A new species of the genus Becker, 1923 and the first records of this genus for Europe (Diptera, Asilidae).

A new species of Becker, 1923, Álvarez Fidalgo & van den Broek, , is described from Spain, representing the first record of this genus for Europe. It is illustrated in high-resolution photographs and the first ecological information is provided, as well as a key to all species tentatively placed in this genus.

A pictorial key for identification of the hoverflies (Diptera: Syrphidae) of the Madeira Archipelago.

Background: Syrphid flies are important ecological indicators and provide crucial ecosystem services, being important pollinators and biological control agents of insect pests. These charismatic insects are conspicuous and, due to their size and colourful patterns, are relatively easy to identify. However, the lack of user-friendly literature (e.

The tribe Phanerotomini (Hymenoptera, Braconidae, Cheloninae) of the Arabian Peninsula, with special reference to the United Arab Emirates and Yemen.

For the first time the tribe Phanerotomini (Braconidae, Cheloninae) of the Arabian Peninsula is revised, illustrated by colour photographs and keyed. It resulted in twenty-one new species (of which 20 species belong to the genus and representing 75% of the reported species): , , , , , , , , , , , , , , , , , , , , and Reported as new for United Arab Emirates and Yemen are van Achterberg, 1990, Fahringer, 1934, and Kriechbaumer, 1894 (the latter also for Saudi Arabia), for United Arab Emirates Kohl, 1906, and Zettel, 1988, and for Yemen Lyle, 1924, Edmardash & Gadallah, 2019, and Fischer, 1968. Hedqvist, 1965, is synonymised with Kriechbaumer, 1894.

First records and three new species of the family Symphytognathidae (Arachnida, Araneae) from Thailand, and the circumscription of the genus Wunderlich, 1995.

The family Symphytognathidae is reported from Thailand for the first time. Three new species: , , and are described and illustrated. Distribution is expanded and additional morphological data are reported for Lin & Li, 2009.

Numerous new records of tropical non-indigenous species in the Eastern Mediterranean highlight the challenges of their recognition and identification.

New data on 52 non-indigenous mollusks in the Eastern Mediterranean Sea is reported. sp. (aff.

A third species of the rarely collected Oriental hoverfly genus Cheng, 2008 (Diptera, Syrphidae, Microdontinae).

is described from Peninsular Malaysia, based on a single female collected in 1962. The other two known species of this genus are also known from single specimens, from Southeastern China and Nepal. A key to the species is given, and the taxonomy and distribution of the genus are discussed.

Emery, 1898 (Formicidae, Hymenoptera): a cryptic globally introduced species.

The discovery in the Netherlands in a shipping container of the ant Emery, 1898, a species similar to the invasive pharaoh ant (Linnaeus, 1758), led to a quest to better define the distribution of this species, which was initially obscure due to uncertain specimen identifications. Here it is shown that , like , is found worldwide, almost certainly as a result of introductions. Including quarantine interceptions, this species is recorded from seven global biogeographic regions, but its established outdoor distribution is currently limited to the tropics and subtropics.

Lost lovers linked at long last: elusive female mystery solved after a century of being placed in a different genus (Phasmatodea, Phylliidae).

After successful laboratory rearing of both males and females from a single clutch of eggs, the genus Redtenbacher, 1906 (described only from males) and the species group within Phyllium (Pulchriphyllium) Griffini, 1898 (described only from females) are found to be the opposite sexes of the same genus. This rearing observation finally elucidates the relationship of these two small body sized leaf insect groups which, for more than a century, have never been linked before. This paper synonymizes the species group with Redtenbacher, 1906 in order to create a singular and clearly defined taxonomic group.

Splitting the leafmining shield-bearer moth genus Hübner (Lepidoptera, Heliozelidae): North American species with reduced venation placed in new genus, with a review of heliozelid morphology.

The new genus is described to harbour Nearctic heliozelid moths with reduced venation, previously placed in Hübner, 1825, with type species van Nieukerken & Wagner, 2012. The erection of this genus has become possible now that monophyly has been supported by a recent phylotranscriptomics analysis. Six species are combined in this genus: (van Nieukerken & Wagner, 2012), , (Chambers, 1874), , (Chambers, 1874), , (Braun, 1927), , (Braun, 1927), , (Clemens, 1860), and two candidate species are recognised.

A revision of the genus Rondani (Diptera, Diopsidae) in Sri Lanka with descriptions of two new species and a review of the other stalk-eyed flies from the island.

The literature on Sri Lankan Diopsidae is reviewed. Eight Diopsidae are now known to occur in Sri Lanka, five species in the genus and one species each in the genera , , and . The presence of requires confirmation to exclude the possibility of mislabelling.

The genera and (Gastropoda, Rissooidea, Amnicolidae and Pomatiopsidae) in Bhutan and elsewhere in the eastern Himalaya.

Shells of the Rissooidea species that are known from Bhutan are characterized. is reported from that country for the first time. Two species from Bhutan are described as new to science, viz.

The value of a single character: the Paleogene European land snail Grateloup, 1827 is likely a cyclophorid (Gastropoda, Caenogastropoda).

Grateloup, 1827 is a European Paleogene land snail genus, which is currently classified in its own family, the Ferussinidae Wenz, 1923 (1915), in the superfamily Cyclophoroidea. The shell of this genus is remarkable by its last quarter whorl turning towards the apex instead of away from it, which is an unusual trait in terrestrial snails. We show, however, that this trait has evolved at least nine times in terrestrial Eupulmonata and Caenogastropoda, and it does not justify distinction at the family level in any of the reported cases.

