Six new species of Caenis from Thailand are described herein: Caenis ludovicin. sp., Caenis nasutan. sp., Caenis longiforcipatan. sp., Caenis karenaen. sp.,Caenis obtusostilatan. sp. and Caenis acutostilatan. sp., as well as the larvae of Caenis picea Kimmins, 1947 and Caenis ulmerianaMalzacher, 2013, which were so far only known as males. Furthermore, a new species of the genus Kalimaenis, Kalimaenis proceran. sp., is described. Also described from the same area are two new genera of the subfamily Caeninae: Elatosaran. gen. (Type species Elatosara phanomensisn. sp.) most probably belongs to the tribe Clypeocaenini; Thainisn. gen. (Type species Thainis kalimaenoidesn. sp.), is classified within the tribe Caenini. The phylogeny of the new genera is discussed. A larval key to the Caeninae from Thailand is provided and the key to the male Caenis of the Oriental region (Malzacher 2015) is replenished.

Three new species of praying mantids from the forest remnants of Panay Island, Philippines are described and illustrated. Pliacanthopus (Malayamantis) visayanusn. sp. extends the distribution of the genus, so far only known from Sundaland, to the Philippine archipelago. Compsogusa rheaen. gen. n. sp. and Theopompa schulzeorumn. sp. are bark mantids endemic to Panay. The ecological adaptations and the systematic and biogeographic affinities of the new taxa are discussed.

Yunnaniella mandiann. gen. n., n. sp. from South Yunnan is described and illustrated.

In 1900, Henry Suter, a New Zealand malacologist, described six land snail taxa from South America, mostly from Brazil. These taxa received little further attention from malacologists and the unusual depository of its type specimens (New Zealand) caused much confusion in the literature. Suter'S types and taxa are thus revisited in the present work. In summary, the following species are considered valid: Gastrocopta iheringi (Gastrocoptidae), Scolodonta interrupta (Scolodontidae), Radiodiscus compactus, and Radiodiscus patagonicus (Charopidae). Streptaxis tumescens is a junior synonym of Happia vitrina (Scolodontidae) and Pyramidula schuppi is a junior synonym of Rotadiscus amancaezensis (Charopidae).

A comparative morphological investigation of otoliths from two species of Antimora, A. microlepis and A. rostrata was conducted to identify distinguishing species-specific characteristics. Some of the identified characters were shared between the two species studied. Ontogenetic changes in otolith morphology of the two morids studied were evident between small and larger specimens. Otoliths of small-sized individuals have shown the same degree of similarity with the large-sized individuals.

Investigations conducted in the southern Iraq freshwater systems allowed the authors to collect the European catfish, Silurus glanis L., 1758. These are the first confirmed records of S. glanis from the freshwater systems in Lower Mesopotamia, based on 13 adult specimens, each 325–525 mm in total length. Furthermore, a new set of anatomical characters of S. glanis and S. triostegus from Chibayish marsh area, south of Iraq, was examined to reveal similarities and differences between the two Silurus species. In addition to the traditional separation of the two species of Silurus by number of barbels, these two species can now be recognised based on a new set of morphological and osteological features.