Elimaea (Poaefoliana) rosea Brunner

Ingrisch, Sigfrid, 2011, New taxa of Elimaeini (Orthoptera: Tettigoniidae: Phaneropterinae) from South East Asia, Zootaxa 2935, pp. 1-25 : 4-5

Elimaea (Poaefoliana) rosea Brunner v. Wattenwyl, 1878 comb. n.

Figs. 1 C–D, 2B–D, 3E–F, 4F–I, 5E–G, 6G, 7A–D, 8G–I

Elimaea rosea Brunner von Wattenwyl 1878, Verh. zool.-bot. Ges. Wien 28: 92, 102 Elimaea ( Elimaea , poaefolia -Gruppe) rosea Karny 1926 , Treubia 9: 23

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

Lectotype (male): Borneo, Boucard ded. Coll. Br.v.W. 10.069 (NHMW); here designated.

Material studied: Indo-Malaysia: 1 female (paralectotype), Borneo, Boucard ded. ( NHMW); 1 male, East Malaysia, Sabah: Mt. Kinabalu, Poring, 500–700 m [6°5'N, 116°33'E], 10.v.1997, leg. W.A. Nässig ( SMF); 1 male, East Malaysia, Sabah: Sandakan District, Rumidi Estate, River Labuk [5°54'N, 117°30'E], 15–45 m, 14– 30.ix.1973, leg. C.J.M. Pruett ( BMNH).

Diagnosis. Characterised by the stridulatory area of the left tegmen that is narrower than in all other species described so far and with a sinuate stridulatory vein on dorsal side. On the underside of the tegmen the stridulatory vein has three large and few small teeth. It also differs from E. poaefolia by the apex of the male cercus, which carries a little compressed and thus broader, uncurved tooth. The female differs by the subgenital plate that has the apex with a short obtuse angular lobe in middle and long spiniform lobes at both sides. From the two species with similar arrangement of the teeth on the stridulatory file it differs as follows: From E. jitra it differs by a smaller mirror on right tegmen and the different shape of the phallus sclerites. From E. kutu it differs by narrower stridulatory area with different course of stridulatory vein on left tegmen and smaller mirror on right tegmen, and by the central phallus sclerite being of different shape and armation. From both E. jitra and E. kutu it differs by the less strongly curved cerci.

Description. Fastigium verticis elongate, at base V-shaped, at tip very little curved up. Pronotum long and narrow; disc rounded, apical area flat and with medial carina; paranota about two times longer than high; humeral sinus strong. Anterior femur phasmid-like curved at base. Anterior tibia with tympana conchate at both sides.

Male. Stridulatory area of left tegmen little projecting ( Fig. 2 B–C). Stridulatory file on underside of left tegmen little sinuate; with circa 3 large and 7–11 medium sized to small teeth; teeth one, two and three from base spaced from each other with low hyaline indications of ripples in the intervals ( Fig. 3 E–F). Tenth abdominal tergite with apex truncate. Epiproct moderately elongate with median furrow; more than apical third flattened, obtusely rounded, setose. Cerci gradually curved, at apex tapering into a compressed acute spine ( Fig. 4 F–I). Subgenital plate long and narrow; about apical two thirds nearly parallel-sided; about apical fourth to third divided into two lobes with numerous spinules on internal margins ( Fig. 5 E–G). Phallus with a pair of conchate sclerites with dorsal margin serrate and an unpaired central sclerite with wide, roughly triangular base and compressed apex with dentate margin ( Fig. 6 G, 7A–D).

Female. Subgenital plate roughly rhombic with median carina; basal margin angularly rounded; apical-lateral angles with long thin appendages ( Fig. 8 G). Ovipositor elongo-falcate, strongly curved near base, afterwards nearly straight; with apical areas of dorsal and ventral margins finely serrulate ( Fig. 8 I).

Coloration. Green when alive, can become yellowish brown in museum specimens. Antennae annulated. Pronotum with black dots. Tegmen green; along hind margin with black cells and light veinlets; a few scattered black dots also in medial field. Hind wings with veins and veinlets light rose except near apex; projecting area green.

Measurements (3 males, 1 female). Body w/wings: male 34–37, female 41; body w/o wings: male 15–17, female 24; pronotum: male 3.8–4.2, female 4; tegmen: male 26–29, female 33; tegmen width: male 2.5–3.0, female 3.0; hind wing: male 29.5–31.0, female 36; hind femur: 20.0–21.5, female 24.5; ovipositor: female 7.5 mm.

Discussion. For the description of E. rosea, Brunner (1878) had probably seen two males and one female as he described male and female and gives as depositories "c.m. Nr. 10069 and Mus. Dresden" and there are one male and one female in NHMW and one male in SMTD that could belong to the type series. Under measurements he gives the values without variation; thus he probably measured only one male and female each. As locality information, the male in SMTD carries the hand-written label "Borneo", while the male (Nr. 10069) and female in NHMW the printed label "Coll. Br.v.W. Borneo Boucard ded.". In NHMW there is another male from Brunners' collection (Nr. 19206 from Palabuan Java) that was identified by Brunner as E. rosea . But as it was collected after the description, it cannot be part of the type series. A re-examination of the types gave the results that the male in SMTD and the male 19206 are not conspecific with the male 10069, but they agree with the syntype male of E. poaefolia in RMNH. Details of the stridulatory apparatus, cerci and phallus are figured for comparison of all three specimens ( Figs. 2 A–B, 3B–C, E, 4B–C, E–G, 6C–G). It becomes thus necessary to select a lectotype. To avoid taxonomic change, the male 10069 in NHMW is designated here as lectotype of E. rosea as it differs specifically from the male syntype of E. poaefolia and is explicitly mentioned in Brunners' description. E. rosea is a Bornean species while E. poaefolia comes from West Java. A problem is the labelling of the specimen in SMTD as being from "Borneo". As there is no additional information on the locality or the collector, the locality information should be verified.

One male and two females ex coll. Ouwens Soekaboumi in MBBJ identified by H. Karny with question mark as E. rosea have the subgenital plates as typical for E. chloris (De Haan, 1842) . The abdomen of the male is in extremely bad condition that does not allow further study. The tegmina of those specimens are as wide as in E. chloris , not as narrow as in Poaefoliana species.

Karny (1926b) reports E. rosea from Perak (Batang Badang, Jor Camp). As three new species of Poaefoliana are described below from West Malaysia, it is doubtful, if the specimens reported from Perak really belong to E. rosea . Most Poaefoliana species are superficially similar, thus a re-examination of these specimens would be necessary to find out to which species they really belong to.

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.