Megarthrus of China. Part 5. The M. calcaratus complex, with description of three new species (Coleoptera: Staphylinidae: Proteininae).

Three new species of Megarthrus Curtis from mainland China belonging to the M. calcaratus species complex are described: M. bajie Liu Cuccodoro sp. nov., M. wujing Liu Cuccodoro sp. nov., and M. wukong Liu Cuccodoro sp. nov.. Also pertaining to this lineage of Megarthus, the East Palaearctic M. zerchei Cuccodoro Lbl is reported here to occur in China (new country record). These four species are diagnosed, illustrated, and keyed. Their distribution in mainland China is mapped, and their affinities are briefly discussed.

On the identity of Oberea acuta Gressitt, 1951, O. bisbipunctata Pic, 1916, O. notata Pic, 1936 and O. shimomurainbsp;Kurihara amp; N. Ohbayashi, 2007 br>(Coleoptera, Cerambycidae, Lamiinae) with a new synonym.

Oberea acuta Gressitt, 1951 is redescribed, the diagnosis of O. notata Pic, 1936 and O. bisbipunctata Pic, 1916 were provided based on examination of type material and additional specimens. Illustrations of habitus and genitalia are provided, and a key to separate these three species is presented. Their distribution is critically examined, notably that of O. bisbipunctata, whose previous records in China are invalidated. Oberea shimomurai Kurihara N. Ohbayashi, 2007 is considered a junior synonym of Oberea notata Pic, 1936.

Megarthrus of China. Part 4. The M.hemipterus complex (Coleoptera, Staphylinidae, Proteininae), with description of a new species from Yunnan Province.

The members of the Megarthrushemipterus species complex occurring in China, i.e., M.dentipes Bernhauer, M.flavolimbatus Cameron and M.hemipterus (Illiger), are diagnosed, and a new species attributed to this informal group, M.panda sp. nov., is described from Yunnan Province. All species are diagnosed and illustrated, and their distribution in mainland China is mapped. The limit of the M.hemipterus species complex is refined morphologically.

Megarthrus of China. Part 3. Comments on the occurrence of Megarthrus nitidulus Kraatz, 1857 in China, and description of a new species, with notes on teratology and phoretic acari in the genus (Coleoptera: Staphylinidae: Proteininae).

A new species, Megarthrus heise Zhang, Cuccodoro, Chen Liu sp. nov., resembling Megarthrus nitidulus Kraatz, 1857 is described from Qinghai, Sichuan, Gansu, Shaanxi, Shanxi provinces and Beijing in China. The record of M. nitidulus in China was apparently based on a misidentification, and the species is thus removed from the list of Chinese Megarthrus. Phoresy of acari and teratological modification of the abdomen are also reported for the first time in the genus.

Megarthrus of China. Part 2. Megarthrus basicornis Fauvel, 1904 with description of a new species from Mount Emei (Coleoptera: Staphylinidae: Proteininae).

Megarthrus budai Liu and Cuccodoro sp. nov. from Sichuan province in China is described. It is the first record of the genus from Mount Emei, a temperate biodiversity-rich mountain to which this new species seems to be endemic. Megarthrus basicornis Fauvel, 1904, known so far only from India and Nepal, is reported from China for the first time.These two species have many features found mainly in members of the predominantly Holarctic and African M. depressus supergroup of species.

Two new species of Megarthrus (Coleoptera, Staphylinidae, Proteininae) from Mexican Cloud Forests.

Two new species of Megarthrus are described from cloud forests of the Mexican state of Veracruz: M. cavianae Rodríguez, Navarrete-Heredia Arriaga-Varela sp. nov., and Chiapas:  M. chiapas Cuccodoro sp. nov. They differ from the two hitherto known Mexican species M. altivagans Bernhauer, 1929, and M. alatorreorum Rodríguez Navarrete-Heredia, 2015, both from temperate forests of the Transmexican Volcanic Belt, by having synapomorphic features of the M. inaequalis-supergroup of species. This lineage includes all the Central and South American members of the genus, with the inclusion of these species, the distribution of the group is extend by more than 5 degree of latitude to the North. Within this lineage, the two new species share a very peculiar morphology of the male abdominal sternite VIII found elsewhere in the genus only in M. flavosignatus Bierig, 1940, and M. zunilensis Sharp, 1887, with which they form the M. zunilensis-group of species defined here.

Megarthrus of China. Part 1. Description of a new species resembling M. antennalis Cameron, 1941 (Coleoptera: Staphylinidae: Proteininae).

