Elimaea (Poaefoliana) kutu, Ingrisch, Sigfrid, 2011

Ingrisch, Sigfrid, 2011, New taxa of Elimaeini (Orthoptera: Tettigoniidae: Phaneropterinae) from South East Asia, Zootaxa 2935, pp. 1-25 : 7-8

Elimaea (Poaefoliana) kutu sp. n.

Figs. 1 E, 2E–F, 3H, 4L–M, 5M–N, 7H–J

Holotype (male): Malaysia: Selangor, Bukit Kutu [3°33'N, 101°43'E], 1006 m, 1.x.1932, leg. H.M. Pendlebury, depository: The Natural History Museum London ( BMNH).

Diagnosis. E. kutu has the phallic sclerites similar to E. poaefolia , but the lateral sclerites with narrower apical area, and the central sclerite has the base widened as a whole, the central area curved and the dorso-apical margin simply serrate instead of irregularly multi-spinulose. In contrast, the arrangement of three large and some small teeth on the stridulatory vein agrees with the situation in E. rosea and E. jitra . It differs from E. rosea by a wider stridulatory area and more strongly curved male cerci. The male cerci are similar to those of E. jitra , but in E. kutu the apical spine is broader. Both species have quite different phallus sclerites.

Description. Fastigium verticis narrow with approaching lateral margins, very faintly furrowed; separated from fastigium frontis by a gap. Pronotum narrow; disc with concave fore and convex hind margin; with medial carina in anterior area to principle transverse sulcus; paranota much longer than high; humeral sinus distinct. Tegmen narrow; radius sector rising before end of basal third ( Fig. 1 E).

Male. Stridulatory area of left tegmen in central area nearly parallel-sided ( Fig. 2 E). Stridulatory file on underside of left tegmen little angular, 0.92 mm long, with 3 large teeth scattered over more than basal two thirds (0.67 mm), starting remote from base of file and standing on a strong common socket, and 9 smaller teeth of decreasing size in less than apical third (0.25 mm) ( Fig. 3 H). Mirror on right tegmen roughly triangular with rounded angles and surrounding veins convex, 0.4 mm long and 0.39 mm wide; index length: width 1.03; with a small oval secondary mirror at rounded internal margin of tegmen ( Fig. 2 F). Tenth abdominal tergite with a short, weak, medial furrow before apical margin only; apical margin truncate. Epiproct triangular with medial furrow, at apex with a long membranous extension, arising from ventral surface. Cerci curved with subacute apical tooth ( Figs. 4 L–M). Subgenital plate after little more than basal third forming a narrow, straight, apical projection with less than apical quarter little curved up and split into two lobes ( Figs. 5 M–N). Phallus with a pair of conchate sclerites with serrate dorsal margin and a large, unpaired, medial sclerite with wide basal and laterally compressed apical area, in lateral view with little sinuate dorsal and ventral margins, apex truncate; apical area of dorsal margin serrate (Figs. H–J).

Female unknown.

Coloration. Brown, probably green when alive. Pronotum with black dots except in ventral area of paranota. Tegmen with brown or black dots over whole tegmen; in costal area only near base.

Measurements (1 male). Body w/wings: 37; body w/o wings: 16; pronotum: 4.5; tegmen: 30; tegmen width: 3.1; hind wing: 32; hind femur: 21.8 mm.

Etymology. Named after the type locality; noun in apposition.

Figures

FIGURE 1. Left tegmen of Elimaea (Poaefoliana) species: A, E. poaefolia (De Haan, 1842), syntype female; B, E. albimaculata sp. n. holotype male; C – D, E. rosea Brunner, 1878 [C, lectotype male; D, male from Poring]; E, E. kutu sp. n. holotype male; F, E. jitra sp. n. holotype male.

FIGURE 2. Stridulatory area of left (A – C, E, G, I, J, L) and right (D, F, H, K, M) male tegmen of Elimaea (Poaefoliana) species: A, E. poaefolia (De Haan, 1842) [specimen 19206 in NHMW]; B – D, E. rosea Brunner, 1878 [B, lectotype; C – D, male from Poring]; E – F, E. kutu sp. n. holotype; G – I, E. jitra sp. n. holotype; J – K, E. albimaculata sp. n. holotype; L – M, E. jacobsoni Karny, 1926 holotype. Abbreviations: mi, mirror; sv, stridulatory vein.

FIGURE 3. Male stridulatory file on underside of left tegmen of Elimaea (Poaefoliana) species: A, E. jacobsoni Karny, 1926 holotype; B – C, E. poaefolia (De Haan, 1842) [B, specimen 19206 in NHMW; C, paralectotype of E. rosea in SMTD]; D, E. albimaculata sp. n. holotype; E – F, E. rosea Brunner, 1878 [E, lectotype; F, male from Poring]; G, E. jitra sp. n. holotype; H, E. kutu sp. n. holotype. Figs B and E by C. Hemp.

FIGURE 4. Male cercus of Elimaea (Poaefoliana) species in roughly dorsal view (A, B, F, H, J, L, N, P); apex of cercus in roughly posterior view (C – E, G, I, K, M, O, Q). A – E, E. poaefolia (De Haan, 1842) [A, D, male syntype; B – C, paralectotype of E. rosea in SMTD; E, specimen 19206 in NHMW]; F – I, E. rosea Brunner, 1878 [F – G, lectotype; H – I, male from Poring]; J – K, E. albimaculata sp. n. holotype; L – M, E. kutu sp. n. holotype; N – O, E. jitra sp. n. holotype; P – Q, E. jacobsoni Karny, 1926 holotype.

FIGURE 5. Male subgenital plate of Elimaea (Poaefoliana) species in ventral view (A – D, F, H, K, M); do. in lateral view (E, I, L, N); do. apex of subgenital plate in lateral view (G, J). A – C, E. poaefolia (De Haan, 1842) [A, male syntype; B, paralectotype of E. rosea in SMTD; C, specimen 19206 in NHMW]; D, E. jacobsoni Karny, 1926 holotype; E – G, E. rosea Brunner, 1878 [E, lectotype; F – G, male from Poring]; H – J, E. albimaculata sp. n. holotype; K – L, E. jitra sp. n. holotype; M – N, E. kutu sp. n. holotype. Abbreviations: e, epiproct; ce, cercus; ps, phallus sclerite; sg, subgenital plate.