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Corresponding author: Reginald P. Webster ( reginaldwebster@rogers.com ) Academic editor: Patrice Bouchard
© 2016 Reginald P. Webster, Jon D. Sweeney.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Webster RP, Sweeney JD (2016) New records of Helophoridae, Hydrochidae, and Hydrophilidae (Coleoptera) from New Brunswick, Canada. In: Webster RP, Bouchard P, Klimaszewski J (Eds) The Coleoptera of New Brunswick and Canada: providing baseline biodiversity and natural history data. ZooKeys 573: 19–30. https://doi.org/10.3897/zookeys.573.7020
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The following three species of Helophoridae are newly recorded for New Brunswick, Canada: Helophorus (Kyphohelophorus) turberculatus Gyllenhal, Helophorus (Rhopaleloporus) oblongus LeConte, Helophorus (Rhopaleloporus) marginicollis Smetana. Hydrochus subcupreus Randall, family Hydrochidae, and the following 15 species of Hydrophilidae are newly reported for the province: Berosus fraternus LeConte, Berosus peregrinus (Herbst), Berosus sayi Hansen, Paracymus despectus (LeConte), Chaetarthria atra (LeConte), Cymbiodyta acuminata Fall, Cymbiodyta blanchardi Horn, Cymbiodyta minima Notman, Enochrus (Lumetus) hamiltoni Horn, Enochrus (Methydrus) consors (LeConte), Enochrus (Methydrus) consortus Green, Enochrus (Methydrus) pygmaeus nebulosus (Say), Cercyon (Cercyon) cinctus Smetana, Cercyon (Cercyon) herceus frigidus Smetana, Cercyon (Dicyrtocercyon) ustulatus (Preyssler).
Helophoridae , Hydrochidae , Hydrophilidae , Hydrophilinae , Chaetarthriinae , Enochrinae , Sphaeridiinae , new records, Canada, New Brunswick
This paper treats new records of Helophoridae, Hydrochidae, and Hydrophilidae from New Brunswick, Canada. A few brief comments are required regarding the family status of Helophoridae, Hydrochidae, and Georissidae as there has been some disagreement in the literature.
The Helophoridae and Hydrochidae are aquatic and usually occur in fresh water (
Thirty-eight species of Hydrophilidae, including the Helophoridae and Hydrochidae, were reported for New Brunswick by
Collection methods. The following records are based, in part, on specimens collected as part of a general survey to document the Coleoptera fauna of New Brunswick. Helophoridae, Hydrochidae, and Hydrophilidae were sampled from various aquatic and semi-aquatic habitats. Aquatic habitats were sampled with aquatic nets. Very small aquatic and semi-aquatic habitats, such as vernal pools, spring-fed seepages, and moss and debris on stream margins, were sampled by removing moss and debris and placing it on a cloth sheet or aquatic net to drain water away. The specimens were sifted and collected as they became active. Some specimens were collected from Lindgren funnel trap samples during a study to develop methods for improved survey and detection of potentially invasive species of bark and wood-boring beetles. These traps are visually similar to tree trunks and are often effective for sampling species of Coleoptera that live in microhabitats associated with standing trees (
Specimen preparation. Males of Hydrochidae and some species of Helophoridae and Hydrophilidae were dissected to confirm their identity. The genital structures were dehydrated in absolute alcohol and mounted in Canada balsam on celluloid microslides and then pinned with the specimens from which they originated. Keys in
Distribution. Every species is cited with current distribution in Canada and Alaska, using abbreviations for the state, provinces, and territories. New records for New Brunswick are indicated in bold under Distribution in Canada and Alaska. The following abbreviations are used in the text:
AB Alberta
AK Alaska
BC British Columbia
MB Manitoba
NB New Brunswick
NF & LB Newfoundland and Labrador*
NS Nova Scotia
NT Northwest Territories
NU Nunavut
ON Ontario
PE Prince Edward Island
QC Quebec
SK Saskatchewan
YT Yukon Territory
*Newfoundland and Labrador are each treated separately under the current Distribution in Canada and Alaska.
