158 Works

First record of the emerging global pest Brachymyrmex patagonicus Mayr 1868 (Hymenoptera: Formicidae) from continental Asia

The first record of the exotic ant Brachymyrmex patagonicus Mayr 1868 from continental Asia is here presented. Specimens collected from an urban environment in Hong Kong coupled with recent surveys suggest an early stage in the invasion process. The summary of recent records shows that the introduced range of this species is quickly increasing globally and biologists in Asia should remain vigilant to detect it. In Hong Kong, measures to identify its overall spread and...

Difference in leaf herbivory between two plant-ant taxa associating with a myrmecophytic species, Macaranga lamellata

, &
Macaranga lamellata (Euphorbiaceae) is a myrmecophytic species that is protected against herbivorous insects by two plant-ant taxa, Colobopsis macarangae (Formicinae) and Crematogaster spp. (Myrmicinae). Although a single M. lamellata tree houses one plant-ant colony of either of the two taxa, both coexist in a population of M. lamellata in a Bornean rainforest. To elucidate the extent of herbivory damage upon M. lamellata trees associated with Colobopsis relative to trees associated with Crematogaster, we counted the...

First records of Cardiocondyla ants from Myanmar

Jürgen Heinze, Andreas Trindl, Bernhard Seifert, & Win Maung
Numerous species of the diverse ant genus Cardiocondyla have been reported from countries in Southeast Asia, but as yet nothing has been known about their presence in Myanmar. A short, preliminary survey documents the occurrence of at least five species of Cardiocondyla in anthropogenically disturbed areas, such as gardens and parks. The species most commonly sampled has been determined as C. tjibodana, other specimens as C. parvinoda, C. obscurior, C. itsukii and one or two...

Polyrhachis (Myrmhopla) maryatiae, a new species of the armata group from Borneo (Hymenoptera: Formicidae, Formicinae)

Rudolf J. Kohout
Polyrhachis (Myrmhopla) maryatiae, a new species of the armata-group from Borneo, is described and illustrated. Characters are provided to distinguish it from the closely allied P. armata (Le Guillou 1842), a widespread Southeast Asian species. Polyrhachis maryatiae is rare in collections and probably nests high in the canopy of rainforest trees.

A review of the subgenus Polyrhachis (Campomyrma) Wheeler from Borneo with descriptions of new species (Hymenoptera: Formicidae: Formicinae)

Rudolf J. Kohout
Abstract: Five species of the subgenus Campomyrma Wheeler, 1911 of the genus Polyrhachis Fr. Smith, 1857 are recorded from Borneo, including P. equina Fr. Smith, 1857 and P. gribodoi Emery, 1887 and three species, P. hashimotoi, P. reidi and P. sukarmani, described as new. Polyrhachis equina and P. gribodoi are placed within the newly erected equina species-group. Polyrhachis hashimotoi is placed within the newly erected xiphias species-group together with P. xiphias Fr. Smith, 1863 from...

Effects of deforestation on mutualistic interactions of ants with plants and hemipterans in tropical rainforest of Borneo

Hiroshi O. Tanaka, Seiki Yamane, Tohru Nakashizuka, & Takao Itioka
We examined the effects of slash-and-burn deforestation on the properties of the ant-associated mutualistic interactions with plants and hemipterans in and around a lowland tropical rainforest in Borneo. We compared the frequency of occurrence and composition of the involved species among primary and secondary forest plots of different stand ages (time since last slash-and-burn event). For ants attending both extrafloral nectaries (EFNs) and hemipterans, for trees bearing EFNs, and for trees with hemipteranattending ants, the...

Ants of the Klong U-Tapao Basin, Southern Thailand

, &
Ton Nga Chang Wildlife Sanctuary is located in the Khao Ban Thad Mountain Range, in the southern part of Thailand. It serves as a watershed for the Klong U-Tapao Basin that collects water from many streams, draining via Hat Yai City into Songkhla Lake. It might be expected that the diversity of habitat types along the streams from the watershed to the lake should be reflected in the diversity of fauna and flora. Ants play...

Ant records from Savar, Dhaka, Bangladesh

Mohammed A. Hannan
During a survey on 16 and 22 February 2005, 19 species of ants were collected from six subfamilies (Ponerinae, Pseudomyrmecinae, Cerapachyinae, Myrmicinae, Dolichoderinae and Formicinae) and 17 genera from Savar, Dhaka, Bangladesh. Among them 14 species were new records for Bangladesh (Odontoponera (cf. denticulata (F. Smith)), Diacamma sp. (cf. indicum Santschi), Tetraponera aitkenii (Forel), Cerapachys sp., Lophomyrmex ambiguus Rigato, Vollenhovia sp., Dolichoderus sp. (cf. affinis Emery), Tapinoma melanocephalum (Fabricius), Technomyrmex albipes (F. Smith), Anoplolepis gracilipes...

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...

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