Giant Red Bull Ant
Giant Brown Bull Ant
Toothless Bull Ant
Jumper Ant
Giant Jumper Ant
Gilden-tail Bull Ant 
Baby Bull Ant
Tree Ants 
Black Valentine Ant
Bicoloured Pennant Ant
Muscleman Tree-ant
Yellow Shield Ant
Brown Shield Ant 
Green-headed Ant
Green Metallic Ant
Michelin Ant
Painted Strobe Ant
Black-headed Sugar Ant
Banded Sugar Ant
Orange-tailed Sugar Ant
Golden-tailed Sugar Ant
Dark Brown Sugar Ant 
Small Brown Sugar Ant
Furnace Ant 
Large Purple Meat Ant
Red-headed Tyrant Ant
Black Tyrant Ant
Brown Tyrant Ant 
Red Spider Ant
Black Spider Ant
Large Dolly Ant
Small Dolly Ant
Spiny Dolly Ant 


Black Valentine Ant - Crematogaster laeviceps

Subfamily Myrmicinae 

This page contains pictures and information about Black Valentine Ants that we found in the Brisbane area, Queensland, Australia.
Body length 5mm 
Those ants have the heart-shaped gaster so their name Valentine Ants. They are usually found on plants. They are generalist predators and tending Hemiptera and the caterpillars of butterflies in family Lycaenidae.
wpe1B.jpg (22286 bytes) wpe17.jpg (31484 bytes) DSC_6776.jpg (69764 bytes)
In the pictures above, those ants are attending the aphids for the honeydew. The aphids suck the plant juice. Within the juice, there are water and sugar more than the aphids' need. They are excreted as honeydew. 
wpe5.jpg (40009 bytes) wpe27.jpg (40155 bytes) DSC_3856.jpg (184371 bytes)
Crematogaster is a common genera. Some species are black and some are brown with black abdomen. They are usually found as workers in large group. They are quite aggressive and will attack when disturbed.   
DSC_4313a.jpg (118041 bytes) DSC_4314.jpg (131471 bytes) DSC_7664.jpg (70777 bytes)
They have well-developed chemical defenses and are avoided by most insects and other animals. They nest in soils, in cracks or on tree trunks. Their colonies are medium in size, with a few thousands of workers.
DSCN1327.jpg (191867 bytes) 

1. Northern Territory Insects, A Comprehensive Guide CD - Graham Brown, 2009. 
2. Australian Ants: Their Biology and Identification - S Shattuck, Natalie J Barnett, CSIRO, 1999, p132.

Back to Top

Up ] [ Valentine Ant ] Bicoloured Pennant Ant ] Muscleman Tree-ant ] Yellow Shield Ant ] Brown Shield Ant ]


Fire Ants - We are suffering the Fire Ants problem. 
The Red Imported Fire Ant, Solenopsis invicta, is a serious new pest which has been detected in Brisbane, Queensland. 
They can be the greatest ecological threat to Australia. More information please visit our Government Fire Ants web site.

See us in our Home page. Download large pictures in our Wallpaper web page. Give us comments in our Guest Book, or send email to us. A great way to support us is to buy the Data-DVD from us.  
Last updated: April 12, 2010.