Harpegnathos venator

Harpegnathos venator

''Harpegnathos venator'' is a species of ant found in South and Southeast Asia. It is found in northern India and parts of Burma.
Ponerinae Harpegnathos venator I found a very aggressive ant, chewing on a spider. Its mandibles were long and menacing, with a barb. Unfortunately, I only managed one shot before I lost the specimen in the undergrowth.

From the image, the defining features are the long mandibles and the huge eyes, giving excellent eyesight. The specimen was clearly identified as family Ponerinae.

The Alex Wild site, which I have found very reliable, gave me genus of Harpegnathos.
http://www.alexanderwild.com/

AntWiki gave me a list of eleven species with pics and regional information.
http://www.antwiki.org/wiki/Category:Harpegnathos_species

The three possible species that were close in color, form and region were; venator and hobbyi. The brown tint on hobbyi, and the shape at the back of the head were not right, and a good match with venator. I am comfortable with this ID.

Another good site is Tom Fayle’s PDF, page 18, which confirmed the genus of Harpegnathos.
http://www.tomfayle.com/Key to the ant genera of Borneo v1 (English-Malay).pdf

As ants go, this was an exciting find, but identifying ants is always tedious and sends me to sleep. Fortunately there are a few very good ant enthusiasts out there, who have generously shared their knowledge.

Location is Bandung, West Java, Indonesia. Alongside a stream and paddy fields.
http://www.jungledragon.com/image/37686/ponerinae_harpegnathos_venator.html Bandung,Geotagged,Harpegnathos venator,Indonesia,Java,Ponerinae,Spring,West Java,ant

Appearance

The followings is a taxonomic description of the ant based on C. T. Bingham's ''The Fauna of British India, Including Ceylon and Burma'' :
⤷  worker: Black ; mandibles, clypeus, antennal carinae and legs brownish yellow, antennae chestnut, apex of the abdomen rusty; head and thorax closely coarsely cribrate punctate ; abdomen finely densely reticulate punctate, opaque, with some large shallow punctures. Head, thorax and abdomen covered with rather sparse, short, erect pale hairs ; pubescence minute but fairly plentiful, to be seen only in certain lights. For the rest the characters of the genus.
⤷  queen: Similar to the worker, but the abdomen with long oblong punctures, the ocelli in the middle of the front. Thorax and abdomen more massive and as in ''Harpegnathos saltator''.
⤷  male: Mandibles broad at the base, attenuate, narrow and slender towards the apex, which is directed forwards. Head rectangular, somewhat rounded, broader than long. Eyes rather smaller than in the queen. A short depression between the mesonotum and scutellum, bordered by carinae and strongly striate inside. Smooth and shining, except for the thorax, which is coarsely rugose, punctate or striate . Covered by a fine yellowish pilosity, dense on the legs, less abundant elsewhere. Pubescence very sparse. The 1st abdominal segment is pyriform and has the appearance of forming a 2nd node to the pedicel, a slight constriction between the 2nd and 3rd segments. Thorax and pedicel of a brownish black, head and basal segment of the abdomen reddish yellow. Best of the abdomen yellow with a tinge of red. Legs and antenna) very pale testaceous.
Ponerinae Harpegnathos venator Here is a close-up crop of the head.

Location is Bandung, West Java, Indonesia. Alongside a stream and paddy fields.
http://www.jungledragon.com/image/37687/ponerinae_harpegnathos_venator.html Bandung,Geotagged,Harpegnathos venator,Indonesia,Java,Ponerinae,Spring,West Java,ant

Naming

*''Harpegnathos venator chapmani'' Donisthorpe, 1937
⤷ ''Harpegnathos venator rugosus''

References:

Some text fragments are auto parsed from Wikipedia.

Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassInsecta
OrderHymenoptera
FamilyFormicidae
GenusHarpegnathos
SpeciesH. venator
Photographed in
Indonesia