Oxyartes bouxraeuz, Gao & Wang & Zhang, 2024

Gao, Hao-Ran, Wang, Chen & Zhang, Hong-Rui, 2024, A remarkable new species and one newly recorded species of genus Oxyartes Stål, 1875 (Phasmida, Lonchodidae, Necrosciinae) from China, Zootaxa 5419 (3), pp. 419-429 : 423-428

Oxyartes bouxraeuz sp. nov.

( Figs. 5 ; 6A,C ; 7–8 )

Diagnosis. Previously, O.lamellatus was considered the longest and stoutest species of the genus and had the following characteristics: body robust and long; mesonotum with a pair of small spines on the anterior margin; only hindwings distinct and scale-like.

The new species is a large species similar to O. lamellatus . The female (♀) of new species can be distinguished from O. lamellatus by the following characteristics: larger size; the anterior margin of mesonotum with a pair of long and strong spines; forewings developed and erect; larger hindwings compared to O. lamellatus ; seventh abdominal tergum with a pointed-apex posteromedian lamella ( Fig. 5A–C , 6C ). The male (♂) of new species can be easily separated from O. lamellatus by the combination of the following characteristics: the posterior margin of the mesonotum with a pair of strong and forward-curving spines; hindwings are relatively larger than male of O. lamellatus ( Fig. 7A–C ).

Materials. Holotype. 1♀, China, Yunnan Province, Wenshan Zhuang and Miao Autonomous Prefecture , Maguan County, Gulinqing Nature Reserve , N22.81339°, E103.97092°, 29-VI-2021, leg. Xiang-Jin Liu ( YNAU).

Paratype. 1♂, same data as holotype .

Etymology. The new species is named after the Zhuang (Bourau) nationality. Bouxraeuz is in the Zhuang language.

Description. Female. Large-sized. Micropterous. General coloration of body brown.

Head. Oval and rough, longer than wide. Compound eyes black and rounded when dried. Antennae filiform brown and long, predicting over the apices of protarsi; scapus basally flattened, longer than pedicellus and the third segment; pedicellus ellipsoidal, slightly longer than the third segments; one black segment appears every 4–5 segments. The posterior margin of head with six small indistinct swellings.

Thorax. Rough, covered with small granules. Pronotum rectangular; 1 pair of small spines on the anterior margin, behind with a transverse sulcus; transverse and longitudinal sulci crossing before middle area; a pair of small spines on either side of the front of the point of intersection. Mesonotum densely covered with small spines, especially the lateral margin; 1 pair of long and forward spines on the anterior margin; the median carina present but indistinct; a pair of short, stout spines on the posterior margin. Mesopleurae with balck and white bans. Ventral surface of mesothorax with small granules.

Abdomen. Dark and cylindrical. Tergites II–VI almost equal in length. Media segment to tergites V with a small spine posteromedially. Tergites II–VI almost equal in length. Sixth tergum and seventh tergum with a lamella crest posteromedially, the one on the sixth tergum smaller. Tergites VIII–X without posteromedial structure. Posterior margin of anal segment with distinct posterolateral angles, posteromedian elevations and median elevation, forming 5 small posterior emarginations. Seventh sternum with a bifurcate and apices-pointed praeopercular organ on posteromedian area. Operculum scoop-shaped, with distinct median carina and blunt-apex, no surpassing end of anal segment. Cercus short, reaching the end of operculum, cylindrical, setose, with rounded apex.

Legs. Dark, slender and unarmed. Profemora incurved basally. Tarsus is composed of 5 tarsomeres (the 4th tarsomere shortest); claws distinctly setose. Ventral carinae of pro-, meso- and metafemora with 3–4 small serrations subapically.

Wings. Tegmen present, dark and erect. The costal area of hind wings generally dark. The anal area of hind wings red with black band on the veins.

Male. The male of the new species is very similar to O. lamellatus . Medium-sized. Micropterous. General coloration of body brown.

Head. Oval, longer than wide. Compound eyes black and rounded when dried. A pair of black stripes behind the base of antennae. Antennae filiform brown and long, surpassing the apices of protarsi; the third segment longer than pedicellus; from the fourth segment, apices of flowing segments dark. Some dark stripes behind compound eyes in lateral view.

Thorax. Pronotum rectangular, with transverse and longitudinal sulci crossing before middle area. 2 pairs of distinct spines on pronotum: 1 smaller pair on the anterior margin; 1 longer pair behind but before the transverse sulcus of the crossover sulci. Mesonotum densely covered with distinct spines; the longest and forward pair on the anterior margin; with 5 or 6 spines on each side of median carina. The posterior part of mesothorax thickened; with a pair of strong spines. Ventral surface of mesothorax densely with tiny and dark spines.

Abdomen. Dark and cylindrical. Tergites II–VI almost equal in width. Tergites VII–IX expanding. Tergites I–VI with a posteromedial tiny spine; tergum VII with a posteromedial lamella; tergites VIII–X with median carina. The ventral surface of anal segment with densely tiny granules. Poculum scoop-shaped, posterior margin rounded. Cercus short, cylindrical, setose, with rounded apex.

Legs. Dark, slender and unarmed. Profemora incurved basally. Tarsus is composed of 5 tarsomeres (the 4th tarsomere shortest); claws distinctly setose.

Wings. Tegmen present, dark with yellow variegated and not erect. The costal area of hind wings generally dark. The anal area of hind wings red with black band on the veins.

Measurements. See Table 1 .

Chinese common name. 布ẇṉ异DZ.

Figures

FIGURE 5. Oxyartes bouxraeuz sp. nov., female, holotype. A. habitus, dorsal view; B. habitus, ventral view; C. habitus, lateral view; D. terminalia, dorsal view; E. terminalia, ventral view; F. terminalia, lateral view. [Scale bar 10mm]

FIGURE 6. Oxyartes spp., wings and terminalia of female, lateral view. A&C. Oxyartes bouxraeuz sp. nov. B&D. Oxyartes lamellatus.

FIGURE 7. Oxyartes bouxraeuz sp. nov., male, paratype. A. habitus, dorsal view; B. habitus, ventral view; C. habitus, lateral view; D. terminalia, dorsal view; E. terminalia, ventral view; F. terminalia, lateral view. [Scale bar 10mm]

FIGURE 8. Oxyartes bouxraeuz sp. nov. A–B. habitat; C. mating pair. Photo credit: A–B: © Zheng Zhou; C: © Xiang-Jin Liu.

Tables

TABLE 1. Measurements of Oxyartes bouxraeuz sp. nov.

Length (mm)	Holotype (♀)	Paratype (♂)
Body	111.5	80.5
Head	8.0	4.8
Antennae	-	67.8
Pronotum	9.6	4.0
Mesonotum	22.7	18.0
Metanotum	8.2	4.5
Profemora	24.0	21.3
Mesofemora	19.5	15.7
Metafemora	21.3	21.5
Protibiae	23.8	22.2
Mesotibiae	18.3	15.5
Metatibiae	29.6	23.6