Tetraponera connectens

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Tetraponera connectens
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Pseudomyrmecinae
Genus: Tetraponera
Species: T. connectens
Binomial name
Tetraponera connectens
Ward, 2001

Tetraponera connectens casent0902826 p 1 high.jpg

Tetraponera connectens casent0902826 d 1 high.jpg

Specimen Labels

Only known from the type locality, the types were collected from canopy fogging of semi-primary dipterocarp hilltop forest.

Identification

A member of the Tetraponera allaborans species-group.

Ward (2001) - This species bears some similarity to Tetraponera bita, especially with respect to the short scapes, elongate head, laterally rounded pronotum, broad profemur, and small size, but it lacks the distinct metanotal plate and broadly convex median clypeal lobe of that species. T. connectens workers differ from those of both T. bita and other small black species (Tetraponera extenuata, Tetraponera microcarpa) by their smaller eyes (REL 0.32-0.34, v. 0.35-0.41 in the other three species). In addition, workers of T. microcarpa have much sharper lateral pronotal margins and those of T. extenuata have longer scapes (SI2 0.4 7-0.54), a more slender profemur (FI 0.38--0.43), and more elevated propodeum (PDI 1.12-1.24) compared with those of T. connectens. The smallest workers of Tetraponera allaborans approach the known size range of T. connectens (for T. allaborans HW 0.62-0.93 and LHT 0.54-0.80) but have larger eyes (EL 0.30-0.42 compared with 0.26-0.27 in T. connectens), longer scapes (SI2 0.46-0.57 v. 0.42-0.45) and a more slender profemur (FI 0.36-0.45 v. 0.47-0.48; FLIHL 0.58-0.67 v. 0.52-0.56 in T. connectens), in addition to better developed pronotal margins.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Oriental Region: Thailand (type locality).


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.

  • connectens. Tetraponera connectens Ward, 2001: 611, figs. 13, 24, 49 (w.) THAILAND.

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

Description

Worker

HW 0.58--0.63, HL 0.77-0.84, LHT 0.50-0.52, CI 0.73-0.78, FCI 0.12-0.13, REL 0.32-0.34, REL2 0.44-0.45, SI 0.57--0.58, SI3 1.29-1.33, FI 0.47-0.48, PLI 0.56-0.61, PWI 0.43--0.46, PDI 0.97-1.04, LHT/HW 0.83-0.87, CSC 2, MSC4.

Median clypeal lobe narrow, protruding beyond the reach of the anterolateral clypeal margins, and furnished with three blunt teeth; eyes rather small (REL <0.35); profemur short and broad (FI >0.46); pronotal dorsum rounding into the sides, sharp lateral margins lacking; mesopropodeal impression with a very weak transverse ridge (obsolete in three of the workers) which interrupts the longitudinally rugulate sculpture but does not form a distinct metanotal plate; propodeum low and broad, as wide as high (see PDI values), in profile its dorsal face convex and rounding rather gradually into the declivitous face; petiole relatively short and broad (see indices). Integument smooth and shining, with scattered fine punctures (<0.01 mm diameter) and faint irregular lineations; lower malar area longitudinally carinate, only immediately above the mandibular insertions. Standing pilosity (>0.06 mm in length) sparse, scattered on gaster and apex of head, and as follows: one supraocular pair, two pairs on the pronotum, and one pair each on the petiole and postpetiole; sparse, inconspicuous appressed hairs scattered over the body, becoming suberect to erect on venter of the petiole and postpetiole. Black to dark brownish-black; antennae, mandibles, tarsi and (to a lesser extent) tibiae lighter brown.

Type Material

Holotype. Worker, Khao Lak Natl Pk, Thone Chong Fa Fall, Thailand, 300m, 8°40'N 98°18'E, 15-16.i.1998 (A. Schulz & K. Vock) (The Natural History Museum). Paratypes. 5 workers, same data as ho1otype (KUBC, Naturhistorisches Museum Wien, Vienna, Philip S. Ward Collection).

References