Diaphanogryllacris aequalis ( Walker, 1859 )

Ingrisch, Sigfrid, 2018, New taxa and records of Gryllacrididae (Orthoptera, Stenopelmatoidea) from South East Asia and New Guinea with a key to the genera, Zootaxa 4510 (1), pp. 1-278 : 157

Diaphanogryllacris aequalis ( Walker, 1859)

Figs. 53C , 57 J–K

Gryllacris annulata (Brunner von Wattenwyl, 1888)

Kirby 1906. A Synonymic Catalogue of Orthoptera 2:141> Gryllacris annulata as syn. of Gryllacris aequalis Walker, 1859 Karny 1927 . Zeitschr. gesam. Naturwiss. 88:1> Gryllacris annulata

Karny 1929. Ann. Naturhist. Mus. Wien 43:64> Gryllacris annulata as syn. of Gryllacris aequalis Walker, 1859

Karny 1937. Genera Insectorum 206:101> Gryllacris annulata as syn. of Diaphanogryllacris aequalis ( Walker, 1859) Material examined. Sri Lanka: Ceylon, leg. Makwood— 1 male (BrW16.117 lectotype of Gryllacris annulata , here selected) (Wien NHMW).

Diagnosis. Tegmen transparent, rather light with dark veins and veinlets; venation as in other species of the genus; the first branch of CuA receives a distinct short connection vein from MA before it divides into MP and CuA1 ( Fig. 53C ). All tibiae in middle with a distinct black mark. Ninth abdominal tergite furrowed in apical area, provided with a pair of minute, tooth-like projections from apical margin ( Figs. 57 J–K). Tenth abdominal tergite very short, band-like, notched in middle and provided on top with a pair of upright projections with acute tip ( Fig. 57K ).

Discussion. Brunner (1888) gives the following type data for Gryllacris annulata : " Ceylon (c. m.), Assam (Mus. Genav.)". Karny (1929) established the synonymy of G. annulata Brunner, 1888 with G. aequalis Walker, 1869 . He gives a list of four males and six females that had been identified by Brunner von Wattenwyl and should be regarded as belonging to the syntype series, all in NHMW Wien. All but one of these specimens are from Sri Lanka. Additional specimens of the original type series from Assam are in MHNG Genève ( Brunner 1888): one male and two females (Hollier & Maehr, 2012). The specimens from Assam need to be re-examined, they might belong to a different species. Thus a lectotype selection becomes necessary. The male from Brunner's collection in NHMW Wien with Brunner's label "16.117" is selected for this purpose. As Karny had seen G. aequalis Walker, 1859 before he studied the specimens in Wien (Karny 1929) and the types of both taxa are from Sri Lanka, the synonymy of both taxa is reasonable.

Figures

FIGURE 53. Genus Diaphanogryllacris, habitus dorsal view: A–B, D. annamita tenera ssp. nov. male holotype (A) and female paratype (B); C, D. aequalis (Walker, 1859) [lectotype of G. annulata Brunner, 1888 BrW16.117] male; D, D. recta? female from Cham Chu; E, D. brevispina Du et al., 2016 female; F, D. laeta (Walker, 1869) [holotype of G. chinensis Brunner, 1888 BrW14.463] male; G, D. sinuata sp. nov. male holotype; H, D. recta sp. nov. male holotype; I, D. opulenta sp. nov. male holotype. Scales 10 mm.

FIGURE 57. Genus Diaphanogryllacris: A–B, D. annamita (Griffini, 1909); C–D, D. panitvongi Gorochov et al., 2015 from Siem Reap; E, D. normalis Gorochov & Wozn., 1999; F, D. panitvongi Gorochov et al., 2015 from Con Son Island; G, D. t. translucens (Serville, 1839); H, D. simulator Gorochov & Wozn., 1999; I, D. laeta (Walker, 1869) [holotype of G. chinensis Brunner, 1888 BrW14.463] male; J–K, D. aequalis (Walker, 1859) [K, lectotype of G. annulata Brunner, 1888 BrW16.117] male—A–I, Male abdominal apex in apical (A, D–G, I–K) and in lateral view (B–C, H).—Abbreviations: 9th ninth abdominal tergite, 10th tenth abdominal tergite, ce cercus, e epiproct, pa paraproct, ph phallus, sg subgenital plate, st stylus. The arrows point at the spines at apical margin of ninth and tenth tergite.