Nomamyrmex esenbeckii

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Nomamyrmex esenbeckii
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dorylinae
Genus: Nomamyrmex
Species: N. esenbeckii
Binomial name
Nomamyrmex esenbeckii
(Westwood, 1842)

Nomamyrmex esenbeckii casent0010790 profile 1.jpg

Nomamyrmex esenbeckii casent0010790 dorsal 1.jpg

Specimen Label

Synonyms

Identification

Watkins (1977) - N. esenbecki. Workers: postoccipital sulcus distinct; dorsum of petiole with longitudinal rugae. Males: median border of head behind ocellar peduncle with a narrow lamella; first gastric tergite usually with longitudinal rugae; width of, blade of stipes about one-half its length; volsella blunt, gradually tapered or snout-shaped.

N. esenbecki s. str. Workers: transversely keeled posterior margin of mesonotum usually straight or slightly convex in the middle; anterior corners of postpetiole prominent and abruptly rounded causing the postpetiole to appear subquadrate with an anterior face as broad or broader than the petiole; entire body usually dark reddish brown with gaster sometimes slightly lighter. The mesonotal keel is occasionally slightly concave, but usually not in all specimens in a series. The posterior edge of the propodeum is often only slightly indented between the propodeal “teeth,” but a few specimens may be deeply indented (dorsal view). Males: setae on fifth gastric tergite broadly separated along the midline (i.e., the separation is about one half the width of the tergite near its base; distal portion of volsella distinctly snout-shaped, but the “snout” varies somewhat in detail.

