Odontomachus tyrannicus

Ecological note. This species was relatively common in second-growth forest along the native trail between Sattelberg and Nganduo. Both in this area and at Bisianumu, Papua, workers were found foraging on the ground during the day. A note accompanying van Heurn's Mamberamo series (MCZ) states that this collection was made from a small colony nesting in the soil beneath a fallen palm trunk.

Sumber: Studies on the ant fauna of Melanesia V. The tribe Odontomachini.

0. ferrugineus, laevis nitidus; thorace oblongo, metathorace transversus striata; abdominis pedun-culo unispinoso. Worker. Length 4 lines to the tips of the inaudibles. Ferruginous, very smooth and shining; the head widest at the insertion of the eyes, more than usually so; the usual deep depressions between the eyes and the prominence at the sides of which the antennae are inserted very smooth without the faintest striation, the prominence slightly striated longitudinally; the head deeply emarginate behind; the mandibles finely serrated on their inner margins, and terminating in two stout teeth, which form a fork abruptly bent inwards. The antennae and legs of a paler colour than the body; the metathorax transversely striated, the mesothorax above longitudinally so; the spine on the node of the peduncle of the abdomen short and acute. (Pl. I. fig. 4.)

Sumber: Catalogue of hymenopterous insects collected by Mr. A. R. Wallace in the Islands of Ceram, Celebes, Ternate, and Gilolo.

0. capite thoraceque nigris, antennis abdomineque ferrugineis, margine interno mandibulorum serratalo. Worker. Length 7 lines. Head oblong, narrowed behind, posteriorly deeply emarginate; the mandibles rufo-piceous, brightest at their apex, which is armed with two long teeth which are bent abruptly inwards, their tips black; the anterior portion of the head striated obliquely from the centre; the head, behind the anterior sulcation, very smooth and shining and having a deep longitudinal central depression. Thorax transversely striated, the articulations of the legs and the tarsi ferruginous. Abdomen smooth, shining, and ferruginous; the node of the petiole incrassate, cylindric, and tapering upwards into a very acute spine.

Sumber: Catalogue of hymenopterous insects collected by Mr. A. R. Wallace at the Islands of Aru and Key.