Strumigenys euryale

Every Ant Tells a Story - And Scientists Explain Their Stories Here
Jump to navigation Jump to search
Strumigenys euryale
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. euryale
Binomial name
Strumigenys euryale
(Bolton, 2000)

Pyramica euryale casent0102601 profile 1.jpg

Pyramica euryale casent0102601 dorsal 1.jpg

Specimen labels

Nothing is known about the biology of Strumigenys euryale.

Identification

Bolton (2000) - A member of the Strumigenys leptothrix-group. Strumigenys euryale is immediately identified by its unique clypeal crest. Its propodeum, with sharp spines subtended by a carina rather than a lamella, also occurs in Strumigenys rudinodis (see there) and its allies. In these species, however, the propodeal lobes are acutely triangular, whereas in euryale the propodeal lobes are low and broadly rounded. A similar propodeal structure is seen only in Strumigenys stheno, but this is a densely hairy species with a shallowly convex clypeus and a row of straight simple long hairs project forward at right-angles to the leading edge of the scape.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo, Indonesia, Malaysia (type locality), Philippines.


Distribution based on AntMaps

AntMapLegend.png

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.

  • euryale. Pyramica euryale Bolton, 2000: 432, fig. 272 (w.) BORNEO. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 119

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 2.8, HL 0.76, HW 0.50, CI 66, ML 0.05, MI 7, SL 0.36, SI 72, PW 0.30, AL 0.78. Anterior half of clypeal dorsum with its centre raised into a high median longitudinal crest that is densely clothed with spatulate hairs. In full-face view the upper scrobe margin with a row of anteriorly curved appressed small spatulate hairs; without freely projecting long hairs of any form. Dorsolateral margin of occipital lobe, behind the level of the scrobe, with 2 freely projecting long simple hairs that curve anteriorly. Cephalic dorsum behind clypeus finely rugulose to reticulate-rugulose; spaces between rugular sculpture on vertex with weak punctulate ground-sculpture. Leading edge of scape with apically-directed minute appressed hairs only. Eye with 4 ommatidia in longest row. Dentition discussed in introduction to group. With head i n profile the dorsum without standing hairs except for a single transverse row close to the occipital margin. Pronotum sharply marginate dorsolaterally, with a long simple humeral hair and 1-2 others arising from the margin; dorsum between the marginations more or less flat, with scattered longitudinal rugulae and without elongate standing hairs. Dorsum of mesonotum with 3 pairs of simple standing hairs, the posteriormost pair almost at the metanotal groove. Dorsal (outer) surfaces of middle and hind tibiae with freely projecting simple hairs, the longest of them about equal to the maximum tibial width or only very slightly more. Similar hairs also arise from the femora. Propodeum armed with a pair of short acute spines that are subtended by narrow carinae; these terminate at the base of the declivity in a pair of low rounded propodeal lobes that are not laminate nor spongiform. Side of alitrunk mostly unsculptured but irregular, and with a few transverse rugulae on the mesopleuron. Lateral spongiform lobe of petiole restricted to posterolateral portion of node, distinctly not extending to level of anterior face of node.

Paratypes. TL 2.8-3.0, HL 0.76-0.81, HW 0.48-0.52, CI 63-67, ML 0.04-0.06, MI 5-8, SL 0.34-0.37, SI 71-79, PW 0.30-0.34, AL 0.78-0.86 (7 measured). As holotype but eye with 4-5 ommatidia in the longest row. Dorsolateral margin of occipital lobe with 1-3 laterally projecting elongate curved simple hairs.

Type Material

Holotype worker, Malaysia: Sabah, Crocker Range, 1600 m., 18.v.1987, no. 30a (Lobl & Burckhardt) (Musee d'Histoire Naturelle Genève). Paratypes. 13 workers with same data as holotype; 2 workers with same data but Crocker Range, K.K. - Tambunan, no. 30; 1 worker, Sabah, Mt Kinabalu, Liwagu Trail, 1500 m., 21.v.1987, no. 34a (Lobl & Burckhardt) (MHN, The Natural History Museum, Museum of Comparative Zoology, Australian National Insect Collection).

References

  • Baroni Urbani, C. & De Andrade, M.L. 2007. The ant tribe Dacetini: limits and constituent genera, with descriptions of new species. Annali del Museo Civico di Storia Naturale “G. Doria” 99:1-191.
  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 432, fig. 272 worker described)