Gergithoides Schumacher, 1915

Constant, Jérôme & Pham, Hong Thai, 2024, Sixteen issid planthopper species in one day in Dong Son-Ky Thuong Nature Reserve in North Vietnam: Eight new species, one new genus and additional new records (Hemiptera: Fulgoromorpha: Issidae), European Journal of Taxonomy 919 (1), pp. 1-87 : 6-7

Genus Gergithoides Schumacher, 1915

Gergithoides Schumacher, 1915: 126 .

Type species: Gergithoides carinatifrons Schumacher, 1915 by monotypy.

Daruma Matsumura, 1916: 103 (preoccupied). Type species: Daruma nitobei Matsumura, 1916 , by original designation. Synonymized by Ishihara (1965: 208) under the erroneous spelling “ Darma ”.

Darumara Metcalf, 1952: 227 . New name for Daruma Matsumura, 1916 . Synonymized by Gnezdilov (2009: 85) [already synonymized by Ishihara (1965)].

Darma Ishihara, 1965: 208 . Misspelling of Daruma .

Diagnosis

The definition of the genus extrapolated from the key to the genera of Hemisphaeriini provided by Sun et al. (2012) features the following distinctive set of characters:

(1) the hind wing longer than half length of tegmen;

(2) the frons with a complete median carina;

(3) the lateral margins of the frons not elevated;

(4) a row of tubercles along the lateral margins of the frons.

At species level, the shape of the bi- or trispinose lateral process of the periandrium provides very stable and reliable characters.

The Vietnamese species of Gergithoides were treated in Constant & Pham (2017).

Species included

Gergithoides carinatifrons Schumacher, 1915

Gergithoides caudospinosus Chen, Zhang & Chang, 2014

Gergithoides gibbosus Chou & Wang, 2003

Gergithoides gnezdilovi Constant & Pham, 2017

Gergithoides jejudoensis Rahman, Kwon & Suh, 2012

Gergithoides nui Constant & Pham, 2017

Gergithoides olivaceus sp. nov.

Gergithoides rugulosus ( Melichar, 1906)

Gergithoides undulatus Wang & Che, 2003

Note

The species of Gergithoides should be identified based on the comparison of the male terminalia with reliable illustrations. The pending issues in the identity of some species of Gergithoides , especially in the fauna of China, were explained in detail by Constant & Pham (2017) but not addressed in Zhang et al. (2020).