134 Works

The ant genus Crematogaster Lund, subgenus Physocrema Forel, in the Indochinese Peninsula (Hymenoptera: Formicidae)

Shingo Hosoishi & Kazuo Ogata
Indochinese species of the genus Crematogaster Lund, 1831 subgenus Physocrema Forel, 1912 are reviewed. Four species are recognised in the region. Two taxa formerly treated as subspecies of difformis, C. (P.) physothorax Emery, 1889 and C. (P.) sewardi Forel, 1901, are raised to species level. An identification key to species in the region is presented.

Lasius elevatus, a new ant species of the subgenus Cautolasius (Hymenoptera: Formicidae) from the Indian Himalayas

Himender Bharti & Irfan Gul
A new species of the formicine ant genus Lasius, viz Lasius elevatus sp. nov., is described from the Indian Himalayas. This is the third species of the subgenus Cautolasius known from the Himalayas, with L. alienoflavus Bingham, 1903 and L. talpa Wilson, 1955 reported earlier. A key is provided for the 13 species reported from this region.

A further new blue Polyrhachis ant (Hymenoptera: Formicidae) from the Philippines

Herbert Zettel
Polyrhachis (Myrma) viola sp. nov. from Mangkagangi Island and a near locality on Mindanao Island, both in Surigao del Sur Province, the Philippines, is described and illustrated. It is the fourth-named species in the P. cyaniventris species group which comprises striking blue-coloured ants that are endemic to the Philippines. In addition, Polyrhachis (Myrma) cyaniventris F. Smith, 1858 is reported from Cebu Island, and thus the biogeographical subregion of Greater Negros-Panay, for the first time.

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...

Five new species of Dilobocondyla (Hymenoptera: Formicidae) with a revised key to the known species

Himender Bharti & Rakesh Kumar
Five new species of Dilobocondyla are described. Dilobocondyla gasteroreticulatus sp. nov. is reported from India based on worker and female castes. Dilobocondyla eguchii sp. nov. and D. propotriangulatus sp. nov. are reported from Vietnam, D. yamanei sp. nov. from Malaysia and D. gaoyureni from China based on worker caste only. Dilobocondyla fouqueti Santschi is redescribed, with reports of male and female castes. A revised key to the genus is also provided. With the addition of...

Utilisation of multiple queens and pupae transplantation to boost early colony growth of weaver ants Oecophylla smaragdina

Renkang Peng, Mogens Gissel Nielsen, Joachim Offenberg & Dorthe Birkmose
Weaver ants (Oecophylla smaragdina (Fabricius)) have been increasingly used as biocontrol agents of insect pests and as insect protein for human food and animals. For either of these purposes, mature ant colonies are essential. However, for a newly established colony to develop to a suitable mature size takes three years, which is too long for most users to spend rearing them. Multiple queens and non-nestmate pupae transplantation may be ways to boost early colony growth....

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

Kôichi Arimoto & 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...

Intensive agroforestry practices negatively affect ant (Hymenoptera: Formicidae) diversity and composition in southeast Sulawesi, Indonesia

Wara Asfiya, Lori Lach, Jonathan D. Majer, Brian Heterick & Raphael K. Didham
Many natural forests in southeast Asia have been replaced by agroforestry systems with increasingly intensive management practices. To test the effects of intensive agroforestry practices on the retention of rainforest biodiversity, we quantified ant diversity and composition in three cocoa plantations versus three rainforest remnants in the remote Mekongga Mountains of Southeast Sulawesi, Indonesia. Using three complementary sampling methods (pitfall trapping, leaf litter sifting, and sardine baits) we found substantially more species in the rainforest...

Global generic richness and distribution: new maps of the world of ants with examples of their use in the context of Asia

Benoit Guénard, Michael D. Weiser & Robert R. Dunn
Knowledge of the biogeographic distribution of ants is central to our understanding of ant ecology, evolution, taxonomy and conservation. Here, we introduce a novel global biogeographic database for ant genera and an associated website with maps showing the known distribution of all extant ant genera. We use this database to consider knowledge of the distribution of ant genera in Asia, a hotspot of ant diversity and biological diversity more generally. We find that, although ant...

Geographic spread of Vollenhovia emeryi (Hymenoptera: Formicidae)

James K. Wetterer, Benoit Guénard & Douglas B. Booher
Vollenhovia emeryi Wheeler is a small and inconspicuous ant species originally from East Asia that recently has been found in North America. Here, we examine the geographic spread of V. emeryi and compare its native range in Asia with its exotic range in North America. We compiled published and unpublished V. emeryi specimen records from >300 sites. We documented the earliest known V. emeryi records for 14 geographic areas, ten in Asia (Japan, North Korea,...

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...

Borneo, fANTastique!

Brian L. Fisher, Benoit Guénard & Simon Robson
Report on the ant course in Borneo, held between July 20th to July 31th in Maliau Basin, Sabah, Malaysia. A list of 88 recorded genera is presented.

