Gelastyrella Yang, 1994

Constant, Jérôme & Pham, Hong Thai, 2024, Issid planthoppers from Bach Ma and Phong Dien in Central Vietnam. I. Tribe Parahiraciini (Hemiptera: Fulgoromorpha: Issidae), European Journal of Taxonomy 975, pp. 1-64 : 36

Genus Gelastyrella Yang, 1994

Gelastyrella Yang, 1994 in Chan & Yang, 1994: 90. Type species: Gelastyrella litaoensis Yang, 1994 , by original designation.

Diagnosis

The genus Gelastyrella can be differentiated from the other genera of Parahiraciina by the following combination of characters (based on Zhang et al. 2020):

(1) the frons about as long a wide, with median carina and a transverse carina under the dorsal margin;

(2) the tegmina tapering towards apex, with vein ScP+R forked near base, MP 3-branched with first fork around midlength and CuA unforked;

(3) the tri-lobed hind wings (with A2 lobe reduced);

(4) the first metatarsomere with a dense pad of spines ventrally, in addition to spines of the apical margin;

(5) the ventral lobe of the periandrium strongly expanded basiventrad in rounded lobes;

(6) the aedeagus with one pair of lateroventral processes and well developed suspensorium.

Species included (distribution)

Gelastyrella litaoensis Yang, 1994 ( China (Hainan, Fujian, Guangxi); Taiwan; Vietnam – Chan & Yang 1994; Gnezdilov et al. 2014a; Gnezdilov 2015).