103 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.

An analysis of declining ant species richness with increasing elevation at Mount Kinabalu, Sabah, Borneo

Annette K.F. Malsch, Brigitte Fiala, Ulrich Maschwitz, , &
his study investigated factors responsible for the decline of ant species richness with increasing elevation in an evergreen tropical rain forest on Mount Kinabalu. From 580 m to 1520 m a.s.l. we studied the ant community as well as biotic and abiotic factors in parallel on the ground and in the lower vegetation with various methods. We collected a total of 376 ant morphospecies, belonging to 65 genera and 8 subfamilies. The decline of ant...

Diversity and richness of ant species in a lowland wet forest reserve in Sri Lanka

, Jonathan D. Majer & Jayanthi P. Edirisinghe
Sinharaja Forest Reserve (SFR) represents one of the largest remaining stands of mixed dipterocarp forest in southwestern Sri Lanka. It is characterised by high floral and faunal endemicity and is gazetted as a World Heritage Site. Research was undertaken to study the ground-dwelling ants in the SFR using pitfall traps and leaf litter extraction. The collection was carried out in disturbed and undisturbed primary forest, old selectively-logged forest (30 years old) and periphery forest (agricultural...

Ant community variation in urban and agricultural ecosystems in Vadodara District (Gujarat State), western India

Dolly Kumar & Archana Mishra
Studies on ant communities of India are sparse and needed. This is the first comprehensive survey of ant communities from the Vadodara district located in the central part of Gujarat, India (west coast of the Indian Peninsula). The present study was undertaken to (i) assess ant diversity and density changes along a habitat gradient and (ii) establish the species composition of ant communities in urban and agricultural ecosystems. Study sites comprised (a) agricultural ecosystems, which...

On the identity of Crematogaster schimmeri Forel, 1912 and the distribution of subgenus Decacrema in Asia (Hymenoptera: Formicidae)

Shingo Hosoishi & Kazuo Ogata
Taxonomy of Crematogaster species is confounded by intra- and inter-specific variation. Although most recent taxonomic works on ants avoid subgenus classification, for Crematogaster we follow the traditional subgenus framework as a working hypothesis, a recognised approach to solving taxonomic problems in such a huge group.

Impacts of forest fragmentation on the genetic diversity and population structure of Pachycondyla obscurans in Sabah, Malaysian Borneo

Noel Tawatao, Neil E. Harper, , , Jeremy B. Searle & Jane K. Hill
The impact of forest fragmentation on genetic diversity of Pachycondyla obscurans, a predatory forest-specialist ant species, was investigated in six forest locations using Amplified Fragment Length Polymorphism (AFLP) fingerprinting. There was little difference in genetic diversity between three large forest locations (two locations in continuous forest, plus one 120,000 ha fragment) and three small forest fragments (151–320 ha). Populations from two locations approximately 60 km apart in continuous forest showed little genetic differentiation, but genetic...

Worker ant community observed by repeated sampling and information on endemic Aneuretus simoni Emery in the Gilimale Forest Reserve in Sri Lanka

The ant community of Gilimale Forest Reserve in Sri Lanka is of special interest as a habitat of the island-endemic Aneuretus simoni. Ant community composition and aspects of A. simoni ecology in this forest were investigated using multiple sampling methods simultaneously, on six visits to Gilimale from February to December 2004. Daytime sampling of ants was carried out along ten 100 m transects by honey and canned-fish baiting, leaf litter and soil sifting, hand collection,...

A new species of the ant genus Aphaenogaster Mayr (Hymenoptera: Formicidae) from Iran

Kadri Kiran, Helen Alipanah & Omid Paknia
A new species, Aphaenogaster iranica Kiran et Alipanah, sp. nov., is described from Iran. This species, belonging to the rothneyi group, is measured, illustrated and compared with other species of the group. Additionally, a key to workers of Aphaenogaster species from Iran is prepared.

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

& 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.