Acronyms of collections examined or where specimens reside referred to in this study are as follows:
AFC Atlantic Forestry Centre, Fredericton, New Brunswick, Canada
RWC Reginald P. Webster Collection, Charters Settlement, New Brunswick, Canada
All records below are species newly recorded for New Brunswick, Canada. Species with a † are adventive to Canada, species with a * are Holarctic. The determination that a species was a new record was based on information in the print version of
New Brunswick, Restigouche Co., near Little Tobique River, 47.4503°N, 67.0583°W, 13.VI.2006, R.P. Webster // Eastern white cedar swamp, in saturated moss in small pool (1, RWC).
AK, YT, BC, AB, SK, MB, ON, QC, NB, NS (
New Brunswick, Madawaska Co., 4.0 km W of Saint-Hilaire, 47.2926°N, 68.4622°W, 27.VII.2006, R.P. Webster // Margin of Saint John River in rock pool (1, RWC).
ON, NB (
New Brunswick, Restigouche Co., Morin Bog, N of Kedgwick, 47.6813°N, 67.3142°W, 22.V.2003, R.P. Webster // Black spruce forest, flooded semi-permanent sedge marsh [pond] (1, RWC).
AK, YT, NT, NU, BC, AB, SK, MB, ON, QC, NB (
New Brunswick, York Co., Charters Settlement, 45.8395°N, 66.7391°W, 26.VI.2003, 17.VII.2004, 1.VIII.2004, 11.VI.2005, 10.VII.2005, 20.VII.2006, 3.IX.2010, R.P. Webster // Mixed forest, m.v. light (10 [6 males dissected], RWC)
ON, QC, NB (
New Brunswick, Restigouche Co., 8.5 km S of Saint Arthur, 47.8196°N, 66.7596°W, 14.VI.2006, R. P. Webster // Mixed forest, gravel bottomed pool near roadside (4, RWC). Sunbury Co., Sheffield, Portobello Creek N.W.A. [National Wildlife Area], 45.8952°N, 66.2728°W, 18.VI.2004, R.P. Webster // Silver maple forest, u.v. light trap near marsh (1, RWC). York Co., 45.8428°N, 66.7279°W, 2.VI.2003, R.P. Webster // Mixed forest, small pool on forest trail (1, RWC).
BC, AB, SK, MB, ON, QC, NB (
New Brunswick, Carleton Co., Bell Forest, 46.2200°N, 67.7231°W, 13.VII.2004, K. Bredin, J. Edsall, & R. Webster // Mature hardwood forest, u.v. light trap (1,
ON, QC, NB, NS (
New Brunswick, Albert Co., Shepody N.W.A., Germantown Section, 45.7060°N, 64.7640°W, 16.VI.2004, R. P. Webster // Cattail and sedge marsh in small pool (1, RWC). Gloucester Co., Miscou Island, 47.9081°N, 64.5907°W, 31.VII.2005, R. P. Webster // Shallow (15 cm) gravel pit pond with scattered grasses and sedges and gravel bottom (1, RWC). Queens Co., Grand Lake near Scotchtown, 45.8762°N, 66.1816°W, 19.V.2003, V. Webster, M.-A. Giguère & R. Webster // Shallow lake margin among grasses (1, RWC); Grand Lake, Scotchtown, 45.8763°N, 66.1822°W, 16.VI.2013, R.P. Webster // Lake margin in shallow water (1,
NT, BC, AB, SK, MB, ON, QC, NB, PE (
New Brunswick, Queens Co., C.F.B. Gagetown, 45.7516°N, 66.1866°W, 3-15.VII.2013, C. Alderson & V. Webster // Old mixed forest with Quercus rubra, Lindgren funnel trap in canopy of Q. rubra (1, AFC). York Co., Canterbury, Browns Mtn. Fen [Eel River P.N.A.], 45.8967°N, 67.6343°W, 23.VI.2005, J. Edsall & R. Webster // Cedar swamp, in shaded moss-covered pools (4, RWC); same locality but 23.VI.2014, R.P. Webster // Calcareous cedar fen with shrubby cinquefoil, treading saturated sphagnum along moose trail (1,
AB, SK, MB, ON, QC, NB (
Most specimens from New Brunswick were collected from saturated sphagnum moss in an open calcareous cedar fen.
