Schistoglossa campbelli Klimaszewski, 2009

Klimaszewski, Jan, Webster, Reginald & Savard, Karine, 2009, First record of the genus Schistoglossa Kraatz from Canada with descriptions of seven new species (Coleoptera, Staphylinidae, Aleocharinae), ZooKeys 22 (22), pp. 45-79 : 56-70

Schistoglossa campbelli Klimaszewski , sp. n.

urn:lsid:zoobank.org:act:CE41CAEC-871C-47BB-ACD5-06CB820CC706

Figs 2, 17–24, Map 2

Holotype (male): CANADA, B.C. [British Columbia], Queen Charlotte Is., 8.8 km SW Tow Hill, J.M. Campbell; 22.VIII.1983, 83–108, treading Sphagnum & Carex at edge of marsh ( CNC). Paratypes: CANADA, B.C. [British Columbia], Queen Charlotte Is., 8.8 km SW Tow Hill, J.M. Campbell; 22.VIII.1983, 83–108, treading Sphagnum & Carex at edge of marsh ( CNC) 2 males, 4 females, 6 sex?, ( LFC) 1 male, 1 female, 1 sex?

Etymology. This species in named for J.M. Campbell of the former Biosystematics Research Institute, Ottawa, collector of the original series. Gender masculine.

Diagnosis. Body length 2.0– 2.4 mm, body moderately broad and subparallel, approximately uniformly dark brown, with tarsi or entire legs paler, moderately glossy and moderately densely pubescent (Fig. 2); antennae slim, articles 5–10 slightly transverse (Fig. 2); tempora each as long as two and a half times the maximal diameter of eye (Fig. 2); median lobe of aedeagus moderately broad, venter of tubus arcuate (Fig. 19), apical sclerites of internal sac V-shaped in dorsal view (Fig. 18); spermatheca S-shaped with capsule spherical apically and tubular basally, and with small apical invagination, stem moderately narrow and strongly sinuate (Fig. 22).

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50° 0' 0" N I 30° 0' 0" W I 20° 0' 0" W

Map 2. Collection localities in Canada of S. campbelli .

First record of the genus Schistoglossa Kraatz from Canada... 57

22 0.2 mm Ι7 Ι8 Ι9 20 2Ι 23 24

Figures Ι7–24. Schistoglossa campbelli : Ι7 paramere Ι8 median lobe of aedeagus in dorsal view Ι9 median lobe of aedeagus in lateral view 20 male tergite 8 2Ι male sternite 8 22 spermatheca 23 female tergite 8 24 female sternite 8.

Description. Body length 2.0– 2.4 mm, width 0.4 mm, approximately uniformly dark brown with slightly paler tip of abdomen and legs (Fig. 2); integument with weak microsculpture, sculpticells irregularly hexagonal, pubescence short, except slightly longer on head and abdomen, yellowish-brown in artificial light, moderately dense. Head slightly elongate, rounded posteriorly, weakly carinate basally, tempora as long as two and a half times the maximal diameter of eye as seen from above (Fig. 2); antennae slim with articles 5–10 slightly transverse (Fig. 2); pronotum moderately transverse, broadly rounded laterally and posteriorly, broadest in basal half, pubescence directed anteriorly on apical fourth of the midline and posteriorly and obliquely laterally elsewhere (Fig. 2); elytra moderately transverse, and slightly broadened posteriorly, hind margin sinuate, pubescence directed straight posteriad (Fig. 2); abdomen parallelsided, three basal tergites deeply impressed basally (Fig. 2). Male. Median lobe of the aedeagus moderately broad and flattened, venter of tubus arcuate with apex produced ventrally (Fig. 19), apical sclerites of internal sac V-shaped in dorsal view (Fig. 18); paramere as illustrated (Fig. 17); tergite 8 transverse and broadly emarginate apically, apical margin feebly toothed and with two large lateral teeth (Fig. 20); sternite 8 elongate and rounded posteriorly, slightly pointing medially, antecostal suture straight (Fig. 21). Female. Spermatheca S-shaped with capsule spherical apically and tubular basally, and with small apical invagination, stem moderately narrow and strongly sinuate (Fig. 22). Tergite and sternite 8 as illustrated (Figs 23, 24).

