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A cladistic analysis of the genus Atlantodesmus Hoffman, 2000 is presented. With a total of 11 taxa and 30 morphological characters, and under implied weighting (k = 3), two equally most parsimonious trees (length = 58 steps; total fit = 23.150; CI = 0.64; RI = 0.64) recovered the monophyly of the genus. The resulting synapomorphies are: absence of a ventral projection on the post-gonopodal sternites; presence of folds on the dorsal edge of the prefemoral region of the gonopod; and one homoplastic transformation: presence of a cingulum. In addition, Atlantodesmus sierwaldae sp. nov. is described from the state of Minas Gerais, in the Brazilian Cerrado, and a key to the males of the genus is provided.
We examined the type specimens and historical collections holding puzzling Atlantic and Mediterranean material belonging to the genus Schizoretepora Gregory, 1893. We performed a detailed study of the colonial characters and re-describe the resulting species and those that have rarely been found or have poor original descriptions. As a result of this revision, nine species are found in the northeast Atlantic and Mediterranean. Six of them are re-described and illustrated: S. aviculifera (Canu & Bassler, 1930), S. calveti d’Hondt, 1975, S. imperati (Busk, 1884), S. sp. nov.? (= S. imperati sensu O'Donoghue & de Watteville 1939) (in open nomenclature, specimen lacks ovicells), S. pungens (Canu & Bassler, 1928) and S. solanderia (Risso, 1826). For S. dentata (Calvet, 1931), no material remains; furthermore, S. hassi Harmelin, Bitar & Zibrowius, 2007 and S. serratimargo (Hincks, 1886) have recently been described and redescribed, respectively. This new arrangement attains a coherent geographical distribution: S. imperati seems restricted to the eastern Atlantic, S. dentata and S. calveti are deepwater species from Atlantic islands, S. pungens and S. aviculifera dwell on the African coasts of the Western Mediterranean, S. hassi and S. sp. nov.? (=S. imperati sensu O’Donogue & de Wateville 1939) are confined to the Eastern Mediterranean, and S. solanderia and S. serratimargo live on the European coasts of the Mediterranean.
In this study we describe a new species of the click-beetle genus Lacon Laporte, 1838 from the relict Hyrcanian forest in northern Iran. Lacon mertliki sp. nov. is morphologically similar to L. lepidopterus (Panzer, 1801) but differs from the latter in the body coloration and pubescence, the shape of pronotum and scutellar shield, and male and female genitalia. We provide brief data on its ecology as well as an identification key to all Lacon species in Iran. Additionally, we synonymize Lacon nadaii Platia & Németh, 2011 with Lacon unicolor (Candèze, 1874).
Macrostemum is the second largest genus of Macronematinae with about 104 described species distributed in the Neotropical (18), Afrotropical (20), Australasian (7), Palearctic (2), Nearctic (3) and Oriental (54) regions. Despite its great diversity, knowledge about its immature stages is scarce: worldwide, only 7 species (6.7%) have larvae and/or pupae described. From the Neotropics, only one species, Macrostemum ulmeri (Banks, 1913), has described larvae and pupae. The objectives of this study are to describe and illustrate a new species, Macrostemum araca sp. nov., based on adult males and females from Serra do Aracá, Amazonas, Brazil, and the larvae and pupae of M. brasiliense (Fischer, 1970) from an Atlantic Forest fragment in São Paulo state using the metamorphotype method. In addition, this species is recorded for the first time for Minas Gerais state.
During a recent investigation of the benthic macrofauna from coastal lagoons of southern Benin (Ahémé, Nokoué and Porto-Novo lagoons), a new species of the amphipod genus Quadrivisio Stebbing, 1907, Q. laleyei sp. nov. was collected by means of different quantitative and non-quantitative methods (plastic baskets, wooden artificial substrates, uprooted plants and Surber net) in their intertidal macrophyte zone. The new species can be easily distinguished from most of the other species of the genus by the setation of the mandibular palp and telson and a reduced number of articles (4–6) on the accessory flagellum of the first antenna. The new species closely resembles to Q. lutzi (Shoemaker, 1933) but clearly differ by a reduced armature of the urosomites 1 and 2 and by the geographical distribution (Q. lutzi being known only in Central and South America). Ecological data and an updated key to a species in the genus Quadrivisio are provided.