New Brunswick, Carleton Co., Belleville, Meduxnekeag Valley Nature Preserve, 46.1942°N, 67.6832°W, 9.VI.2008, R.P. Webster // River margin, among cobblestones set in sand and fine gravel near water’s edge (2, RWC). Queens Co., Bayard at Nerepis River, 45.4426°N, 66.3280°W, 30.V.2008, 25.VI.2010, R.P. Webster // River margin, under small rocks in gravel and in moist gravel (5, RWC)
QC, NB, NS (
In New Brunswick, adults of Chaetarthria atra (LeConte) were found on river margins among cobblestones set in fine sand and gravel, under small rocks, and in moist gravel at water’s edge. Little was previously known about its habitat preferences (
New Brunswick, Albert Co., Shepody N.W.A., Germantown Section, 45.7056°N, 64.7642°W, 17.V.2004, R. P. Webster // Cattail and sedge marsh in marsh litter (1, RWC). York Co., Charters Settlement, 45.8263°N, 66.7350°W, 5.V.2003, R. P. Webster // Sedge marsh, in pools among sedges and sphagnum moss (1, RWC).
AK, YK, NT, BC, AB, SK, MB, ON, QC, NB, NS (
New Brunswick, Albert Co., Caledonia Gorge P.N.A., 45.8380°N, 64.8484°W, 3.VII.2011, R.P. Webster // Near Turtle Creek, old-growth hardwood forest, mossy [spring-fed] seepage with some Carex, sifting saturated moss (1, RWC). Carleton Co., Meduxnekeag Valley Nature Preserve, 46.1890°N, 67.6706°W, 8.VI.2005, R. P. Webster // Old-growth cedar stand, in saturated moss and debris in spring-fed seepage (7, RWC); [Jackson Falls] Bell Forest, 46.2210°N, 67.7210°W, 2.VI.2005, R. P. Webster // Mature hardwood forest, among small stones in spring-fed brook (2, RWC). York Co., Charters Settlement, 45.8380°N, 66.7309°W, 14.V.2004, R. P. Webster // Mixed forest, small clear stream among gravel and stones (1, RWC).
ON, QC, NB (
Most specimens of Cymbiodyta blanchardi Horn from New Brunswick were found in saturated moss and debris in spring-fed seepages. Others were found among small stones in a spring-fed brook and among gravel and stones in a small clear stream.
New Brunswick, Albert Co., Shepody N.W.A., Germantown Section, 45.7101°N, 64.7542°W, 17.V.2004, R. P. Webster // Spruce, fir, birch forest near large marsh, in leaf litter (1, RWC). Sunbury Co., Sheffield, Portobello Creek N.W.A., 45.8965°N, 66.2725°W, 1.VIII.2004, R. P. Webster // Silver maple swamp near seasonally flooded marsh, u.v. light trap (1, RWC).
BC, MB, ON, QC, NB (
New Brunswick, Gloucester Co., Caraquet near Rivière du Nord, 47.7949°N, 65.0903°W, 15.VIII.2003, R. P. Webster // Salt marsh, in small salt pond (2,
NT, BC, AB, SK, MB, ON, QC, NB, NS, PE, NF (
New Brunswick, Queens Co., Grand Lake Meadows P.N.A., 45.8227°N, 66.1209°W, 24.VIII-3.IX.2010, R.P. Webster // Old silver maple forest with green ash and seasonally flooded marsh, Lindgren funnel trap (1, RWC); same locality data, forest type and collection method but 5-17.VIII.2011, M. Roy & V. Webster (1, RWC). Restigouche Co., Otter Brook Fen, 47.9337°N, 68.0532°W, 30.VII.2012, R. Webster & M. Turgeon // Carex marsh on lake margin, treading vegetation (1, RWC).