A new species of (Diptera, Syrphidae) from the Kingdom of Bhutan, the easternmost representative of the subgroup.

A new species of , Smit , is described from Bhutan. This species belongs to the subgroup of the species group. Seven species are currently known within this subgroup: four European, one of which is also found in the Near East, and three more only known from Tajikistan.

Resolving species boundaries in the species group (Gastropoda, Pterotracheoidea).

Atlantid heteropods are a family of holoplanktonic marine gastropods that occur primarily in tropical and subtropical latitudes. Atlantids bear a delicate aragonitic shell (<14 mm) and live in the upper ocean, where ocean acidification and ocean warming have a pronounced effect. Therefore, atlantids are likely to be sensitive to these ocean changes.

Revision of the Neotropical hoverfly genus Reemer (Diptera, Syrphidae, Microdontinae).

The species of the Neotropical hoverfly genus Reemer, 2013 are revised, based on morphological characters with aid of mitochondrial DNA barcodes. The resulting number of valid species is increased to 31, of which the following seven are described as new: Reemer, , Reemer, , Reemer, , Reemer, , Reemer, , Reemer, , and Reemer, Two new synonymies are established: Curran, 1925, and Curran, 1925, are both junior synonyms of Fabricius, 1805. A neotype is designated for Sack, 1921.

The FLORIVON flora survey in the Netherlands between 1902 and 1950.

In 1902, the nationwide citizen science project, known as FLORIVON, for mapping the flora of the Netherlands was launched, resulting in the publication of a complete flora atlas in 1980. Until 2004, the atlas dataset of the fieldwork between 1902 and 1950 had only been partly digitised and observations were aggregated and anonymised. Between 2001 and 2018, the dataset has been entirely digitised from the original field forms, including notes on non-native taxa.

Further study of two Chinese cave spiders (Araneae, Mysmenidae), with description of a new genus.

The current paper expands knowledge of two Chinese cave spider species originally described in the genus Gertsch, 1960: Miller, Griswold & Yin, 2009 and Miller, Griswold & Yin, 2009. With the exception of these two species, the genus is endemic to the western hemisphere, and new evidence presented here supports the creation of a new genus for the Chinese species, which we name The male of is described for the first time. Detailed illustrations of the habitus, male palps and epigyne are provided for these two species, as well as descriptions of their webs.

Twelve new and exciting Annonaceae from the Neotropics.

As a result of concerted efforts of the community of Annonaceae taxonomists, increasingly detailed knowledge of the diversity of the Neotropical genera has been documented. With the exception of just two large genera, and , all Neotropical Annonaceae have been revised within the last 25 years. Subsequent to these publications, many new specimens have been collected and sent to us in Leiden for identification.

A review of Möllendorff, 1890 and Möllendorff, 1890 in the Philippines (Gastropoda, Pupilloidea, Hypselostomatidae).

The genera and of the Philippines are revised based on the collections of the Senckenberg Forschungsinstitut und Naturmuseum (Frankfurt am Main, Germany), the Florida Museum of Natural History (USA), and recently collected material. Three new species are described: Páll-Gergely & Auffenberg, , Páll-Gergely & Schilthuizen, , Páll-Gergely & Schilthuizen,

Re-evaluation of von Frauenfeld, 1862 and Gittenberger, 1980, including the description of two new Iberian species using Computer Tomography (CT) (Eupulmonata, Ellobioidea, Carychiidae).

The present study aims to clarify the confused taxonomy of von Frauenfeld, 1862 and Gittenberger, 1980. Revision of Iberian micro snails is severely hindered by uncertainties regarding the identity of the oldest Iberian species, von Frauenfeld, 1862. In this paper, we clarify its taxonomic status by designating a lectotype from the original syntype series and by describing its internal and external shell morphology.

A morphometric analysis of , a Voltziales seed cone from the early Permian Jambi palaeoflora, Sumatra (Indonesia).

, a coniferophyte seed cone, is described from the Jambi Palaeoflora, Sumatra of Asselian (early Permian) age. A morphometric analysis based on cones, paired fertile units, and fertile and sterile scales, demonstrates their close relationship. Small paired fertile units occur mainly in cones.

Unravelling the moons: review of the genera and in the Indo-Pacific (Demospongiae, Tetractinellida, Tetillidae).

(Selenka, 1867) and (Carter, 1886) occur in a broad range of marine environments and are allegedly widely distributed species in the Indo-Pacific. We coin the term 'moon sponges' for these species as they are spherical in shape with numerous porocalices resembling the lunar surface. Both species have a complex taxonomic history with high synonymization, in particular by Burton (1934, 1959).

Rociene. & Stonis, an Asian leafminer on Siberian elm, now widespread in eastern North America (Lepidoptera, Nepticulidae).

Rocienė & Stonis, 2014, previously known from the single male holotype from Primorye, Russia, is reported as a new invasive species mining leaves of Siberian elm, L., in eastern North America. Both adults and leafmines have been reported from many sites as unidentified Nepticulidae since 2010.

On the molecular and morphological evolution of continental and insular species, with an additional description of (Talitridae).

Semi-terrestrial talitrid amphipods of the genus (sensu Lowry and Fanini 2013) associated with freshwater-soaked leaf litter were known to occur in inland lakes of Turkey and at the shores of the Black Sea. Before 2013 they had been reported as and later as . In our phylogenetic tree, inferred from a mitochondrial and nuclear gene dataset (cytochrome oxidase I (COI), and histone H3 (H3), respectively), we show that these Turkish populations belong to , a common and widespread continental species, which is closely related to (endemic to Cyprus) and (endemic to Rhodes).