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July 2009 Volume 20 Two - Indigenous Flora and Fauna Association

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A load of Bullants<br />

On a dull, frigid June morning<br />

as a bitter wind scythed through<br />

thin Greybox <strong>and</strong> Yellow Gum<br />

trunks, nearly twenty hardy<br />

Myrmecophiles* converged on<br />

Harkness Road Gilgai Woodl<strong>and</strong>,<br />

Melton.<br />

The y were drawn by<br />

the promise of meeting<br />

‘Myrmecia species 17’<br />

a bullant<br />

listed under<br />

the FFG <strong>and</strong> EPBC<br />

legislation. Our leader, John<br />

Wainer, an ant expert from the Department of Primary<br />

Industry has had a long acquaintance with this species.<br />

The site contains a distinctive variant of the Plains<br />

Woodl<strong>and</strong> EVC (Walters <strong>and</strong> Frood, <strong>20</strong>04) with an<br />

understorey of various Chenopods (the Saltbush family).<br />

Once proposed for a regional cemetery, the 33.4 hectares<br />

has now been re-allocated to the protection of its unique<br />

biodiversity.<br />

John began with some history on our quarry. Bullants<br />

are a uniquely Australian group of ants which retain several<br />

primitive features. Myrmecia sp 17 was first identified by the<br />

late Jenny Barnett on the nearby Long Forest 32 years ago.<br />

The species has remained un-named since, a consequence of<br />

the lamentable lack of ant taxonomists. The suggestion that<br />

the ant’s name might one day commemorate Jenny <strong>and</strong> her<br />

contribution to conservation was warmly received by the<br />

assembly.<br />

In the reserve, a likely nest was soon found <strong>and</strong> John<br />

demonstrated the unsubtle method of stomping loudly near<br />

the entrance to see if anyone were home. No ants responded.<br />

‘Too sensible to get out of bed’ was the consensus of the<br />

shivering human onlookers. A second nest yielded a single<br />

reddish browny bullant — Myrmecia sp. 17! Although minus<br />

one leg, the individual was bundled into a<br />

viewing jar where it was intensely examined<br />

<strong>and</strong> photographed like a diminutive Paris<br />

Hilton.<br />

The crowd could<br />

smell ichor (insect<br />

‘blood’) <strong>and</strong><br />

began to<br />

scatter across<br />

the woodl<strong>and</strong>,<br />

soon discovering<br />

further nests.<br />

Ian Faithfull bravely<br />

allowed an ant to attack<br />

his thick leather gloves. It<br />

used its huge jaws to get a<br />

hold while aiming its sting with<br />

Dalek-like tenacity.<br />

John was particularly keen to locate the<br />

nest of a close relative of species 17, Myrmecia<br />

nigriceps. When M. nigriceps were duly found,<br />

even John struggled to separate the two<br />

very similar ants. M. nigriceps is somewhat<br />

brighter red than ‘17’ with a slightly duller<br />

‘gaster’ (the bulbous final segments of<br />

the abdomen) <strong>and</strong> the head is a smidge<br />

blacker. John then led the search<br />

for further Myrmecia species, soon<br />

locating a few nests of Myrmecia<br />

pyriformis, a h<strong>and</strong>some allblack<br />

species with shiny red<br />

jaws. Maintaining a flow<br />

of fascinating facts, John<br />

discussed partitioning<br />

of resources, that allow<br />

several related ant species to inhabit<br />

the same area. Such research has led to important techniques<br />

using ant assemblages as indicators of biodiversity. Myrmecia,<br />

although tolerant of disturbance, are dependant on treed<br />

habitats <strong>and</strong> are slow to recolonise deforested sites due to low<br />

reproductive rates.<br />

Other ants included Meat-ants, Iridomymex purpureus,<br />

with their huge gravel strewn nests <strong>and</strong> two kinds of the<br />

mid-size Camponotus (Honeypot) ants.<br />

Myrmecia nigriceps<br />

Species 17<br />

INDIGENOTES VOLUME <strong>20</strong> NUMBER 2 3

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