Heteroponera viviennae

Known only from the Cape Tribulation area. Most samples are of a single worker collected by Berlese funnel from rainforest leafmould or litter. Sympatric with the similarly bicolored Heteroponera rhodopygea at Roaring Meg Creek, and with Heteroponera rhodopygea and Heteroponera wilsoni in the Cape Tribulation area and at Mc Dowall Creek.

Identification Keys including this Taxon

 * Key to Australian Heteroponera Species

Distribution based on Regional Taxon Lists
Australasian Region: Australia.

Nomenclature

 * . Heteroponera viviennae Taylor, 2015b: 167, figs. 22-25 (w.) AUSTRALIA (Queensland).
 * Type-material: holotype worker, paratype workers (number not stated).
 * Type-locality: holotype Australia: Queensland, 1.5 km. E by N Mt Sorrow, -16 05, 145 27, 25.iii.1984, ANIC berlesate 945, rainforest, stoney slope (A. Calder & T.A. Weir); paratype workers with same data.
 * [Note: several other localities are also provided, all in the Cape Tribulation area, but there is no statement concerning which are paratypes, and no statement that all are paratypes; therefore only those from the type-locality are recorded here.]
 * Type-depositories: ANIC (holotype); ANIC, QMBA (paratypes).
 * Distribution: Australia.

Worker
Antennal scrobes smooth and shining with slight minute surface rippling. Propodeal declivity smooth and shining, the area reduced in size compared to other species, its borders barely raised; posterior face of petiolar node smooth and shining, merging above with the similarly unsculptured dorsum. Head relatively large and broad; eyes more protrusive in frontal view than in other species. Mesosoma relatively short and dorsally inflated—its profile with an almost semicircular dorsal arc in lateral view. Humeral epaulets well developed. Petiole relatively short and broad in lateral view, approximately as long as high, rounded above in profile. (Holotype; smallest available specimen, largest available specimen): TL (ca): 4.4, 4.4, 4.8; HW: 1.11, 1.07, 1.19; HL: 1.01, 0.99, 1.11; CI: 104, 108, 107; EL: 0.21, 0.20, 0.23; SL: 0.64, 0.62, 0.66; SI: 57, 58, 55; PW: 0.79, 0.74, 0.82; WL: 1.25, 1.25, 1.33; petH: 0.72, 0.65, -., petW: 0.45, 0.45, 0.49; GW 0.80, 0.77, 0.88.

Type Material
Australia: Queensland: 1.5km E by N of Mt Sorrow -16 05, 145 27. Holotype. Paratypes in ANIC,.

Etymology
Named for my late friend Vivienne Awford.