Strumigenys agetos

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Strumigenys agetos
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. agetos
Binomial name
Strumigenys agetos
Fisher, 2000

Strumigenys agetos casent0005475 profile 1.jpg

Strumigenys agetos casent0005475 dorsal 1.jpg

Specimen labels

The type material was found under a stone in a "low closed forest."

Identification

Bolton (2000) - A member of the Strumigenys godeffroyi-group. Among the Malagasy region species which have a cylindrical scape but lack a preocular notch, agetos is immediately recognized by its dentition.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Malagasy Region: Madagascar, Mauritius (type locality).


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Nomenclature

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

  • agetos. Strumigenys agetos Fisher, in Bolton, 2000: 646, figs. 390, 413 (w.) MAURITIUS.

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 3.3, HL 0.75, HW 0.60, CI 80, ML 0.32, MI 42, SL 0.45, SI 75, PW 0.36, AL 0.84. Mandible in full-face view with the outer margins shallowly and evenly convex, the width approximately constant from the level of the preapical tooth to near the base where the mandibles are somewhat narrowed. Apical fork with 1 or 2 intercalaries; either both with 2, or left mandible with 2 intercalary denticles and right mandible with a small intercalary tooth. Anterior clypeal margin broadly concave and with a row of short hairs that are curved ventrally at more or less right angles. Upper scrobe margins more or less straight and shallowly divergent posteriorly. Hairs that fringe upper scrobe margin slender and similar in shape to those on leading edge of scape, terminating in an erect filiform hair in apicoscrobal position. Eye large, with about 20 ommatidia, the maximum diameter of the eye distinctly greater than the maximum width of the scape. Cephalic dorsum with curved narrowly spatulate ground-pilosity on anterior two-thirds; simple standing hairs present along posterior margin of head and with 1-2 more anteriorly situated pairs. Pronotal dorsum with several pairs of simple hairs; mesonotum with a pair of standing hairs on anterior margin. Posterior portion of mesonotum depressed behind the level of the standing hairs. Propodeal teeth triangular and incorporated in broad lamellae. Sides of alitrunk reticulate-punctate peripherally, the pleurae mostly smooth. Pronotal dorsum reticulate-punctate and longitudinally feebly rugulose. Remainder of dorsal alitrunk reticulate-punctate. Petiole node in dorsal view reticulate-punctate and distinctly longer than broad. Postpetiole smooth and shining. Spongiform appendages of waist segments well developed, the petiole with a medially impressed ventral curtain and conspicuous lateral lobe on the node. Postpetiole with large lateral and ventral spongiform lobes of which the ventral is the larger, larger than the exposed area of the postpetiole disc in profile. Basigastral costulae arising continuously across tergite, longer than disc of postpetiole; remainder of first gastral tergite smooth. Dorsal surfaces of petiole, postpetiole and gaster with simple standing hairs.

Paratypes. TL 3.1-3.3, HL 0.73-0.76, HW 0.56-0.60, CI 77-80, ML 0.30-0.33, MI 40-43, SL 0.43-0.45, SI 73-80, PW 0.34-0.37, AL 0.78-0.85 (8 measured). As holotype.

Type Material

Holotype worker, Mauritius: Le Pouce 700 m., 20°12'S, 57°31'E, 9.iv.1989, under stone, low closed forest #10260 (P. S. Ward) (Museum of Comparative Zoology).

Paratypes. 8 workers with same data as holotype (The Natural History Museum, South African Museum, University of California, Davis).

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 646, worker described)