Generic changes in United States Issini (Hemiptera, Fulgoroidea, Issidae)

Three new genera of the family Issidae are described for species formerly included in the genus Hysteropterum sensu lato: Balduza Gnezdilov and O’Brien, gen. n. (type species: Hysteropterum unum Ball 1910), Stilbometopius Gnezdilov and O’Brien, gen. n. (type species: Issus auroreus Uhler 1876), Abolloptera Gnezdilov and O’Brien, gen. n. (type species: Hysteropterum bistriatum Caldwell 1945),. The genus Tylanira Ball 1936 is redescribed. The male genitalia of Tylanira bifurca Ball 1936 is described and illustrated. Tylana ustulata Uhler 1876 is transfered to Tylanira. Hysteropterum bufo Van Duzee 1923 is transfered to Balduza gen. n. and the male genitalia of the species is described and illustrated. The subgenus Paralixes Caldwell 1945 of the genus Ulixes Stål 1861 is raised to genus – Paralixes Caldwell 1945, stat. n. A key to the issid genera of the United States is given. New data on the distribution of 7 species are given

First coloured species of the genus Thabena Stål (Hemiptera, Fulgoroidea, Issidae) from Vietnam with general notes on the genus

A new species of the genus Thabena Stål, 1866 is described from Dalat in Vietnam. Checklist of Thabena species is given. This is the first species of the genus with multicoloured metope which may be treated as a kind of mimicry to salticid spiders. Taxonomic position of the genus Thabena within the family Issidae and its close relationships to the tribe Parahiraciini is briefly discussed

New genus and species of the tribe Parahiraciini (Hemiptera, Fulgoroidea, Issidae) from the Philippines and Vietnam

Nisoprincessa gen. n. is described for Nisoprincessa palawana sp. n. from Palawan Island of the Philippines. This represents the first record of the tribe Parahiraciini in the Philippines. Nisoprincessa palawana sp. n. is treated as two subspecies according to the length of metopial proboscis – N. palawana palawana ssp. n. and N. palawana bacuita ssp. n. Furthermore, Brevicopius gorochovi sp. n. is described from Vietnam which is the first record of the genus Brevicopius Meng, Qin et Wang, 2015 in the country

Reinhardema nov. gen., a new genus of the family Caliscelidae from Iran: (Hemiptera: Fulgoroidea)

Die neue Gattung Reinhardema gen. nov. wird für Homocnemia pasagarda Dlabola, 1982 errichtet.A new genus Reinhardema gen. nov. is erected for Homocnemia pasagarda Dlabola, 1982

On the 70th birthday of Prof. G.A. Anufriev

Vita and scientific career of Prof. Georgy Aleksandrovich Anufriev on occasion of his 70th birhtday with a list of his publications

Review of the genus Pseudocoruncanius Meng, Qin et Wang, 2020 (Hemiptera: Fulgoromorpha: Issidae), with the description of a new species from Vietnam

Pseudocoruncanius Meng, Qin et Wang, 2020 (in Zhang et al. 2020) is placed in the tribe Sarimini and reviewed with its relationships discussed. Pseudocoruncanius nigrifrons sp. n. is described from Tam Dao forest in northern Vietnam, which is the first record of the genus from mainland Asia. A key to species of the genus Pseudocoruncanius is given

New taxa and combinations in Neotropical Issidae (Hemiptera: Fulgoroidea)

Six new genera are erected as follows: in the Issini, Argepara gen. n. (type species: Hysteropterum semipellucidum Melichar, 1906), Aztecus gen. n. (type species: Hysteropterum montezuma Kirkaldy, 1913), Incasa gen. n. (type species: Hysteropterum riobambae Schmidt, 1910), Bumaya gen. n. (type species: Bumaya knorozovi sp. n.); and in the Colpopterini, Caudibeccus, gen. n. (type species: Colpoptera carlota Myers, 1928) and Jamaha gen. n. (type species: Poeciloptera elevans Walker, 1858). Four new generic synomymies are proposed: Prothona Caldwell, 1945 and Plummerana Caldwell, 1945 are placed in synonymy under Proteinissus Fowler, 1904. Thionissa Metcalf, 1938 is placed in synonymy under Dracela Signoret, 1861. Hesperophara Kirkaldy, 1904 is placed in synonymy under Colpoptera Burmeister, 1835. Twenty-three new combinations resulting from generic synonymies or transfer of species into new genera are: Argepara lyra (Berg, 1883), Argepara semipellucida (Melichar, 1906), Aztecus auroriferus (Caldwell, 1945), Aztecus erratus (Caldwell, 1945), Aztecus mexicanus (Kirkaldy, 1909), Aztecus montezuma (Kirkaldy, 1913), Aztecus sierrae (Fowler, 1904), Aztecus viridatus (Caldwell, 1945), Caudibeccus carlota (Myers, 1928), Caudibeccus lucaris (Fennah, 1955), Caudibeccus meleagris (Fennah, 1955), Caudibeccus punctatus (Metcalf, 1954), Colpoptera rustica (Fabricius, 1803), Dracela acuta (Metcalf, 1938), Incasa riobambae (Schmidt, 1910), Jamaha chrysops (Fennah, 1955), Jamaha elevans (Walker 1858), Paralixes fowleri (Melichar, 1906), Proteinissus isolatus (Caldwell, 1945), Proteinissus pentagonatus (Caldwell, 1945), Proteinissus punctatus (Caldwell, 1945), Proteinissus reticulatus (Caldwell, 1945), Proteinissus viridus (Caldwell, 1945). Three new species are described: Bumaya knorozovi sp. n. from Belize and Mexico, Traxus kasparyani sp. n. from Mexico, and Caudibeccus emeljanovi sp. n. from Cuba. The description of T. kasparyani represents the first Mexican country record for the genus Traxus Metcalf. The species Hysteropterum acanthum Caldwell, 1945 is placed in synonymy under Aztecus montezuma (Kirkaldy, 1913). Colpoptera sinuata Burmeister, 1835 is redescribed. New country records are presented for A. semipellucida from Argentina, A. lyra from Paraguay and Uruguay, D. acuta from Ecuador, and D. annulipes Signoret, 1861 from Brazil, Peru, and Ecuador. Keys to the species of the genera Aztecus gen. n., Argepara gen. n., Traxus Metcalf, and Dracela Signoret are given. An ant association is recorded for the first time for A. lyra

Investigation of the oxohalogenide Cu4Te5O12Cl4 with weakly coupled Cu(II) tetrahedra

The crystal structure of the copper(II) tellurium(IV) oxochloride Cu$_{4}$Te$_{5}$O$_{12}$Cl$_{4}$ (Cu-45124) is composed of weakly coupled tetrahedral Cu clusters and shows crystallographic similarities with the intensively investigated compound Cu$_{2}$Te$_{2}$O$_{5}$X$_{2}$, with X~=~Cl, Br (Cu-2252). It differs from the latter by a larger separation of the tetrahedra within the crystallographic ab plane, that allows a more direct assignment of important inter-tetrahedra exchange paths and the existence of an inversion center. Magnetic susceptibility and specific heat evidence antiferromagnetic, frustrated correlations of the Cu spin moments and long range ordering with $T_{c}$=13.6 K. The entropy related to the transition is reduced due to quantum fluctuations. In Raman scattering a well structured low energy magnetic excitation is observed at energies of $\approx$50K (35cm$^{-1})$. This energy scale is reduced as compared to Cu-2252.Comment: 11 pages, 9 figures, further information see http://www.peter-lemmens.d