identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
DE1AD619FFD6F56AC96978CCFA9D0D43.text	DE1AD619FFD6F56AC96978CCFA9D0D43.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Soliperla campanula (Jewett 1954)	<div><p>Soliperla campanula.</p> <p>Sixty-two signals were obtained from two, 3-day old females at 24°C and 60 FTC. Light finger tapping near the recording chamber induced all their answers. The two females produced signals with average individual intervals gradually increasing from 22.4 ms for interval 1 (i1) to 28.4 ms at interval 10 (i10). Total average beat count per answer and overall average intervals were 6.2 ± 2.7 and 25.4 ± 2.5 ms (Fig. 1, Table 1). There were 8 mode beats per signal and average answer duration was 133.3 ± 73.6 ms.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFD6F56AC96978CCFA9D0D43	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFD2F56ECAD97AB9FD1F0BC2.text	DE1AD619FFD2F56ECAD97AB9FD1F0BC2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Isoperla tilasqua	<div><p>Isoperla tilasqua.</p> <p>Seventy-one and eight signals were obtained from one, 1-day old male and female, respectively, at room temperature and normal incandescent light near a window. The male and the female produced 2-way duets either with the female answer following the call (N=3) or with interspersed answer beats during the male’s 5 th (N=2) or 6 th (N=3) beat intervals. The male called with signals of 6 mode beats (6.1 ± 1.0); with intervals of 168.8 ± 8.3 ms (Fig. 5, Table 1). The male’s average individual intervals gradually decreased from 174.6 ms (i1) to 164.5 ms (i4) and then gradually increased to 169.9 ms (i7) (Table 2). The beat count of female answer signals was always 1 and the ♂ - ♀ exchange interval was 118.2 ± 4.5 ms for sequenced and overlapped duets.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFD2F56ECAD97AB9FD1F0BC2	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFDEF562CAD97FADFAB80D95.text	DE1AD619FFDEF562CAD97FADFAB80D95.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Isoperla sobria OR 2004	<div><p>Isoperla sobria.</p> <p>This species from a new location was analyzed individually during 2001 and 2004. A total of 99 and 20 signals were obtained from two 3-11 day old males and females, respectively. Recording occurred at room temperature and normal incandescent light in 2001 and 23–24°C and 84 FTC in 2004. In both years, males and females produced 2-way sequenced signals with either the female answer signal following the call (N=12), or with the beginning answer beats interspersed within the males 2 nd (N=1), 3 rd (N=3), 4 th (N=3) and 5 th (N=1) interval. In 2001, the male called with 4 mode beats (3.7 ±0.8); with intervals of 159.1 ± 7.2 ms and in 2004, with 6 mode beats (5.2 ± 1.0); with intervals of 151.1 ± 5.8 ms (Fig 11, Table 3). The 2001 average individual intervals gradually decreased from 162.4 ms (i1) to 156.1 ms (i2), then increased to 163.1 ms (i4) (Table 4). The 2004 average individual intervals gradually decreased from 152.4 ms (i1) to 147.7 ms (i2), then increased to 154.6 ms (i6) (Table 4). The 2001 mode and mean number of beats per female answer signal were 1 and 1.1 ± 0.2; beat interval was 62.9 ms (N=1). The 2001 ♂ - ♀ exchange interval was 99.8 ± 5.6 ms for sequenced and overlapped duets. The 2004 female answer signals contained only a single interspersed beat and the ♂ - ♀ exchange interval was 112.8 ± 4.0 ms. These results agree well within reasonable expected variation, with those of Sandberg and Stewart (2003) and do not suggest a new dialect.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFDEF562CAD97FADFAB80D95	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFDBF567CAD97845FE7B0A6E.text	DE1AD619FFDBF567CAD97845FE7B0A6E.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pteronarcys dorsata MS 2000	<div><p>Pteronarcys dorsata.</p> <p>Fifty-one and six signals were obtained from one, 2–3-day old male and female, respectively, at 24°C and 65 FTC. The male and female of this species produced 2-way sequenced signals with either the female answer following the call (N=13), or with the answer beats interspersed within the call, beginning during the male’s 4 th (N=3), 5 th (N= 13) and 6 th (N=6) interval. The male called with signals of 6 mode beats; with intervals of 251.9 ± 9.6 ms (Fig. 13, Table 3). His average individual intervals gradually decreased from 258.3 ms (i1) to 241.6 ms (i6), the last interval increased to 245.6 ms (N=2) (Table 4). Mode and mean beats per female signal were 5 and 4.9 ± 0.8; with intervals of 359.7 ± 45.9 ms. The ♂ - ♀ exchange interval was 141.1 ± 85.5 ms for sequenced and overlapped duets.