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 ).