12 Works

Redescription of Aphaenogaster muschtaidica Emery, 1908 with a key to gibbosa species group

Sebastian Salata & Lech Borowiec
Aphaenogaster muschtaidica Emery, 1908 n. st. is redescribed based on new material collected from Georgia. A neotype of this species is designated. Its sexual forms are described for the first time. Features defining members of A. gibbosa group are redefined and a status of Aphaenogaster subterranea fiorii Emery, 1915 n. comb. is recombined. A key to worker caste of species belonging to gibbosa group is given.

Colony composition, brood production and caste dimorphism in two species of the doryline genus Lioponera in the Oriental tropics (Formicidae: Dorylinae)

, , &
Recent phylogenetic research indicates that the true army ants (e.g. Aenictus, Dorylus, Eciton, Neivamyrmex) belong to the subfamily Dorylinae, together with several non-army ant genera such as Cerapachys, Yunodorylus, Lioponera and Ooceraea. Thus, comparative studies among doryline genera are very important for understanding the biological characteristics of true army ants. We investigated colony composition of two species of the Lioponera suscitata group in the field and in the laboratory in Indonesia, Malaysia, and Thailand. In...

Taxonomy of the Leptogenys chalybaea species group (Hymenoptera, Formicidae, Ponerinae) from Southeast Asia

& Seiki Yamane
Leptogenys atra sp. n., L. chalybaea, and L. cyanicatena sp. n. are described from Southeast Asia. These three species are distinguished from other congeners by their eye position and the shapes of the clypeal median lobe and petiolar node. The L. chalybaea species group is proposed based on the similarity of these three species. A key to the species in this group is provided. Colonies of this group contain many ergatoid queens, of which virgin...

Evidence of predation in two species of the Colobopsis cylindrica group (Hymenoptera: Formicidae: Camponotini)

Herbert Zettel, Alice Laciny, , , Alexey Kopchinskiy & Irina S. Druzhinina
The complex ecology and nutrition of “exploding” ants of the Colobopsis cylindrica group (COCY) is still poorly understood. Hitherto, this group of ants was thought to feed mainly on phylloplane biofilms with only scarce observations of carnivorous behaviour. This study focusses on observations and behavioural experiments conducted on Colobopsis badia and Colobopsis leonardi, two species native to Thailand. In experiments with C. leonardi, we investigated recognition and acceptance of diverse arthropod prey, as well as...

Colony composition and nesting habits of six species of Aphaenogaster in Thailand (Hymenoptera; Formicidae)

, , &
Aphaenogaster ants are known as predators and seed dispersers in temperate forests. The biological information of tropical Aphaenogaster, however, is still limited. We investigated the nesting habits and colony composition of six Aphaenogaster species in Thailand. All six species inhabiting several types of tropical forest nested in the soil of slopes nearby a forest path. In addition, sp. 3 nested under a stone and sp. 4 nests were found under leaf litter and in the...

Forest gaps, edge, and interior support different ant communities in a tropical peat-swamp forest in Borneo

Stijn J. J. Schreven, Eric D. Perlett, Benjamin J. M. Jarrett, Nicholas C. Marchant, , Ari Purwanto, & Mark E. Harrison
Southeast Asia’s tropical peat-swamp forests (TPSF) are globally important for carbon storage and biodiversity conservation, but are at risk from multiple threats and urgently require improved management. Ants are often used as ecological indicators in monitoring programmes to guide adaptive management, but data on TPSF ants are scarce. We conducted a twelve-month study on ants in the Sabangau TPSF in Indonesian Borneo using baited traps, to compare community composition across three disturbance categories (forest gaps,...

Lost in the city: discovery of the rare ant genus Leptanilla (Hymenoptera: Formicidae) in Macau with description of Leptanilla macauensis sp. nov.

, Seiki Yamane &
The rare ant genus Leptanilla was discovered in Macau SAR, China for the first time, which represents the second record for this genus in southeastern China. Through the detailed examination, the new species Leptanilla macauensis sp. nov. described here has unique character conditions particularly in the structure of the clypeus and subpetiolar process. Moreover, the discovery of L. macauensis sp. nov. within an island of vegetation surrounded by a dense urbanized matrix illustrates future possibilities...

Morphology and ultrastructure of the venom gland in the ant Brachyponera sennaarensis

Johan Billen & Mohammed Al-Khalifa
We studied the morphology and ultrastructure of the venom gland of queens and workers of the samsum ant Brachyponera sennaarensis, which is known for its very painful sting. The general anatomical features of the gland are similar to those of other ants. The secretory cells do not have a granular endoplasmic reticulum, but contain numerous scattered free ribosomes and a well-developed Golgi apparatus. The convoluted gland represents an additional secretory tissue, in which the venom...

Additions to the ant fauna (Hymenoptera: Formicidae) of Oman: an updated list, new records and a description of two new species

Mostafa R. Sharaf, Brian L. Fisher, , Andrew Polaszek &
An updated list of ant species (Formicidae) known from Oman is provided, including both published records and recently collected material, and bringing the total number to 123 species belonging to 24 genera and four subfamilies. In the present study thirty-four ant species were collected from Oman during expeditions in 2016 and 2017. Ten ant species are recorded for the first time in Oman : Cardiocondyla breviscapa Seifert, 2003, C. mauritanica Forel, 1890, C. yemeni Collingwood...

Queen polymorphism in Acanthomyrmex careoscrobis Moffett, 1986 in Peninsular Malaysia (Hymenoptera: Formicidae: Myrmicinae), with descriptions of hitherto unknown female castes and males

Aiki Yamada, , & Katsuyuki Eguchi
The present study presents biological observations on colony characteristics of Acanthomyrmex careoscrobis Moffett, 1986 in Ulu Gombak (Selangor, Malaysia), with redescription of the minor worker and descriptions of the hitherto unknown female castes and males. The colony of A. careoscrobis can produce both alate and ergatoid queens. Ergatoid queens may function as cheap secondary reproductive females, whereas it is at present unclear whether they engage in dependent colony foundation or not. Ergatoid queens have the...

Ant News ANeT INDIA Meeting October 2017

Meenakshi Bharti &
The 11th ANeT meeting was held at the Punjabi University, Patiala, India from 26th to 28th October 2017.

Colony structure and life history of Lioponera daikoku (Formicidae: Dorylinae)

Naoto Idogawa & Shigeto Dobata
We report the colony structure and life history of the basal doryline ant Lioponera daikoku in Kyoto Prefecture, Japan. The following characteristics were observed in the field: (1) nests were always in the cavities of dead bamboo stems on the forest floor; (2) the colonies were small, averaging 10 workers with a single dealate queen; (3) each queen had four ovarioles (2 + 2), while workers had two (1 + 1); (4) alate sexuals with...

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