</p> <p>The results here coincide well with those of Stewart et al. (1982), with slight differences probably attributed to variation in environmental inputs rather than a new dialect. We add the interspersed female answer signal to the description of this species signaling.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFDBF567CAD97845FE7B0A6E	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFD2F56ECAD97CF2FE4E061A.text	DE1AD619FFD2F56ECAD97CF2FE4E061A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pteronarcys scotti VA 2001	<div><p>Pteronarcys scotti.</p> <p>Fifty-one and six signals were obtained from one, 6–11 day old male and female, respectively, at 24°C and 70 FTC. The male and the female produced 2-way duets either with the female answer following the call (N=3) or with interspersed answer beats during the male’s 2 nd (N=1), 3 rd (N=1), or 5 th (N=1) beat intervals. The male called with signals of 9 mode beats (8.1 ± 2.2); with intervals of 600.9 ± 42.1 ms (Fig. 6, Table 1). The male’s average individual intervals gradually increased from 538.0 ms (i1) to 655.2 ms (i11) (Table 2). Mode and mean number of beats per female answer signal were 5 and 5.7 ± 1.0; mean beat interval was 198.9 ± 47.5 ms. The ♂ - ♀ exchange interval was 361.6 ± 189.5 ms for sequenced and overlapped duets.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFD2F56ECAD97CF2FE4E061A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFD2F56EC969783AFAB30D42.text	DE1AD619FFD2F56EC969783AFAB30D42.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Perlinella drymo (Newman 1839)	<div><p>Perlinella drymo.</p> <p>Forty-seven and 37 signals were obtained from one, 1-day old male and female, respectively, at 24°C and 70 FTC. The male and female produced 2-way duets (N=36) and a new 3-way exchange (N=1), consisting of a male call, female answer, and male response following the answer. Previously, Zeigler and Stewart (1977) reported this species with only a 2-way vibrational communication. Males consistently called with 3beat signals containing a long 1 st interval (92.3 ± 1.4 ms) and a short 2 nd interval (26.9 ± 3.2 ms) (Fig. 7, Tables 3–4). The female answer was a single beat and followed the last male call beat by 138.0 ± 5.1 ms. The male response signal followed the female answer (♀ - ♂ exchange interval) by 181.9 ms and contained 10 beats with intervals of 28.3 ± 2.3 ms.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFD2F56EC969783AFAB30D42	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFD6F56AC9697A97FB5E0BEE.text	DE1AD619FFD6F56AC9697A97FB5E0BEE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Isoperla muir Szczytko & Stewart, Muir Creek 2002	<div><p>Isoperla muir.</p> <p>Two hundred thirty-two and two signals were obtained from eight and one, 1–4 day old males and female, respectively, at 24°C and 62 FTC. Males and the female produced 2-way sequenced duets with no female interspersed answers. The eight males called with signals of 9 mode beats (10.5 ± 2.0) with intervals of 48.1 ± 3.2 ms (Figs. 2A–B, Table 1). Their average individual intervals were variable and gradually increased from 46.5 ms (i1) to 56.4 ms (i16) (Table 2). These intervals (i2, i4, i6, i10, i12) decreased slightly from their previous intervals, but overall fit into the gradually increasing pattern. Range and mean number of beats per female answer signal were 6–7 and 6.5 ± 0.7; mean beat interval was 62.8 ± 7.8 ms. The time interval between the last male call beat and the first female answer beat (♂ - ♀ exchange interval) was 131.6 ± 21.3 ms.