Bionomics. Adults were captured by treading Sphagnum and Carex at edge of marsh in August.

Geographic distribution (Map 2). Known only from the Queen Charlotte Islands of British Columbia, Canada.

Comments. Schistoglossa campbelli has a median lobe of the aedeagus and spermatheca similar to those of S. hampshirensis and S. pseudocampbelli to which it is probably closely related.

Schistoglossa pseudocampbelli Klimaszewski & Webster, sp. n. urn:lsid:zoobank.org:act:454AF461-DF44-4B14-993D-5FB2163029EB

Figs 3, 25–32, Map 3

Holotype (female): CANADA, New Brunswick, York Co., Charters Settlement, 45.8267°N, 66.7343°W, 21.V.2006, sedge fen, treading sedge hummocks into water, R.P. Webster ( LFC). Paratypes: New Brunswick: York Co., Charters Settlement, 45.8267°N, 66.7343°W, 21.IV.2005, 21.IV.2006, R.P. Webster , coll., Carex marsh, in sphagnum hummocks ( LFC) 1 male; ( RWC) 2 females; Charters Settlement, 45.8267°N, 66.7343°W, 16.IV.2005, 21.IV.2006, R.P. Webster , coll., Carex marsh, in sphagnum hummocks ( RWC) 1 female; Charters Settlement, 45.8340°N, 66.7240°W, 17.VI.2007, R.P. Webster , coll., regenerating mixed forest in small marsh, sweeping foliage of Carex species ( RWC) 1 female; Charters Settlement, 45.8404°N, 66.7360°W, medium-sized brook partially shaded by alders, brook margin among cobblestones and gravel ( RWC) 1 female; Mazerolle Settlement, 45.8729°N, 66.8311°W, 9.IV.2006, R.P. Webster , margin of stream [through former (drained) beaver pond], in litter at base of eastern white cedar ( RWC) 1 female; near Mazerolle Settlement, 45.8987°N, 66.7903°W, 9.IV.2006, R.P. Webster , coll., marsh [mostly grasses] with scattered alders, sifting grass and sphagnum at base of alder ( RWC) 1 female; 1.5 km N of Durham Bridge at Nashwaak River, 46.1408°N, 66.6179°W, 15.VI.2008, R.P. Webster , river margin, among cobblestones near outflow of brook [under alders] ( RWC) 1 female.

Etymology. The specific name, pseudocampbelli , is an adjective derived from the prefix pseudo added to the name campbelli , reflecting close genital similarities between the two species. Gender masculine.

Diagnosis. Body length 2.7–2.9 mm, body narrowly subparallel, approximately uniformly dark brown, with legs and antennal bases paler, moderately glossy and moderately densely pubescent (Fig. 3); antennae with articles 5–10 slightly transverse (Fig. 3); tempora each as long as approximately three times the maximal diameter of eye as seen from above (Fig. 3); median lobe of aedeagus moderately broad, venter of tubus almost straight (Fig. 27), apical sclerites of internal sac V-shaped in dorsal view (Fig. 26); spermatheca L-shaped, with capsule tubular, stem moderately narrow and approximately straight (Fig. 30).

