Crematogaster aurita

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Crematogaster aurita
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Crematogaster
Species: C. aurita
Binomial name
Crematogaster aurita
Karavaiev, 1935

Crematogaster-aurita-lateral-am-lg.jpg

Crematogaster-aurita-am-lg.jpg

Specimen Label

Crematogaster ampullaris workers have been found foraging on a tree trunk in a dipterocarp forest.

Identification

A member of the subgenus Physocrema. Hosoishi and Ogata (2009) - This species is similar to Crematogaster inflata in the coloration, but can be distinguished by the rugulae on the clypeus and the sculptured body.

Keys including this Species

Distribution

Hosoishi and Ogata (2009) - This species is known from Indochinese Peninsula; Vietnam (southern parts), Laos, Cambodia, and Thailand (except for southern parts).

Distribution based on Regional Taxon Lists

Oriental Region: Cambodia (type locality), Laos, Thailand, Vietnam.

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.

  • aurita. Crematogaster (Physocrema) aurita Karavaiev, 1935a: 92, fig. 18 (w.) CAMBODIA. See also: Hosoishi & Ogata, 2009b: 20.

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

Description

Worker

Hosoishi and Ogata (2009) - HW 0.95–1.84; HL 0.89–1.8; CI 102–110; SL 0.91–1.4; SI 76–96; EL 0.22–0.34; PW 0.5–1.04; WL 1.07–2.13; PSL 0; PtL 0.31–0.62; PtW 0.23–0.48; PtH 0.16–0.32; PpL 0.18–0.42; PpW 0.26–0.49; PtHI 50–52; PtWI 74–80; PpWI 117–146; WI 100–112 (Three workers measured).

Workers with pronounced size polymorphism.

Scape of large workers not reaching posterior corner of head.

In lateral view, pronotum and mesonotum forming a single convexity; mesonotum differentiated from pronotum in large workers; propodeum slightly raised relative to promesonotum. Anterior margin of pronotal collar slightly concave in dorsal view. Metanotal groove almost straight in dorsal view, not so deep and situated slightly posterior to the posterior ridge of pronotum in lateral view; thorax not strongly constricted in middle in dorsal view. In dorsal view, no longitudinal rugulae connecting between mesonotum and propodeum; the boundary distinct. Propodeal spiracle situated near the metapleural gland orifice, the distance between them about the same as the propodeal spiracle diameter. Propodeal spines absent.

Clypeus sculptured with longitudinal rugulae. Dorsal face of head covered with abundant longitudinal rugulae. Propodeal and metapleural area more or less smooth and shining in small workers, but distinctly rugulose and punctate in large workers.

Standing pilosity abundant, some pairs on dorsal face of head and abundant on dorsal portion of mesonotum. Dorsal face of head with appressed setae. Clypeus with short and long setae. Fourth abdominal tergite with suberect and appressed setae.

Body bicolored with head, promesonotum, petiole, postpetiole, gaster and legs dark-brown and with metanotal and propodeal area red-brown.

Type Material

Hosoishi and Ogata (2009) - Lectotype and two paralectotypes from CAMBODIA: Pursat, “Westufer des Grand lac”, 10. iii. 1930, Nr 5778 (K. Davydov) (UASK) [examined].

References