Tetramorium chapmani

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Tetramorium chapmani
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Tetramorium
Species: T. chapmani
Binomial name
Tetramorium chapmani
Bolton, 1977

Tetramorium chapmani casent0901101 p 1 high.jpg

Tetramorium chapmani casent0901101 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Tetramorium chapmani.

Identification

Bolton (1977) - A very conspicuous species, chapmani is closely related to Tetramorium khnum, also of the Philippines. The two are easily distinguished as khnum lacks the gastral sculpture characteristic of chapmani.

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Philippines (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.

  • chapmani. Tetramorium chapmani Bolton, 1977: 120, fig. 46, 47 (w.) PHILIPPINES.

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 3.5, HL 0.80, HW 0.76, CI 95, SL 0.56, SI 74, PW 0.58, AL 0.96.

Mandibles striate; anterior clypeal margin entire. Frontal carinae long and strongly developed, reaching back almost to the occipital corners and surmounted by a narrow but quite distinct raised ridge or flange to behind the level of the eyes. Antennal scrobes conspicuous, extending back almost to the occipital corners. Maximum diameter of eye c. 0.14, the eyes situated in front of the middle of the sides of the head. Sides of head weakly convex, the occipital margin strongly impressed medially. Dorsum of alitrunk evenly convex in profile, the propodeal spines of moderate length, narrow, straight and acute. Metapleural lobes broadly triangular, acute apically. Shape of petiole and postpetiole, in profile as shown in Fig. 47. In dorsal view the petiole node globular. Entire dorsum of head from posterior clypeal margin to occiput covered with a dense, quite coarse rugoreticulum, the meshes of which are sharply defined and raised; the spaces enclosed by the meshes mostly smooth, at most with only vestigial ground sculpture. Area of antennal scrobes predominantly punctulate, with very reduced rugulae, contrasting strongly with the dorsum. Entirety of dorsal alitrunk, petiole and postpetiole sculptured as dorsum of head, but the pedicel segments rather less conspicuously so. Basal half of first gastral tergite densely and strongly longitudinally striate, the spaces between the striae with superficial punctulation. First gastral sternites sculptured but less strongly than the tergite. Relatively short, fine hairs numerous on all dorsal surfaces of head and body but hairs on scapes and dorsal (outer) surfaces of hind tibiae universally short, decumbent. Colour uniform orange-brown but the tibiae yellow-brown, distinctly lighter in colour than the femora.

Paratypes. As holotype but showing colour variations from orange-yellow to light reddish brown but always with the contrasting femoral-tibial colours. Range of dimensions are TL 3.2-3.5, HL 0.74-0.80, HW 0.72-0.78, CI 95-98, SL 0.54-0.60, SI 72-79, PW 0.54-0.60, AL 0.90-0.96 (13 measured).

Type Material

Holotype worker, Philippines: Dumaguete, Silliman University, xii.1950 (Domingo Empeso) (Museum of Comparative Zoology). Paratypes. 13 workers with same data as holotype (MCZC; The Natural History Museum; Naturhistorisches Museum, Basel).

References