The 'D. bakoue species complex' Rafael, 1984 ('D. montium species group' Da Lage et al., 2007) comprises seven Afrotropical species. Using complete mitochondrial genome sequences and detailed morphological analysis, we revised thephylogenetic relationships between these species including two new ones. We found the 'D. bakoue species complex' to be a junior synonym of the 'D. seguyi species complex' Lachaise, 1971 and its seven species polyphyletic. We thus classified the species into three complexes, the 'D. seguyi species complex' comprises D. seguyi Smart, 1945, D. malagassya Tsacas & Rafael, 1982, D. curta Chassagnard & Tsacas, 1997 and D. chocolata sp. nov., the new 'D. tsacasi species complex' comprises D. tsacasi Bock & Wheeler, 1972 and D. seguyiana Chassagnard & Tsacas, 1997, and the new 'D. vulcana species complex' comprises D. vulcana Graber, 1957 and D. mylenae sp. nov. Drosophila bakoue Tsacas & Lachaise, 1974 could not be assigned to any of the defined complexes. The two new species are endemic to Madagascar and we report the presence of D. seguyi and D. curta in Mayotte and Madagascar, respectively. The results hence represent a significant step towards understanding the diversity and evolution of this species group in Africa and the islands of the Western Indian Ocean.
Ampharete oculicirrata sp. nov. (Annelida: Ampharetidae) is described from samples collected by the Joint Nature Conservation Committee and Marine Scotland Science, in the West Shetland Shelf NCMPA in the NE Atlantic. This species is characterised by a very small body size, thin and slender paleae, twelve thoracic and eleven abdominal uncinigers, presence of eyes both in the prostomium and the pygidium, the latter provided with a pair of long lateral cirri. The external micro-morphology of the new taxon was studied using scanning electron microscopy and compared with species described or reported from the North Atlantic. Two complementary keys to all species of Ampharete in the area are also provided.
The gigas species group of the subgenus Canthidium (Neocanthidium) is defi ned and described. This species group is composed of three described species [C. gigas Balthasar, 1939, Brazilian Atlantic Forest, including intrusions into Cerrado, C. bokermanni (Martínez et al., 1964), Chaco and western Cerrado in Brazil, Bolivia, Paraguay, and Argentina, and C. kelleri (Martínez et al., 1964), Brazilian Cerrado and neighbouring open areas] and three new species: Canthidium stofeli sp. nov. from the western and southern regions of the Brazilian Amazon, Canthidium feeri sp. nov. from French Guiana, and Canthidium ayri sp. nov. from the Brazilian Atlantic Forest. We present descriptions and redescriptions, illustrations, an identifi cation key and comments on the distributions of the species of the gigas group.
A new species of Tethya Lamarck, 1815 is described from a depth of 1000 m on the continental slope of the Great Australian Bight (GAB), southern Australia. The GAB slope was explored as part of systematic benthic surveys to understand unexplored communities in the light of current oil and gas exploration activity in the area. Tethya irisae sp. nov. was present at 1000 m in six of eight longitudinal depth surveys. Three molecular markers were obtained: COI, 28S (D3–D5) and ITS1-5.8S-ITS2. COI and 28S phylogenetic analyses show that the new species fits clearly within the genus Tethya. This is the 28th species of Tethya reported from Australia; it is unusual in that it has a stalk. The presence of a stalk as a morphological character to split genera in this family is questioned. The description of this new species is an opportunity to revisit the molecular phylogeny of the Tethyida Morrow & Cárdenas, 2015 using comprehensive datasets of COI and 28S markers. As in previous analyses, four Tethya clades were retrieved; we discuss the possibility of using external colour to support some of these clades. Despite unclear phylogenetic relationships amongst Tethyidae Gray, 1848 from Australia, our results suggest that tethyid genera Tethytimea Laubenfels, 1936, Tectitethya Sarà, 1994, Laxotethya Sarà & Sarà, 2002, Stellitethya Sarà, 1994, and Xenospongia Gray, 1858 derive from species of Tethya. We show that asters have been secondarily lost at least twice in the Hemiasterellidae Lendenfeld, 1889: in Liosina Thiele, 1899 and a potential new genus from northern Australia. We formally propose the reallocation of Liosina from Dictyonellidae van Soest, Diaz & Pomponi, 1990 to Hemiasterellidae Lendenfeld, 1889.
In the present paper three empidoid fly species new to science are described from the island Sal of the Cabo Verde archipelago. Aphrosylus salensis sp. nov., a marine dolichopodid fly, is found in the splash zone of a rocky sea shore. Crossopalpus salensis sp. nov. (Hybotidae) is recorded from two different sebkhas. Crossopalpus complicatus sp. nov. is reported from an irrigated wasteland. A key to the species of these two genera occurring on Cape Verde is provided. The presence of the morphospecies Tachytrechus tessellatus (Macquart, 1842), a presumed Old World tropical species, is confirmed.