N. esenbecki crassicornis. Workers: transversely keeled posterior margin of mesonotum usually straight or slightly convex in the middle; anterior corners of the postpetiole not prominent with the sides gradually curving inward to the anterior face which is slightly narrower than the petiole causing the postpetiole to appear trapezoidal; gaster usually yellowish brown, remainder of body reddish brown. A few workers from Panama have slightly concave mesonotal keels; however, these workers have postpetioles and yellowish brown gasters typical for crassicornis. Males: setae on fifth gastric tergite not distinctly separated along the midline; longitudinal rugae distinct on the second gastric tergite; apex of volsella slightly enlarged and rounded. The entire posterior half of the fifth tergite is usually covered with long thick setae; however, some specimens from Panama have the setae along the midline more confined to the posterior border and these setae are shorter than the more lateral setae. The distal portion of the volsella is slightly upturned with a gradually rounded apex in specimens from Panama, almost straight with a bluntly rounded apex in specimens from Trinidad, and somewhat more downturned in specimens from Peru.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Nearctic Region: United States (type locality).
Neotropical Region: Argentina, Bolivia, Brazil (type locality), Colombia, Costa Rica, Ecuador, French Guiana, Guatemala, Guyana, Honduras, Mexico (type locality), Panama, Paraguay, Peru, Suriname, Trinidad and Tobago, Venezuela.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • esenbeckii. Labidus esenbeckii Westwood, 1842: 75, pl. 20, fig. 4 (m.) BRAZIL.
    • Combination in Eciton (Labidus): Emery, 1890b: 39; Santschi, 1920d: 364; Creighton, 1950a: 64.
    • Combination in E. (Holopone): Santschi, 1925b: 11.
    • Combination in E. (Nomamyrmex): Borgmeier, 1936: 56.
    • Combination in Nomamyrmex: Borgmeier, 1953: 14.
    • Status as species: Smith, F. 1859b: 7; Roger, 1863b: 41; Mayr, 1863: 424; Dalla Torre, 1893: 2; Forel, 1895b: 119; Forel, 1899c: 25; Emery, 1900a: 177 (in key); Forel, 1901h: 47; Wheeler, W.M. 1908e: 409 (redescription); Forel, 1911c: 288; Mann, 1916: 422; Borgmeier, 1923: 43; Borgmeier, 1936: 56; Creighton, 1950a: 64; Smith, M.R. 1951a: 779; Borgmeier, 1953: 14; Borgmeier, 1955: 139 (redescription); Borgmeier, 1958: 201; Kempf, 1970a: 322; Kempf & Lenko, 1976: 46; Watkins, 1976: 7 (in key); Watkins, 1977a: 204; Watkins, 1982: 215 (in key); Bolton, 1995b: 292; Wild, 2007b: 43.
    • Senior synonym of fimbriatum, interrupta, terrificum: Borgmeier, 1953: 14; Borgmeier, 1955: 139.
    • Senior synonym of afflictus, crudele, indomabile: Borgmeier, 1955: 139.
    • Senior synonym of crassicornis: Wild, 2007b: 43.
    • Senior synonym of mordax, wilsoni: Shattuck & Cover, 2016: 19.
  • crassicornis. Eciton crassicornis Smith, F. 1855c: 163, pl. 13, figs. 1, 2 (w.) BRAZIL.
    • Borgmeier, 1958: 202 (q.).
    • Combination in E. (Labidus): Emery, 1910b: 23.
    • Combination in E. (Holopone): Santschi, 1925b: 12.
    • Combination in E. (Nomamyrmex): Borgmeier, 1936: 55.
    • Combination in Nomamyrmex: Borgmeier, 1953: 16.
    • Status as species: Smith, F. 1858b: 151; Mayr, 1863: 409; Roger, 1863b: 36; Norton, 1868b: 45; Emery, 1890a: 55; Emery, 1890b: 38; Dalla Torre, 1893: 2; Emery, 1894c: 179; Forel, 1899c: 24; Emery, 1900a: 185; Forel, 1901c: 124; Forel, 1908b: 40; Forel, 1908c: 346; Forel, 1909a: 254; Mann, 1916: 422; Borgmeier, 1923: 42; Wheeler, W.M. 1925a: 2; Santschi, 1929a: 414; Borgmeier, 1936: 55; Borgmeier, 1948b: 460; Creighton, 1950a: 63; Smith, M.R. 1951a: 779; Watkins, 1977a: 205.
    • Subspecies of esenbeckii: Borgmeier, 1955: 149 (redescription); Borgmeier, 1958: 202; Watkins, 1977a: 205; Bolton, 1995b: 292.
    • Senior synonym of hirsutipodex, intrepidum: Borgmeier, 1955: 139.
    • Junior synonym of esenbeckii: Wild, 2007b: 43.
    • Material of the unavailable name furiosum referred here by Borgmeier, 1955: 139.
  • afflictus. Acanthostichus afflictus Gallardo, 1919a: 239, fig. 3 (m.) ARGENTINA.
    • Combination in Eciton: Emery, 1920a: 60.
    • Junior synonym of esenbeckii: Borgmeier, 1955: 139.
  • fimbriatum. Eciton (Labidus) fimbriatum Santschi, 1920d: 363, figs. 1, 2 (m.) FRENCH GUIANA.
    • Junior synonym of esenbeckii: Borgmeier, 1953: 14.
  • hirsutipodex. Eciton (Labidus) esenbecki st. hirsutipodex Santschi, 1920d: 364, fig. 2 (m.) MEXICO.
    • Junior synonym of crassicornis: Borgmeier, 1955: 139.
  • interrupta. Eciton fimbriatum var. interrupta Santschi, 1923c: 249 (m.) BRAZIL.
    • Junior synonym of esenbeckii: Borgmeier, 1953: 14.
  • crudele. Eciton (Holopone) crassicorne subsp. crudele Santschi, 1929a: 414, figs. c, g (w.) BOLIVIA.
    • Junior synonym of esenbeckii: Borgmeier, 1955: 139.
  • intrepidum. Eciton (Holopone) crassicorne var. intrepidum Santschi, 1929a: 414, figs. b, f (w.) VENEZUELA.
    • Junior synonym of crassicornis: Borgmeier, 1955: 139.
  • indomabile. Eciton (Holopone) crassicorne var. indomabile Santschi, 1930e: 82 (w.) BRAZIL.
    • Junior synonym of esenbeckii: Borgmeier, 1955: 139.
  • terrificum. Eciton (Holopone) fimbriatum var. terrificum Santschi, 1930e: 82 (m.) BRAZIL.
    • Junior synonym of esenbeckii: Borgmeier, 1953: 14.
  • mordax. Eciton (Holopone) crassicorne subsp. mordax Santschi, 1929a: 415, figs. d, h (w.) MEXICO.
    • Watkins, 1977a: 210 (m.).
    • Combination in Nomamyrmex: Borgmeier, 1953: 13.
    • Subspecies of crassicorne: Menozzi, 1935b: 189.
    • Junior synonym of wilsoni: Borgmeier, 1955: 139.
    • Subspecies of esenbeckii: Watkins, 1977a: 205; Bolton, 1995b: 292.
    • Junior synonym of esenbeckii: Shattuck & Cover, 2016: 19.
  • wilsoni. Eciton (Labidus) esenbecki st. wilsoni Santschi, 1920d: 366 (m.) U.S.A.
    • Combination in E. (Nomamyrmex): Smith, M.R. 1951a: 779.
    • Combination in Nomamyrmex: Borgmeier, 1953: 13.
    • Subspecies of esenbeckii: Smith, M.R. 1951a: 779; Borgmeier, 1955: 147; Watkins, 1977a: 205; Smith, D.R. 1979: 1329; Watkins, 1985: 481; Bolton, 1995b: 292.
    • Junior synonym of esenbeckii: Shattuck & Cover, 2016: 19.

