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Ent22 4 255 257 Benediktov.Pmd Russian Entomol. J. 22(4): 255257 © RUSSIAN ENTOMOLOGICAL JOURNAL, 2013 Vibrational signals of the pygmy grasshoppers males (Orthoptera: Tetrigoidea) from Laos and Southern Vietnam Âèáðàöèîííûå ñèãíàëû ñàìöîâ òåòðèãèä (Orthoptera: Tetrigoidea) èç Ëàîñà è Þæíîãî Âüåòíàìà A.A. Benediktov À.À. Áåíåäèêòîâ Moscow State University, Biology Faculty, Department of entomology, Moscow 119991, Russia. E-mail: entomology@yandex.ru Ìîñêîâñêèé ãîñóäàðñòâåííûé óíèâåðñèòåò, Áèîëîãè÷åñêèé ôàêóëüòåò, êàôåäðà ýíòîìîëîãèè, Ìîñêâà 119991, Ðîññèÿ. KEY WORDS: Orthoptera, Tetrigoidea, Paratettix, Bolivariettix, Criotettix, vibrational signals. ÊËÞ×ÅÂÛÅ ÑËÎÂÀ: Orthoptera, Tetrigoidea, Paratettix, Bolivariettix, Criotettix, âèáðàöèîííûå ñèãíàëû. ABSTRACT. Vibrational signals of the males of Europe are described by our colleagues in recent years Paratettix hirsutus Brunner-Wattenwyl, 1893 (Tetrigi- [Pushkar, 2009; Koèárek, 2010; Koèárek at al., 2011]. nae), Bolivaritettix chinensis (Hancock, 1912) (Metro- Description of vibrational signals for three species dorinae) and Criotettix bispinosus (Dalman, 1818) (Sce- from Laos and South Vietnam are given below for the limeninae) are described in first time. Oscillogramms first time. Each of the three species is belonging to three all species and sonogram of P. hirsutus are presented. different subfamilies: Tetriginae, Metrodorinae and Sce- limeninae. All signals are produced by middle legs only. ÐÅÇÞÌÅ. Âïåðâûå îïèñàíû âèáðàöèîííûå ñèã- íàëû ñàìöîâ Paratettix hirsutus Brunner-Wattenwyl, Materials and methods 1893 (Tetriginae), Bolivaritettix chinensis (Hancock, 1912) (Metrodorinae) è Criotettix bispinosus (Dalman, 1818) (Scelimeninae). Ïðâèåäåíû èõ îñöèëëîãðàì- Vibrational signals Tetrigidae are studied from the ìû è ñîíîãðàììà P. hirsutus. following geographical points: Laos, Vang Vieng, IX 2009 (V.A. Gromenko) (hereinafter referred to Vang Vieng.); South Vietnam, Park Kattien, 2024 XI 2007 Introduction (A.A. Polilov) (hereinafter Kattien). Vibrations are recorded a minidisk-recorder Sony Vibrational signals of 9 species pygmy grasshoppers MD Walkman MZ-RH910 (2020000 Hz) with piezo- from Russia, Ukraine and Kyrgyz belonging to the nomi- electric adapter (3012000 Hz), the head of the adapter native subfamily Tetriginae (Orthoptera, Tetrigoidea, contacted with cardboard plates 75x90 mm slightly Tetrigidae) are registered and described by the author springing. Insects were placed on the cardboard. [Benediktov, 1998; 2005]. Tetrigids produce species-spe- The following terminology was used: the phrase cific vibration by middle legs, and also use body tremula- a complex signal of the series and pulses; series a tion and disclosure of wings, that is considered to be non sequence of pulses, separated from other similar series species specific vibration. These signals and their combi- with long pauses; pulses elementary parcels, char- nations can be complex-organized. Also vibrational sig- acterized by fast growing and rapidly decreasing am- nals of three species Tetrigidae from Eastern and Western plitude. Table. Characteristics of the vibrational signals of the pygmy grasshoppers. Òàáëèöà. Õàðàêòåðèñòèêè âèáðîñèãíàëîâ òåòðèãèä. Duration of series, Pulses number in Repetition period of Pulses number after Species