Description. Body length 2.7–2.9 mm, width 0.4 mm, approximately uniformly dark brown with slightly paler legs and antennal bases (Fig. 3); integument with microsculpture well pronounced, sculpticells irregularly hexagonal, pubescence short, except for slightly longer on head and abdomen, yellowish brown in artificial light, moderately dense. Head slightly elongate, rounded, feebly carinate basally, tempora as long as approximately three times the maximal diameter of an eye (Fig. 3); antennae with articles 1–3 strongly elongate and 5–10 moderately transverse (Fig. 3); pronotum transverse, broadly rounded laterally and posteriorly, broadest in basal half, pubescence directed anteriorly on apical third of the midline and obliquely laterally elsewhere (Fig. 3); elytra as long as pronotum at suture, strongly transverse, subparallel, hind margin slightly sinuate, pubescence directed straight posteriad (Fig. 3); abdomen parallel-sided, four basal tergites strongly impressed basally (Fig. 3). Male. Median lobe of the aedeagus moderately broad and flattened, venter of tubus approximately straight with apex narrow (Fig. 27), apical sclerites of internal sac V-shaped in dorsal view (Fig. 26); paramere as illustrated (Fig. 25); tergite 8 transverse and broadly emarginate apically, apical margin feebly crenulate and with two large lateral teeth (Fig. 28); sternite 8 elongate and rounded posteriorly, slightly pointed medially, antecostal suture slightly pointed medially (Fig. 29). Female. Tergite 8 truncate apically and slightly emarginate medially (Fig. 31); sternite 8 broadly rounded apically and slightly pointed medially (Fig. 32). Spermatheca L-shaped, with tubular capsule, stem narrow and feebly sinuate and twisted posteriorly (Fig. 30).

Bionomics. Like other members of this genus, this species was most commonly captured in marshes or near wetlands. Adults were captured in Carex marshes in sphagnum hummocks, by treading sedge hummocks into water, sweeping foliage in Carex marsh, in grass and sphagnum at the base of alder in a marsh with grasses and alders,

60 Jan Klimaszewski, Reginald Webster & Karine Savard / ZooKeys 22: 45–79 (2009)

30 0.2 mm 25 26 27 28 29 3Ι 32

Figures 25–32. Schistoglossa pseudocampbelli : 25 paramere 26 median lobe of aedeagus in dorsal view 27 median lobe of aedeagus in lateral view 28 male tergite 8 29 male sternite 8 30 spermatheca 3Ι female tergite 8 32 female sternite 8.

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Map 3. Collection localities in Canada of S. pseudocampbelli .

and along stream margins among cobblestones under alders or in litter. Adults were collected in April, May, and June.

Geographic distribution (Map 3). Known only from New Brunswick, Canada.

Comments. Schistoglossa pseudocampbelli has genital structures similar to those of S. campbelli and S. brunswickensis and is probably closely related to these species.

Schistoglossa brunswickensis Klimaszewski & Webster, sp. n. urn:lsid:zoobank.org:act:B248D56C-8C67-4617-A651-7E1A331AA7D9

Figs 4, 33–42, Map 4

Holotype (female): CANADA, New Brunswick, York Co., Rt. 645 at Beaver Brook, 45.6860°N, 66.8669°W, 3.V.2008, R.P. Webster coll., Carex marsh, in litter at base of dead red maple ( LFC). Paratypes: CANADA, New Brunswick, York Co., Rt 645 at Beaver Brook, 45.6860°N, 66.8669°W, 3.V.2008, R.P. Webster coll., Carex marsh, in litter at base of dead red maple ( LFC) 1 male, ( RWC) 4 males, 2 females; same data except: 6.V.2008, Carex marsh, in grass and leaf litter at base of red maple ( RWC) 2 males, 3 females, 1 sex?; Charters Settlement, 45.8427°N, 66.7234°W, 24.IV.2004, R.P. Webster coll., abandoned beaver pond, in moist grass litter on muddy soil ( RWC) 1 male; Kingsclear Mazerolle Settle- ment, 45.8729°N, 66.8311°W, 28.IV.2006, R.P. Webster coll., stream margin, in grassy litter on muddy soil ( LFC) 1 male; Kelleys Creek at Sears Road, 45.8723 N, 66.8414 W, 7.VI.2008, R.P. Webster , coll., Carex marsh, treading vegetation into water ( RWC) 2 males. Ontario, Rondeau Provincial Park, Marsh Trail, 2.VI.1985, A. Davies and J.M. Campbell, tread Typha in marsh ( CNC) 1 female, 2 sex?. Quebec, Gatineau Park, Ramsay Lake, 11.V.1982, Carex, A. Davies ( CNC) 1 male.

