Pisachini planthoppers of Vietnam: new records of and a new species from Central Vietnam (Hemiptera, Fulgoromorpha, Nogodinidae).

Two planthopper species of the family Nogodinidae are added to the fauna of Vietnam, both from two localities in Thua Thien-Hue Province: Bach Ma National Park and Phong Dien District. The first species belongs to Meng, Wang & Wang, 2014, Constant & Pham, , and the second belongs to Distant, 1906, Meng, Wang & Wang, 2014. was previously recorded from Hainan Island, China.

Review of Holophris Mocsáry/ (Hymenoptera: Chrysididae) from Vietnam, with description of a new species.

The genus Holophris Mocsáry, 1890 of the tribe Elampini (Chrysidinae) is reviewed in Vietnam for the first time. A new species, H. melinh Nguyen Wiśniowski, sp.

Contribution to the taxonomy of the paper wasp genus Polistes (Polistella) (Hymenoptera: Vespidae: Polistinae) from Vietnam, with description of a new species.

One species of the genus Polistes, Polistes (Polistella) caobangensis Nguyen, sp. nov. is described from the northern part of Vietnam.

Taxonomic study on the genus Pseudozumia de Saussure (Hymenoptera: Vespidae: Eumeninae) from Vietnam, with description of a new species.

A taxonomic study on the genus Pseudozumia de Saussure from Vietnam is presented. One species previously identified as Pseudozumia indica indica (de Saussure, 1855) is described as new, namely P. cucphuongensis Nguyen, sp.

Taxonomic notes on the genus Pseumenes Giordani Soika, 1935 (Hymenoptera: Vespidae: Eumeninae) from Vietnam with key to all known species in the Oriental region.

There are two species of the genus Pseumenes Giordani Soika, 1935 occurring in Vietnam, Pseumenes depressus depressus (de Saussure, 1855) and a new species, Pseumenes fulvus Nguyen. The new species is described and figured. A key to all known species of this genus from the Oriental region is provided.

Taxonomic review and distribution of the genus Vespula Thomson, 1869 (Hymenoptera: Vespidae: Vespinae) from Vietnam.

A taxonomic review of the genus Vespula Thomson in Vietnam is reported. Three species are recorded: V. flaviceps (Smith, 1870), V.

First record of the cicadas genus Orientopsaltria Kato, 1944 (Hemiptera: Cicadidae) from Vietnam, with description of one new species.

A new species of cicada, Orientopsaltria dongnaiensis sp. nov., (Hemiptera: Cicadidae) is described from southern Vietnam.

A new species of the emesine assassin bug genus Emesopsis (Hemiptera: Heteroptera: Reduviidae) from Vietnam.

Emesopsis konchurangensis sp. nov. (Hemiptera: Heteroptera: Reduviidae: Emesinae: Ploiariolini) is described from central Vietnam as the fourth species of the genus in this country.

A new species and first record of the cicada genus Sinotympana Lee, 2009 (Hemiptera: Cicadidae: Dundubiini) from Vietnam.

The first record of the genus Sinotympana Lee, 2009 from Vietnam is presented. Sinotympana caobangensis sp. nov.

A new record of the genus Orientalicesa Koçak Kemal, 2010 (Hymenoptera: Vespidae: Eumeninae) from Vietnam.

The genus Orientalicesa has six species, and all of them have been recorded in the Oriental region (including Indonesia, Malaysia, Phillippines, Laos, China). In this paper, the genus Orientalicesa is newly recorded from Vietnam, represented by one species O. confasciatus Tan and Carpenter.

Contribution to the genus Okinawepipona Yamane (Hymenoptera: Vespidae: Eumeninae) from Vietnam, with description of a new species.

A new species of the genus Okinawepipona Yamane from Vietnam is described and figured: Okinawepipona yty Nguyen, sp. nov. (northern Vietnam).