Frequency of nest occurrence and nest density of Aneuretus simoni Emery (Sri Lankan Relict Ant) and other ant fauna in an abandoned rubber plantation (Kirikanda Forest) in southwest Sri Lanka

, , &
Aneuretus simoni Emery, a critically endangered ant species endemic to Sri Lanka, was studied in Kirikanda Forest in Kalutara District. The nest occurrence and nest density of ant species was investigated using 240 quadrats (0.5 m x 0.5 m), in six 100 m2 plots, on 15 January, 5 May and 24 July 2010, and recording the number of ground nests belonging to any ant species within each quadrat. Fallen twigs and decaying wood pieces within...

Ant species richness, endemicity and functional groups, along an elevational gradient in the Himalayas

, , Meenakshi Bharti & Martin Pfeiffer
In this study we investigate variation in species density, species richness, abundance and functional-groups composition along an elevational gradient in Jammu-Kashmir Himalaya. We tested the hypotheses that (1) species richness and abundance decrease with increase in elevation with respect to temperature change, and (2) assemblage composition changes with an increase in elevation with respect to functional-group composition. We employed different sampling methods like pitfall traps, leaf-litter sifting, stick beating, soil cores, honey baits and hand...

The effectiveness of weaver ant (Oecophylla smaragdina) biocontrol in Southeast Asian citrus and mango

Joachim Offenberg, &
Oecophylla ants may protect tropical plantation crops against pests. Cost-benefit studies comparing ant-based protection with conventional methods are needed to assess whether it is economically viable. Here we contrast profits in ant- and chemically-protected plots in a Thai and a Vietnamese citrus plantation and in a Thai mango plantation. In Thai pomelo and Vietnamese mixed pomelo/orange, ants and chemical pesticides lead to equal fruit yields. Lower costs in ant treatments, though, generated profit gains of...

Diversity and biogeography of ants in Mongolia (Hymenoptera: Formicidae)

, , Seiki Yamane & Martin Pfeiffer
Information on the biogeographical composition and spatial distribution patterns of ant assemblages in Mongolia is relatively scarce. In this study we investigated species richness, spatial distribution and biogeographical composition of the Mongolian ant fauna and recorded a total of 71 species belonging to 17 genera and three subfamilies. Genus and species richness of ants is lower in Mongolia than in most surrounding geopolitical regions. Using published literature as well as our own data we examined...

Review of the Crematogaster popohana-group with the description of a new species from the Indochinese Peninsula (Hymenoptera: Formicidae)

Shingo Hosoishi & Kazuo Ogata
The Crematogaster popohana-group is reviewed and two species and one subspecies, including one new species, C. fumikoae sp. nov. are recognized. The C. popohana-group is distinguished from other Asian Crematogaster- species by the slender petiole with weakly convex sides. A key to the species based on the worker caste is also provided. Morphological features of the unique slender petiole are discussed.

Description of the male genitalia of Pristomyrmex punctatus (Smith, 1860) (Hymenoptera, Formicidae, Myrmicinae)

Aiki Yamada &
Pristomyrmex punctatus (Smith, 1860) is a parthenogenetic ant species. Colonies are usually composed of workers only, or rarely of workers and a few ergatoid queens. Workers and ergatoids reproduce thelytokously, however colonies containing alate males are often found. The habitus of the body of P. punctatus has already been observed and described by previous authors. In the present study, a detailed description of the male genitalia is provided.

On the ants (Hymenoptera: Formicidae) of the Philippine Islands: II. The genus Forelophilus KUTTER, 1931

Herbert Zettel & Dominique Zimmermann
Two new ant species from the Philippines, Forelophilus stefanschoedli sp. nov. and Forelophilus philippinensis sp. nov., are described, illustrated and compared with the type species, Forelophilus overbecki Kutter, 1931 from Java, Indonesia, hitherto the only species described in the genus. Forelophilus stefanschoedli sp. nov. is known from minor and major workers. The latter morph was previously unknown in Forelophilus Kutter, 1931 and allows a better comparison of Forelophilus, Camponotus Mayr, 1861, and Overbeckia Viehmeyer, 1916....