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFD6F56AC9697A97FB5E0BEE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFD6F56AC9637F16FBA509DC.text	DE1AD619FFD6F56AC9637F16FBA509DC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Isoperla rainera Jewett, W. Fork Salmon River 2002	<div><p>Isoperla rainera. Fifty-five and 32 signals were obtained from four and two, 1–5 day old males and females, respectively, at 24°C and 62 FTC. Males and females produced 2-way sequenced duets with no female interspersed answers. The four males called with signals of 13 mode beats (13.5 ± 2.0); with intervals of 94.0 ± 19.8 ms (Figs. 3A–B, Table 1). Their average individual intervals within calls decreased from 138.7 ms (i1) to 76.2 (i16) (Table 2). Mode and mean number of beats per female answer signal were 9 and 13.8 ± 6.4; mean beat interval was 58.3 ± 25.9 ms. The ♂ - ♀ exchange interval was 230.9 ± 95.2 ms.</p> </div>	http://treatment.plazi.org/id/DE1AD619FFD6F56AC9637F16FBA509DC	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFD2F56ECAD979F3FD8A0D8A.text	DE1AD619FFD2F56ECAD979F3FD8A0D8A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Isoperla rougensis	<div><p>Isoperla rougensis.</p> <p>One hundred twenty-eight and 111 signals were obtained from one, 1-day old male and female, respectively, at room temperature and normal incandescent light near a window. The male and the female produced 2-way duets either with the female answer following the call (N=78) or with interspersed answer beats during the male’s 3 rd (N=1), 5 th (N=5) or 6 th (N=27) beat intervals. The male called with signals of 7 mode beats (6.9 ± 0.3); with intervals of 37.2 ± 3.2 ms (Fig. 3 –B, Table 1). The male’s average individual intervals gradually increased from 31.6 ms (i1) to 39.5 (i5), the last interval decreased to 38.9 ms (N=117) (Table 2). Mode and mean number of beats per female answer signal were 7 and 6.5 ± 1.7; mean beat interval was 40.8 ± 7.2 ms for sequenced and overlapped duets. The ♂ - ♀ exchange interval was 27.9 ± 27.5 ms. A split-channel view (Fig. 3B), revealed overlapped and interspersed female beats during the 5 th and 6 th call intervals.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFD2F56ECAD979F3FD8A0D8A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFDEF567C9697A9CFD8F0F15.text	DE1AD619FFDEF567C9697A9CFD8F0F15.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Isoperla quinquepunctata CO 1999	<div><p>Isoperla quinquepunctata.</p> <p>One hundred seven and seventy-eight signals were obtained from one, 1-day old male and female respectively, at 21°C and normal incandescent lighting. The male and female produced long signals or “symphonies” (Szczytko and Stewart 1979) of repeating 2-way sequences (Range: 2–9), with either the typical female single answer beat following the call (N=69) (Fig. 12A), or with her answer beat(s) interspersed within the 1 st, 3 rd, 4 th, 6 th, 8 th, 11 th, 13 th or 15 th (N=2) male interval (Fig. 12B, first underlined duet). The male called with signals of 7 mode beats; with intervals of 173.6 ± 11.4 ms (Table 3). The average individual call intervals gradually decreased from 179.9 ms (i1) to 171.0 ms (i6), remained fairly uniform until (i15), then increased to 190.8 ms (i20) (Table 4). Mode and mean beats per female signal were 1 and 1.0 ± 0.2; mean beat interval was 924.5 ± 254.0. The ♂ - ♀ exchange interval was 98.0 ± 5.2 ms for sequenced and overlapped duets.</p> <p>In our analyses, we treated the multiple 2-way sequences and overlapped duets individually, instead of the entire “symphony” (underlined duets, Figs. 12A–B). These duets were separated from one another by consistently longer intervals (279.5 ± 62.4 ms) than typical interbeat call intervals (173.6 ± 11.4 ms).</p> <p>These results are consistent with Szczytko and Stewart (1979) in terms of general signal description and beats, but differ considerably in beat intervals (Table 5). We propose that our consistently larger overall-mean-interval differences were due to the inconsistencies between their oscilloscope calibration and our computer, explained above under I. phalerata.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFDEF567C9697A9CFD8F0F15	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFD2F562C9697E9CFE4E0CB8.text	DE1AD619FFD2F562C9697E9CFE4E0CB8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Isoperla bifurcata Szczytko & Stewart, Oak Burn Creek, Corvallis, Benton Co., Oregon 1999	<div><p>Isoperla bifurcata.