Homoeogryllus tessellatus (Serville, 1838)

Zurawlew, Przemyslaw, Desutter-Grandcolas, Laure, Szymanski, Pawel & Herman, David Billy, 2020, New records of exotic crickets in Europe: Homoeogryllus species (Orthoptera: Gryllidea: Phalangopsidae), Journal of Orthoptera Research 29 (2), pp. 121-125 : 121

Homoeogryllus tessellatus (Serville, 1838) Figs 3 , 4

Observed material.-

Poland, Warsaw, Łowicka Street, 17-23 VIII 2016, 1♂, M. J. Gorazdowski leg., L. Desutter-Grandcolas det., MNHN.

Remark.-

The male was found in a snake terrarium. Presumably, the vector was a bromeliad Neoregelia carolinae (Beer) L.B. Smith bought in a garden center. The species is native to Ivory Coast, Guinea, and Sierra Leone ( Desutter 1985).

Stridulation description .-

The stridulation was mostly continuous with repeated creaks of roughly the same length of 0.3 s (Fig. 4a ). The beginning of each series consisted of only 3-5 creaks increasing in length (Fig. 4c ). The fundamental frequency of stridulation was around 5 kHz (Fig. 4b ). The shortest recorded stridulation was 9.3 s and the longest 35.3 s.

Figures

Figure 3. Homoeogryllus tessellatus (Serville, 1838) male observed in Warsaw (Poland).

Figure 4. Stridulation of Homoeogryllus tessellatus (Serville, 1838) male from Warsaw (Poland): a. spectrogram of recorded stridulation; b. spectrogram of one stridulation series in higher resolution of time domain; c. spectrogram of the beginning of stridulation series with three units (syllables) shown. The oscillograms are shown below and the relative amplitude scales (in dB) on the right of the spectrograms. Abbreviations: dB, decibel; s, second; kHz, kilohertz.