Colony composition and behavioral characteristics of Myrmoteras iriodum and M. jaitrongi in Ulu Gombak, Peninsular Malaysia (Hymenoptera: Formicidae)

Fuminori Ito, Satoshi Miyazaki, Rosli Hashim & Johan Billen
The colony composition and behavioral characteristics of the trap-jaw ants Myrmoteras iriodum and M. jaitrongi were studied in Ulu Gombak, Peninsular Malaysia. The following colony characteristics were common in both species: (1) Colony size was remarkably small, less than 10 workers on average with one mated dealate queen. Alate sexuals were produced in colonies with less than 10 workers. (2) Queens had a total of four ovarioles per individual (2+2) while workers had two (1+1)....

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

Weeyawat Jaitrong, Benoit Guénard, Evan P. Economo, Nopparat Buddhakala & 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...

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

Rudolf J. Kohout & Maryati Mohamed
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

Ant diversity in a Peninsular Malaysian mangrove forest and oil palm plantation

Nor Rasidah Hashim, Wan Faridah Akmal Wan Jusoh & Mohd Nassrul Safre Mohd Nasir
In Malaysia, it is a common practice to convert mangrove forests into agricultural plantations, especially oil palm. For this to happen, mangroves are drained and pesticides and fertilizers are often used to encourage healthy growth and yield of the oil palms, impacting biodiversity there and nearby. Mangroves are challenging habitats and certain mangrove ants, such as the Australian species Camponotus anderseni, show a high degree of adaptation to them.

Notes on the habitat and biology of the rare ant genus Tyrannomyrmex (Fernández, 2003)

Mark K. L. Wong & Gordon W. J. Yong
The rare myrmicine ant genus Tyrannomyrmex Fernández, 2003 comprises three species of tropical ants restricted to the Oriental region. This study presents information on worker size, specific habitat, food and behaviour of Tyrannomyrmex rex.

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

Chi-Man Leong, Shiuh-Feng Shiao & Benoit Guénard
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...

Cryptopone subterranea sp. nov., a rare new cryptobiotic ant species (Hymenoptera: Formicidae) from India

Himender Bharti & Aijaz Ahmad Wachkoo
A cryptobiotic species Cryptopone subterranea sp. nov. is described based on the worker caste, collected in the foothills of the Indian Himalayas. It most resembles C. motschulskyi Donisthorpe, 1943, and distinctly differs from all described species of the genus. An identification key to the known Indian species of Cryptopone is provided.

New species of the extinct ant genus Enneamerus Mayr (Hymenoptera, Formicidae) and designation of the neotype of E. reticulatus

Alexander Radchenko & Gennady M. Dlussky
A new species of the peculiar extinct myrmicine ant genus Enneamerus Mayr is described from Baltic amber (Late Eocene, Priabonian, ca. 34-38 Ma), and a neotype of E. reticulatus Mayr is designated. Enneamerus costatus sp. nov. differs from the previously known E. reticulatus by its much coarser, costulate sculpture on the frons and by the absence of long erect hairs on the antennal scape. Some additional diagnostic features for Enneamerus are provided and the taxonomic...

Two new species of the proceratiine ant genus Discothyrea Roger from Yunnan, China, with a key to the known Oriental species

Zhenghui Xu, Chris J. Burwell & Akihiro Nakamura
Two new species of the proceratiine ant genus Discothyrea Roger, 1863 collected from Yunnan Province in southwestern China are described: D. banna sp. nov. and D. diana sp. nov. A key, based on the worker caste, to the nine known Oriental species of the genus is provided.

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

Fuminori Ito & 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...

New records of ants (Hymenoptera: Formicidae) from Iran

Omid Paknia, Alexander Radchenko & Martin Pfeiffer
The ant species list of Iran is far from complete. So far, only 110 species belonging to 26 genera have been recorded from Iran. For this study, we collected the majority of ant material in two periods of field work in spring and summer of 2007 and 2008. In total, we checked more than 35,000 specimens, and recorded 32 species and six genera new to Iran: Dolichoderus, Myrmecina, Proformica, Pyramica, Stenamma and Strongylognathus. Our new...

Ecological notes on a plant ant, Cladomyrma scopulosa Eguchi & Bui (Hymenoptera, Formicidae, Formicinae) associating with a tree species Saraca dives Pierre (Leguminosae)

Katsuyuki Eguchi & Tuan Viet Bui
Abstract: In north and north-central Vietnam colony structure and other aspects of biology of Cladomyrma scopulosa Eguchi & Bui associating with a tree species Saraca dives Pierre were recorded. Within the genus Cladomyrma a colony structure with multiple dealate queens has been seen almost exclusively in C. scopulosa. Our limited observations suggest that secondary polygyny at the early founding stage, or even primary polygyny, often occur in C. scopulosa. The colony may become progressively more...

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