Cardiodactylus javarere Otte, 2007

Depraz, Emilien, Tan, Ming Kai, Rahandra, Erlani Febrida, Ramandey, Eunice R. P. F. & Robillard, Tony, 2024, Taxonomy and calling songs of some species of Cardiodactylus (Gryllidae, Eneopterinae, Lebinthini) from New Guinea, Zootaxa 5551 (2), pp. 242-262 : 247

Cardiodactylus javarere Otte, 2007

( Figs 3 , 4 , 5A–C , 6A, 6B , 7A–C )

Cardiodactylus javarere Otte, 2007a: 354 — Otte, 2007b: 32 (species listed); Dong & Robillard, 2016: 242 (redescription).

New material examined. INDONESIA • 1♀, 1♂; Yapen I., Karopai, secondary forest near village; S01.85559 E136.19408, 56 m (GPS23Pa6); 21–23.ix.2023; adult in captivity; Daawia et al. leg.; KSP • 1 juvenile; same information as previous; 3.x.2023; TR23-147; Daawia et al. leg.; KSP.

Remarks. We describe the calling song for the first time.

Type locality. PAPUA NEW GUINEA, Daradae , S8°46’11.20”, E147°10’52.00” ( Dong & Robillard, 2016) .

Distribution. Northern part of New Guinea, from near Madang ( Papua New Guinea) to Jayapura region and Yapen Island ( Indonesia).

Juvenile. Distinctive black and white colouration in early instars.

Calling song ( Fig. 4 ). The calling song is made up of a complex echeme-sequence made up of two regions: Region I is composed of 47±24 regular echemes made up of 5 to 15 syllables; Region II is much longer and made up of three different patterns of echemes ( Table 2): Pattern 1 within Region II is similar to Region I, but includes only 2–4 echemes. Pattern 2 is a long echeme of 155±29 syllables, with a high amplitude at the beginning, decreasing in the middle and increasing again in the second half. Pattern 3 is a much shorter echeme made up of 80±4 syllables, with lower amplitudes and is made up of shorter syllables ( Table 2). The syllables in the different regions have a similar broad-band frequency spectrum. The bandwidth of the broad-band dominant frequency ranges between 8 and 30 kHz. The spectrum is made up two main peaks: between 14 and 18 kHz and between 22 and 24 kHz.

Figures

FIGURE 3. Cardiodactylus javarere Otte, 2007 male (A, B) and female (C, D) habitus in dorsal (A, C) and lateral (B, D) views. Scale bar: 2 cm.

FIGURE 4. Cardiodactylus javarere Otte, 2007 calling song: oscillograms of a series of calling songs (A), two regions of the calling song (B) and three patterns within Region II (C), spectrogram (D) and power spectrum (E) of a syllable.

FIGURE 5. Cardiodactylus javarere Otte, 2007a (A–C), Cardiodactylus minuta Bhowmik, 1981 (D–F) and Cardiodactylus nigris Bhowmik, 1981 (G–I): head and pronotum in dorsal view (A, D, G); face in anterior view (B, E, H); anterior part of body in lateral view (C, F, I). Scale bars: 2 mm.

FIGURE 6. Cardiodactylus javarere Otte, 2007a (A, B), Cardiodactylus minuta Bhowmik, 1981 (C, D) and Cardiodactylus nigris Bhowmik, 1981 (E) male (A, C, E) and female (B, D) FWs in dorsal view. Scale bars: 2 mm.

FIGURE 7. Cardiodactylus javarere Otte, 2007a (A–C), Cardiodactylus minuta Bhowmik, 1981 (D–F) and Cardiodactylus nigris Bhowmik, 1981 (G–I) male genitalia in dorsal (A, D, G), ventral (B, E, H) and lateral (C, F, I) views. Scale bars 1 mm.