148 Works

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

, 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....

Philidris ants living inside Dischidia epiphytes from Thailand

Christian Peeters &
The epiphyte Dischidia major has highly modified leaves (‘pitchers’) that provide lodging for various ants, especially Philidris (Dolichoderinae) but also Cataulacus and Crematogaster (Myrmicinae). In return, the plants can obtain extra nutrients but this depends on intimate contact between the branching adventitious roots growing within inhabited pitchers and the organic debris brought in by the ants. D. major pitchers were sampled in two very different habitats in Thailand: coastal heathland in the South, and the...

Reproduction by ergatoid queens in the myrmicine ant Monomorium brocha (Bolton) (Hymenoptera: Formicidae)

& Seiki Yamane
This study reports on reproduction by ergatoid queens of Monomorium brocha (Bolton) collected in the Bogor Botanic Garden, West Java, Indonesia. One colony fragment comprised 20 ergatoid queens that showed variable ovariole numbers. All but one of the dissected queens had mated, but the ovarian condition varied among individual queens. Ergatoid queens can be easily distinguished from workers by morphological characteristics such as large compound eyes and a suture between the pronotum and mesonotum. The...

The use of artificial nests by weaver ants: A preliminary field observation

Joachim Offenberg
Weaver ants (Oecophylla spp.) are managed in tropical plantations for their biocontrol of pests and to produce ant larvae as a food source. Main management objectives are to increase ant densities and colony longevity. As weaver ant nests are susceptible to harsh weather, rain storms may decimate populations or destroy colonies. The ants, however, show adaptive nesting behaviour, which may mitigate storm impact. This study tested whether Oecophylla smaragdina was willing to use plastic bottles...

A new species of Pristomyrmex Mayr, 1866 (Hymenoptera: Formicidae) from Mindoro, the Philippines

Herbert Zettel & Alice Laciny
Pristomyrmex pangantihoni sp. n., a new species from Mindoro Island, is described and illustrated. It is compared with P. collinus Wang, 2003 which is widespread in the Philippines.

Agricultural land use alters species composition but not species richness of ant communities

Ratna Rubiana, , Lisa H. Denmead, , , , , Yann Clough, Teja Tscharntke &
Land-use change causes undesirable effects such as biodiversity decline, altered community structure and reduced ecosystem services. Changes in species composition and disrupted trophic interactions between pests and their natural enemies may also result causing decreased ecosystem services. We studied the effects of forest habitat transformation on the community structure of ants, which include major biological control agents. We focused on four types of land use around Harapan Forest (Harapan) and Bukit Duabelas National Park (BDNP),...

Discovery of the Sri Lankan Relict Ant, Aneuretus simoni Emery (Formicidae, Aneuretinae) and the nest density of the species in a selected region of Meethirigala Forest Reserve, Sri Lanka

The sole extant species of Aneuretinae, Aneuretus simoni Emery, forms ground nests in various substrates in wet zone and intermediate zone forests in Sri Lanka. Nests of the species were surveyed outside the previously recorded habitats, in Meethirigala Forest Reserve in Gampaha District. The frequency of occurrence, percentage nest abundance and mean nest density in three localities were investigated by laying 40 quadrats of 0.5 m x 0.5 m at two plots in each locality,...

Descriptions of a new species and the gyne in the rarely collected arboreal genera Paratopula and Rotastruma (Hymenopytera: Formicidae) from Hong Kong, with a discussion on their ecology

Ying Y. Luo &
Despite its relatively large size among the Myrmicinae of the Indomalayan region, collection events of Paratopula Wheeler are rare. Here we discuss the discovery of Paratopula in Hong Kong and present Paratopula bauhinia sp. nov as a new species. This addition brings the number of globally described species for the genus to twelve species, four of which are known only from the reproductive caste. Paratopula bauhinia sp. nov. can be distinguished from previously described species...

Nesting and reproductive biology of Platythyrea sp. (parallela-group) in the Bogor Botanic Gardens, West Java, Indonesia (Hymenoptera: Formicidae)

I report the colony composition and nesting biology of Platythyrea sp. (parallela-group) in the Bogor Botanic Gardens, West Java. This species, which always nests in trees, reproduces through both dealated queens and mated workers. Among 13 collected colonies, dealated queens reproduced in only one colony, which also contained six mated workers, of which three had active ovaries. In the queenless colonies, the percentage of mated workers among the worker population was high, while there were...

Book Review: Fisher BL & Bolton B 2016 Ants of Africa and Madagascar, A guide to the genera University of California Press. 512 pp. ISBN: 978-0520290891

Leeanne E. Alonso & Simon Robson
This book review gives a introduction to a new field guide to the ant genera of Africa and Madagascar.

Ants as bioindicators of ecosystem health in Shivalik Mountains of Himalayas: assessment of species diversity and invasive species

, Meenakshi Bharti & Martin Pfeiffer
The Northern-Indian Shivalik mountain range has recently come under strong anthropogenic pressure. Ants were used as bioindicators to assess ecosystem health of the area. We measured diversity, community patterns, species composition and the influence of invasive species of Formicidae by collecting at 75 sites from 44 locations in three habitats: primary forest (PF), secondary forest (SF) and non-forest areas (NF) using six collection techniques. We obtained the most comprehensive dataset compiled for Indian ants to...

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.

The metapleural gland of Aneuretus simoni (Formicidae, Aneuretinae)

Johan Billen
Aneuretus simoni workers have a paired metapleural gland that in minor workers contains six secretory cells on each side, while majors have 12 cells per side. The heavily sclerotized reservoir opens above the articulation of the hind-legs through a large round orifice with a diameter around 40 μm. Stiff dispenser hairs emerge from the orifice, and assist in guiding the secretory products to the exterior. The rounded to ovoid cells display a well-developed smooth endoplasmatic...

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...

Nuptial flight of the Southeast Asian plant-ant Crematogaster captiosa (Forel, 1911) and the phenology of colony founding

Brigitte Fiala, , Klaus Dumpert & Ulrich Maschwitz
Despite the great importance of nuptial flights for ants, little is known about the swarming processes from the highly diverse tropical regions, especially rainforests. This is particularly true for ants living in obligate symbiosis with myrmecophytic plants. Here we present the first direct observations of the swarming event in the association between Crematogaster captiosa and the pioneer tree Macaranga bancana in Southeast Asia. Nuptial flights of C. captiosa on M. bancana took place during the...

Harvesting fig seeds from bird feces by an Oriental myrmicine ant species, Acanthomyrmex ferox Emery, 1893 (Hymenoptera: Formicidae)

, Bruno Gobin &
Seed harvesting behavior of the Oriental myrmicine ant, Acanthomyrmex ferox was observed in Ulu Gombak, Peninsular Malaysia. Minor workers harvested fig seeds exclusively from bird feces dropped on the lower vegetation.

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...

Nest structure of the bark-digging ant Rhopalomastix (Formicidae, Myrmicinae) and notes on its mutualistic associations with diaspidids in a Thai mango plantation

Gordon Yong, & Christian Peeters
Rhopalomastix is a bark digger ant that nests in the bark of living trees. The ants share a mutualistic relationship with diaspidids (armoured scale insects), housing them in their nest tunnels in the bark of a tree. Two colonies of Rhopalomastix sp. were sampled from two cultivars of mango trees in a mango plantation in Thailand. The architecture of the nest was mapped out and the respective resident diaspidid partners collected. Rhopalomastix built two different...

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...

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