Strumigenys odacon

AntWiki: The Ants --- Online
Strumigenys odacon
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. odacon
Binomial name
Strumigenys odacon
Fisher, 2000

Strumigenys odacon casent0005617 profile 1.jpg

Strumigenys odacon casent0005617 dorsal 1.jpg

Specimen labels

Known from rainforest habitat litter-samples.

Identification

Bolton (2000) - A member of the scotti complex in the Strumigenys scotti-group. See notes under Strumigenys glycon and Strumigenys langrandi.

Keys including this Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: -22.21667° to -22.21667°.

 
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Malagasy Region: Madagascar (type locality).

Distribution based on AntMaps

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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.
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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

Template:Strumigenys

Castes

Worker

Images from AntWeb

Strumigenys odacon casent0005618 head 1.jpgStrumigenys odacon casent0005618 profile 1.jpgStrumigenys odacon casent0005618 dorsal 1.jpgStrumigenys odacon casent0005618 label 1.jpg
Paratype of Strumigenys odaconWorker. Specimen code casent0005618. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by CAS, San Francisco, CA, USA.
Strumigenys odacon casent0005619 head 1.jpgStrumigenys odacon casent0005619 profile 1.jpgStrumigenys odacon casent0005619 dorsal 1.jpgStrumigenys odacon casent0005619 label 1.jpg
Paratype of Strumigenys odaconWorker. Specimen code casent0005619. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by CAS, San Francisco, CA, USA.
Strumigenys odacon casent0005620 head 1.jpgStrumigenys odacon casent0005620 profile 1.jpgStrumigenys odacon casent0005620 dorsal 1.jpgStrumigenys odacon casent0005620 label 1.jpg
Holotype of Strumigenys odaconWorker. Specimen code casent0005620. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by MCZ, Cambridge, MA, USA.

Queen

Images from AntWeb

Strumigenys odacon casent0006062 head 1.jpgStrumigenys odacon casent0006062 profile 1.jpgStrumigenys odacon casent0006062 dorsal 1.jpgStrumigenys odacon casent0006062 label 1.jpg
Paratype of Strumigenys odaconQueen (alate/dealate). Specimen code casent0006062. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by CAS, San Francisco, CA, USA.

Nomenclature

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

  • odacon. Strumigenys odacon Fisher, in Bolton, 2000: 691 (w.q.) MADAGASCAR.

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

Description

Worker

Holotype. TL 2.1, HL 0.51, HW 0.39, CI 77, ML 0.22, MI 44, SL 0.31, SI 78, PW 0.25, AL 0.52. Characters of scotti-complex. Mandibles in full-face view short, outer margins shallowly and evenly convex. Upper scrobe margin evenly and shallowly convex in full-face view, not bordered by a rim or flange, the eyes visible. Maximum diameter of eye approximately equal to maximum width of scape, with 3 ommatidia in longest row. Scape subcylindrical, curved and narrowed near base; hairs on leading edge slender, slightly flattened or spoon-shaped apically. Cephalic dorsum densely clothed with erect to suberect filiform ground-pilosity. Upper scrobe margin fringed with sharply curved hairs which are flattened or spoon-shaped apically and are similar in size to, or slightly larger than, those on leading edge of scape. Cephalic dorsum with 6 standing filiform hairs arranged in a transverse row of 4 close to the occipital margin and a more anteriorly situated pair. Pronotal humeral hair flagellate. Mesonotum with two pairs of filiform hairs: a pair on the anterior margin and a shorter more posteriorly situated pair. Propodeum with one pair of short, fine, posteriorly curved hairs immediately anterior of propodeal spines which are more or less as long as spines. Ground-pilosity on dorsal pronotum as on head, pilosity inconspicuous on remainder of alitrunk. Dorsum of alitrunk in outline convex anteriorly and more or less flat posteriorly. Metanotal grove shallowly impressed. Anterior mesonotum without a conspicuous carina above the mesothoracic spiracle; mesopleural gland set in a small circular notch. Propodeal tooth triangular, lamellate, pointed apically, and subtended by a very narrow lamella that is continuous down the declivity. Pronotal dorsum longitudinally striolate with superficial punctulate sculpture. Mesonotal and propodeal dorsum reticulate-punctate. Side of pronotum superficially longitudinally striolate. Pleurae and side of propodeum glassy smooth and peripherally punctulate. Postpetiole disc with superficial longitudinally striolate sculpture. In profile ventral spongiform tissue of petiolar peduncle a well developed curtain that is continuous along the base of the peduncle and equal or greater in depth than the maximum diameter of eye. Basigastral costulae well developed and sharply defined, radiating on each side of a broad central clear area. Dorsal surface of petiole, postpetiole, and gaster with standing filiform hairs which are slightly thickened apically. Colour light brown.

Paratypes. TL 2.0-2.2, HL 0.48-0.51, HW 0.37-0.41, CI 76-81, ML 0.22-0.25, MI 44-0.51, SL 0.29-0.31, SI 72-78, PW 0.23-0.25, AL 0.51-0.54 (9 measured). As holotype.

Type Material

Holotype worker, Madagascar: 40 km. S Ambalavao, Res. Andringitra, 22°13'S, 46°58'E, 1275 m., 15.x.1993, sifted litter (leaf mold rotten wood), montane rainforest #793 (50)-8 (B. L. Fisher) (Museum of Comparative Zoology). Paratypes. 9 workers and 2 ergatogynes with same data as holotype but coded (14)-9, (29)-7, (30)-8, (35)-5, (37)-8, (42)-10, (46)-45 (The Natural History Museum, South African Museum).

References

  • Fisher, B.L. 2000. The Malagasy fauna of Strumigenys. Pp. 612-696 in: Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 691, worker described)

References based on Global Ant Biodiversity Informatics

  • Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65
  • Fisher B. L. 2003. Formicidae, ants. Pp. 811-819 in: Goodman, S. M.; Benstead, J. P. (eds.) 2003. The natural history of Madagascar. Chicago: University of Chicago Press, xxi + 1709 pp.