Metanigrus spinatus Lv, Chen & Bourgoin, 2021

Lv, Sha-Sha, Bourgoin, Thierry, Yang, Lin & Chen, Xiang-Sheng, 2021, Four new species of the planthopper genus Metanigrus Tsaur, Yang & Wilson from China (Hemiptera, Fulgoromorpha, Meenoplidae), ZooKeys 1024, pp. 197-213 : 197

publication ID	https://dx.doi.org/10.3897/zookeys.1024.62226
publication LSID	lsid:zoobank.org:pub:DF1FE763-851D-4C8F-8986-6D75FEBA5CE9
persistent identifier	https://treatment.plazi.org/id/BF15FE85-4D07-4789-B214-C2A663A21883
taxon LSID	lsid:zoobank.org:act:BF15FE85-4D07-4789-B214-C2A663A21883
treatment provided by	ZooKeys by Pensoft
scientific name	Metanigrus spinatus Lv, Chen & Bourgoin
status	sp. nov.

Treatment

Metanigrus spinatus Lv, Chen & Bourgoin View in CoL sp. nov. Figs 7 View Figures 1–8 , 8 View Figures 1–8 , 42-52 View Figures 42–52

Metanigrus yami Liu & Qin 2020: 27-29 (misidentification)

Measurements.

Total length: male 3.01-3.52 mm (N = 18), female 3.68-4.13 mm (N = 15).

Diagnosis.

The salient features of the new species include: frons (Fig. 43 View Figures 42–52 ) with a big, longitudinal and black brown marking in middle; middle part of anal tube (Figs 46 View Figures 42–52 , 49 View Figures 42–52 ) with a finger-like process, a protrusion on the basolateral finger-like process; inner margin of outer gonostyli (Figs 46 View Figures 42–52 , 49 View Figures 42–52 ) strongly protruding, outer margin gentle, bifurcated unequally in lateral view.

Coloration.

General color fuscous (Figs 7 View Figures 1–8 , 8 View Figures 1–8 ). Vertex and pronotum yellowish white. Eyes reddish black. Frons yellowish white, with a big, longitudinal, black-brown marking in middle, reaching apex of frons. Mesonotum ocherous. Legs yellowish brown. Tegmina semitransparent, veins light yellow. Wings hyaline. Abdomen brown.

Head and thorax.

Head (Figs 7 View Figures 1–8 , 42 View Figures 42–52 ) significantly narrower than pronotum, without median carina. Vertex (Fig. 42 View Figures 42–52 ) shorter in middle line than wide basally (1: 1.84), with two posterolateral areolets at base not meeting medially. Frons (Fig. 43 View Figures 42–52 ) subrectangular, without median carina, longer in middle line than wide at widest portion (about 1.86: 1), lateral carinae with a dense row of sensory pits along outer margin. Postclypeus (Fig. 43 View Figures 42–52 ) with distinct median and lateral carinae. Frontoclypeal suture nearly straight. Rostrum elongate, in repose well surpassing hind-coxae. Pronotum (Fig. 42 View Figures 42–52 ) wider than maximum width of head (including eyes) (1.35: 1), with median carina and sinuate lateral carinae. Mesonotum (Fig. 42 View Figures 42–52 ) about 5.62 times longer than pronotum in midline, with distinct median carina. Tegmina (Fig. 44 View Figures 42–52 ) slender, longer than maximal width (2.45: 1), almost as wide at postnodal as prenodal area, veins ScP + R + MP with several sensory pits, MP 3 two branched; five postnodal closed cells with C1 smaller than C2, C5 placed next to C3, C4 distally displaced after the nodal line, im, r-m and anterior two-thirds of margin with white areas. Hind wing (Fig. 45 View Figures 42–52 ) with lateral margin notched at CuA1, CuP, and A2, more strongly at A1; A2 not reaching posterior margin. Metatibiotarsal formula: (3+5)-6-5.

Male genitalia.

Pygofer (Figs 46 View Figures 42–52 , 47 View Figures 42–52 , 49 View Figures 42–52 , 50 View Figures 42–52 ) symmetrical, gradually narrowed towards apex, with sinuate anterior and posterior margins. Pygopher with internal sulcus and slightly curved lateral margins in ventral view. Anal tube (Figs 46 View Figures 42–52 , 49 View Figures 42–52 ) in lateral view, hand-shaped, anal style long, lateral lobes distally shorter than anal style, middle part with a finger-like process, a protrusion on the basolateral finger-like process. Aedeagus (Figs 46 View Figures 42–52 , 48 View Figures 42–52 , 49 View Figures 42–52 , 52 View Figures 42–52 ) acuminate apically, with tubular periandrium, lateral lobes swelling on both sides, surface beset with scale-like productions, ventral lobe slender with acute apex, dorsal lobe with a little finger-like process; in ventral view, base wider. Gonostyli (Figs 46 View Figures 42–52 , 47 View Figures 42–52 , 49-51 View Figures 42–52 ) divided into two parts, inner process curved apically, tapering into a process; in lateral view, inner margin of outer process strongly protruding, outer margin gentle, bifurcated unequally; in ventral view, divergent, outer process hammer-shaped.

Type material.

Holotype: ♂, China: Menglun , Yunnan Province (21°93'N, 101°26'E), 21 June 2019, Feng-E Li; Paratypes : 17♂♂ 15♀♀, Menglun , Yunnan Province, 22 June 2019, Feng-E Li, Yan Zhi and Nian Gong .

Etymology.

The species name is derived from the Latin adjective " Metanigrus spinatus ", referring to the middle part of anal tube with a finger-like process.

Remarks.

This species is similar to Metanigrus chromus but differs from the latter in: (1) frons with a big, longitudinal and black brown marking in middle (frons with two brownish-black patches on both sides in M. chromus ); (2) middle part of anal tube with a finger-like process (middle part of anal tube without a finger-like process in M. chromus ); (3) outer process of gonostyli bifurcated unequally at apex in lateral view (outer process of gonostyli bifurcated nearly equal at apex in lateral view in M. chromus ).

Distribution.

China (Yunnan) (Fig. 61 View Figure 61 ).