Diomma (Diomma) pincersa Song, Li & Xiong

Song, Yuehua, Li, Zizhong & Xiong, Jing, 2011, A new species of the leafhopper genus Diomma Motschulsky (Hemiptera, Cidadellidae, Typhlocybinae) from China, ZooKeys 83, pp. 57-62 : 58-59

Diomma (Diomma) pincersa Song, Li & Xiong sp. n. Figures 1-10

Description.

Head (Fig. 1) width about equal in length to greast width of pronotum. Vertex (Fig. 1) yellow, with a large median apical spot, orange red and with four irregular spots: one pair near posterior margin of crown light brown; other pair smaller, blackish brwon. Eyes (Figs 1, 2) greyish black. Face (Fig. 2) brownish black, with a orange red spot at its upper part. Anteclypeus quite large and broad, little expanded, nearly pentagonal. Pronotum (Fig. 1) with large irregular nut-brown stripes. Scutellum (Fig. 1) small, triangular; basal triangles blackish brown, a longitudinal dark stripe extended from base to apex. Forewing wax field orange yellow, with several irregular markings as in Fig. 3.

Abdominal apodemes (Fig. 4) extended to posterior margin of 4th sternite.

Pygofer lobe (Fig. 5) broad, with few of long macrosetae on lateral surface. Pygofer dorsal appendage immovably fused to margin, its terminal part bifurcate. Subgenital plate (Fig. 6) long, much protruding beyond pygofer lobe, with four basal macrosetae and numerous short rigid setae along upper margin. Style (Fig. 7) broad in middle, long and slender at apical portion, with four sensory pits not far from preapical lobe. Preapical lobe small, but prominent. Aedeagal shaft (Figs 8, 9) curved ventrally, with serrated lateral margin in median; shaft elongated. Preatrium with a large process, its length about as long as that of dorsal apodeme. Gonopore subapical, ventrad. Connective (Fig. 10) Y-shaped, two lateral arms very long, which more than two times of connective stem length; central lobe small, quite vestigial.

Measurement.

Body length males 2.8 mm.

Type material.

Holotype, male, China: Guizhou Province, Qianxi County, 15~17 October 2007, coll. QIONG-ZHANG SONG. Paratype: one male, same date as holotype.

Remarks.

The new species can be distinguished from other species of the genus by its unique aedeagus’s structure (Figs 8, 9).

Etymology.

The specific name is derived from the Latin word “pincersa” (claw, clamp), which refers to the pygofer dorsal appendage with terminal part branched or bifurcate (Fig. 5).