Megarthrus chujiao Liu and Cuccodoro sp. nov., from Sichuan and Yunnan provinces in China is described and illustrated. It is the third record of the genus in the Hengduan Mountains, and the first endemic Megarthrus species from this temperate biodiversity hotspot. Megarthrus chujiao strongly resembles M. antennalis Cameron, 1941, from Nepal and North India, with which they form a new complex of species-the M. antennalis-complex within the predominantly Holactic and African M. depressus-supergroup of species.

Notes on Iniocyphus iheringi Raffray, 1912 (Coleoptera: Staphylinidae: Pselaphinae).

The only available specimen of Iniocyphus iheringi Raffray, 1912, type species of the type genus of the tribe Iniocyphini Inyocyphus Raffray, 1912, is redescribed and illustrated in detail. The original spelling of the species epithet iheringi is reinstated over jheringi, which was an incorrect subsequent spelling. The specimen examined is designate as the lectotype.

Some taxonomic notes on the genus Oberea Dejean, 1835 from Asia (Coleoptera, Cerambycidae, Lamiinae).

In the current work, the following taxonomic changes of genus Oberea Dejean, 1835 are proposed: Oberea flavescens Breuning, 1947, rest. stat.; Oberea toi Gressitt, 1939, rest. stat.; Oberea sylvia Pascoe, 1858, rest. stat.; Oberea taiwana Matsushita, 1933 = Oberea taihokuensis Breuning, 1962, syn. n.; Oberea sumbana Breuning, 1961 = Oberea antennata Franz, 1972, syn. n.; Oberea brevithorax Gressitt, 1939 is newly recorded from Vietnam.

Taxonomic note of Oberea fuscipennis (Chevrolat, 1852) based on morphological and DNA barcode data (Coleoptera, Cerambycidae, Lamiinae).

Oberea fuscipennis (Chevrolat, 1852) species group is revised based on morphology and DNA barcode data. Oberea diversipes Pic, 1919 and O. infratestacea Pic, 1936 are restored from synonymy. The following two new synonymies are proposed: Oberea fuscipennis ssp. fairmairei Breuning, 1962 = Oberea diversipes Pic, 1919; and Oberea hanoiensis Pic, 1923 = O. fuscipennis (Chevrolat, 1852).

Megarthrus of southern India and Sri Lanka, with notes on their phylogenetic and biogeographical relationships (Coleoptera: Staphylinidae: Proteininae).

South of the Deccan Plateau the genus Megarthrus Curtis was represented so far in the Indian subcontinent only by M. rufomarginatus Cameron, of the hilly areas of Tamil Nadu and Kerala, and Megarthrus bimaculatus Fauvel, of Sri Lanka. Here we describe three additional species from this area: M. nilgiriensis sp. n. and M. narendrani sp. n., both from southern India and strongly resembling M. bimaculatus, and M. lanka sp. n., of Sri Lanka and strongly resembling M. rufomarginatus. The five species of Megarthrus occurring in southern India and Sri Lanka are keyed and illustrated with colour pictures of habitus, genitalia and other main diagnostic characters. They belong to two homogeneous complexes of species-the «bimaculatus-complex¼ and the «rufomarginatus-complex¼-that uniquely share many important features with the Sumatran M. sumatrensis Cameron and the Philippine M. vastus Wendeler, with which they constitute the here defined «vastus-group¼ of species. The Megarthrus fauna of southern India and Sri Lanka appears thus not only disjunct and completely distinct from that phylogenetically and taxonomically much more diverse of North of the Indo-Gangetic Plain, but also directly related to that of the Sunda shelf.

Revision of Neodeuterus Schaufuss and description of a new allied genus from Borneo (Coleoptera: Staphylinidae: Pselaphinae).

The Sumatran genus Neodeuterus is revised, and the two included species are synonymized (i.e., N. admirandus = N. alter syn. n.). In addition, Borneodeuterus gen. n. is erected to accommodate B. sannio sp. n. from Borneo.

List of unavailable infrasubspecific names originally published in Oberea Dejean, 1835, with nomenclatural notes on the genus (Coleoptera: Cerambycidae).

A list of 153 infrasubspecific and therefore unavailable names originally introduced in Oberea Dejean, 1935, is given. All were so far considered by previous authors to have been made available by Breuning in his 1960's global key of the genus. Two of them (Oberea maculithorax v. pulla Matsushita, 1933 and Oberea suturalis v. flaveola Breuning 1960) refer to taxa in Obereopsis Chevrolat, 1855; and Leuconitocris Breuning, 1950, respectively.