Abstract Leading zoologist and taxonomist Ernest Marcus (1893-1968) and his school described numerous new invertebrate taxa, including planarians, or triclads (Platyhelminthes). These authors rarely provided the etymology of names for the new taxa. In this paper, the etymology of 149 names of genera and specific epithets of planarians lacking etymology (or honoring people) is investigated. The etymology of most names was retrieved from original descriptive papers and from Eudóxia Maria Froehlich’s recollections, a fellow of Marcus’ school. It was discovered that the names were usually freely derived from words of the language spoken in the country where the species was found. Some names were motivated by an aspect of the biology of the species. Other names honored people or are arbitrary. The etymology of 19 names could not be retrieved and are only suggested. The origin of another 19 names could not be discovered, nor even their meaning. Knowing the etymology makes it easier to memorize a name and it is a way to preserve the historical and emotional aspects of the authors. Through the retrieved etymologies, the personality of Marcus can also be glimpsed.

ABSTRACT: The food preference of Obama anthropophila Amaral, Leal-Zanchet & Carbayo, 2015, a species that seems to be spreading across Brazil’s human-modified environments, was investigated. Extensive experiments led to the conclusion that the generalized diet of this species may have facilitated its dispersal. The analysis of 132 feeding records of 44 geoplaninid species revealed a tendency for closely related species to feed on individuals from similar taxonomic groups, suggesting that in this group behavioral evolution is more conserved than phylogenetic diversification.

Mediante consulta bibliográfica e de bases de dados encontramos registros para o estado de São Paulo de 312 espécies de turbelários (incluindo Acoelomorpha, novo filo) de ambientes marinhos, límnicos e terrestres. Em 1999 haviam sido registradas aproximadamente 333 espécies; o número maior deve ser atribuído a espécies posteriormente sinonimizadas e, provavelmente, à precisão menor dos cômputos anteriores. Os dois únicos pesquisadores especialistas do grupo, trabalhando no estado, estimam, porém, um número muito maior. Há três coleções científicas abrigando turbelários, quase exclusivamente, terrestres.

A recent survey of the literature and databases on turbellarian fauna from the State of São Paulo, Brazil, yielded a total of 312 species (including Acoelomorpha, a new phylum) inhabiting marine, as well as freshwater, and terrestrial habitats. In 1999, approximately 333 species were registered. This higher number is related to a number of species synonymized thereafter, and probably related to lower accuracy of prior accounts. Nonetheless, the only two taxonomists studying this animal group in the State estimated a much higher actual number of species. In the State there are three scientific collections containing turbellarians, almost exclusively from terrestrial habitats.

Nas últimas décadas tem crescido o esforço internacional para conhecer a biodiversidade mundial visando a criação de políticas públicas de conservação. O Brasil vem participando deste esforço, como evidenciam as recentes publicações sobre o estado do conhecimento de vários táxons de organismos. Os macroturbelários (Polycladida e Tricladida, Platyhelminthes) fazem parte da fauna mundialmente menos estudada. Neste trabalho inventariamos por regiões a diversidade da fauna brasileira conhecida de macroturbelários e comparamos esta diversidade com a do resto do mundo. Analisamos também a atividade dos taxonomistas brasileiros do grupo no contexto mundial. Os resultados mostram que praticamente a totalidade das 246 espécies nominais descritas procede das regiões Sudeste e Sul. O número de espécies deverá aumentar significativamente quando forem feitas novas coletas, tanto em biomas e regiões ainda pouco ou nada explorados quanto nas áreas já amostradas. O Brasil está, relativamente a outros países, bem provido de especialistas. No entanto, em face da grande diversidade estimada, as amostragens deveriam ocorrer concomitantemente com a formação de novos especialistas.

In the last decades, international efforts have increased, with the aim of acquiring greater knowledge on worldwide biodiversity and to propose adequate conservation policies. Brazil has joined in these efforts, as is shown by recent publications on the state of knowledge of several taxa of organisms. The macroturbellarians (Polycladida and Tricladida, Platyhelminthes) are part of one of the less studied faunal groups, not only in Brazil but also in other regions of the world. In the present study we inventoried the knowledge on the diversity of Brazilian macroturbellarians and make a comparison with that from the rest of the world. We also analyze the accomplishments of Brazilian taxonomists dealing with macroturbellarians, with regard to the world context. Our results show that almost all of the 246 described species are from the South-eastern and Southern regions. The number of species will increase significantly when new samples are undertaken in biomes and regions still little or non-sampled, as well as in already explored areas. Brazil is relatively well provided with specialists in relation to other countries. Nonetheless, in view of the high numbers of estimated diversity, new samples should concur with the academic formation of new taxonomists.

A new species of Notogynaphallia Ogren & Kawakatsu, 1990, from Southern Brazil, is described. Notogynaphallia ceciliae sp. nov. has an elongated body with parallel margins and five dorsal dark longitudinal stripes on a yellowish ground. It possess branched efferent ducts, each branch opening separately into the anterior and median thirds of the long prostatic vesicle. Comparative commentaries on the most important characters of the external and internal morphology of the 23 species of the genus are also presented, so delimiting smaller inside groups.