Revision of the land snail genus Landouria Godwin-Austen, 1918
(Gastropoda, Camaenidae) from Java
(2019)
A revision of the land snail genus Landouria Godwin-Austin, 1918 (Camaenidae) from Java reveals that this group represents the most diverse land snail radiation on that island. Only six species of Landouria were recognized from Java in the last revision of the genus based on shell characters. Our investigation, which also considers the genitalia as well as DNA sequences, shows that the diversity in Java is much higher. Based on newly collected specimens as well as museum material, twenty-eight species of Landouria from Java are described and figured. To stabilize the nomenclature, neotypes are designated for L. winteriana (Pfeiffer, 1842) and L. rotatoria (Pfeiffer, 1842). Sixteen species are described as new to science, i.e., L. naggsi sp. nov., L. parahyangensis sp. nov., L. nusakambangensis sp. nov., L. petrukensis sp. nov., L. tholiformis sp. nov., L. madurensis sp. nov., L. abdidalem sp. nov., L. sewuensis sp. nov., L. tonywhitteni sp. nov., L. sukoliloensis sp. nov., L. nodifera sp. nov., L. pacitanensis sp. nov., L. zonifera sp. nov., L. pakidulan sp. nov., L. dharmai sp. nov. and L. menorehensis sp. nov. Landouria conoidea (Leschke, 1914) comb. nov., L. intumescens (Martens, 1867) comb. nov., L. moussoniana (Martens, 1867) comb. nov., L. schepmani (Möllendorff, 1897) comb. nov. and L. leucochila (Gude, 1905) comb. nov. are considered valid species of the genus Landouria for the first time. Plectotropis kraepelini Leschke, 1914 syn. nov. is considered a probable synonym of L. winteriana (Pfeiffer, 1842), P. trichotrochium Möllendorff, 1897 syn. nov. is a synonym of L. epiplatia (Möllendorff, 1897) and the preoccupied name Helix squamulosa Martens, 1867 syn. nov. is a synonym of L. madurensis sp. nov. We estimate that there are actually more than fifty species of Landouria in Java because many shell samples could not be classified and because no material is available from several regions of the island. A molecular phylogeny reveals that the species from Java do not form a monophyletic group, but that at least one species from Timor is nested within Javanese clades. This means that the Oriental Landouria crossed Wallace's line, the supposed border between the Oriental and Australo-Papuan regions, at least twice and supports the conclusion that Wallace's line does not represent a more severe barrier for terrestrial organisms than other straits through the archipelago. Within the Javanese clades, species from western and eastern Java are mixed, indicating frequent dispersals also within Java.
Three new species of the genus Mimetus Hentz, 1832 are described and named as M. bucerus sp. nov. (♂), M. lingbaoshanensis sp. nov. (♂♀) and M. yinae sp. nov. (♂♀). Detailed morphological descriptions, photos of the body and copulatory organs, line drawings of copulatory organs, as well as the distribution maps are provided.
Walter Biese described Littoridina santiagensis Biese, 1944 (Cochliopidae) from Estero Dehesa in 1944 based exclusively on external shell features and a second allopatric population in Yeso Spring three years later. Since 2011 different samplings have been carried out at the type locality and have only provided specimens of the morphologically similar invasive mudsnail Potamopyrgus antipodarum Gray, 1843 (Tateidae), raising doubts about the identity of the species. The recent finding of two snail morphotypes in Yeso Spring, a thick shelled form congruent with type specimens of L. santiagensis and a slender one morphologically associable to P. antipodarum, allowed comparative studies, including the taxonomic analysis of additional populations with similar shell morphology occurring in central Chile. A DNA barcoding (COI) approach identified the slender form from Yeso Spring in Maipo Basin and a second population from the contiguous Rapel Basin indeed as the invasive P. antipodarum; however, L. santiagensis was recovered among species of Potamolithus Pilsbry, 1896 (Tateidae), justifying the Potamolithus santiagensis (Biese, 1944) comb. nov. Besides recognition of three other populations as belonging to Potamolithus, the molecular analysis also suggests trans-Andean dispersal of this group of snails in the Southern Cone of South America.
Jeekelosoma Mauriès, 1985, is upgraded from subgenus status under Eviulisoma Silvestri, 1910 to full genus status. The type species, Jeekelosoma abadi (Mauriès, 1985) is redescribed based on topotypical material from a cave in Morocco. Jeekelosoma heptarachne sp. nov. and J. viginti sp. nov. are described from two further Moroccan caves.
