Vespertilionidae

Lasint or Lain

See glossary for explanation of codes

Lasiurus intermedius H. Allen, 1862

Taxonomy follows Simmons and Cirranello (2021)

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Typical North American Vespertilionid pulses with FM reversed J broadband pulses of short duration.  However, distinctive for the genus Lasiurus the Fmin shifts up and down. Note that commute calls are longer duration, have a lower frequency and are narrow band.

Parameters	N	Min	Max	Mean	St.Dev	10%	25%	75%	90%
Dur	2711	2.00	16.69	5.74	2.72	2.64	3.53	7.47	9.73
TBC	2589	2.3	11104.8	327.8	744.1	55.1	111.0	275.0	483.2
Fmin	2711	26.02	34.93	30.37	2.04	27.73	28.73	31.94	33.20
Fmax	2711	28.07	50.00	36.98	4.74	31.19	33.26	39.80	43.60
BW	2711	0.16	20.69	6.61	3.93	2.26	3.68	8.84	11.99
Fmean	2711	26.76	37.97	32.15	2.33	29.14	30.23	33.96	35.34
Fk	2711	27.03	40.10	32.99	2.37	29.91	31.07	34.78	36.20
FcH1	2711	13.05	18.92	15.40	1.06	14.06	14.55	16.16	16.84
Fc	2711	26.10	37.83	30.80	2.12	28.12	29.09	32.32	33.68
FcH3	2711	39.15	56.75	46.20	3.18	42.18	43.64	48.48	50.52
Sc	2711	-31.75	206.78	37.31	21.01	15.71	22.48	47.96	66.01
Pmc	2711	0.00	74.00	20.04	12.93	5.80	10.20	27.20	38.40

 

Reported by Szewczak (2018)

Lasint	Fc	Fmax	Fmin	FmaxE	dur	uppr slp	lwr slp	slp @ Fc	total slp
Mean	28.4	45.5	27.9	29.4	10.5	4.9	0.9	0.1	1.9
Max	30.0	53.0	29.0	32.0	13.0	7.3	1.4	0.3	2.9
Min	27.0	38.0	26.0	27.0	8.3	2.4	0.4	0.0	0.9

 

Bruce Miller

Reference calls recorded by Miller are being archived at BioAcoustica and will be freely available. See Baker et al., (2015).

Alachua Baker Bay Bradford Brevard Broward Calhoun Charlotte Citrus Clay Collier Columbia De Soto Dixie Duval Escambia Flagler Franklin Gadsden Gilchrist Glades Gulf Hamilton Hardee Hendry Hernando Highlands Hillsborough Holmes Indian River Jackson Jefferson Lafayette Lake

Lee Leon Levy Liberty Madison Manatee Marion Martin Miami-Dade Monroe Nassau Okaloosa Okeechobee Orange Osceola Palm Beach Pasco Pinellas Polk Putnam Santa Rosa Sarasota Seminole St. Johns St. Lucie Sumter Suwannee Taylor Union Volusia Wakulla Walton Washington

Least concern; Ver.3.1 ; Population trend - unknown; evaluated 2016. (I.U.C.N. 2017.)

Baird et al. (2015) appeared to make a strong case of separating the genus Lasiurus into 3 genera; proposing that the genus name Lasiurus be restricted to red bats, Dasypterus be used as the genus name for yellow bats, and hoary bats plus L. egregius (which appears more closely related to hoary bats than to red bats) be reassigned to the genus Aeorestes.

 

However, Ziegler et al. (2016) stated "That there was insufficient justification for changing the well-established zoological nomenclature for these bats, and any potential value of applying different generic names to the three clades is far outweighed by the confusion that these name changes will cause.” Therefore, the classical nomenclature for the genus is maintained in these Fact Sheets and carried over to the Interactive ID keys to the vocal signatures of the Lasiurines.

 

See Baker et. al., (2015) for discussion of BioAcoustica and Baker and Vincent (2019) for a critique of the lack of freely available acoustic data.

Baird, A. B., et al. 2015. Molecular systematic revision of tree bats (Lasiurini): doubling the native mammals of the Hawaiian Islands. Journal of Mammalogy 96:1255-1274.

 

Baker, E., B. W. Price, S. D. Rycroft, J. Hill, and V. S. Smith. 2015. BioAcoustica: a free and open repository and analysis platform for bioacoustics. Database. 2015. bav054

 

Baker, E., and S. Vincent. 2019. A deafening silence: a lack of data and reproducibility in published bioacoustics research? Biodiversity Data Journal 7: e36783.

 

Marks, C. S., and G. E. Marks. 2006. Bats of Florida. Pp. 176. University of Florida Press, Gainesville.

 

Simmons, N. B., and A. L. Cirranello. 2020. Bat Species of the World: A taxonomic and geographic database. http://batnames.org

 

Szewczak, J. M. 2018. Echolocation Call Characteristics of Eastern U.S. Bats. Echolocation call characteristics of Eastern U.S. Bats. Unpublished report.

 

The IUCN 2017. Red List of Threatened Species. Version 2017-1.www.iucnredlist.org;. Downloaded on August 6, 2017.

 

Ziegler, A. C., F. G. Howarth, and N. B. Simmons. 2016. A second endemic land mammal for the Hawaiian Islands: a new genus and species of fossil bat (Chiroptera: Vespertilionidae). American Museum Novitates. 3854: 1-52.