148 Works

A preliminary list of the Polyrhachis ants of the Maliau Basin Conservation Area in Sabah, Borneo (Hymenoptera: Formicidae: Formicinae)

Rudolf J. Kohout &
A preliminary list of the Polyrhachis ants collected during the 2005 Maliau Basin Scientific Expedition is presented. A total of 49 species are recorded, including 36 previously described taxa and 13 species recognised as new to science. This suggests that the Polyrhachis fauna of the Maliau Basin is amongst the most diverse of any area in not only Borneo, but possibly the whole of Southeast Asia

Colony composition and behaviour of a queen and workers in the Oriental ectatommine ant Gnamptogenys cribrata (Emery) 1900 in West Java, Indonesia

& Bruno Gobin
We describe colony composition and reproductive and behavioural characteristics of Gnamptogenys cribrata. Colonies are monogynous, composed of one dealate queen and an average of 27 workers. This species shows the unusually low number of two ovarioles (1 – 1) in both queens and workers. The queen shows larval hemolymph feeding. Workers laid two distinctive types of egg depending on social environment: in the presence of a queen workers laid small trophic eggs which were not...

Observations on the foraging behaviour of Myrmicaria brunnea subcarinata (Smith) (Hymenoptera: Formicidae) in a tropical rainforest in Sarawak (Malaysia)

Jan Wriedt, Dirk Mezger, Lucy Chong & Martin Pfeiffer
As a contribution to the knowledge of the natural history of Myrmicaria brunnea subcarinata (Smith, 1857), we studied the territory, circadian activity patterns, diet composition, trophobiotic interactions and fighting success of a colony of this species in an alluvial forest in Gunung Mulu National Park (Borneo, Malaysia). The territory size of the focal colony, which comprised 6,000 to 8,000 individuals living within a single nest, was approximately 270 m2. Many permanent foraging trails were subterranean...

Ant diversity in rubber plantations (Hevea brasiliensis) of Cambodia

Shingo Hosoishi, Anh Le Ngoc, Seiki Yamane &
We investigated the arboreal and ground ant fauna in rubber plantations (Hevea brasiliensis) in Kampong Cham Province, Cambodia. A total of 41 species of Formicidae, belonging to 28 genera in seven subfamilies, were collected. In three types of rubber plantations examined 25, 23 and 27 species of ants were found in a six-year-old, a nine-year-old and an old (>50-year) plantation, respectively. Total species richness of ants did not differ significantly among the three types of...

Seasonal patterns in ant (Hymenoptera: Formicidae) activity in a forest habitat of the West Khasi Hills, Meghalaya, India

&
Seasonal variation in ant activity was studied in a subtropical humid forest of Meghalaya, northeast India, using pitfall traps as the sampling method. A total of 108,733 ant individuals were collected during sampling, consisting of 28 species in 18 genera. Subfamilies comprised Myrmicinae (12 species), Formicinae (eight), Ponerinae (five), Dorylinae, Cerapachyinae and Dolichoderinae (one species each). Number of species recorded was highest during spring and summer and lowest during winter. Number of individuals and species...

From ant-catcher to author: editors’ advice to young myrmecologists

John R. Fellowes & Martin Pfeiffer
Asian Myrmecology is a journal created and edited for those studying ants in Asia. It was established not necessarily to become the top journal in its field, but primarily to support and serve those in its region: experienced ant researchers as well as beginners. Its editors and reviewers give generously of their time and expertise to make it work, and we believe Asian Myrmecology has played a role, like the International Network for the Study...

A review of the subgenus Polyrhachis (Polyrhachis) Fr. Smith (Hymenoptera: Formicidae: Formicinae) with keys and description of a new species

Rudolf J. Kohout
The nominal subgenus Polyrhachis of the genus Polyrhachis Fr. Smith is reviewed. Eleven species of the subgenus are recognised, including ten previously described (Polyrhachis bellicosa Fr. Smith, P. bihamata (Drury), P. craddocki Bingham, P. erosispina Emery, P. olybria Forel, P. lamelidens Fr. Smith, P. mindanaensis Emery, P. montana Hung, P. taylori Kohout and P. ypsilon Emery) and one, P. maliau, described as new. The worker and the queen of P. bellicosa and the worker of...