ON, QC, NB (
New Brunswick, Queens Co., Grand Lake near Scotchtown, 45.8762°N, 66.1816°W, 9.VII.2006 // R. P. Webster, oak and maple forest, m.v. light (2, RWC). Sunbury Co., Maugerville, Portobello Creek N.W.A., 45.8992°N, 66.4248°W, 18.VI.2004, R. P. Webster // Silver maple forest near slow flowing river, black light trap (1 [male dissected], RWC). York Co., Charters Settlement, 45.8395°N, 66.7391°W, 17.VI.2004, R.P. Webster // Mixed forest, m.v. light (1, RWC)
MB, ON, NB (
New Brunswick, York Co., Charters Settlement, 45.8395°N, 66.7391°W, 23.VII.2007, R. P. Webster // Mixed forest, u.v. light (1, RWC).
MB, ON, QC, NB (
New Brunswick, York Co., Charters Settlement, 45.8395°N, 66.7391°W, 23.VII.2007, 20.VIII.2011, R. P. Webster // Mixed forest, m.v. light (2, RWC); Douglas, Currie Mountain, 45.9832°N, 66.7564°W, 24.VI–9.VII.2013, C. Alderson & V. Webster // Old Pinus strobus stand, Lindgren funnel trap in canopy of P. strobus (1, RWC).
NT, BC, AB, SK, MB, ON, QC, NB (
New Brunswick, Albert Co., Shepody N.W.A., Germantown Section, 45.7056°N, 64.7642°W, 17.V.2004, R. P. Webster // Cattail and sedge marsh, in marsh litter (1, RWC); Caledonia Gorge P.N.A., 45.7930°N, 64.7764°W, 1.VII.2011, R.P. Webster // Small rocky clear-cold river (Caledonia Creek), sifting drift material (tree bud material) near eddy area (1, RWC). Carleton Co., Two Mile Brook Fen, 46.3619°N, 67.6733°W, 6.V.2005, R.P. Webster // Cedar forest/swamp, in moist sphagnum (1, RWC). Queens Co., W of Jemseg near “Trout Creek” [Grand Lake Meadows P.N.A.], 45.8227°N, 66.1240°W, 9.V.2004, R.P. Webster // Silver maple swamp, sifting litter at base of large tree (1, RWC). Sunbury Co., Maugerville, Portobello Creek N.W.A., 45.8992°N, 66.4248°W, 5.VI.2004, R. P. Webster // Silver maple forest, margin of small pond in leaf litter (1, RWC); Gilbert Island, 45.8770°N, 66.2954°W, 12-29.VI.2012, C. Alderson, C. Hughes & V. Webster // Hardwood forest, Lindgren funnel trap 1 m high under Juglans cinerea (1, RWC). York Co., Fredericton, at Saint John River, 45.9588°N, 66.6254°W, 4.VII.2004, R.P. Webster // River margin, in drift material (mostly maple seeds) (1, RWC); Charters Settlement, 45.8395°N, 66.7391°W, 15.IV.2004, R. P. Webster // Mixed forest, in leaf litter near small stream (2, RWC); same locality data and collector but 9.IV.2005 // Residential lawn among lawn grass adjacent to garden (1, RWC).
AK, YT, NT, BC, AB, SK, MB, ON, QC, NB (
New Brunswick, Sunbury Co., Gilbert Island, 45.8770°N, 66.2954°W, 18-28.V.2012, C. Alderson, C. Hughes & V. Webster // Hardwood forest, Lindgren funnel trap 1 m high under Tilia americana (1, RWC).
QC, NB (
We thank Aleš Smetana and an anonymous reviewer for their helpful comments. Anthony Davies is thanked for supplying some references and comments on the status of the eastern Georissus species. We thank Caroline Simpson (AFC) for editing this manuscript. Chantelle Alderson, Kate Bredin, Jim Edsall, Marie-Andrée Giguère, Cory Hughes, Michelle Roy, Dwayne Sabine, and Vincent Webster are thanked for technical assistance and collecting specimens. We thank Natural Resources Canada, Canadian Forest Service, the Canadian Food Inspection Agency, and the