; Forel, 1901e: 371; Forel, 1901h: 74; Wheeler, W.M. 1905b: 134; Wheeler, W.M. 1907a: 276; Wheeler, W.M. 1909b: 238; Wheeler, W.M. 1910d: 348 (redescription); Wheeler, W.M. 1910g: 572; Wheeler, W.M. 1913b: 504; Mann, 1920: 435; Mann, 1922: 53; Emery, 1925b: 164; Smith, M.R. 1930a: 6; Wheeler, W.M. 1932a: 15; Wheeler, W.M. 1937b: 460; Wheeler, W.M. 1942: 258; Creighton, 1950a: 398; Smith, M.R. 1958c: 146; Wilson, 1964b: 11; Kempf, 1972a: 53; Alayo, 1974: 27 (in key); Smith, D.R. 1979: 1434; Deyrup, et al. 1989: 100; Bolton, 1995b: 117; Deyrup, et al. 2000: 301; Deyrup, 2003: 44; Hansen & Klotz, 2005: 92; Branstetter & Sáenz, 2012: 256; Deyrup, 2017: 198; Mackay & Mackay, 2019: 765.
    • Distribution: Colombia, Cuba, Guatemala, Mexico, Paraguay, U.S.A.
    • Current subspecies: nominal plus acaciae, colombicus, continentis, esdras.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Wheeler (1910) - Major Length, 5-6 mm.

Head small, as broad as long, a little broader behind than in front, with straight posterior and convex lateral. borders and rounded anterior corners. Eyes rather large, moderately convex. Mandibles 6-toothed, with convex outer borders and upper surfaces. Clypeus sharply carinate, broadly rounded in front, with the anterior border feebly sinuate in the middle. Frontal area distinct, subtriangular, much broader than long. Frontal carinae not very strongly lyrate, twice as far apart behind as in front. Frontal groove distinct. Antennae moderately long; scapes terete at the base, slightly enlarged distally, extending to the posterior corners of the head. Thorax short, a little narrower in front than the head, somewhat broader in front than behind, the dorsal surface evenly arcuate in profile, flattened when seen from above and marginate on each side, where it passes over into the somewhat concave, perpendicular pleural surface. Epinotum with subequal base and declivity, the former slightly convex and square, the latter distinctly concave, the two surfaces meeting with a rather sharp transverse margin. Petiole moderately high, compressed anteroposteriorly, with convex anterior, flattened posterior surface and rather sharp margin; seen from behind, narrow below, expanded above, with broadly rounded border, entire or feebly notched in the middle. Gaster of the usual shape. Legs rather short; tibiae without bristles on their flexor surfaces.

Opaque throughout, except the mandibles, which are shining, finely striated and coarsely punctate on their lateral and apical surfaces. Head, thorax and gaster densely punctate; legs coarsely shagreened. Cheeks and clypeus with large but rather shallow, somewhat elongated, scattered foveolae; gaster with coarse, sparse, piligerous punctures.

Hairs very abundant, erect, glistening white; covering the head, thorax, petiole and gaster, especially dense and conspicuous on the epinotum and gaster. Hairs on the legs somewhat shorter and more oblique; on the antennal scapes still shorter and more appressed. Pubescence on the gaster long and dense; much shorter and more dilute on the head and thorax.

Head, thorax, petiole and legs rather dark ferruginous red; mandibles, cheeks, clypeus and often also the antennae suffused with yellow. Mandibular teeth and gaster black; femora, tibiae and tarsi often infuscated, except at the articulations.

Minor Length, 3.5-4 mm.

Closely resembling the worker major, but the head smaller and with less convex cheeks and the petiole thicker and blunter.

Queen

Wheeler (1910) - Length, 6.5-8.5 mm.

Resembling the worker major, especially in the shape of the head. Thorax robust and flattened dorsally. Petiole broader and more compressed than in the worker major, its apical margin sharper and with a rather deep and broad median notch. Hairs much shorter and less glistening than in the worker, though abundant and erect. Wings rather short (7 mm); almost colorless, with pale yellow veins and dark brown stigma.

Male

Length, 4.5-5 mm.

Head slightly longer than broad, with large eyes and ocelli, its posterior border broadly rounded; cheeks subparallel, straight, somewhat shorter than the eyes. Clypeus convex, bluntly carinate, with somewhat projecting, rounded and entire anterior margin. Mandibles edentate. Antennae very slender, first funicular joint swollen, longer than the second. Thorax robust, with convex, rounded epinotum, without distinct basal pad declivous surfaces. Petiole low, thick and transverse, with rather sharp, entire dorsal border. Gaster and legs of the usual conformation.

Whole body subopaque, finely shagreened or punctate.

Pilosity much as in the worker minor, but less abundant. Scapes naked. Cheeks with a few blunt, erect hairs. Hairs on legs short, subappressed, longest and most conspicuous on the gaster. Pubescence apparently absent.

Black; mandibles, mouthparts, tarsi, genitalia and articulations of legs and thorax brownish. 'Wings like those of the female, but with even paler veins.

References

References based on Global Ant Biodiversity Informatics

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  • Ahuatzin D. A., E. J. Corro, A. Aguirre Jaimes, J. E. Valenzuela Gonzalez, R. Machado Feitosa, M. Cezar Ribeiro, J. Carlos Lopez Acosta, R. Coates, W. Dattilo. 2019. Forest cover drives leaf litter ant diversity in primary rainforest remnants within human-modified tropical landscapes. Biodiversity and Conservation 28(5): 1091-1107.
  • Benitez-Malvido, J., W. Dattilo, A. P. Martinez-Falcon, C. Duran-Barron, J. Valenzuela, S. Lopez, and R. Lombera. 2016. The multiple impacts of tropical forest fragmentation on arthropod biodiversity and on their patterns of interactions with host plants. Plos One 11: e0146461.
  • Branstetter M. G. and L. Sáenz. 2012. Las hormigas (Hymenoptera: Formicidae) de Guatemala. Pp. 221-268 in: Cano E. B. and J. C. Schuster. (eds.) 2012. Biodiversidad de Guatemala. Volumen 2. Guatemala: Universidad del Valle de Guatemala, iv + 328 pp
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  • INBio Collection (via Gbif)
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