Tuberfemurus viridulus, Wang & Deng & Guan & Mao & Li, 2021

Wang, Meng-Qi, Deng, Yao, Guan, De-Long, Mao, Ben-Yong & Li, Miao, 2021, A new species of the genus Tuberfemurus (Orthoptera: Tetrigoidea: Cladonotinae) with comments on the characters of mitochondrial genome, Zootaxa 5071 (3), pp. 437-446 : 439-442

Tuberfemurus viridulus sp. nov.

( Fig. 1 )

Type material. Holotype: ♀, China: Yunnan Province: Pingbian , 22°55′ N, 103°41′ E, 2090 m alt., 28 July, 2020, collected by Miao Li, deposited in BMDU . Paratypes: one ♂, collected by Meng-Qi Wang, the other same as holotype, deposited in BMDU .

Description. Female. Size small and robust, body surface coarse and uneven, covered with many granules and protuberances.

Head not exserted above pronotal surface. In dorsal view, vertex between eyes 2.5 times as wide as an eye; anterior margin almost straight, not surpassing anterior margin of eyes; medial carina visible in anterior half and clearly higher than level of upper margins of eyes but absent in posterior half; paired fossulae deep, a small protuberance clear behind fossula; lateral carina produced upwards and nearly elevated to level of upper margins of eyes. In lateral view, fastigium of vertex together with frontal costa obtuse-rounded; frontal costa obviously concave above lateral ocelli and invisible, fascial carinae between antennal grooves smooth, strongly arched forwards. In frontal view, frontal costa bifurcated into facial carinae above paired ocelli, nearly in middle of inner margin of eyes; longitudinal furrow between antennae deep, as wide as the diameter of antennal scapus. Antennae filiform, antennal grooves distinctly inserted below lower margin of eyes, 14-segmented, the 9th segment longest, about 5.0 times as long as wide. Eyes globose, lateral ocelli located between lower 1/3 of inner margin of eyes.

Pronotum broad and short. In dorsal view, dorsum of pronotum dotted and rugose, tectiform; anterior margin straight; median carina entire and strongly lamellate elevated, anterior half arch-like and posterior half suddenly depressed near to straight in profile; prozonal carinae legibly lamellar and parallel; disc with a tuberous protuberance between shoulders and with a pair of short interhumeral carinae on the protuberance; humeral angle indistinct; humero-apical carina with the front part clearly developed and the rear part composed of fine particles; two large posthumeral spots distinct; apex of hind pronotal process wide and distinctly truncate with a middle notch, reaching middle of hind femur. In lateral view, lateral lobes of pronotum with posterior angles produced outwards, apex truncate; posterior margins of lateral lobes only with ventral sinus; external lateral carina of hind process curved, lamellate; internal lateral carina disappeared; lower margin curved, infrascapular area with width about 1.2 mm. Tegmen and alae absent. Upper margin of fore and middle femur slightly sinuate; lower margin of fore femur sinuate and with two teeth, lower margin of mid femur sinuate and with 3 teeth; hind femur stout, 3.5 times as long as wide, upper margin gentle serrated in posterior, lower margin with 5–6 weakly fine teeth, dorsal external area with a series of thick tubercles; ventro-external carina with two triangular projections; antegenicular and genicular denticles acute, distinctly elevate; inner margins of hind tibia serrate, outer or inner side with eight spines. Length of first segment of hind tarsus slightly longer than third, first pulvillus shorter than second and third; first pulvilli small, three pulvilli larger in turn, apices of three pulvilli acute.

Ovipositor slender and elongate, upper valve 5.0 times as long as wide, upper margin arcuate, outer margins of upper and lower valves with saw-like teeth. Length of subgenital plate nearly equal to its width, median carina visible, longitudinal and transverse creases clear in apical half, middle of posterior margin of subgenital plate with a triangular projection.

Coloration. Head and pronotum gray green, with a pair of large blackish spot behind shoulder. Median carina of pronotum light brown and interrupted by 11 white spots; infrascapular area brown with two yellowish white strips. Fore and mid femur and tibiae gray green and dotted with yellowish white spots or strips. Hind femur gray green, but ventral external area black, with two yellowish white strips on median external area; hind tibia brown with two yellowish white rings.

Male. Similar to female. The different characteristics from female are as follows. Body slender and smaller. Vertex between eyes 2.2 times as wide as an eye. Pronotum with width of infrascapular area about 1.0 mm, dorsal external area of hind femur with 3–4 strong projections; outer side of hind tibia with 6–8 spines, inner side with 7–8 spines. Subgenital plate brief cone-shaped, apex bifurcated. Hind femur dark green, but ventral external area black, with one brown-yellow strips on median external area.

Measurements. Length of body, ♀ 10.5 mm, ♂ 7.5 mm; length of pronotum, ♀ 6.2 mm, ♂ 5.2 mm; length of hind femur, ♀ 7.3 mm, ♂ 6.0 mm.

Diagnosis. The new species is similar to Tuberfemurus torulisinotus Deng, 2019 , but can be differentiated from the latter by: 1) width of vertex between eyes 2.5 times width of an eye (2.0 times in the latter); 2) in lateral view frontal costa invisible (visible in the latter); 3) apex of hind pronotal process distinctly truncate (widely rounded and weak excision in the latter); 4) lower outer carinae of hind femur with two large triangular projections (2–3 small projections in the latter).

Etymology. The specific epithet is derived from the Latin words “ virido ” indicating the coloration of body which is principally green.

Distribution. China (Yunnan).

Habitat. The new species Tuberfemurus viridulus sp. nov. were observed and collected in humid mosses under broad leaved forests (chiefly Fagaceae plants) alongside bamboo forests on a high mountain (alt. 2090 m) ( Fig. 2A ). The body color is so close to the green moss that it's hard to spot them, and it is not easy to obtain large samples for study ( Fig. 2B ).

Figures

FIGURE 1. Tuberfemurus viridulus sp. nov. A–B. Female body, dorsal and lateral views; C–D. Male body, dorsal and lateral views; E. Female head, frontal view; F–H. Left fore, middle and hind femur, lateral view; I. left hind tarsi, lateral view; J. Female ovipositor, lateral view; K. Female terminalia, ventral view; L. Male subgenital plate, ventral view. Scale bar = 1 mm.

FIGURE 2. Habitat of Tuberfemurus viridulus sp. nov..