Sergey G. Ermilov

Additions to the Ecuadorian, Ethiopian and Nepalese ptyctimous mite fauna (Acari, Oribatida), with description of two new species and remarks on some known species

Annotated checklists of identified ptyctimous mite taxa from Ecuador (7 species, 6 genera, 4 families), Ethiopia (13 species, 6 genera, 4 families) and Nepal (11 species, 7 genera, 4 families) are provided. Acrotritia refracta and Phthiracarus pygmaeus are recorded for the first time in Ecuador; Indotritia krakatauensis, Acrotritia vestita, Arphthicarus inaequus and Plonaphacarus tanzicus are recorded for the first time in Ethiopia; Protoribotritia oligotricha, Acrotritia duplicata and Phthiracarus bryobius are recorded for the first time in Nepal. Two new species, Oribotritia multisetosa Niedbała sp. nov. and Plonaphacarus martensi Niedbała sp. nov., are described from Ecuador and Nepal, respectively. Morphological and/or taxonomical remarks for Ar. inaequus (Niedbała, 1984), Indotritia bellingeri Niedbała & Schatz, 1996, Plonaphacarus rybalovi Niedbała, 2011 and Pl. tanzicus (Mahunka, 1993) are presented. http://zoobank.org/urn:lsid:zoobank.org:pub:DC0E4649-9D0F-4222-A197-6E818CDE6D1C

A new aquatic species of the oribatid mite genus Mucronothrus (Acari, Oribatida, Trhypochthoniidae) from Brazil

The oribatid mite genus Mucronothrus is recorded for the first time in Brazil. A new species, Mucronothrus braziliensis sp. nov. is described from macrophytes in a cool (12.5ºC) spring on the Campo Belo River spring and Brejo da Lapa reservoir, National Park Itatiaia of Brazil, on the basis of adults and tritonymphs. This species is morphologically similar to Mucronothrus nasalis (Willmann) and Mucronothrus willmanni Norton, Behan-Pelletier & Wang; however, it differs from both by the morphology of the bothridial setae, length of notogastral setae cp and position of epimeral setae 2a. An identification key to known species of Mucronothrus is provided. http://zoobank.org/urn:lsid:zoobank.org:pub:3132213A-19F1-42B2-B37B-2483264FAAC4

Two new species of Schalleria (Acari: Oribatida: Microzetidae) from Ecuador with a key to all species of the genus

Two new microzetid mite species of the genus Schalleria, Schalleria brevisetosa sp. nov. and Schalleria pectinata sp. nov., are described. The morphology of the gnathosoma and the legs is presented in detail for the first time for a species of this genus. An identification key to all known species of Schalleria is provided. http://zoobank.org/urn:lsid:zoobank.org:pub:32E03098-C8EA-46C6-B46F-326148374207

PERXYLOBATES THANHOAENSIS, A NEW SPECIES OF ORIBATID MITE FROM VIETNAM (ACARI: ORIBATIDA: HAPLOZETIDAE)

ABSTRACT The oribatid mite genus Perxylobates (Acari: Oribatida: Haplozetidae) comprises 14 named species. We describe species Perxylobates thanhoaensis n. sp., based on adult specimens collected in decaying wood debris and the soil surface layer from Ben En National Park, Thanh Hoa Province, North Central Vietnam. A new species is most similar to Perxylobates obesus Bayoumi, 1977 and Perxylobates guehoi Mahunka, 1978, but differs from these species by the sizes of body, the length of lamellar setae, the poorly developed transverse line between lamellar setae, the length of notogastral setae, the tooth on anterior margins of the pteromorpha, and the length and morphology of some epimeral setae.

The oribatid mite fauna (Acari, Oribatida) of the Bu Gia Map National Park (southern Vietnam), with description of two new species

The oribatid mite fauna of the Bu Gia Map National Park (southern Vietnam) consists of 86 species belonging to 65 genera and 31 families. A list of known species collected during Joint Russian–Vietnamese Biological Expedition in November 2013 is provided. Six species, Dendrohermannia monstruosa, Reteremuloides bifurcatus, Tecteremaeus incompletus, Arcoppia serrutala, Dolicheremaeus cf. baloghi and Leptotocepheus murphyi, and four genera, Dendrohermannia, Reteremuloides, Granuloppia and Leptotocepheus, are recorded in Vietnam for the first time; A. serrutala and Granuloppia are recorded for the first time in the Oriental region. Two species of the genus Dolicheremaeus, D. angustus and D. murphyi, were transferred in the genus Leptotocepheus. Two new species, Hermanniella bugiamapensis sp. nov. and Granuloppia vietnamensis sp. nov., are described. http://zoobank.org/urn:lsid:zoobank.org:pub:41B5BAB1-555A-499D-95C7-337D7B767940

Rediscovery of Arthrodamaeus rossicus (Acari: Oribatida: Gymnodamaeidae) with remarks on its generic status and ontogeny of the genus

