Tetraponera convexa

Every Ant Tells a Story - And Scientists Explain Their Stories Here
Jump to navigation Jump to search
Tetraponera convexa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Pseudomyrmecinae
Genus: Tetraponera
Species: T. convexa
Binomial name
Tetraponera convexa
Xu, Z. & Chai, 2004

Tetraponera convexa casent0235339 p 1 high.jpg

Tetraponera convexa casent0235339 d 1 high.jpg

Specimen Labels

Known from a mountain rain forest and warm conifer forest collection.

Identification

A member of the Tetraponera allaborans species-group.

Xu & Chai (2004) - Close to Tetraponera allaborans, but median lobe of clypeus very short and indistinct, anterior margin straight and without teeth. Pronotum strongly convex. Scape relatively shorter with SI 64-67. Petiole relatively longer with PLI 35-40.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Palaearctic Region: China (type locality).


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.

  • convexa. Tetraponera convexa Xu & Chai, 2004: 69, figs. 33-37 (w.) CHINA.

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

Description

Worker

Holotype worker. TL 5.7, HL 1.13, HW 0.87, CI 76, SL 0.57, SI 65, PW 0.63, AL 1.67, EL 0.37, REL 32, PDH 0.52, MTW 0.50, PDT 103, PL 0.87, PH 0.35, DPW 0.28, PLI 40, PWI 33. Head rectangular, distinctly longer than broad. In full face view, occipital margin straight, occipital corners rounded. Anterior half of lateral side weakly concave, posterior half moderately convex. Head broadest at the position of posterior margins of eyes, narrowed forward and backward. Mandible narrow and slender, with 3 teeth on the masticatory margin and 2 denticles on the basal margin. Median lobe of clypeus narrow and very short, indistinct, anterior margin straight, without teeth. Apex of scape reached to 4/7 of the distance from antennal socket to occipital corner. Eyes larger, slightly surpassed lateral sides of head. Ocelli absent. In profile view, pronotum strongly convex, lateral margins distinct. Mesonotum nearly straight and slope down backward, posterior end down curved. Metanotal groove widely and deeply impressed. Anterior face of propodeum short and sloped, dorsum weakly convex and slope down backward, posterodorsal corner rounded, declivity relatively straight and about equal to dorsum. In dorsal view, pronotum narrowed backward, humeral corners roundly prominent. Metanotum raised up as a longitudinal central ridge between the spiracles. In posterior view, pronotum roundly convex, lateral margins distinct and bluntly angled. In profile view, anterior peduncle of petiole slender and weakly down curved, ventral face weakly concave, petiolar node roundly convex and symmetrical. Postpetiolar node lower than petiolar node.

Mandibles finely and longitudinally striate on basal half, coarsely and longitudinally striate on apical half. Head, pronotum and mesonotum very sparsely and finely punctate, interspace smooth. Lateral sides of pronotum smooth. Mesopleuron, metapleuron and lateral sides of propodeum weakly, finely and longitudinally rugulose. Metanotal groove with short longitudinal ridges. Petiole, postpetiole and gaster smooth. Dorsum of anterior peduncle of petiole densely and finely punctate. The whole body with abundant decumbent pubescences, standing hairs very sparse: 2 pairs on frontal carinae, 1 pair on vertex, 2 pair on pronotum, 1 pair on petiole and 1 pair on postpetiole. Mesonotum and propodeum lack standing hairs. Gaster with sparse erect hairs. Scapes and tibiae with sparse suberect hairs and dense subdecumbent pubescences. Body color black. Mandibles, antennae, tibiae and tarsi brownish yellow. Clypeus and femora brownish black.

Paratype workers. TL 5.2-6.0, HL 1.03-1.10, HW 0.80-0.87, CI 76-79, SL 0.53-0.57, SI 64-67, PW 0.57-0.60, AL 1.47-1.63, EL 0.37-0.40, REL 34-36, PDH 0.47-0.50, MTW 0.47-0.50, PDI 93-100, PL 0.80-0.90, PH 0.30-0.35, DPW 0.25-0.30, PLI 35-40, PWI 31-35 ( 6 individuals measured). As holotype.

Type Material

Holotype. worker, No.A97-975, 1120m, Xishuangbanna Nature Reserve, Guanping Village, Dadugang Town, Jinghong County, Yunnan Province, 7 Aug. 1997, collected by Mr. Liu TaiYong in the mountain rain forest. Southwest Forestry University, Kunming, China

Paratypes. Xishuangbanna Nature Reserve, Yunnan Province, 7 workers, with same data as holotype; 2 workers, No. A98-62, 1 270m, Songshanling, Puwen Town, Jinghong County, 4 Mar. 1998, collected by Mr. He Yun-Feng in the warm conifer forest.

References