Trophobioses on Borneo Climbing Bamboo – diversity and ecology of ant-hemipteran associations on Dinochloa trichogona (Poaceae)

Dirk Mezger & Nico Blüthgen
Trophobioses between ants and hemipterans play an important role in tropical rainforests. The Borneo Climbing Bamboo Dinochloa trichogona commonly occurs in the understorey of lowland forests on Borneo where it frequently hosts trophobioses. Twenty-eight species of ants attending ten species of hemipterans were found on these plants. Coreid bugs and delphacids contributed the majority of associations. On average, 25 % of the stems were infected with trophobioses. Some ants built shelters over their hemipteran partner...

A review of the nesting habits and socioecology of the ant genus Polyrhachis Fr. Smith

Simon K.A. Robson & Rudolf J. Kohout
We provide a summary of the nesting and socioecological habits of 197 species of Polyrhachis ants. Nesting habits range from subterranean to terrestrial, lignicolous, lithocolous and arboreal with varying levels of consistency at the subgeneric level. Species are predominantly either subterranean or terrestrial nesting within the subgenera Campomyrma, Chariomyrma and Hagiomyrma; mainly arboreal nesting within Aulacomyrma, Cyrtomyrma, Hedomyrma, Hemioptica, Myrmatopa and Myrmothrinax; lignicolous within Hedomyrma, and variable within Myrma, Myrmhopla and Polyrhachis. The majority of...

Trophobiosis in a tropical rainforest on Borneo: Giant ants Camponotus gigas (Hymenoptera: Formicidae) herd wax cicadas Bythopsyrna circulata (Auchenorrhyncha: Flatidae)

Martin Pfeiffer & Karl Eduard Linsenmair
Here we report on a trophobiotic association of the predominantly nocturnal giant forest ant Camponotus gigas (Latreille, 1802) with a species of Flatidae, Bythopsyrna circulata (Guerin-Méneville, 1844) observed in Kinabalu National Park, Sabah, Malaysia. We investigate task sharing of the ants and quantify their nutritional benefits. Bythopsyrna circulata, which had no morphological adaptation to trophobiotic interaction with ants and seems to be facultatively associated with ants, produced the largest quantities of honeydew reported up to...

On a collection of Formicidae (Hymenoptera:Vespoidea) from Buxa Tiger Reserve, West Bengal, India, with new records of one rare genus and a rare species

& Saroj Sheela
One day’s collection of Formicidae from the Buxa Tiger Reserve of West Bengal, India yielded a total of 19 species from 15 genera and five subfamilies, of which six species are reported for the first time in the state of West Bengal (Philidris sp., Odontoponera transversa (Smith), Tapinoma indicum Forel, Crematogaster ransonneti Mayr, Lophomyrmex kali Rigato and Monomorium scabriceps (Mayr)). The genus Philidris is recorded here for the first time from mainland India. Lophomyrmex kali...

Species composition and nesting habits of ants in a hill-country home garden in Sri Lanka

This study attempts to identify the ants nesting in a home garden in the hill-country of Sri Lanka and to describe their nest morphology with a view to using the same for their identification. A total of 21 ant species were recorded from the home garden by a combination of methods, and of these, eight also occurred indoors. A total of 1,363 nests belonging to 18 species inhabiting the home garden were encountered, and their...

A new ant species from Borneo closely resembling Tetramorium flagellatum Bolton, 1977 (Hymenoptera: Formicidae)

Daniela Magdalena Sorger
Tetramorium lucyae sp. nov. from Gunung Murud (Kelabit Highlands), Sarawak, Borneo is described and recognized as a member of the Tetramorium ciliatum-species group. The species closely resembles Tetramorium flagellatum Bolton, 1977. A discussion of the discrimination of the two species is presented.

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

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.

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.

The current status of research on Solenopsis invicta Buren (Hymenoptera: Formicidae) in Mainland China

Wang Lei, Lu Yongyue, Xu Yijuan & Zeng Ling
Since the Red Imported Fire Ant Solenopsis invicta was found in late 2004 in Mainland China, researchers have paid much attention to this new invasive species. Here we summarise a series of studies on this serious invasive pest, including research on reproductive biology and ecology, ecosystem impacts, quarantine techniques, potential distribution and risk of spread, besides monitoring and management techniques. To date, S. invicta has been found in five provinces in South China and has...

Registration Year

  • 2016