of Tetrigidae s series pulses, ms series Paratettix hirsutus 0.25 510 2050 14 Bolivaritettix chinensis 1.842.26 1827 4472 Criotettix bispinosus 0.811.89 1331 5178 256 A.A. Benediktov Signal descriptions consist of a series and several pulses. Subfamily Metrodorinae Subfamily Tetriginae Bolivaritettix chinensis (Hancock, 1912) Paratettix hirsutus Brunner-Wattenwyl, 1893 MATERIAL: # (Kattien). Temperature during recording MATERIAL: # (Vang Vieng). Temperature during recording +29 +31°. of +23 +25°. The signals of the single male (Figs 57; Table) Vibrational signals of the single male (Figs 14; represented by single series. After emission such series Table) is complex phrase with duration 316515 ms and male fell silent for a long time. 2 3 1 2 s 2 3 500 ms 4 7 5 6 2 s 7 500 ms 10 8 9 2 s 10 500 ms Figs 110. Vibrational signals of pygmy grasshoppers males: 14 Paratettix hirsutus; 57 Bolivaritettix chinensis; 810 Criotettix bispinosus; 13, 510 oscillogramms; 4 sonogram. Ðèñ. 110. Âèáðàöèîííûå ñèãíàëû ñàìöîâ òåòðèãèä: 14 Paratettix hirsutus; 57 Bolivaritettix chinensis; 810 Criotettix bispinosus; 13, 510 îñöèëëîãðàììû; 4 ñîíîãðàììà. Vibrational signals of the pygmy grasshoppers males 257 Subfamily Scelimeninae more complex and diverse than we assumed while sig- nals of species from the territory of Russia, and Eastern Criotettix bispinosus (Dalman, 1818) and Western Europe. MATERIAL: # (Kattien). Temperature during recording +22 +26°. ACKNOWELEDCEMENTS. I sincerely grateful to A.A. The signals of the single male (Figs 810; Table) are Polilov and V.A. Gromenko (Moscow) for the collection and close to those of the previous species, and also repre- delivery of live insects in Moscow. My special gratitude to sented as single series. After reproduction of such series S.Y. Storozhenko (Vladivostok) for determination of the male fell silent for a long time too. pygmy grasshoppers species. References Discussion Benediktov A.A. 1998. Acoustic communication of tetrigids of Analysis of vibration signals of Tetrigoidea represen- genus Tetrix (Orthoptera, Tetrigidae) // Entomol. Rev. Vol.78. P.892895. tatives of subfamilies Metrodorinae (B. hinensis) and Benediktov A.A. 2005. Vibratory signals in the family Tetrigidae Scelimeninae (C. bispinosus) from South-East Asia shows (Orthoptera) // Proc. Rus. Ent. Soc. Vol.76. P.131140 [in that they are close to those of the Palaearctic species of Russian]. the subfamily Tetriginae (Tetrix spp.) [Benediktov, 2005]. Koèárek P. 2010. Substrate-borne vibrations as a component of intraspecific communication in the groundhopper Tetrix ceper- But unexpectedly signals of the representative of the oi // Journal of Insect Behavior. Vol.23. No.5. P.348363. nominotypical subfamily Tetriginae (P. hirsutus) are Koèárek P., Holua J., Grucmanová S. & Musiolek D. 2011. Biology complicated with simultaneously frequency and am- of Tetrix bolivari (Orthoptera: Tetrigidae) // Cent. Eur. J. Biol. plitude-modulated vibration signals. This finding shows Vol.6. No.4. P.531544. Pushkar T.I. 2009. Tetrix tuerki (Orthoptera, Tetrigidae): distribution that the organization of vibrational communication in in Ukraine, ecological characteristic and features of biology // tropical pygmy grasshoppers can be arranged much Vestnik zoologii. Vol.43. No.1. P.1528..
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