Tetheamyrma subspongia

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Tetheamyrma subspongia
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Tetheamyrma
Species: T. subspongia
Binomial name
Tetheamyrma subspongia
Bolton, 1991

Tetheamyrma subspongia casent0101593 profile 1.jpg

Tetheamyrma subspongia casent0101593 dorsal 1.jpg

Specimen labels

The type specimens, making up 2/3 of all the known samples of this species (and the genus), consists of two workers that were collected from a single Winkler Bag sample of forest leaf litter.

Identification

The only species in the genus, Tetheamyrma belongs in the Rogeria-Stenamma-group of genera, based on the structure of the mandibles and clypeus, and the form of the alitrunk. It is isolated among these, however, by its combination of 11-segmented antennae with a 2-segmented club, and the presence of spongiform material on the waist and gaster. (Bolton 1991)

Distribution

Distribution based on Regional Taxon Lists

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

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Known only from the worker caste.

Nomenclature

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

  • subspongia. Tetheamyrma subspongia Bolton, 1991: 10, figs. 16, 17 (w.) BORNEO.

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 2.3, HL 0.55, HW 0.51, CI 92, SL 0.32, SI 63, PW 0.36, AL 0.66. Maximum diameter of eye 0.08 (0.16 x HW), the eye with only about 10 ommatidia in total. Mandibles smooth. Head capsule everywhere extremely finely and densely sharply reticulate-rugose and with dense short soft curved pilosity. Promesonotum sculptured as head. Sloping propodeal dorsum sculptured to level of spines but declivity thereafter smooth and shining. Petiole and postpetiole both much broader than long in dorsal view and more finely sculptured than the promesonotum. Gaster smooth and shining between conspicuous pits from which hairs arise. All dorsal surfaces of alitrunk, waist and gaster with dense soft curved pilosity except for the propodeum behind its highest point, which lacks hairs. Colour medium brown, the appendages lighter.

Paratype. TL 2.2, HL 0.54, HW 0.49, CI 91, SL 0.30, SI 61, PW 0.35, AL 0.62. Maximum diameter of eye 0.07 (0.14 x HW). As holotype.

Type Material

Holotype worker, East Malaysia: Sabah, Poring Hot Springs, Langanan River, 850 m, 14.v.87, no. 25a (Lobl & Burckhardt) (Musee d'Histoire Naturelle Genève). Paratype, one worker with same data as holotype (The Natural History Museum).

References