''Strumigenys lacunosa'' is a species of reddish-brown

ant Ants are eusocial insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from vespoid wasp ancestors in the Cretaceous period. More than 13,800 of an estimated total of 22 ...

up to 3.4 mm in length. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...

. This species can be distinguished from all congeners by the ornate

lacunose A lacuna ( lacunae or lacunas) is a gap in a manuscript, inscription, text, painting, or musical work. A manuscript, text, or section suffering from gaps is said to be "lacunose" or "lacunulose". Weathering, decay, and other damage to o ...

sculpturing on the head,

mesosoma The mesosoma is the middle part of the body, or tagma, of arthropods whose body is composed of three parts, the other two being the prosoma and the metasoma. It bears the legs, and, in the case of winged insects, the wings. In hymenopterans of t ...

, petiole and postpetiole which gives the ant its specific name.

References

Myrmicinae Insects described in 1996 Endemic fauna of Taiwan Insects of Taiwan Hymenoptera of Asia {{myrmicinae-stub