Paulaudalna marginata, Delorme, Quentin, 2017

Delorme, Quentin, 2017, Description of four new genera and five new species of cicadas from New Caledonia (Insecta: Hemiptera, Cicadoidea, Cicadidae), Zootaxa 4243 (1), pp. 97-124 : 99-103

Paulaudalna marginata sp. nov.

( Figs. 1–6)

Material examined. Holotype male ( MNHN 19291 ) New Caledonia, Province Sud, La Foa Pocquereux, David Paulaud rec, 12/II/1998 ( MNHN) . One paratype male ( MNHN 19292 ) New Caledonia, Province Sud, Bourail Poé, Sylvie Cazères rec, 04/XII/2005 with light-trap, ( MNHN) . Other specimens. 5 males, New Caledonia, Province Sud, Boulouparis, Pic Ouitchambo , Quentin Delorme rec 23/I/2015, (2 specimens at MNHN, 1 specimen in Delorme personale collection, 2 specimens in Collection de Référence des Invertébrés Terrestres de Nouvelle- Calédonie – Xavier MONTROUZIER La Foa, IAC, Pocquereux Fruit Research Station , ( CXMNC)) .

Body measurements (in mm, first value refers to the holotype and second to the paratype). FL: 42.0, 45.0; FW: 16.1, 16.5; HW: 8.7, 9.3; HL: 2.3, 2.4; BL: 30.0, 32.5.

Description of male ( Figs.1–5). Head. Vertex yellowish with large pink ocellus; lateral ocelli surrounded by a black margin on posterior and lateral sides; antero-median ocelli surrounded by black posterior margin in their posterior parts. Epicranial suture yellowish with black spot on anterior part. Dorsal postclypeal area slightly convex and greenish to yellowish with scattered short golden hairs. Scape and supra-antennal plate yellowish to ocher, with a brown median line. Antennal flagella and pedicel ocher. Postclypeus yellowish, bearing ten brown prominent transversal grooves and becoming darker apically; postclypeal suture yellowish and deep. Anteclypeus yellowish with a brown heart-shaped macula medially and a roundish brown spot on each lateral side; lower part with brownish margin, covered by dense golden hairs. Rostrum with labrum and mentum ocher. Labium yellowish with brown tip. Apex of rostrum reaching mid trochanter. Gena and lorum ocher with dense and long golden hairs.

Thorax. Pronotum yellowish with black lateral and paramedian fissures. Pronotal collar and lateral parts entirely yellowish with dense short golden hairs. Mesonotum ocher to yellowish with three longitudinal black fasciae; median fasciae crossing the cruciform elevation and the metanotum; lateral fasciae running along sigilla. Scutal depression marked by circular black patch. Metanotum yellowish with long, dense golden hairs on lateral part. Wing groove yellowish. Opercula separated, as long as wide, pale yellowish, with scattered white hairs.

Wings. Forewings hyaline; venation yellowish to greenish; radial crossvein and radiomedial crossvein with brown infuscation; apical cells one to seven bearing round infuscation at apical margin. On hindwings, exterior margins of apical cells bearing a more or less continuous brown colour.

Legs. Fore femora yellowish with broad, dark brown longitudinal fasciae. Mid and hind femora yellow to medium brown, darker dorsally. Fore and mid tibiae yellowish, becoming darker apically. Hind tibiae pale brown. Fore and mid tarsi and claws dark brown.

Abdomen. Tergites almost uniformly brown, with small pale yellow posterior margins between tergites 3 to 8; covered by silver short pubescence. Sternites uniformly pale brown. Timbal broad, bearing five long ribs; long ribs 1 to 3 fused dorsally; long rib 4 and 5 shorter not extending ventrally; no intercalary ribs.

Genitalia. Pygofer anteriorly brown, grading to yellowish posteriorly; upper lobes not prominent, rounded; lower lobe indistinct; dorsal beak prominent, sharply pointed, and slightly curved in lateral view; pseudoparameres of aedeagus filiform, apically bifurcate.

Acoustic behavior. ( Fig. 6 ). Male calls at sunset, during about one hour. After each call, the male flies to another calling place. Each call is about 14 to 17 seconds long and composed of 13 to 16 phrases. Phrase duration and amplitude progressively decrease during the call. Each phrase consists of a long echeme composed of a regular succession of pulses emitted at a rate of about 130 per second, followed by a single echeme emitted 0.1 second later. All phrases cover frequencies from 2 to 14.5 kHz, with the main energy between 5 and 7 kHz and a peak amplitude at 6 kHz.

Description of female. Unknown

Distribution. West coast of central region of the Grande Terre of New Caledonia (Bouraille, La Foa, and Boulouparis countries) ( Fig. 31 ).

Derivation of name. “ marginata ” because of the brown spot around the wing margins.

Habitat and ecology. The population discovered in 2015 at Ouitchambo is located in dense bushy vegetation formation with Psidium guajava . No information on seasonality and peak period of emergence recorded.

Figures

FIGURE 6. Paulaudalna marginata sp. nov. New Caledonia, Province Sud, Boulouparis, Tribu de Ouitchambo, 23 / I / 2015. Graphic representation of a typical male calling song A: Oscillogram from a record of 16 s; B: oscillogram showing a complete phrase; C: Spectrogram of complete phrase; D: Power spectrum.

FIGURE 31. Distribution map of species.