Atlanticus (Atlanticus) yashani Liu, 2013

Liu, Chun-Xiang, 2013, Review of Atlanticus Scudder, 1894 (Orthoptera: Tettigoniidae: Tettigoniinae) from China, with description of 27 new species, Zootaxa 3647 (1), pp. 1-42 : 11-13

publication ID	https://doi.org/ 10.11646/zootaxa.3647.1.1
publication LSID	lsid:zoobank.org:pub:32F8988B-2283-44B0-9898-80906E04CC49
DOI	https://doi.org/10.5281/zenodo.5263203
persistent identifier	https://treatment.plazi.org/id/038D5F0B-FFFA-1546-FF49-FCBE9C44FDB7
treatment provided by	Felipe
scientific name	Atlanticus (Atlanticus) yashani Liu
status	sp. nov.

Treatment

Atlanticus (Atlanticus) yashani Liu View in CoL sp. n.

( Fig. 1D,E View FIGURE 1 ; 2D,E View FIGURE 2 ; 3D,E View FIGURE 3 ; 4D,E View FIGURE 4 ; 7D,G,H View FIGURE 7 ; 9D,E View FIGURE 9 ; 11D View FIGURE 11 ; Table 1)

Holotype. Male [IOZ(E)361902], China: Shandong Prov., Yashan , 1964.VII.26, Coll. Song Shimei.

Paratypes. 2 males [IOZ(E)361919, 1340883], 5 females [IOZ(E) 1340877–1340879, 1340884–1340885], same data as in holotype, but 1964.VII.15–VIII.31.

Diagnosis. Medium-sized compared to the congeners in Kulingensis Group ( Fig. 7D,G View FIGURE 7 ; 9D View FIGURE 9 ). Proximal three quarters of stridulatory file on underside of male left tegmen with 60 distinct teeth gradually becoming larger centrad ( Fig. 1D View FIGURE 1 ). Proximal part of mirror of male right tegmen concealed by pronotum ( Fig. 2D View FIGURE 2 ). Male tenth abdominal tergum with a reversed pot-shaped cleft from apical half continuing to apex ( Fig. 4D View FIGURE 4 ). Male cercus forcipate, moderately long, robust in basal one third part until strong internal tooth, then rapidly narrowed and moderately incurved in apical third part ( Fig. 3D View FIGURE 3 ). Apical margin of male subgenital plate with a very shallow wide “U”-shaped notch between styli ( Fig. 11D View FIGURE 11 ). Female with ovipositor robust (1.5mm wide in middle), twice longer than pronotum with moderately recurved apical half (about 30º angle).

Description. Holotype. Male. Disc of prozona slightly convex, and metazona approximately flat. Pronotum narrowest in proximal quarter, and then gradually ampliate caudad. Lateral lobes of pronotum slightly longer than high, deepest at middle; anterior margin slightly concaved, posterior margin oblique with a very indistinct central concavity, ventral margin aslant caudad to posterior angle. Tegmen extending to caudal margin of the second abdominal tergum with a reticulation of poorly defined veins; posterior portion convex ( Fig. 7D View FIGURE 7 ; 9D View FIGURE 9 ). Fore femur with 2 interior ventral spines. Middle femur with 1 external ventral spine in apical part. Hind femur with 5 ventral spines on both margins. Fore tibia with 3 dorsal external spines and 6 ventral spines on both margins. Middle tibia with 6 ventral spines on both margins, 2 exterior and 4 interior spines on dorsal margins. Hind tibia with 24 exterior and 20 interior spines on dorsal margins.

Female. Proximal half of ovipositor narrowed from base, remainder of equal width, with upper margin slightly obliquely truncated. Apical margin of tenth abdominal tergum and subgenital plate slightly emarginate.

Coloration. Generally dark reddish brown. The following parts shining black: inner surface of two basal antennal joints; fastigium frontis; frontal and lateral surfaces of fastigium verticis. The following parts shining dark brown: occiput; postocular fascia; lateral surface in apical half of fore femur; tibial tympanum and its surrounding portion; a robust line with indefinite striation separated the upper half from the lower half; numerous indefinite spots and striation on legs; wide fascia in five sixths of basal field between costal vein and costal margin of male tegmen and veins in stridulatory area on male left tegmen. Face, gena, and antennae except basal two segments reddish brown. Disc of pronotum dark reddish brown. Lateral lobes of pronotum reddish brown except a comparatively narrow brown fascia along the lower margin extending to humeral notch. Each abdominal tergum testaceous except with an inversely brown triangular area in central one-fifth. Ventral spines of hind femur black. Male tegmen generally pale.

Variation. One male paratype [No. IOZ(E)361919] possesses different characters from the holotype including male stridulatory apparatus, length of tegmen and coloration ( Fig. 1E View FIGURE 1 ; 2E View FIGURE 2 ; 3E View FIGURE 3 ; 4E View FIGURE 4 ; 7H View FIGURE 7 ; 9E View FIGURE 9 ). Proximal three-quarters of stridulatory file on underside of male left tegmen with 52 distinct teeth gradually becoming larger centrad. Most of mirror of right tegmen concealed by pronotum.

Notes. This new species belongs to the Kulingensis Group of Tinkham (1941), based on the structure of male cercus. It differs from A. kulingensis by its robust shape, shape of pronotum and its tegminal structure. The aforementioned male paratype possesses significantly different characters, indicating that it might be a different species. I reservedly consider it as variation of the new species for there is only one specimen at hand. Further investigation is needed to provide an accurate identification.

Etymology. The new species is named for its type locality.

Distribution. China (Shandong).