Herein, the first detailed description of adults and juvenile instars of Arthodamaeus rossicus along with detailed illustrations are provided. Taxonomic status and generic placement of this species are discussed, and it is assigned to Arthrodamaeus (comb. nov.). The larva and nymphs are generally similar in their habitus. Basic characteristics in juveniles are the less sclerotized and unpigmented body with granulate surface of gastronotum, larva with 12 pairs of gastronotal setae, nymphs with 10 pairs of gastronotal setae (setae la, lm and d-series absent, but setae lp and p-series present). Larvae have a faint transverse ridge-like structure on prodorsum between interlamellar setae, whereas nymphs have no ridge-like structure on prodorsum, but with large excrescence on posterior end of gastronotum, bearing one pair of long (h1) setae. Conspicuous characters in the larval stage are the long interlamellar setae, which are reduced in nymphs and adults to minute setae, and the various lengths of gastronotal setae. All stages of nymphs carry gastronotic exuviae with reticulate granular sculpture of the previous instars. Adults are coated with thick cerotegument on the idiosoma, legs and most body setae. The sensillus is dilated in its distal part and strongly barbed. The notogaster has three pairs of irregular longitudinal ridge-like structures (procuticle); a pair of subtriangular tubercles Sa; five pairs of notogastral setae and a pair of strongly developed tubercles Sp on epimeral region III. Comparative characteristics of juvenile stages and adults of species belonging to Arthrodamaeus are given based on our own data and available literature sources. Arthodamaeus rossicus is a Western Palaearctic species, currently known from Eastern Europe (European part of Russia), and appears to be primarily an inhabitant of mixed forests. It prefers the soil, mosses on soil and trunks of trees as well as decaying stumps of deciduous trees.

Figure 3 A – E. Oribotritia Aokii Mahunka, 1987 In New Species And Records Of Ptyctimous Mites (Acari, Oribatida) From The Philippines

FIGURE 3 A – E. Oribotritia aokii Mahunka, 1987, specimens from Philippines: A, B, specimen 1. A—prodorsum with anterior part of opisthosoma, lateral view; B—anterior part of femur I. C – E, specimen 2. C—prodorsum with anterior part of opisthosoma, lateral view; D—right anal and adanal plates with lower part of genital and aggenital plates; E – anterior part of femur I. Scale bars 100 µm (A, C), 50 µm (D), 25 µm (B, E).

A NEW SPECIES OF ORIBATID MITES OF THE GENUS PERSCHELORIBATES (ACARI, ORIBATIDA, SCHELORIBATIDAE) FROM СUBA

A new species of the genus Perscheloribates—P. (Perscheloribates) curiosus Ermilov sp. n.—is described and illustrated on the basis of adult specimens collected from leaf litter in forests of Сuba. The new species is morphologically most similar to P. (Perscheloribates) luzonensis Corpuz-Raros, 1980; however, it differs from the latter by the presence of bothridial setae pointed distally (vs. rounded), custodia (vs. absent) and well visible notogastral setae (vs. posterior setae hardly visible, other setae represented by alveoli).

New species and records of ptyctimous mites (Acari, Oribatida) from Cuba.

An annotated checklist of identified oribatid mites from Cuba, including 16 species, 9 genera and 4 families, is provided. Three new species, Prototritia triangularibus Niedbała sp. nov. (Protoplophoridae), Hoplophthiracarus vinalesensis Niedbała sp. nov. and Protophthiracarus paratripartitus Niedbała sp. nov. (both Steganacaridae), are described from leaf litter. Three species of the subgenus Atropacarus (Hoplophorella)-A. (H.) andrei (Balogh, 1958), A. (H.) brachys Niedbała, 2004 and A. (H.) stilifer (Hammer, 1961)-are recorded in the Cuban mite fauna for the first time.

The soil mite genus Costeremus (Acari: Oribatida: Hungarobelbidae), with new finding from southern Siberia

This work deals with taxonomy, geographical distribution as well as known ecology of oribatid mites of the genus Costeremus Aoki, 1970 in the world. All species belonging to this genus were known to be distributed in eastern Asia. The species of Costeremus are inhabitants of the litter of various types of forests, consisting mostly of broad-leaved trees. A new species, Costeremus stebaevae sp. nov. is described from the moss-lichen cover growing on the soil of cold tundra habitat in Mt. Kuznetsk Alatau, Khakassiya, Republic of Russia in Southern Siberia. Thus, Costeremus is recorded for the first time from outside of the eastern Asia. The family placement of Costeremus is briefly discussed. Furthermore, a key is provided for the identification of adults of the two genera of Hungarobelbidae and known species of Costeremus in the world. http://zoobank.org/urn:lsid:zoobank.org:pub:21319B93-5E52-4EF1-8BEA-F22278CA9045