Camponotus triodiae

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Camponotus triodiae
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Camponotus
Species: C. triodiae
Binomial name
Camponotus triodiae
McArthur, 2009

Camponotus triodiae major p.jpg

These ants have been found associated with bushes of Triodia species commonly known as spinifex in northern South Australia. The ant constructs a tube made from vegetation and red soil. (McArthur 2009)

Identification

McArthur (2009) - Closely related to Camponotus michaelseni from Western Australia, C. triodiae is distinguished by its scapes having plentiful short setae raised up to about 30° whereas in C. michaelseni the scapes have indistinct short decumbent setae.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Ground nest entrance.

Castes

Worker

Nomenclature

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

  • triodiae. Camponotus triodiae McArthur, 2009: 284, figs. 14-18 (w.) AUSTRALIA.

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

Description

Worker

HL =0.72 * HW + 0.74 (R2 = 0.98, n = 10), PW = 0.34 * HW + 0.92 (R2 = 0.93, n = 10), FCW = 0.22 * HW + 0.14 (R2 = 0.98, n = 10).

Major worker. Mesosoma in pro-file: dorsum of pronotum mostly flat with feeble anterior-lateral margins, mesonotum flat anteriorly and posteriorly with a convexity between, metanotum about 0.2 mm long, bounded anteriorly and posteriorly by fine troughs, propodeal dorsum straight short, propodeal angle well rounded about 135°, declivity long mostly straight with slight central angle, PD / D ~ 5; dorsum of mesosoma with < 5 long erect reddish setae, short decumbent setae very sparse; in-tegument on side of mesonotum and propodeum, reticulate, side of head smooth glossy. Petiolar node: anterior face feebly convex, posterior face straight, summit sharp. Tibiae without distinct short setae, with > 10 erect spines on posterior surface; scapes with distinct short setae raised to 30°. Head: underside in lateral view with 0 to 3 long erect setae; erect setae sparse in frontal view; sides feebly convex, strongly tapering anteriorly; vertex straight; FCW < HW / 3; maximum head width at about eye centres; clypeus anterior margin projecting, crenate with 135° corners, feebly concave between. Colour: mostly black, legs lighter. Minor worker. Mesosoma in profile: dorsum of pronotum mostly flat with strong anterolateral margins, mesonotum convex, metanotum indistinct, propodeal dorsum straight and short, propodeal angle well rounded about 135°, declivity long mostly straight with a central 170° angle, PD / D ~ 4; dorsum of mesosoma with < 5 long erect reddish setae, short decumbent setae very sparse; integument on side of mesonotum and propodeum, reticulate, side of head smooth glossy with indistinct striations. Petiolar node: anterior face convex, posterior face straight, summit sharp. Tibiae with indistinct short setae, with > 10 erect spines on posterior surface; scapes with distinct short setae raised to 30°. Head: underside in lateral view with 0 to 3 long erect setae; erect setae sparse in frontal view; sides straight, strongly tapering anteriorly; vertex straight; FCW < HW / 3; maximum head width posterior to eye centres; clypeus anterior margin projecting feebly crenate with 135° corners, mostly straight between. Colour: mostly black, legs lighter.

Type Material

Holotype (South Australian Museum): pinned minor worker “S. Aust. Uno Stn. 4.4Km NW Harris Bluff 32° 40'16S 136° 43'08E 11 Nov 2008 From burrow P Hudson & P Fennell”. One major worker (paratype) from same nest mounted on same pin. Paratypes with same labels pinned in SAMA, Australian National Insect Collection and Naturhistorisches Museum Wien, Vienna. SAMA has 10 specimens in alcohol.

References