Larnaca ( Larnaca ) qianlei, Yin & Shen, 2025

Larnaca ( Larnaca) qianlei sp. nov.

千乐原üñ

( Figs. 1–6 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 , 10 View FIGURE 10 ; Tab. 1)

Holotype. ♂, China, Xizang Autonomous Region, Nyingchi City , Mêdog County, Beibeng Township ( 29.25°N, 95.17°E, Alt. 1800 m), 22-VII-2025, coll. local villager GoogleMaps . Paratypes. 1♂, same data as for holotype GoogleMaps . 1♀, China, Xizang Autonomous Region, Nyingchi City , Mêdog County, Damu Lhoba Ethnic Township , Gongri Village ( 29.66°N, 95.49°E, Alt. 2100 m), 30-IX-2021, coll. Qianle Lu. GoogleMaps

Description. Small species. Head and thorax. Occiput smooth ( Figs. 1B View FIGURE 1 , 3B View FIGURE 3 ); fastigium of vertex about 1.4 times as broad as scape; scape as long as eye; pedicel about half length of scape. Eyes ovoid ( Figs. 1A View FIGURE 1 ; 3A View FIGURE 3 ). Three ocelli distinct when alive ( Fig. 6A View FIGURE 6 ). Anterior margin of pronotum convex in the middle, posterior margin generally convex; lateral lobes longer than deep, ventral margin slightly concave in the middle ( Figs. 1 View FIGURE 1 BC; 3BC). Tegmina brachypterous ( Figs. 5 View FIGURE 5 ABCD; 6BCD) to mesopterous, veins as in Figs. 4 View FIGURE 4 AB; hind wings as long as tegmina ( Figs. 5A View FIGURE 5 ; 6 View FIGURE 6 BD). The second and third abdominal tergites each bear two rows of stridulatory pegs, the fourth abdominal tergite in female bears sparse stridulatory pegs ( Figs. 1D View FIGURE 1 ; 3 View FIGURE 3 CE).

Legs. Fore coxa with a spine at fore margin ( Figs. 1C View FIGURE 1 ; 3C View FIGURE 3 ); fore and mid femora unarmed; fore and mid tibiae dorsally unarmed; fore tibiae ventrally with 4 pairs of spines and one pair of smaller spurs; mid tibiae ventrally with 4 external and 3–4 internal spines and one pair of smaller spurs; hind femora ventrally with 3–4 internal spinules and 6–8 external spinules; hind tibiae dorsally with 6–7 internal spinules, 5–6 external spinules and one pair of apical spurs, ventrally with 2 pairs of apical spurs. Internal margins of hind femora with a row of stridulatory denticles ( Fig. 1E View FIGURE 1 ).

Male. Eighth abdominal tergite prolonged; ninth abdominal tergite curved downwards, furrowed along midline into 2 lobes with long hair covered, which apical area rather elongated into two long spiniform processes with finely granular surface, greatly crossed at midline and pointing inside ( Figs. 2 View FIGURE 2 ACD). Cerci slender and incurved ( Figs. 2 View FIGURE 2 ACD). Subgenital plate covered with long hair, broader than long; anterior margin straight; posterior margin bi-globular with slight-shaped median incision; styli elongated and incurved, inserted in posterior area of lateral margin of subgenital plate, also covered with hair ( Fig. 2B View FIGURE 2 ).

Female. Seventh abdominal sternite of normal size, posterior margin straight and smooth ( Fig. 3G View FIGURE 3 ). About 2/3 of the frontal area covered with hair, rest area bare. Subgenital plate covered with hair, rather wide but short, rapidly narrows down to a trapezoidal terminal area and left the basal part of ovipositor exposed, terminal edge slightly concave ( Fig. 3G View FIGURE 3 ). Ovipositor falcate and strongly upcurved; both its dorsal and ventral margins are smooth and nearly parallel to each other until just before the apex, tip subacute ( Fig. 3F View FIGURE 3 ).

Coloration. Upper and side parts of head generally black, transit to the same color as face around side-hind margin area; face generally yellowish white; ocellus whiteish yellow when alive; mandibles brown. Pronotum generally the same color as face, with dark frontal and lateral margins; one pair of larger, triangular dots are found in the frontal area fused with the dark margin while another pair of smaller, rectangular dots fuse with lateral dark margin. Tegmen clear in color with dark-colored veins. The color patterns of femora are unique and obvious: series of black and orange dots were found on both frontal and lateral sides of all six femora; the exact patterns of these dots are highly variable among different specimens. Broad dark color bands are found on all six femora, around terminus areas that are away from thorax; a black dot is located on the outer side of each tibia near the joints that connect femora and tibiae. For front and middle tibiae, smaller dark color bands are located around the joints that connect tibiae and tarsus. All tibiae armed with black spines. All tarsus concolorous as pronotum. 1–8 abdominal tergites with light hind margin, concolorous as face and pronotum, ninth abdominal tergite black.

Measurements (mm). Body (from head to tip of abdomen): 22.4( ♂)–28.11( ♀); pronotum: 5.18–5.37; tegmina: 10.28–12.86; hind wings: 10.23–10.93; fore femora: 7.23–7.47; middle femora: 6.91–7.09; hind femora: 10.92– 11.73; fore tibiae: 7.66–7.92; middle tibiae: 7.93–8.11; hind tibiae: 11.92–12.18; ovipositor: 9.44.

Etymology. This species is named after the collector Qianle Lu.

Diagnosis. Apart from its distinctive coloration, this species is morphologically similar to other Larnaca species previously described from Xizang: L. ( L.) rufifronta , L. ( L.) rubiabdomina , and L. ( L.) xizangensis . However, the posterior margin of the female seventh abdominal sternite is straight and smooth in L. ( L.) qianlei sp. nov., whereas in the other species it possesses a small median notch. Besides, the male ninth abdominal tergite differs in the structure of its spiniform processes: they are notably longer than the stylus, are downcurved, and overlap each other more extensively.

Notes. This species possesses a row of sparse teeth along the anterior margin of the pronotum ( Fig. 3D View FIGURE 3 ). This structure has rarely been documented previously; however, based on our observations of other Stenopelmatoidea species, we found that most of them also exhibit a similar dentate structure. We hypothesize that these teeth may function in removing debris from the occiput.

Distribution. Xizang, China (Mêdog).