Comparison of foraging habits between four sympatric army ant species of the genus Aenictus in Sarawak, Borneo

Yoshiaki Hashimoto & Seiki Yamane
In Lambir Hills National Park, Sarawak Borneo, we observed foraging habits of four sympatric army ant species of the genus Aenictus: A. laeviceps (F. Smith, 1857), A. dentatus Forel, 1911, A. gracilis Emery, 1893, and A. inflatus Yamane & Hashimoto, 1999. All of these species were demonstrated to be specialized on other ants as a food source. However, notable differences in the composition of prey ants were observed between the four species, which may reduce...

The first observation of honeydew foraging in army ants since 1933: Aenictus hodgsoni Forel, 1901 tending Eutrichosiphum heterotrichum (Raychaudhuri, 1956) in Southeast China

Michael Staab
In the present paper I report the first observation of army ants tending Hemiptera in Asia. On 7 October 2012 at 10:00 local time approximately 30 workers of Aenictus hodgsoni Forel, 1901 were observed and photographed collecting honeydew from around 50 Eutrichosiphum heterotrichum (Raychaudhuri, 1956) (Aphididae) on fresh shoots of a young 1.5 m high Lithocarpus glaber (Thunberg) Nakai, 1916 (Fagaceae) tree.

Book Review: Myrmica ants (Hymenoptera: Formicidae) of the Old World

Marc Van Der Stappen
Review on "Alexander G. Radchenko and Graham W. Elmes, 2010. FAUNA MUNDI Volume 3: Myrmica ants (Hymenoptera: Formicidae) of the Old World" Natura Optima Dux Foundation, Wilcza 64., 00-679 Warszawa, Poland. 789 pages, 333 figs, 163 maps, hardcover, 165 × 235 mm. Price: 150 Euro. ISSN 2081-4615, ISBN 978-83-930773-1-1

Influence of leaf litter composition on ant assemblages in a lowland tropical rainforest in Thailand

, , , , , & Yves Basset
In tropical rainforests, variability in the distribution of soil and litter arthropods is usually explained at regional scales by altitude, soil nutrients, and disturbance regimes. However, the influence of these factors on insect assemblages at the micro-habitat scale has rarely been studied. We investigated whether the species identity of decomposing leaves in tropical forest affected the composition of ant assemblages around them. Ants were extracted from litter below three common tree species, Parashorea stellata (Dipterocarpaceae),...

Nest density of Aneuretus simoni Emery (Sri Lankan Relict Ant) and Stereomyrmex horni Emery in three forest regions in western and southern Sri Lanka

&
Aneuretus simoni Emery and Stereomyrmex horni Emery are two endemic and rare ant species in Lanka. The presence or absence and nest density of these species was surveyed to find out if they inhabit locations outside the previously recorded habitats, and to verify their conservation status. Colonies were surveyed by thorough inspection, breaking decaying pieces of wood and the removal of leaf litter in a forest in Western Province (Kalugala Proposed Forest Reserve – KPFR)...

Daily activity patterns of Platythyrea parallela in Peninsular Malaysia

Nurul Ashikin &
The study observed the daily activity patterns at natural nests of Platythyrea parallela in the tropical rainforest and was conducted at Ulu Gombak Forest Reserve, Peninsular Malaysia. The 24 hours observation was performed at two stable colonies of this species until a total of 240 hours was collected. From the result obtained,P. parallela was classified as ‘diurnal’ species. Most individuals were observed to be active during midday. Activity patterns were significantly different between day and...

The intramandibular gland of Aneuretus simoni (Formicidae, Aneuretinae)

Johan Billen & Sebastiaan Verbesselt
Aneuretus simoni workers have a conspicuous intramandibular gland, formed by round to polygonal class-3 secretory cells with a diameter around 16-17 μm and their accompanying duct cells. Both in minor and major workers, approx. 8 cells open through the proximal upper surface of the mandible, approx. 12 cells open through the proximal lower surface. The secretory cells are characterized by a well-developed granular endoplasmic reticulum and Golgi apparatus. The cytoplasmic organization indicates the secretion has...

