Nigrimacula quadrinotata ( Bey-Bienko, 1971 ) Bey-Bienko, 1971

Shi, Fuming, Bian, Xun & Zhou, Zhijun, 2016, Comments on the status of Xiphidiopsis quadrinotata Bey-Bienko, 1971 and related species with one new genus and species (Orthoptera: Tettigoniidae: Meconematinae), Zootaxa 4105 (4), pp. 353-367 : 359-363

Nigrimacula quadrinotata ( Bey-Bienko, 1971) com. nov.

( Figs. 4 – 5 , 8 E–F; Map 1 )

Xiphidiopsis quadrinotata Bey-Bienko, 1971 . Entomological Review, 50: 475. Meconemopsis quadrinotata Wang et al., 2015 . Zootaxa, 3941(4): 523.

Location of type specimen: British Natural History Museum, London, UK.

Specimens examined. Holotype: female, Nam Tamal Valley, Upper Burma, Myanmar, 24 July, 1938, coll. by R. Kaulback. Other specimens: 2 males, Bangda, Ruili, Yunnan, China, 8 September, 2015, coll. by Yutang Wang; 1 male, Ruili, Yunnan, China, 20 September, 2015, coll. by Yutang Wang; 1 female, Mangdong, Lianghe, Yunnan, China, 20 September, 2015, coll. by Yutang Wang.

Description. Male. Head. Fastigium verticis conical, dorsal surface with a median sulcus ( Fig. 4 A). Eyes nearly global, protruding forwards. Apical segment of maxillary palpi slightly longer than subapical one, apex inflated.

Thorax. Pronotum with anterior margin almost straight, posterior margin narrowly rounded ( Fig. 4 A); lateral lobe longer than high, ventral margin undulating, posterior margin with distinct humeral sinus ( Fig. 4 B).

Legs. All femora unarmed on ventral surface. Procoxae with a short spine. Pro- and mesotibiae with 4 pairs of minute spines and 1 pair of apical spines on ventral surface. Posttibiae with 20–22 inner and 19–21 outer spines on dorsal surface, ventral surface with 4–8 minute outer spines, apices with 1 pair of dorsal spurs and 2 pairs of ventral spurs.

Wings. Tegmina reaching apices of posttibiae; hind wings slightly longer than tegmina.

Abdomen. Posterior margin of tenth abdominal tergite arched concave ( Fig. 4 C, D). Cerci stout, apical area concave forwards, forming a deep cavity ( Fig. 4 F); dorsal margin of apical area with 1 lamellar process, its apex with 9 teeth forming 2 groups ( Fig. 4 F–H); 1 cylindrical process connecting the lamellar process with 7 apical teeth ( Fig. 4 G); internal margin with 1 spatulate process, its apex with 15 teeth ( Fig. 4 E); the ventral margin of the spatulate process followling an olique, lamellar lobe with 7 apical teeth ( Fig. 4 F). Subgenital plate longer than broad, hexagonal, basal margin almost straight, lateral margins of basal half parallel, apical half slightly narrowing, posterior margin almost straight; styli short and stout conical, located on apices of lateral margins ( Fig. 4 H).

Coloration. Body yellowish green (probably light green when alive). Eyes brown. Fastigium verticis black brown, occiput with 1 longitudinal light brown stripe in the middle, which extending to pronotal disc, metazona lighter than other area; the lateral margins of the median stripe with 1 yellow stripe separately; centre of posterior margin brown ( Fig. 4 A, I).

Measurements (mm). BL: ♂ 9.495–10.562, ♀ 10.932; PL: ♂ 3.338–3.487, ♀ 3.013; PFL: ♂ 7.715–7.958, ♀ 7.925; TL: ♂ 16.147–17.070, ♀ 17.121; Ov: 8.716.

Distribution. China (Yunnan); Burma ( Myanmar).

Remarks. The original description of the species is based on a single female specimen. Except for Myanmar, the distribution record of the species was once expanded to Sichuan and Xizang ( Jin & Xia, 1994; Liu & Jin, 1994). Wang et al. (2015) recorded that the specimens from Xizang (examined specimens in their study is “5 ♀, Motuo County, Xizang province, alt. 970–1570 m, 1979. IX.10–1980. VIII.14, leg. JIN Gen-Tao & WU Jian-Yi; 2 ♀, Motuo County, Xizang province, alt. 1000 m, 2010. VIII. 6–8, leg. BI Wen-Xuan; 1 ♂ 2 ♀, Beibeng Village, Motuo County, Xizang province, alt. 850–1200 m, 1983. IV.9–V. 18, leg. HAN Yin-Heng.”) are members of Xiphidiopsis quadrinotata , and the specimen (examined specimen in their study is “1 ♀, Erlang Mountain, Tianquan County, Sichuan province, alt. 900 m, 2010. IX.5, leg. BI Wen-Xuan”) from Sichuan belongs to Meconemopsis paraquadrinotata Wang, Liu & Li, 2015 . After our study, we deem that the specimens from Mêdog, Xizang should be identified as Nigrimacula xizangensis ( Jiao & Shi, 2013) , as deforming the specimen from Sichuan is not succesfully identified, and Nigrimacula quadrinotata ( Bey-Bienko, 1971) lives only in Yunnan Province in China.

Figures

MAP 1. Known distribution of the genus Nigrimacula gen. nov.

FIGURE 4. Nigrimacula quadrinotata (Bey-Bienko, 1971) com. nov.: A – B, I – J. head and pronotum: A, I. dorsal view; B, J. lateral view; C – G, K. apex of abdomen: C. dorsal view, D. dorsal and slightly apical view, E. apico-dorsal view, F. apical view; G. apico-ventral view; K. lateral view; H, L. subgenital plate in ventral view; A – H. male; I – L. female.

FIGURE 5. Nigrimacula quadrinotata (Bey-Bienko, 1971) com. nov., holotype: A – B. dorsal view; C – D, F. lateral view; E. ventral view; G. ovipositor in lateral view; F, G. from Eades et al. (2016).

FIGURE 8. Habitus lateral view of Nigrimacula spp.: A, C, E. male; B, D, F. female: A – B. Nigrimacula paraquadrinotata (Wang, Liu & Li, 2015) com. nov.; C – D. Nigrimacula xizangensis (Jiao & Shi, 2013) com. nov.; E – F. Nigrimacula quadrinotata (Bey-Bienko, 1971) com. nov.