</p> <p>One hundred thirty-six and 130 signals were obtained from two and one, 2–8 day old males and female, respectively, at 23°C and 65 FTC. Males and females produced 2-way sequenced signals with female answer signals either following the male call (N=48) or with interspersed answer beats beginning during the male’s 4 th (N=15), 5 th (N=42), 6 th (N=24) and 7 th (N=1) interval. The two males called with signals of 6 mode beats (6.2 ± 0.8); with intervals of 50.2 ± 5.7 ms (Fig. 9, Table 3). Their average individual intervals gradually decreased from 54.5 ms (i1) to 45.4 ms (i6), then increased to 58.2 ms (i9) (Table 4). Mode and mean number of beats per female answer signal were 3 and 3.9 ± 2.5; mean beat interval was 50.0 ± 10.0 ms. The ♂ - ♀ exchange interval was 131.6 ± 21.3 ms for sequenced and overlapped duets.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFD2F562C9697E9CFE4E0CB8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFD2F56EC9697AE1FABC0994.text	DE1AD619FFD2F56EC9697AE1FABC0994.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Hydroperla crosbyi TX 2002	<div><p>Hydroperla crosbyi.</p> <p>Eighty-four and 60 signals were obtained from four and three, 1–5 day old males and females, respectively, at 23°C and 58 FTC. Males and the females produced 2-way (N=56) and 3-way exchanges (N=4). The four males consistently called with two grouped (Bi-grouped) signals. The first group’s range in beat count from 2–4 contains one less and more than previously described by Zeigler &amp; Stewart (1985). Treating the two call-groups separately, the first contained 3 mode beats (3.0 ± 0.4); with intervals of 45.8 ± 16.6 ms and the second group had 4 mode beats (3.6 ± 0.5); with intervals of 47.4 ± 5.0 ms. The intergroup interval between these groups was 157.7 ± 29.8 ms Overall, males called with two groups containing 7 mode beats (6.6 ± 0.7), with overall intervals of 46.7 ± 11.5 ms (Fig. 8, Table 3). The individual average call intervals of groups 1 and 2 gradually decreased from 47.4 ms (i1) to 40.2 (i3) and from 49.6 ms (i5) to 45.1 ms (i7) respectively (Table 4). Mode and mean number of beats per female answer signal were 4 and 5.0 ± 1.8; mean beat interval was 64.0 ± 10.4 ms. The ♂ - ♀ exchange interval was 246.8 ms ± 84.4 ms and the male response contained 6 mode beats (4.7 ± 1.5); with intervals of 84.9 ± 19.2 ms. The ♀ - ♂ exchange interval was 39.4.3 ± 48.3 ms.</p></div> 	http://treatment.plazi.org/id/DE1AD619FFD2F56EC9697AE1FABC0994	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
DE1AD619FFDEF562CAD97BA7FEDE08A6.text	DE1AD619FFDEF562CAD97BA7FEDE08A6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Isoperla phalerata CO 1999	<div><p>Isoperla phalerata.</p> <p>Fifty and 28 signals were obtained from one, 1–2 day old male and female, respectively, at room temperature and normal incandescent light. The male and female produced 2-way sequenced signals and the male called with diphasic signals. The male called with 13 mode beats (12.8 ± 0.9); with intervals of 96.6 ± 16.6 ms during first phase and with 22 mode beats (22.2 ± 1.6); with 34.6 ± 5.7 ms during the second phase (Fig. 10, Table 3). The first phase average individual intervals decreased from 124.4 ms (i1) to 62.6 ms (i14) and the second phase gradually decreased from 51.3 ms (i1) to 31.0 (i16), then increased to 35.2 ms (i24) (Table 4). Mode and mean number of beats per female signal were 5 and 5.0 ± 1.0; average beat interval was 109.9 ± 27.7 ms. The ♂ - ♀ exchange interval was 301.0 ± 124.0 ms.</p> <p>These results for I. phalerata (Table 3) and those from Sandberg and Stewart (2003) for I. fulva and I. mormona (Table 6) differ considerably in overall average intervals for the same three species reported by Szczytko and Stewart (1979) (Table 5). We propose here that their consistently smaller intervals for these three species and those of I. quinquepunctata are probably in large part due to calibration inconsistency in their oscilloscope compared with the probably more accurate calibration of our computer (Sandberg and Stewart 2003).</p> </div>	http://treatment.plazi.org/id/DE1AD619FFDEF562CAD97BA7FEDE08A6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Sandberg, John B.;Stewart, Kenneth W.	Sandberg, John B., Stewart, Kenneth W. (2006): Continued Studies Of Vibrational Communication (Drumming) Of North American Plecoptera. Illiesia 2 (1): 1-14, DOI: http://doi.org/10.5281/zenodo.4758579
