Elimaea (Poaefoliana) poaefolia (De Haan, 1842) De Haan, 1842

Ingrisch, Sigfrid, 2011, New taxa of Elimaeini (Orthoptera: Tettigoniidae: Phaneropterinae) from South East Asia, Zootaxa 2935, pp. 1-25 : 3-4

Elimaea (Poaefoliana) poaefolia (De Haan, 1842) comb. n.

Figs. 1 A, 2A, 3B–C, 4A–E, 5A–C, 6A–F, 8A–C

Locusta (Phaneroptera) poaefolia De Haan 1842 , Bijdrag. Kennis Orthopt.: 192

Elimaea poaefolia Brunner von Wattenwyl 1878, Verh. zool.-bot. Ges. Wien 28: 95 Elimaea ( Elimaea , poaefolia -Gruppe) poaefolia Karny 1926 , Treubia 9: 23

Elimaea ( Elimaea , poaefolia -group) poaefolia Ingrisch 1998 , Tijdschr. v. Entomol. 141: 70

Syntypes: Indonesia: 1 female, 1 male, Java (RMNH).

Material studied: Sunda Islands: 1 male [paralectotype of E. rosea Brunner , misidentification], Borneo ( SMTD). Indonesia: 1 male, West Java, Palabuan Ratu [6°58'S, 106°30'E], 1.i.–31.xii.1892, leg. H. Fruhstorfer, " Elimaea rosea Br. det. Br. v. W. | 19206." ( NHMW).

Diagnosis. Stridulatory area of male tegmen little but distinctly widened; stridulatory vein on dorsal side straight, on underside of left tegmen with regular teeth except at both ends; apex of male cercus with narrow acute spine; male phallus with a pair of large conchate sclerites and an unpaired large central sclerite. The female subgenital plate is longer than wide with the apex truncate in middle and a short angular lobe at both sides.

Description. Fastigium verticis slightly declining and constricted in circa middle of length, anterior half narrow, shallowly furrowed on dorsal surface; step-like descending to fastigium frontis. Pronotum long and narrow, with median carina; anterior margin broad, shallow-angularly excised in middle; posterior margin rounded. Paranota nearly twice as long as high; ventral margin slightly convex, humeral sinus distinct. Anterior tibia with four apical spurs (one at each angle) and with 4 dorso-external spines, no dorso-internal spines, 8 ventro-external spines, and 11 ventro-internal spines.

Male. Stridulatory area moderately widened with regularly rounded internal margin [in type damaged due to pinning-on]; stridulatory vein straight ( Fig. 2 A). Stridulatory file with circa 15–17 moderately large teeth and 6–8 very small and narrow teeth at base ( Figs. 3 B–C). Tenth abdominal tergite little prolonged; apical margin faintly concave at both sides, broadly subtruncate in middle. Epiproct long tongue-shaped with a median furrow in basal half. Cerci moderately curved, at apex rounded and provided with a sharp, narrow, faintly curved tooth ( Figs. 4 A– E). Subgenital plate narrow; little less than apical two thirds parallel-sided; about apical third divided into two lobes, finely spinulose on internal margins ( Figs. 5 A–C). Phallus with a pair of large conchate lateral sclerites with finely dentate dorsal and apical margins and a large, unpaired, compressed central sclerite with divided and laterally curved basal lobes, parallel-sided central area and obliquely ovate apical area, dorso-apical margin of latter densely and irregularly covered with minute denticles ( Figs. 6 A–E).

Female. Cerci curved, narrowing to subacute tip. Subgenital plate widening from base towards about apical third; there with rounded angles and narrowing towards apex; with weak medial carina; apex with two acute lobes and wide-rectangularly excised in between ( Figs. 8 A–B). Ovipositor elongo-falcate, regularly curved throughout; most of dorsal margin and apical area of ventral margin serrulate ( Fig. 8 C).

Measurements (2 males, 1 female [partly after Karny 1920]). Body w/o wings: male 16.5–17.0, female 20; pronotum: male 4.6–4.8, female 4.5; tegmen: male 28–30, female 35; tegmen width: male 2.5–3.0, female 4; hind femur: male 23, female 23; ovipositor: female 7 mm.

Discussion. The syntypes were already redescribed by Karny (1920), but the stridulatory apparatus and the male phallus had not been studied. The only exact locality information for this species is from the South coast of West Java. The male from Brunners' type series of E. rosea in SMTD labelled as from Borneo fully agrees with the male syntype of E. poaefolia . Further investigations will show if the old locality information is trustable and the species really occurs on both islands.

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.

FIGURE 6. Male phallus sclerites of Elimaea (Poaefoliana) species in about dorsal view (A, C, H – J, L); do. in oblique lateral view (B, D – G, K). A – F, E. poaefolia (De Haan, 1842) [A – B, male syntype; C – E, paralectotype of E. rosea in SMTD; F, specimen 19206 in NHMW]; G, E. rosea Brunner, 1878 lectotype; H – J, E. albimaculata sp. n. holotype; K – L, E. jacobsoni Karny, 1926 holotype.

FIGURE 8. Female subgenital plate of Elimaea (Poaefoliana) species in ventral view (A, D, G, J); subgenital plate and base of ovipositor in lateral view (B, E, K); " base of ovipositor " (H); female abdominal apex with ovipositor in lateral view (C, F, L, I). A – C, E. poaefolia (De Haan, 1842), female syntype; D – F, E. jitra sp. n. paratype; G – I, E. rosea Brunner, 1878 paralectotype; J – L, E. albimaculata sp. n. paratype. Abbreviations: bd, base of dorsal ovipositor valve; bv, do. of ventral valve; go, gonangulum; sg, subgenital plate.