Rouxalna rouxi (Distant, 1914), 2018

Delorme, Quentin, 2018, Germalna, a new genus for the New Caledonian cicada previously assigned to the genus Melampsalta Kolenati, plus a complement to the description of the genus Rouxalna Boulard, with the description of two new species (Insecta: Hemiptera, Cicadoidea, Cicadidae), Zootaxa 4377 (1) : -

Rouxalna rouxi (Distant, 1914)

( Figs. 1 & 15 )

Diagnosis. Among Rouxalna species, R. rouxi can be distinguished from R. scabens sp. nov., by the larger size (body length> to 17 mm); the long ribs 1 and 2 which are free ventrally ( R. scabens has ribs 1 and 2 free fused) and ribs 1 to 3 fused dorsally ( R. rouxi has the long rib 1 to 4 fused dorsally). Rouxalna villosa sp. nov., differs by the presence of dense long black hair.

Song patterns. The male calling song ( Fig. 15 ) is formed by a regular succession of phrases lasting between 1.5 and 1.7 s; each phrase is composed by 22 to 26 syllables, emitted at a rate of 14 per second; each syllable is composed by 4 echemes. Frequency ranges from 5,000 to 20,000 Hz. The dominant frequency is located between 7,000 and 13,000 Hz and the maXimum of power is located at 10,500 Hz.

Figures

FIGURE 1. A: Germalna germaini comb. nov., AEDEAgUS IN DORSAL VIEW (DRAWINg: DELPHINE CURy); B: Germalna germaini comb.nov., AEDEAgUS INLATERAL VIEW (DRAWINg:DELPHINE CURy).

FIGURE 15. Rouxalna rouxi (DISTANT,1914) GRAPHIC REPRESENTATION OF A TyPICAL MALE CALLINg SONg.A) OSCILLOgRAM OF A RECORD OF 8 SECONDS.B) OSCILLOgRAM OF A PHRASE FORMED By 25 SyLLABLES.C) SPECTROgRAM OF A1.6 S SEqUENCE.D) POWER SPECTRUM.