Melanabropsis guizhouensis Chen, 2024

Chen, Po-Wei, 2024, Macropterous species of genus Melanabropsis Wang & Liu, 2020 (Orthoptera: Anostostomatidae: Anabropsini) from the localities predicted in a previous study, Zootaxa 5538 (5), pp. 457-464 : 458-459

Melanabropsis guizhouensis Chen sp. nov.

Fig. 1

Holotype: male, Tachiangshan , Huahsi, Guiyang C., Guizhou prov., CHINA. 22-VIII-2001, Coll. C. S. Lin & W. T. Yang, Sweeping Net. Type specimen is deposited in National Museum of Natural Science, Taichung, Taiwan ( NMNS) .

Male: Body medium sized for the genus. Fastigium of vertex narrow, compressed dorsal-frontally, strongly narrowed between compound eyes, apex with a longitudinal furrow from dorsal view. ( Fig. 1A )

Pronotum saddle shaped, extend posteriorly.Dorsal anterior margin straight, dorsal median and postal transversal groove shallow, barely visible. ( Fig. 1B ) Posterior margin broadly rounded. Both Lateral lobes with a shallow lateral concave, margin rounded. ( Fig. 1C ) Prosternum unarmed, meso- and metasternum with a pair of trapezoidal shaped lobe. ( Fig. 1D )

Fore- and midcoxae armed with a spine; Fore femur ventrally armed with a few spinule; Fore tibia without tympana on both sides, dorsally unarmed except a pair of apical spurs, ventrally armed with 4 pairs of movable spines and a pair of apical spurs; Mid femur ventrally armed with a few spinules, mid tibia dorsally armed with 2 internal and 2–3 external movable spines and a pair of apical spurs, ventrally with 3 internal and 3–4 external movable spines and a pair of apical spurs; Hind femur ventrally armed with a few spinules, external surface with a series of parallel ridges, genicular lobes rounded, unarmed on both sides, hind tibia dorsally armed with 8~10 internal and 9 external spines and a pair of apical spurs, ventrally with 3 pairs of apical spurs, with the uppermost pair of the 3 ventral pairs of apical spurs longest in length. Numbers of spines and spurs on the appendages are shown in Table 1 . Tegmina wide and long, almost reaching apex of hind femur, caudal apex wide and round.

10 th abdominal tergite armed with a pair of barbs pointed foreword, tergite lobe between the barbs compressed downward, epiproct wide and short. Cerci long and slender, cylindrical, surface evenly setose. Paraproct straight, surface sparsely and evenly setose, apex with a lamellar lobe and a pointy tip bended upward. ( Fig. 2E ) Subgenital plate wide at base and gradually narrower toward the apex, with a medium longitudinal ventral groove in the posterior half, hind margin concave, width of posterior end of subgenital plate is around 1/2 the width at base. Styli long and wide, almost as long as the length of subgenital plate, overall long elliptic shaped, dorsally compressed after dried or preserved in ethanol. ( Fig. 1F )

Female: Unknown.

Coloration: Body overall brown dorsally. Head, pronotum and tegmen shiny dark brown. Antennal sockets, clypeus, mouthpart palps, coxae, basal part of fore and mid femur, distal part of tibiae, tarsi and styli somewhat pale yellow.

Comparison: This species is overall similar to M. nightfury Yin, 2024 , but differs in the following characteristics: body size overall larger, paraprocts are sparsely setose on the inner side, unlike the densely setose paraprocts in M. nightfury .

Measurements (in mm): Body length (with wings): ♂ 34.3; length of pronotum: ♂ 8.7; length of tegmina: ♂ 24.0; length of fore femur: ♂ 10.4; length of mid femur: ♂ 10.8; length of hind femur: ♂ 24.1; length of fore tibia: ♂ 11.4; length of mid tibia: ♂ 12.0; length of hind tibia: ♂ 22.5; length of subgenital plate: 3.5; length of styli: 3.3.

Habitat: Unknown.

Etymology: The name guizhouensis refers to the type locality, Guizhou province of China.

Figures

FIGURE 1. Morphological features of Melanabropsis guizhouensis sp. nov. A) male head in frontal view B) male head and pronotum in lateral view C) same in dorsal view D) male sternum in ventral view E) male paraprocts in posterior view F) male subgenital plate in ventral view.

FIGURE 2. Morphological features of Melanabropsis formosensis sp. nov. A) male head in frontal view B) male head and pronotum in lateral view C) same in dorsal view D) male sternum in ventral view E) male paraprocts in lateral view F) male subgenital plate in ventral view G) male right tegmen H) female ovipositor and subgenital plate in lateral view I) same in ventral view.