Crematogaster steinheili

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Crematogaster steinheili
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Crematogaster
Species: C. steinheili
Binomial name
Crematogaster steinheili
Forel, 1881

MCZ ENT Crematogaster steinheili hal.jpg

MCZ ENT Crematogaster steinheili had.jpg

Specimen Label

Subspecies

This ant can be quite common and abundant in favored habitats within its range.

Identification

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Bahamas, Barbados, Cuba, Dominican Republic, Greater Antilles, Haiti, Lesser Antilles, Puerto Rico, United States Virgin Islands (type locality).


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

San Cristóbal, República Dominicana. Video by Judá Isaí Martínez Uribe.

This species was recorded as being common by Wheeler (1908) and Menozzi and Russo (1930). Like many Crematogaster species it appears to thrive in habitats that contains wood and plants that it can use to create nest cavities, e.g., under the bark of live or dead trees, in hollowed out plant cavities and underneath downed wood.

Regional Notes

Bahamas

Wheeler (1905): Numerous colonies containing males and winged females were found nesting in hollow twigs, and especially in the Tillandsias growing on the mangroves and other shrubs in the 'swashes' of Andros. These colonies were particularly abundant on Big Wood Key (May 16), Pot Key, and other keys along the course of the Southern Bight (May 18 and 19). A few specimens were also taken at West Bay on New Providence Island.

Puerto Rico

Wheeler (1908): Common; nesting in Tillandsias, under bark or in the hollow twigs of various trees. This variety, which seems to be widely distributed through the West Indies, is closely related to the missouriensis Pergande which ranges as far north as Missouri. In one locality in Culebra colonies of steinheili were found to have constructed "sheds" or "tents" of fine vegetable debris over coccids, both on the upper and lower surfaces of the large shining leaves of a tree (Cordia macrophylla). These sheds were small, flattened or conical structures each covering only one or a few coccids.

Castes

Nomenclature

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

  • steinheili. Crematogaster steinheili Forel, 1881: 15 (w.) ANTILLES. Forel, 1912f: 216 (q.m.); Menozzi & Russo, 1930: 154 (q.m.). Combination in C. (Orthocrema): Emery, 1922e: 136. Junior synonym of victima: Mayr, 1887: 624. Revived from synonymy as subspecies of victima: Dalla Torre, 1893: 87; Emery, 1895c: 288 (footnote). Revived status as species: Forel, 1912f: 216; Wheeler, W.M. 1917g: 460; Gallardo, 1934: 45. Current subspecies: nominal plus argentina.

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

Description

Worker

L. 2,1 bis 2,5 mm. Fühlerkoule zweigliedrig. Dornen des Metanotum mittellang, gerade, etwas divergirend, schief nach oben und hinten gerichtet. Erstes Stielehenglied, von oben gesehen, viereckig, kaum etwas länger als breit und kaum etwas breiter hinten als vorne; hinten oben mit einem mässig scharfen queren Rande, der seitlich in zwei stumpfen Höckern endigt, vorne unten mit einem Zahne in der Mitte, Zweites Stielchenglied oben in der Mitte eingedrückt, ohne Längsfurche.

Mandibeln gestreift. Clypeus mit einigen Längsrunzeln. Occiput und Kopfseiten stellenweise äusserst seicht und fein genetzt. Wangen fein und dicht genetzt, wenig glänzend. Stirne und Vertex glatt und glänzend. Thorax und Stielchen mehr oder weniger regelmässig genetzt. Metanotum zwischen den Dornen matt; sehr regelmässig, dicht und ziemlich grob punktirt-genetzt. Pronotum mit einigen sehr groben Längsrunzeln; die beiden äussersten derselben bilden zwei Seitenkiele, die sich auf Meso- und Metanotum fortsetzen; die meso-metanotale Einschnürung leistenartig überbrücken und in die Dornen endigen. Abdomen glatt und glänzend. Beine glatt.

Der ganze Körper nicht sehr reichlich abstehend beberstet, ungemein fein, kurz und sehr spärlich pubescent. Fühlerschäfte und Beine mit einer mässig langen, sehr feinen, schief abstehenden Behaarung, die an den Fühlerschäften ziemlich reichlich ist.

Röthlichgelb, Beine etwas heller. Erstes Hinterleibssegens röthlich gelbbraun oder braungelb, häufig hinten dunkler. Die übriges Segmente braun.

Queen

Menozzi (1930) - Colorazione, pubescenza e pilosità come nell'operaia. Liscia e lucida eccetto i lati del capo, davanti agli occhi, e le fossette antennali che sono striate. Palpi mascellari di cinque articoli e labiali di tre, come nell'operaia.

Capo poco più lungo che largo, coi lati dritti e cogli angoli occipitali arrotondati. Mandibole striate e armate di quattro denti. Clipeo posteriormente convesso nella porzione compresa fra le lamine frontali. Antenne con articoli proporzionalmente più allungati che non quelli dell'operaia. Occhi grandi, lo spazio che rimane anteriormente e posteriormente ad essi e più corto che la lunghezza del loro diametro. Occelli grandi, collocati rispettivamente entro a una piccola fossetta.

Torace un poco più stretto del capo. Promesonoto convesso da un lato all' altro e colla massima larghezza nel mezzo. Scudetto al medesimo livello dello scudo del promesonoto. Epinoto convesso, fornito di due spine a sezione conica e più brevi di una metà dello spazio esistente internamente fra le loro basi. Peziolo subquadrato, cogli angoli posteriori aguzzi e sporgenti a forma di due denticini; postpeziolo un po' più largo del peziolo e globoso. Gastro colla base subtroncata. Ali ialine con nervature testacee.

