The Agromyzidae of Malta is reviewed and all 81 species are listed with additional data. Three genera are reported for the first time: Japanagromyza Sasakawa, Aulagromyza Enderlein and Phytoliriomyza Hendel. Two species in the genus Aulagromyza Enderlein and one in Phytomyza Fallen cannot be named at present. The commonest species on the islands, the pest species and 37 new records are indicated. The phenology of the species belonging to this family as applies to the Maltese Islands is tabulated and discussed.

The population structure of Crematogaster subdentata Mayr, 1877 in the primary (native) (Uzbekistan) and secondary ranges (Crimea, Rostov-on-Don) is analyzed. The data obtained indicate an uncommon behavior for invasive ants – the formation of supercolonies in the primary range (the size of the foraging area is about 600 m2) in the urban territory. Nesting in houses and in trunks of old trees occurs both in the zone of invasion and in the primary range. The data of the distribution of the second invasive species in the same regions – Lasius neglectus Van Loon et al., 1990 are provided. Comparison of the population structure (ratio of the mono- and polycalic colonies, presence of the supercolonies and their sizes), parameters of the colonies (average number of the nests and forage trees per colony) showed the ad- vantage of Crematogaster subdentata over Lasius neglectus, which is gradually crowded out by the first species in the places of contact.

Bosmans, Robert, Trotta, Alessio (2021): On two rare Italian Palliduphantes, including the description of a new species (Araneae: Linyphiidae). Fragmenta entomologica 53 (1): 9-12, DOI: 10.13133/2284-4880/454, URL: http://dx.doi.org/10.13133/2284-4880/454

The first record of the bush-cricket Tettigonia viridissima Linnaeus, 1758 Orthoptera: Tettigoniidae) as host of the tachinid Therobia leonidei Mesnil, 1964 (Diptera: Tachinidae) is reported, and the unusual case of the parasitization of a female host is briefly discussed.

We provide the first records of the Oak bush-cricket Meconema thalassinum on the three German North Sea geest islands Amrum, Fohr and Sylt, based on monitoring and citizen science. The presence of the Oak bush-cricket on these German islands is probably due to unintentional introduction.

The larvae of Ascalaphus dicax are redescribed based on specimens reared under laboratory conditions. The third instar larva of this species resembles in overall morphology the congener A. festivus, though differing in body pattern and arrangement of thoracic and abdominal setiferous processes.

Giuliano, Davide (2021): Calliptamus italicus at 3050 m: a first evidence of dispersal across the Alps? (Orthoptera: Acrididae). Fragmenta entomologica 53 (1): 75-80, DOI: 10.13133/2284-4880/452, URL: http://dx.doi.org/10.13133/2284-4880/452

Schifani, Enrico, Costa, Simone, Mei, Maurizio, Alicata, Antonio (2021): A new species for the Italian fauna: Aphaenogaster strioloides, not A. crocea, inhabits Pantelleria Island (Hymenoptera: Formicidae). Fragmenta entomologica 53 (1): 21-24, DOI: 10.13133/2284-4880/482, URL: http://dx.doi.org/10.13133/2284-4880/482

Viggiani, Gennaro, Filella, Francesco, Bernardo, Umberto (2021): The egg endoparasitoids of Macrolenes dentipes (Olivier) (Coleoptera: Chrysomelidae), with description of a new species of Aprostocetus Westwood and notes on its host (Hymenoptera: Eulophidae). Fragmenta entomologica 53 (1): 57-64, DOI: 10.13133/2284-4880/483

Lethocerus patruelis (Stal, 1854) is the only European member of the Belostomatidae family. During the last decades Lethocerus patruelis records have become frequent in south-eastern Italy, probably due to multiple accidental introductions or a natural westward spread of its range. The first records of Lethocerus cfr. patruelis for the Calabria region are here reported. The first individual was observed alive and photographed in Villapiana (Cosenza province), while the second one was found and collected in Prunella (Melito di Porto Salvo municipality, Reggio Calabria province). The status of Lethocerus patruelis in this region and in Italy as introduced or naturally spreading species is yet to be assessed.