Nahlaksia hainanensis He & Wang, 2020

He, Zhu-Qing, Wang, Han-Qiang, Liu, Yun-Feng, Tian, Di & Li, Kai, 2020, New and little known Agraeciini species from Hainan, China (Orthoptera: Ensifera: Tettigoniidae: Conocephalinae: Agraeciini), Zootaxa 4748 (1), pp. 153-162 : 154-156

publication ID	https://doi.org/ 10.11646/zootaxa.4748.1.8
publication LSID	lsid:zoobank.org:pub:4064ED8B-1DE7-4988-8D22-E980D7F9CF96
DOI	https://doi.org/10.5281/zenodo.3704202
persistent identifier	https://treatment.plazi.org/id/F31187C3-FFE2-FF92-FF35-FB2CFC9CDFA5
treatment provided by	Plazi
scientific name	Nahlaksia hainanensis He & Wang
status	sp. nov.

Treatment

Nahlaksia hainanensis He & Wang View in CoL sp. nov.

( Fig. 1 View FIGURE 1 ~3)

Holotype: male, CHINA, Hainan, Ledong, Jianfengling , 9-viii-2018, coll. HE Zhu-Qing ( ECNU).

Paratypes: 1 male & 1 female nymph, CHINA, Hainan, Sanya, Baolong , 21-iii-2019, coll. HE Zhu-Qing ( ECNU) ; 3 male nymphs & 4 female nymphs, CHINA, Hainan, Changjiang, Bawangling , 17-iii-2018, coll ( ECNU) ; 1 female & 1 male nymph, CHINA, Hainan, Wuzhishan , alt. 400m, 1-v-2017, coll. LIU Xian-Wei, WANG Han- Qiang , QIN Yan-Yan & JIANG Hui-Ting ; 1 female, CHINA, Hainan, Changjiang, Bawangling , alt. 460~ 1500m, 24-iv-2017, coll. LIU Xian-Wei, WANG Han-Qiang, QIN Yan-Yan & JIANG Hui-Ting ( SEM, CAS) .

Diagnosis. Similar to N. suphattra , but differs in the shape of male cercus having an additional slender spine, and the shape of female subgenital plate which bears a pair of triangular lobes posteriorly.

Description. Male. Head: antennae very long, eyes small; fastigium verticis conical but step-like inclined in circa half of length, with lateral ocelli projecting laterad, apex sub-obtuse ( Fig. 2B View FIGURE 2 ), dorsal surface with a tubercle near base, ventral surface with medial carinula, numerous irregular tubercles beneath the antennal scrobe forming a transverse carina each side; frons rugose and pubescent ( Fig. 2A, B, D View FIGURE 2 ). Pronotum rugose and sub-pubescent, regularly curved from one side to the other, transverse sulcus not clear on disc or lateral lobes, anterior margin broadly rounded, slightly protruding in middle, posterior margin concave, lateral lobe longer than deep, ventral margin subsinuate, anterior angle rounded, posterior angle circa rectangular but angle itself rounded, humeral sinus absent ( Fig. 1A View FIGURE 1 & 2A View FIGURE 2 ). Tegmen micropterous ( Fig. 2A View FIGURE 2 ); prosternum unarmed, meso- and metasternal lobes rounded ( Fig. 2C View FIGURE 2 ). Legs setose and pubescent, fore and middle femora compressed and broadened, fore femur with spines on both margins of ventral surface; middle- and hind femora armed on ventro-external margin; genicular lobes of fore and middle femora rounded externally, spinose on internal margin, tympana present on both sides, shield-like ( Fig. 2E View FIGURE 2 ); femora with the following number of spines on ventral margins: fore femur 4 external, 4 internal, middle femur 5 external, 0 internal, hind femur 7~8 external, fore tibia 8 external, 8 internal, middle tibia 5~9 external, 0 internal, hind tibia 1 (tiny) external, 0 internal, 7~9 external and internal spines on dorsal margin, with external ones smaller. Abdomen: tenth abdominal tergite triangular with apex bi-spinose ( Fig. 2F View FIGURE 2 ); apex of subgenital plate extended into two long parallel projections ( Fig. 2H View FIGURE 2 ), cerci conical, apex obtuse, downward curved, with a small spinule in inner side ( Fig. 2F, G View FIGURE 2 ).

Female: similar to male but squamipterous ( Fig. 1B, C View FIGURE 1 & 3A View FIGURE 3 ), tegmina laterally situated and never interlaced ( Fig. 3B View FIGURE 3 ~E). Tenth abdominal tergite faintly extended in the central of posterior edge, slightly bilobate in terminal. Epiproct rounded-triangular. Cerci conical, apex pointed ( Fig. 3F, G View FIGURE 3 ). Subgenital plate dorsally curved from one side to another, central one-third of width elevated ventrally and extended posteriorly but deeply notched in the middle resulting a pair of triangular lobes produced ( Fig. 3F, G View FIGURE 3 ). Ovipositor elongate and gently upcurved in apical two third; margins smooth, dorsal valves furrowed laterally ( Fig. 3H, I View FIGURE 3 ).

Coloration. Brown with irregular white or yellow spots ( Fig. 1A View FIGURE 1 ). Frons black including fastigium frontis, antennal scrobe, otherwise red to yellow towards mandibles, mandibles brown, palpi yellow, compound eyes yellow in dorsal and black in ventral ( Fig. 2D View FIGURE 2 ), pronotum black in disc and yellow in paranota, tegmen: veins in dorsal field green and veins in lateral field yellow ( Fig. 1A, C View FIGURE 1 ), ventro-internal lobes of middle and hind coxae white ( Fig. 2C View FIGURE 2 ), hind femur with a large black spot followed by a long, whitish ring, ovipositor brownish in the base and the remainder darker. Dorsal areas of fore- middle- and hind femur and middle and hind tibiae with green pattern, seen best when alive ( Fig. 1A View FIGURE 1 ).

Measurements (in mm).

Male: body 22.05–22.78, pronotum 5.73–5.99, tegmen circa 1.32–1.71, hind femur 10.28–10.89;

Female: body 17.52–21.34, pronotum 5.46–6.02, tegmen circa 1.26–1.38, hind femur 10.27–11.49, ovipositor 11.90–12.68.

Etymology. This species is named after the type locality.

Biology. This species prefers branches and is widely distributed in Hainan ( Fig. 1A View FIGURE 1 ~E). Although the male tegmen has developed mirror, stridulations have not been observed..