Agnesiella (D.) tridigitata Huang & Zhang, 1970

Wang, Junjie, Zhang, Yalin & Huang, Min, 2022, Taxonomic study of the leafhopper genus Agnesiella Dworakowska (Hemiptera Cicadellidae: Typhlocybinae) from China, with descriptions of 13 new species, Zootaxa 5094 (2), pp. 201-233 : 228

Agnesiella (D.) tridigitata Huang & Zhang sp. nov.

( Figs 49, 52, 55, 58 , 157–165 )

Measurement. Male, 3.25 mm (including wings).

Body infuscate ( Figs 49, 52 ). Most parts of face black-brown with outer margins of gena ivory ( Fig. 58 ). Pronotum with 7 patches black-brown. Scutellum yellow ochre with triangles dark brown and 2 small brown patches at central area ( Fig. 55 ). Forewing with basal half covered with smoky infuscate patches and claval apex brown; brochosome field testaceous ( Figs 49, 52 , 157 ).

Abdominal apodemes reaching end of 5th abdominal sternite ( Fig. 158 ). Male pygofer side with rigid microsetae band closer to posterior margin than fine setae band on middle part; a sclerotized band near posterior margin and a trifurcate digitiform appendage arising from posteroventral margin ( Fig. 159 ). Subgenital plate with outer margin sclerotized except at end ( Figs 161, 162 ). Paramere with subapical protrusion small ( Figs 161, 163 ). Connective with stem longer than lateral arms and central lobe absent ( Fig. 161 ). Aedeagal shaft straight with apex extended ventrally and ventral margin undulate subapically, ventral appendage with 2 digitiform branches respectively directed upwards and downwards in lateral view ( Figs 164, 165 ).

Specimens examined. Holotype: ♂, CHINA, Yunnan Province, Xinzhu , 2250m, Alnus nepalensis , 15-XI-1999, coll. I. Dworakowska. Paratype: 2♂ 1♀, same data as holotype ; 1♂, CHINA, Yunnan Province, Jinping , 1600m, 11- V-1956, coll. Keren Huang ; 2♀, CHINA, Yunnan Province, Xinzhu , 2300m, Alnus nepalensis , 16-XI-1999, coll. I. Dworakowska.

Etymology. The specific name is derived from Latin compound word “tridigitatus, referring to the trifurcate pygofer appendage ( Fig. 160 ).

Notes. The new species resembles Agnesiella (Draberiella) fatima , but differs in the male pygofer side with a trifurcate appendage ( Fig. 160 ), in the aedeagal shaft with an undulate ventral margin subapically and in ventral appendage with only 2 digitiform branches forming an arch in lateral view ( Fig. 164 ).

Figures

FIGURES 49–60. Habitus (dorsal view and lateral view), crown, pronotum and scutellum (dorsal view), and face. 49, 52, 55, 58, A. (D.) tridigitata Huang & Zhang sp. nov.; 50, 53, 56, 59, A. (D.) lata Huang & Zhang sp. nov.; 51, 54, 57, 60, A. (D.) stipitata Huang & Zhang sp. nov. Scale bars = 1 mm (49–54); Scale bars = 0.2 mm (55–60).

FIGURES 157–165. A. (D.) tridigitata Huang & Zhang sp. nov. 157. forewing; 158. abdominal apodemes; 159. male pygofer side, lateral view; 160. hind part of male pygofer side, lateral view; 161. paramere, connective, subgenital plate and sternite IX, dorsal view; 162. end of subgenital plate, dorsal view; 163. caudal end of paramere, dorsal view; 164. aedeagus, lateral view; 165. aedeagus, posterior view.