Defensive function of petiole spines in queens and workers of the formicine ant Polyrhachis lamellidens (Hymenoptera: Formicidae) against an ant predator, the Japanese tree frog Hyla japonica

, Kentaro Taniguchi & Johan Billen
The defensive function of petiole spines in queens and workers of the formicine ant Polyrhachis lamellidens was investigated using the ant predating tree frog Hyla japonica. Ant workers have hook-like large spines on their petiole while the queen petiole has only small slightly curved spines. Intact workers of P. lamellidens are unpalatable while workers without spines and intact queens are palatable, indicating that the spines of workers provide an effective defense against the tree frogs....

A Checklist of known ant species of Laos (Hymenoptera: Formicidae)

, , Evan P. Economo, & Seiki Yamane
Laos is one of the most undersampled areas for ant biodiversity. We begin to address this knowledge gap by presenting the first checklist of Laotian ants. The list is based on a literature review and on specimens collected from several localities in Laos. In total, 123 species with three additional subspecies in 47 genera belonging to nine subfamilies are listed, including 62 species recorded for the first time in the country. Comparisons with neighboring countries...

Nesting site selection of Temnothorax congruus from Japanese broad-leave forests: a trade-off between nest site quality and distance from sympatric Crematogaster teranishii colonies

Kazutaka Syoji &
Intra- and interspecific competition for resources such as food and nesting sites, as well as other biotic and abiotic factors, affect colony distribution of ant species. Through a series of laboratory experiments using Temnothorax congruus and its putative sympatric competitor Crematogaster teranishii we investigated whether nesting site selection by T. congruus is affected by the presence of C. teranishii. In the absence of C. teranishii, T. congruus colonies preferred plastic tubes with narrower entrances and...

Ant gardens of Camponotus (Myrmotarsus) irritabilis (Hymenoptera: Formicidae: Formicinae) and Hoya elliptica (Apocynaceae) in Southeast Asia

Andreas Weissflog, Eva Kaufmann & Ulrich Maschwitz
Camponotus irritabilis (Formicidae: Formicinae) and Hoya elliptica (Apocynaceae) are very closely associated in ant gardens in Malaya and Sumatra. Ants and epiphyte partners have some characteristics that make them especially suitable for this association: The ants selectively retrieve the seeds of their epiphyte partners, and they fertilize their carton nests on which the plants are growing. In comparison to non-myrmecophytic Hoya coriacea, Hoya elliptica performs an extensive root growth as long as growing on moist...

Ants in the city, a preliminary checklist of Formicidae (Hymenoptera) in Macau, one of the most heavily urbanized regions of the world

, &
Macau is a small territory in South East China and one of the most densely populated regions in the world. Previous studies on insect groups have shown that a relatively diverse, yet specific, fauna could still survive in this region. However, to this point, studies on the myrmecofauna of Macau are scarce and to date no species checklist exists. Here, we present the first checklist of Macanese ant species by combining results from recent ant...

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...

A Taxonomic Study on the Genus Strumigenys Smith, 1860 (Hymenoptera: Formicidae) from Korea with a description of new species

Min-Soo Dong &
Korean species of the genus Strumigenys Smith, 1860 are revised. One new species, Strumigenys calvus sp. nov. and two newly recorded species are presented in this study. The records of Strumigenys sp. in Choi (1995) are here identified as S. kumadori based on the examination of the description and taxonomic key provided by Choi (1995). In order to facilitate proper identification of Korean Strumigenys species, we provide a taxonomic key for all known South Korean...

Protection from herbivores varies among ant genera for the myrmecophilic plant Leea aculeata in Malaysian Borneo

Hannah F. Burger, Kamila Vondráčková, Mateusz Skłodowski, , Daisy H. Dent, Kevin Wallace & Tom M. Fayle
Some plants use food bodies to attract ants that then provide protection from herbivory. A brief report from 1898 describes the myrmecophilic plant Leea aculeata Bl. as bearing food bodies on its young shoots, which accumulate when they are not harvested by ants. However, ant efficacy in deterring herbivores and consequences for herbivory rates remain unknown. Here we investigate (1) which ant taxa patrol these plants and whether they remove significant numbers of food bodies,...

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