01377nas a2200229   4500008004100000245006100041210005800102300001200160490000700172520076700179653001100946653001400957653001100971653001500982653002000997653002101017653001801038100002001056700002501076700002101101856002501122       2018                        eng d00aGryllacrididae (Orthoptera: Ensifera) in southern Africa0 aGryllacrididae Orthoptera Ensifera in southern Africa  a183-1860 v273 a<p>Although Gryllacrididae are a largely southern hemisphere insect family, they are relatively poorly represented in southern Africa, with three genera (Ametroides Karny, 1928, Glomeremus Karny, 1937, and Stictogryllacris Karny, 1937) and ten species and subspecies recorded from the region. All Ametroides and Glomeremus species are wingless while those of Stictogryllacris are long-winged. All species are arboreal and nocturnal, returning by day to characteristically silk-spun shelters between leaves. Here, we present a diagnosis, key to genera, and high-quality images to assist in identification of Gryllacrididae. By compiling all published information in one place, we hope to facilitate future researchers to investigate this poorly known group.</p>
10aaptery10adiagnosis10agenera10amacroptery10asilk production10aStenopelmatoidea10ataxonomic key1 aScholtz, Clarke1 aBazelet, Corinna, S.1 ade Klerk, Hennie  u10.3897/jor.27.2964502451nas a2200229   4500008004100000022001400041245012100055210006900176260001600245520168800261653001201949653002201961653001501983653002001998653002802018653003002046100002302076700002402099700002102123700002202144856005502166       2018                        eng d  a0892-755300aSubstrate-Borne Vibration Mediates Intrasexual Agonism in the New Zealand Cook Strait Giant Weta (Deinacrida rugosa)0 aSubstrateBorne Vibration Mediates Intrasexual Agonism in the New  cDec-11-20183 a<p>Substrate-borne vibrational communication is a common mode of information transfer in many invertebrate groups, with vibration serving as both primary and secondary signal channels in Orthopterans. The Cook Strait giant weta, Deinacrida rugosa (Orthoptera: Anostostomatidae), is an endangered New Zealand insect whose communication system has not been previously described. After field observations of intraspecific interactions in D. rugosa provided preliminary evidence for substrate-borne vibrational communication in the species, we sought to identify the following: vibrational signal structure, the mechanism of signal production, whether signal production is a sexually dimorphic trait, whether substrate-borne signals encode information regarding sender size, the primary social context in which vibration is utilized and finally, the function of vibrational signaling in the species. We used laser Doppler vibrometry to show that D. rugosa males produce low frequency (DF&thinsp;=&thinsp;37.00&thinsp;&plusmn;&thinsp;1.63 Hz) substrate-borne vibrations through dorso-ventral tremulation. Rarely produced by females, male signals appear to target rivals while both are in the direct physical presence of a female. Tremulatory responses to playbacks were only produced by males in male-male-female trial contexts, and neither sex exhibited walking vibrotaxis to playback signals, indicating that substrate-borne vibrational signals are not likely a component of the courtship repertoire. While we found that vibrational signal structure was not closely related to signaler size, males that initiated male-male signaling bouts held a significant advantage in contests.</p>
10aAgonism10aDeinacrida rugosa10agiant weta10aseismic signals10asubstrate-borne signals10avibrational communication1 aHoward, Daniel, R.1 aSchmidt, Ashley, P.1 aHall, Carrie, L.1 aMason, Andrew, C.  uhttp://link.springer.com/10.1007/s10905-018-9700-2