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View of the petiole and postpetiole of P. bauhinia sp. n. in dorsal view (holotype).

View of the petiole and postpetiole of P. bauhinia sp. n. in dorsal view (holotype).

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Article
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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...

Contexts in source publication

Context 1
... terior 2/3 of subpostpetiolar process margin convex when viewed in profile. In dorsal view, petiole roughly oval in shape ( Figure 5), longer than broad (PI 50-54). Postpetiole broader than long (PPI 112-123), more narrow at the anterior edge than the posterior edge, roughly trapezoidal in shape. ...
Context 2
... hairs on the dorsum of P. zhengi are also described as "short blunt erect hairs", but in P. bauhinia the hairs are apically acute. Additionally, the postpetiole of P. ceylonica is squarish in appearance (see Figure 5 in Bolton 1988) in dorsal view, whereas in P. bauhinia the postpetiole is broader than long, appearing roughly trapezoidal. ...

Citations

... Such rarity is not exceptional in some of the ant genera, e.g. arboreal cryptic-nesting Rhopalomastix Forel, 1910, Lasiomyrma Terayama & Yamane, 2000and Rotastruma Bolton, 1991(Terayama and Yamane 2000Luo and Guenard 2016;Wang et al. 2018b;Hosoishi et al. 2021). ...
Article
Many tropical insect species remain formally undescribed, and the validity of some rarely collected and poorly studied taxa is uncertain. Overbeckia Viehmeyer, 1916 is a monotypic ant genus and a rare member of the arboreal ant communities of tropical South East Asia and Australasia. Overbeckia subclavata Viehmeyer, 1916 was collected and described from Singapore more than a century ago and there have been few other records of these ants since. Here we compare the existing Overbeckia records with recent collections in Australia, New Guinea and Indonesia. We revise the taxonomic diagnosis of the genus Overbeckia in comparison with other genera of the diverse tribe Camponotini, redescribe O. subclavata and describe two new species, Overbeckia papuana sp. nov., and Overbeckia jambiensis, sp. nov. We also summarise all available ecological and distributional information of the genus, indicating that Overbeckia occurs in a variety of lowland vegetation types, from rainforests to secondary growth and plantations but is extremely rare. Using external morphological characters, internal proventricular structures and a molecular phylogeny of 78 Camponotini species based on five protein-coding loci, we demonstrate that Overbeckia is a monophyletic lineage. Molecular-clock calibrated trees using 21 fossil records indicate that the divergence between Overbeckia and its sister clade comprising the genera Echinopla Smith, 1857 and Calomyrmex Emery, 1895 occurred c. 21 Ma (95% highest posterior density 14–28), and that the divergence between the three Overbeckia species likely occurred in the late Miocene and Pliocene. In addition, we transfer one Camponotus Mayr, 1861 species to Colobopsis in the light of molecular evidence: Colobopsis triangulata (Klimes & McArthur, 2014) comb. nov. Our analysis represents the most comprehensive phylogeny of the tribe Camponotini in terms of coverage of extant divergent lineages, including Overbeckia, and suggests relatively robust phylogenetic relationships among genera that are consistent with published phylogenomic trees. Overall, our study reveals cryptic species diversity in Overbeckia and provides strong evidence that this is a valid and polytypic ant genus.
... Such rarity is not exceptional in some of the ant genera, e.g. arboreal cryptic-nesting Rhopalomastix Forel, 1910, Lasiomyrma Terayama & Yamane, 2000and Rotastruma Bolton, 1991(Terayama and Yamane 2000Luo and Guenard 2016;Wang et al. 2018b;Hosoishi et al. 2021). ...
... A newly identified species, Paratopula bauhinia (Golden Tree Ant), was found by the biologists of the University of Hong Kong.(Luo and Guenard 2016) ...
Article
This paper is an original attempt to apply transaction cost reasoning to interpret map representation as a Coasian organizational coordination tool, the essence of Coase’s (1937) theory of the firm, in modern active heritage conservation planning by the state as a firm. It is argued that maps, which have been used by voluntary organizations to promote their causes in heritage conservation, is pivotal in reducing transaction costs of heritage identification, grading and planning, by non-market means, in contrast to the case of commercial dealings in small artifacts and relics. Two Hong Kong examples of heritage conservation by NGO mapping, one backed by government and the other recipient of a UNESCO Asia-Pacific award, are used to demonstrate this proposition in terms of twelve functions maps can serve in organisational coordination.
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The myrmicine genus Rotastruma is a rarely collected arboreal ant group and only two species, R. recava Bolton and R. steno-ceps Bolton, are known from the Oriental Region. A new species, R. epispina sp. nov., is described from Cambodia based on the worker and queen castes. The new species is distinguished from R. recava and R. stenoceps by having the propodeal spine directed upwards and elongated peduncle of the petiole. Herein, we provide an update to the identification key and diagnostic characters for the genus Rotastruma.
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Article
Thailand has a great diversity of ant fauna as a zoogeographical crossroads and biodiversity hotspot. The last publication presenting a Thai ant checklist was published in 2005. In the present paper, based on an examination of museum specimens and published records, a comprehensive and critical species list of Thai ants is synthesized. Currently, 529 valid species and subspecies in 109 genera among ten subfamilies are known from Thailand with their diversity and distribution within 77 provinces presented and assigned to six geographical regions. Furthermore, Thailand is the type locality for 81 ant species. Forty-one species are here newly recorded for Thailand with photographs illustrating these species. The checklist provides information on distribution and a comprehensive bibliography. This study will also serve as a guide for the upper northeast and central Thailand, which are poorly sampled; a comprehensive reference list relating to endemic taxa and localities where conservation is an important priority, thus an essential resource for policy makers and conservation planners concerned with the management of insect diversity in Thailand; and a list of exotic ant species found in Thailand, which could possibly impact the ecological balance.