Type Material

Description

References

  • Borgmeier, T. 1936b. Sobre algumas formigas dos generos Eciton e Cheliomyrmex (Hym. Formicidae). Arch. Inst. Biol. Veg. (Rio J.) 3: 51-68 (page 55, Combination in E. (Nomamyrmex))
  • Borgmeier, T. 1953. Vorarbeiten zu einer Revision der neotropischen Wanderameisen. Stud. Entomol. 2: 1-51 (page 14, Combination in Nomamyrmex, Senior synonym of fimbriatum, interrupta and terrificum.)
  • Borgmeier, T. 1955. Die Wanderameisen der neotropischen Region. Stud. Entomol. 3: 1-720 (page 139, Senior synonym of afflictus, credele and indomabile)
  • Borgmeier, T. 1958a. Nachtraege zu meiner Monographie der neotropischen Wanderameisen (Hym. Formicidae). Stud. Entomol. (n.s.) 1: 197-208 (page 201, see also)
  • Emery, C. 1890c. Studii sulle formiche della fauna neotropica. Bull. Soc. Entomol. Ital. 22: 38-80 (page 39, Combination in Eciton)
  • Santschi, F. 1920d [1919]. Formicides africains et américains nouveaux. Ann. Soc. Entomol. Fr. 88: 361-390 (page 364, Combination in E. (Labidus))
  • Santschi, F. 1925b [1924]. Nouvelles fourmis brésiliennes. Ann. Soc. Entomol. Belg. 64: 5-20 (page 11, Combination in E. (Holopone))
  • Shattuck, S.O., Cover, S. 2016. Taxonomy of some little-understood North American ants (Hymenoptera: Formicidae). Zootaxa 4175: 010–022 (doi:10.11646/zootaxa.4175.1.2).
  • Watkins, J. F., II. 1977a. The species and subspecies of Nomamyrmex (Dorylinae: Formicidae). Journal of the Kansas Entomological Society. 50:203-214. PDF (page 204, see also)
  • Westwood, J. O. 1842. Monograph of the hymenopterous group, Dorylides. Pp. 73-80 in: Westwood, J. O. Arcana entomologica; or illustrations of new, rare, and interesting insects. Volume 1, No. 5. London: W. Smith, pp. 65-80, pl. 17-20. (page 75, pl. 20, fig. 4 male described)