Bioacoustics and systematics of Mecopoda (and related forms) from South East Asia and adjacent areas (Orthoptera, Tettigonioidea, Mecopodinae) including some chromosome data Author Heller, Klaus-Gerhard Grillenstieg 18, 39120 Magdeburg, Germany Author Baker, Ed Department of Electronic Engineering, University of York, York, YO 10 5 DD, United Kingdom & Department of Life Sciences, Natural History Museum, London, SW 7 5 BD, United Kingdom. Author Ingrisch, Sigfrid Zoological Research Museum Alexander Koenig, Adenauerallee 160, D- 53113, Bonn, Germany. Author Korsunovskaya, Olga Lomonosov Moscow State University; Leninskie Gory, 1, building 12, Moscow, 119234, Russia. Author Liu, Chun-Xiang 0000-0002-6313-196X Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. iucx @ ioz. ac. cn; https: // orcid. org / 0000 - 0002 - 6313 - 196 X iucx@ioz.ac.cn Author Riede, Klaus Zoological Research Museum Alexander Koenig, Adenauerallee 160, D- 53113, Bonn, Germany. Author Warchałowska-Šliwa, Elżbieta 0000-0001-7812-1644 Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków, Poland. warchalowska @ isez. pan. krakow. pl; https: // orcid. org / 0000 - 0001 - 7812 - 1644 warchalowska@isez.pan.krakow.pl text Zootaxa 2021 2021-07-26 5005 2 101 144 journal article 2565 10.11646/zootaxa.5005.2.1 49bbd860-f04e-444c-8c91-43b938789f38 1175-5326 5141281 6DF7D106-A8FD-4670-AC09-18166D7F4BD4 Mecopoda paucidens Ingrisch, Su & Heller sp. nov. Holotype , male, East Timor : Maubisse , elev. 1431 m [ 8°50’S , 125°36’E ], 1–10 vi 1965 , coll. R .N. Ferreira. ANIC . Other specimens studied: see below. Diagnosis. The new species differs from all other species of the genus so far known by the narrow tegmen combined with the very low number of teeth on the male stridulatory file on underside of the left tegmen ( Fig. 23 ). Member of the M. elongata group. Description. General habitus of the genus. Medium sized species with narrow tegmina; tegmen moderately curved in midlength, its greatest width 11 mm . Subcosta attached to radius except at very base, it separates before the curvature that brings both veins close to the anterior margin of tegmen. Male: Stridulatory file with 44 (Timor) respectively 50 ( Java ) teeth. Cerci stout at base, markedly curved mediad and narrow in about apical third, in apical area on internal side with two minute spines. Subgenital plate moderately wide, narrowed from base towards midlength; divided into two lobes, apical incision about 0.28 times the length of the subgenital plate; styli narrow, moderately long, about 10:22 the length of the apical incision of the subgenital plate. Measurements ( 1 male ). Body w/wings: 73; body w/o wings: 33; pronotum: 8.8; tegmen: 61; hind femur: 56; tegmen width: 11 mm . Other specimen studied: Indonesia : Central Java , Gunung Lawu , Tawangmangu , elev. 1000–1200 m ( 7°39’S , 111°7’E ), 28 iii 1993 , coll. S. Ingrisch , 3261458 (CI) . Male cerci not very stout at base but little stronger than in the other species from Java , narrow apical area moderately curved, at internal side just before and at the end with two minute acute black teeth, the apical tooth hardly larger than the preapical tooth. FIGURE 22 . File diversity in Mecopoda in selected areas. A Borneo, B Indonesian islands Sumatra-Java-Bali-Timor, C Thailand. Inter-tooth spacing in stridulatory files. Thick lines indicate specimens with known song. Red/lilac lines presumed niponensis subgroup, blue presumed confracta subgroup, green unknown, black paucidens . In the legend after specimen ID the number of stridulatory teeth and relative width of the mirror cells (width/length; in brackets). FIGURE 23. Mecopoda paucidens sp. nov. : habitus (A, D), mirror area of right tegmen (B, E), stridulatory file of left tegmen (C, F).— A–C: male from Gunung Lawu, Java; D–F : holotype male from Timor. The thin lines mark the measuring tracks (A–E) or the borders between bulks of five teeth (C, F). Measurements ( 1 male ). Body w/wings: 65; body w/o wings: 35; pronotum: 7.5; tegmen: 55; hind femur: 43; tegmen width: 11.5 mm . Song. Unknown. Derivatio nominis. Named according to its stridulatory file which carries only relatively few (Latin pauci) teeth (Latin dens=tooth). Noun in apposition.