Agnesiella (D.) exigua Huang & Zhang, 2022

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 : 222-225

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

( Figs 34, 38, 42, 46 , 137–142 )

Measurement. Male, 3.81 mm (including wings).

Body infuscate ( Figs 34, 38 ). Face with brown transverse streaks on brownish frontoclypeal area, lorum brownish, anteclypeus and upper parts of gena black-brown ( Fig. 46 ). Vertex testaceous near coronal suture. Pronotum with 7 patches black-brown and remaining most parts suffused with reddish. Most of scutellum red ochre with triangles dark brown; central area light yellow ochre with 2 small dark brown patches ( Fig. 42 ). Forewing with 2 broad brownish bands, one at base and other at central part of basal half, most of remaining parts covered with smoky infuscate pattern; brochosome field reddish ( Figs 34, 38 , 137 ).

Abdominal apodemes reaching center of 5th abdominal sternite. Male pygofer side with 2 bands of setae longitudinally near ventral margin; posterior margin with a few scattered rigid microsetae near upper part, and a short horn-like appendage on central part ( Fig. 138 ). Subgenital plate subapically with a small protrusion bearing 3 peglike setae apically ( Fig. 139 ). Paramere without subapical protrusion ( Fig. 140 ). Aedeagal shaft straight with an arched lamellar ventral extension terminally, and a ventral appendage near base bearing 2 long digitiform branches directed upwards ( Figs 141, 142 ).

Specimens examined. Holotype: ♂, CHINA, Sichuan Province, Moxi , 1600m, Alnus nepalensis , 5-XI-1999, coll. I. Dworakowska. Paratype: 1♂, same data as holotype .

Etymology. The specific name is derived from Latin word “exiguus which means “weak, referring to its underdeveloped paramere and aedeagus ( Figs 140, 141 ).

Notes. The new species resembles Agnesiella (Draberiella) olena , but differs in the male paramere without a subapical protrusion ( Fig. 140 ), and in aedeagal shaft with ventral appendage shorter and upper branch of ventral appendage longer than lower one ( Figs 141, 142 ).

Figures

FIGURES 33–48. Habitus (dorsal view and lateral view), crown, pronotum and scutellum (dorsal view), and face. 33, 37, 41, 45, A. (D.) glabra Huang & Zhang sp. nov.; 34, 38, 42, 46, A. (D.) exigua Huang & Zhang sp. nov.; 35, 39, 43, 47, A. (D.) mitrata Huang & Zhang sp. nov.; 36, 40, 44, 48, A. (D.) apiculata Huang & Zhang sp. nov. Scale bars = 1 mm (33–40); Scale bars = 0.2 mm (41–48).

FIGURES 137–142. A. (D.) exigua Huang & Zhang sp. nov. 137. forewing; 138. male pygofer side, lateral view; 139. end of subgenital plate, dorsal view; 140. paramere, dorsal view; 141. aedeagus, lateral view; 142. aedeagus, posterior view.