Lunghezza mm. 5-5,5

Male

Menozzi (1930) - Statura un po' più piccola di quella dell' operaia; di colore giallo testaceo, con le antenne e le zampe bianco giallastre. Liscio e lucente; pilosità molto sparsa. Il capo è così largo che lungo, coll' occipite arrotondato. Gli ocelli sono grandi, occupando quasi tutti i lati del capo. Le mandibole hanno un solo piccolo denticino. Il clipeo è stretto e leggermente convesso nel mezzo. Antenne di 12 articoli; lo scapo è appena più lungo del primo articolo del funicolo che è di forma subglobosa, articoli 2-5 trasversi, gli altri gradatamente allungati. Promesonoto fortemente convesso. Scudetto piccolo e un po' più basso dello scudo promesonotale. Nodo del peziolo più largo che lungo; postpeziolo colla massima larghezza posteriormente e coi lati arrotondati. Ali come nella femmina.

Lunghezza mm. 2,3.

Type Material

Collected in 1887 from the loose bark of a tree along the road near the St. Thomas cemetery.

References

  • Dalla Torre, K. W. von. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. (page 87, Revived from synonymy as variety of victima)
  • Emery, C. 1895d. Beiträge zur Kenntniss der nordamerikanischen Ameisenfauna. (Schluss). Zool. Jahrb. Abt. Syst. Geogr. Biol. Tiere 8: 257-360 (page 288, (footnote) Revived from synonymy as variety of victima)
  • Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 136, Combination in C. (Orthocrema))
  • Forel, A. 1881. Die Ameisen der Antille St. Thomas. Mitt. Münch. Entomol. Ver. 5: 1-16 (page 15, worker described)
  • Forel, A. 1912g. Formicides néotropiques. Part III. 3me sous-famille Myrmicinae (suite). Genres Cremastogaster et Pheidole. Mém. Soc. Entomol. Belg. 19: 211-237 (page 216, queen, male described, Revived status as species)
  • Gallardo, A. 1934b. Las hormigas de la República Argentina. Subfamilia Mirmicinas, segunda sección Eumyrmicinae, tribu Crematogastrini (Forel), género Crematogaster Lund. An. Mus. Nac. Hist. Nat. B. Aires 38: 1-84 (page 45, Revived status as species)
  • Mayr, G. 1887. Südamerikanische Formiciden. Verh. K-K. Zool.-Bot. Ges. Wien 37: 511-632 (page 624, Junior synonym of victima)
  • Menozzi, C.; Russo, G. 1930. Contributo alla conoscenza della mirmecofauna della Repubblica Dominicana (Antille). Boll. Lab. Zool. Gen. Agrar. R. Sc. Super. Agric. 24: 148-173 (page 154, queen, male described)
  • Wheeler, W. M. 1905c. The ants of the Bahamas, with a list of the known West Indian species. Bull. Am. Mus. Nat. Hist. 21: 79-135
  • Wheeler, W. M. 1908a. The ants of Porto Rico and the Virgin Islands. Bull. Am. Mus. Nat. Hist. 24: 117-158.
  • Wheeler, W. M. 1917g. Jamaican ants collected by Prof. C. T. Brues. Bull. Mus. Comp. Zool. 61: 457-471 (page 460, Revived status as species)

References based on Global Ant Biodiversity Informatics

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  • Boer P. 2019. Ants of Curacao, species list. Accessed on January 22 2019 at http://www.nlmieren.nl/websitepages/SPECIES%20LIST%20CURACAO.html
  • Deyrup M., L. Davis, and S. Buckner. 1998. Composition of the ant fauna of three Bahamian islands. Proceedings of the seventh symposium on the natural history of the Bahamas. 23-32. Bahamian Field Station, San Salvador, Bahamas
  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
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  • Fontenla J. L., and J. Alfonso-Simonetti. 2018. Classification of Cuban ants (Hymenoptera: Formicidae) into functional groups. Poeyana Revista Cubana de Zoologia 506: 21-30.
  • Fontenla Rizo J. L. 1997. Lista preliminar de las hormigas de Cuba (Hymenoptera: Formicidae). Cocuyo 6: 18-21.
  • Forel A. 1912. Formicides néotropiques. Part III. 3me sous-famille Myrmicinae (suite). Genres Cremastogaster et Pheidole. Mémoires de la Société Entomologique de Belgique. 19: 211-237.
  • Gallardo A. 1934. Las hormigas de la República Argentina. Subfamilia Mirmicinas, segunda sección Eumyrmicinae, tribu Crematogastrini (Forel), género Crematogaster Lund. Anales del Museo Nacional de Historia Natural de Buenos Aires 38: 1-84.
  • Garcia M. A. The vulnerability of leaflitter ants to forest disturbances in the islands of Puerto Rico, Greater Antilles. Novitates Caribaea 13: 74-91.
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  • Santschi F. 1929. Mélange myrmécologique. Wiener Entomologische Zeitung. 46: 84-93.
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  • Wheeler W. M. 1908. The ants of Jamaica. Bulletin of the American Museum of Natural History 24: 159-163.
  • Wheeler W. M. 1908. The ants of Porto Rico and the Virgin Islands. Bulletin of the American Museum of Natural History 24: 117-158.
  • Wheeler W. M. 1917. Jamaican ants collected by Prof. C. T. Brues. Bulletin of the Museum of Comparative Zoology 61: 457-471.
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