Larnaca (Larnaca) nigrimacula Zhang & Zhang & Bian 2023, sp. nov.
Creators: name: Zhang, Qianwen
name: Zhang, Bin
name: Bian, Xun
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllacrididae
Larnaca
Larnaca nigrimacula

description: Larnaca (Larnaca) nigrimacula sp. nov.
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Figures 2–4
Description. Male. Body large and stout. Fastigium verticis wider than scape. Face with transverse riffles and scattered impressed dots (Fig. 2A). Ocelli distinct.
Anterior margin of pronotum projecting in middle, posterior margin widely arched (Fig. 2B); lateral lobes longer than high with a V-shaped furrow (Fig. 2C–D). Fore coxae with 1 spine. Fore and middle femora unarmed on ventral surfaces; left hind femur with 8 internal and 7 external spines on ventral surface, while the right one with 10 pairs of spines. Fore and middle tibiae with 5 pairs of ventral spurs, including 1 pair of apical ones, middle tibiae with 1 internal spine on dorsal surface; hind tibiae with 6 pairs of spines on dorsal surface, apices with 1 pair of dorsal spurs, 1 pair of subapical ventral spurs and 2 pairs of ventral spurs. Wings slightly surpassing the apex of abdomen. Venation of tegmen simple (Fig. 4C), all the veins free from base, with 5 anal veins. Third abdominal tergite with 3 remnant stridulatory pegs (Fig. 2E). Eighth abdominal tergite slightly prolonged and directing downward (Fig. 2F). Ninth abdominal tergite furrowed along the midline, in apical area with an oval swelling on both sides of midline prolonged at ventro-medial angle into a spine which crossed and pointing ventrad and inwards, apices acute (Fig. 2G). Cerci long and incurved. Subgenital plate wider than long, the lateral margins convex, converging; posterior margin oblique on both sides and with a distinct, triangular concavity in middle (Fig. 2H); styli inserted at middle areas of lateral margins of subgenital plate (Fig. 2H).
Female (last instar nymph). The lateral margins of basal half in seventh abdominal sternite rounded, converging to apex after middle area; ventral surface in more than apical half convex with a large medial groove with smooth shining surface and provided before hind margin, lateral margins of groove gradually raised into a styliform process on each side (Fig. 4C). Subgenital plate very short and wide, base covered by seventh sternite; posterior margin with an obtusely triangular concavity in middle, the lateral lobes obtuse (Fig. 4C).
Coloration. Body yellow brown. Face red brown. Labrum, fastigium verticis between antennal cavities, margins of antennal cavities and antennae black. Ocelli yellowish. Eyes black. Dorsal surface of head with black patterns (Fig. 2B). Margins of pronotum black, disc with irregularly black spots and stripes (Figs. 2B, 3A). Tegmina orange brown, at tip semi-transparent white. Internal and external surfaces of all femora black, all tibiae and tarsi black. Abdomen red brown.
Measurements (mm). Male (holotype): BL 27.0, PL 7.2, TL 20.9, HFL 16.1.
Material examined. Holotype: male, Gulinjing, Maguan, Yunnan, June 11, 2022, coll. by Xiangjin Liu. Other specimen: 1 female last nymph, the other information as holotype.
Distribution. Yunnan (Maguan).
Discussion. The new species differs from Larnaca (Larnaca) walle Yin & Meng, 2021 and Larnaca (Larnaca) lieyongzhou Shen & Yin, 2022 by pronotum yellow brown with irregularly black patterns (Fig. 2B); male subgenital plate wider than long, the posterior margin between styli wider and slightly projected with triangular concavity (Fig. 2H).
Etymology. Name derived from Latin nigr and macul, referring to pronotum yellow brown with irregularly black spots or stripes.
description: Published as part of Zhang, Qianwen, Zhang, Bin & Bian, Xun, 2023, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera) XV: Two new species of Larnaca (Larnaca) from Yunnan Province, pp. 291-296 in Zootaxa 5315 (3) on pages 293-294, DOI: 10.11646/zootaxa.5315.3.7, http://zenodo.org/record/8130670