Indozacla dorsiglaber Ma & Wang, 2025

Wang, Ning, Xie, Can-Hong, Zhang, Tao & Ma, Li-Bin, 2025, New distribution records for Phalangopsinae, Indozacla Gorochov, 2018, and Meloimorpha cincticornis Walker, 1870 in China, along with a report on a new species Indozacla dorsiglaber Ma & Wang sp. nov. (Orthoptera: Phalangopsidae), Zootaxa 5653 (4), pp. 553-562 : 559-560

Indozacla dorsiglaber Ma & Wang , sp. nov.

Chinese name: 光ü印øDz

( Figs. 4C, D ; 5D–F )

Type materials. Holotype. CHINA. ♂, Xizang, Yadong Co.; 27.26°N, 89.02°E; 7.ix.2023; T. Zhang leg.; XZ-2309-037 ( SNNU) ; Paratypes. 1♂ & 4♀, same data as the holotype; XZ-2309-042 / 035 / 36 / 043 / 040 ( SNNU) .

Etymology: The name of this new species is a combination of “dorsum” and “glaber”; “dorsum” is used to refer to the dorsal surface of the abdomen, and “glaber” is used to characterize smoothness, both of which are used to indicate that the dorsal of the first abdominal segment of the new species is smooth.

Description

Head. Vertex broad and covered with setae; occiput curved and slightly narrower with pronotum ( Fig. 4C, D ). Eyes small and distinctly protruding; three ocelli, ovoid. The frontal rostrum slightly protruding, somewhat narrower than the antennal scape. Antennal scape with curved inner border and a straight outside. Anteclypeus shaped as a broad shield, with the middle part distinctly protruding; postclypeus trapezoidal. Maxillary palpi distinctly broad at the end of the fifth segment, as long as the third segment. Pronotum. Pronotal length equals width; the anterior of the pronotum disc narrower than the posterior; anterior margin of the lateral lobe wider than the posterior margin and with grooves. Abdomen. Forewings ovoid, reaching the base of the first abdominal tergite. The first abdominal segment shiny, and the other segments covered with dense hairs. The central part of the supra-anal plate with a longitudinal groove; the lateral margins slightly concave, posterior margin slightly prominent. The cercus about half the length of the abdomen. Legs. Tympanum absent. The posterior femora well developed, about equal to body length. Dorsal spurs of posterior tibiae numbered 4: 4 (inner: outer), ventral one shortest, the external with four spines between the first and second dorsal spurs; between the second and third dorsal spurs there are four spines; between the third and fourth dorsal spurs there are no spines; internal surface with one spine between the first and second dorsal spurs. Apical spurs number three on both sides, and the ventral one shortest of the outer apical spurs; the dorsal one longest of the inner ones.

Male genitalia. In lateral view, the epiphallus curved, with a dorsal spine in the middle; the lateral lobe of the epiphallus lamellate, anterior broader, and posterior contracted. Ectoparamere consists of two parts, the dorsal lamellate with a small central protuberance, the anterior inflated and membranous, and the posterior broadly lamellar pointing dorsally. Curved rod-like structure on the ventral, pointed at the top ( Fig. 5D–F ).

Female. Wingless; the first abdominal tergite covered with densely hairs. Ovipositor almost as long as cercus. All other parts consistent with males.

Coloration. Antennal scape brown, and pedicel brownish red, and other parts alternately black or brown. Vertex with brown longitudinal bands; ocellus surrounded by black spots; anteclypeus reddish brown. Pronotum black with a few brown spots; cercus reddish brown. Foreleg and midleg black with brown annular bands. The posterior tibiae brown at the base, with alternating black and brown bands at the tips.

Measurements. Male (n = 2). BL 8.63–8.67, HL 0.85–0.91, HW 1.81–1.85, PL 1.91–1.98, PW 2.33–2.71, FWL 0.54–0.63, HFL 9.08–9.23; Female (n = 4). BL 8.21–8.88, HL 0.79–1.01, HW 1.95–2.13, PL 2.00–2.32, PW 2.50–2.64, HFL 8.77–9.93.

Remarks. This new species is similar to Indozacla discifera ( Gorochov, 2003) in that males of both have ovoid forewings, females are wingless, and the epiphallus is curved at the anterior. However, in the males of the new species, the posterior margin of the supra-anal plate is slightly protruding, and the forewings extend to the middle of the first abdominal tergite, whereas, in males of the latter species, the posterior margin of the supra-anal plate is slightly concave, and the forewing completely cover the first abdominal tergite. In the new species, the middle protuberance of the epiphallus forms a dorsal spine and the middle of the ectoparamere has a small lateral protuberance, make it easy to distinguish between the two species, and we therefore consider the specimen collected from Tibet to be a new species ( Table 2 ).

Figures

FIGURE 4. Bodies of M. japonica and I. dorsiglaber. A (male) and B (female). body of M. japonica; C (male) and D (female). body of I. dorsiglaber.

FIGURE 5. Comparative genital morphology. A–C: M. japonica genital in dorsal (A), lateral (B), and ventral view (C); D–F: I. dorsiglaber genital in dorsal (D), lateral (E), and ventral view (F).