Seventy-four species, forms and varieties of Cubitermes Wasmann, 1906 have been studied, including taxa placed in synonymy with other species. Within this group of taxa, the enteric valve, mainly of the workers and soldiers, provided the best and the only clear-cut criteria for distinguishing some major subsets that are proposed here as species groups.The genus Cubitermes is re-described; the morphologies of the enteric valves are described in detail including the number of spatulae at the downstream end of the primary cushions; the possible presence of crests or bulges near the downstream end of the primary cushions; the overall shape of the primary cushions; the number of lateral supporting bristles; the kind of symmetry of the valve; and the structure of the secondary cushions. These characteristics are used to define nine species groups. For now, these groups have no taxonomic ranking but are helpful as regards species recognition. Identification keys for species groups are provided for soldiers and workers together with a partial key for imagines. Geographical ranges of the groups are also provided. On the basis of enteric valve morphology, some synonymies can no longer be validated: (a) C. planifrons Sjöstedt, 1924 is not a synonym of C. fungifaber (Sjöstedt, 1896); (b) C. kemneri Emerson, 1928 is not a synonym of C. zenkeri (Desneux, 1904); and (c) C. fungifaber var. elongata Sjöstedt, 1924 does not belong to the species C. fungifaber. Cubitermes planifrons and C. kemneri become valid again and C. fungifaber var. elongata is an invalid name.
Micro-computed tomography for natural history specimens: a handbook of best practice protocols
(2019)
Micro-computed tomography (micro-CT or microtomography) is a non-destructive imaging technique using X-rays which allows the digitisation of an object in three dimensions. The ability of micro-CT imaging to visualise both internal and external features of an object, without destroying the specimen, makes the technique ideal for the digitisation of valuable natural history collections. This handbook serves as a comprehensive guide to laboratory micro-CT imaging of different types of natural history specimens, including zoological, botanical, palaeontological and geological samples. The basic principles of the micro-CT technology are presented, as well as protocols, tips and tricks and use cases for each type of natural history specimen. Finally, data management protocols and a comprehensive list of institutions with micro-CT facilities, micro-CT manufacturers and relative software are included.
Several taxonomic groups within Empidoidea Latreille, 1809 have been subject to unclear phylogenetic assignments along with multiple parallel hypotheses causing difficulties in classification and morphological identification. This study reviews the internal classification of the Ragadidae and includes a diagnosis and description of all included subfamilies and genera based on the results of an analysis of morphological characters using maximum parsimony. Illustration of important characters and a key to all genera in the family is given. The genus Hormopeza Zetterstedt, 1838 is found to be most closely related to Anthepiscopus Becker, 1891 and Iteaphila Zetterstedt, 1838, and the subfamily Iteaphilinae Wahlberg & Johanson, 2018 is therefore expanded to also include that genus. Hormopeza is consequently excluded from Ragadinae Sinclair, 2016. This study provides diagnoses, descriptions and keys in a contribution to a thorough classification of the empidoid groups and increased ease in morphological recognition.
The African shieldbug genus Afrius Stål, 1870 is revised. Cantheconidea migratoria Distant, 1913 and A. williamsi Miller, 1952 are proposed as junior synonyms of A. (Subafrius) flavirostrum (Signoret, 1861) whereas Canthecona marmorata Dallas, 1851, Canthecona annulipes Dallas, 1851 and A. rubromarginatus Bergroth, 1903 are proposed as junior synonyms of A. (Afrius) purpureus (Westwood, 1837) based on the general morphology and genitalia of the species. The three valid species, viz. A. (Subafrius) flavirostrum, A. (Afrius) kolleri Schouteden, 1911 and A. (Afrius) purpureus, are redescribed with details of male and female genitalia morphology, and a lectotype is designated for A. (Afrius) kolleri. A key to identify the species as well as an update of the geographical distribution for each species are provided, including new records for A. (Afrius) purpureus.
Polysyncraton Nott, 1892 is the second largest genus of didemnid ascidians; it has a wide distribution ranging from temperate to tropical waters. Seventy-one specimens of Polysyncraton from eight museum collections and recently collected samples were analyzed. This resulted in the description of three new species (P. cabofriense Oliveira & Rocha sp. nov. from Brazil, P. globosum Oliveira & Rocha sp. nov. from Australia and P. snelliusi Oliveira & Rocha sp. nov. from Suriname) and emended descriptions of three further species (P. amethysteum (Van Name, 1902), P. magnilarvum (Millar, 1962) and P. purou C. Monniot & F. Monniot, 1987).