Etymology. The name of this species derives from the province of New Brunswick, where the original series was captured. New Brunswick, in turn, was named in honour of the German city of Brauschweig in Lower Saxony, the ancestral home of the British monarch, George III (1738–1820). Gender masculine.

Diagnosis. Small species, length 1.8–2.1 mm, body narrowly subparallel, approximately uniformly dark brown, with tarsi or entire legs, bases of antennae and mouthparts paler, moderately glossy and moderately densely pubescent (Fig. 4); antennae slim, articles 5–10 slightly to strongly transverse (Fig. 4); tempora each about as long as three times maximal diameter of eye as seen from above (Fig. 4); median lobe of aedeagus moderately broad, venter of tubus arcuate (Fig. 35), apical sclerites of internal sac V-shaped in dorsal view (Fig. 34); spermatheca S-shaped, with capsule tubular, stem moderately narrow and angularly bent posteriad (Fig. 39). Except for protruding eyes, slightly more transverse pronotum, and longer body, this species is not externally distinguishable from S. hampshirensis .

Description. Body length 1.8–2.1 mm, width 0.3–0.4 mm, approximately uniformly dark brown with tarsi or entire legs, base of antennae and mouthparts paler (Fig. 4); integument with weak microsculpture, sculpticells irregularly hexagonal, pubescence short, except for slightly longer on head and abdomen, yellowish-brown in artificial light, moderately dense. Head approximately round, feebly carinate basally, tempora as long as approximately three times the maximal diameter of eye seen from above (Fig. 4); antennae slim with articles 5–10 from moderately transverse (Fig. 4); pronotum strongly transverse, broadly rounded laterally and posteriorly, broadest in basal half, pubescence directed anteriorly on apical third of the midline and obliquely laterally elsewhere (Fig. 4); elytra short, strongly transverse, subparallel, hind margin approximately straight, pubescence directed straight posteriad (Fig. 4); abdomen parallel-sided, three basal tergites strongly impressed basally (Fig. 4). Male. Tergite 8 emarginate apically with irregular crenulation and two large lateral teeth (Fig. 20); sternite 8 elongate and slightly produced apically (Fig. 38). Median lobe of aedeagus moderately broad, less than in other species of the genus, and flattened, venter of tubus arcuate, apex slightly produced ventrally (Figs 35, 36), apical sclerites of internal sac V-shaped in dorsal view (Fig. 34); paramere as illustrated (Fig. 33). Female. Tergite 8 truncate apically (Fig. 41); sternite 8 broadly rounded apically (Fig. 42). Spermatheca S-shaped, with tubular capsule, and stem angularly bent posteriorly (Fig. 39). Aberrant form of spermatheca is shown in Fig. 40.

Bionomics. Adults were captured in Carex and Typha marshes, in litter and grass at the base of dead red maples, in a Carex marsh (probably an overwintering site), tread-

First record of the genus Schistoglossa Kraatz from Canada... 63

39 0.2 mm 33 35 34 40 36 37 38 4Ι 42

Figures 33–42. Schistoglossa brunswickensis : 33 paramere 34 median lobe of aedeagus in dorsal view 35, 36 median lobe of aedeagus in lateral view 37 male tergite 8 38 male sternite 8 39 typical form of spermatheca 40 aberrant form of spermatheca 4Ι female tergite 8 42 female sternite 8.

80° 0' 0" W 70° 0' 0" W 60° 0' 0" W

50° 0' 0" N

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90° 0' 0" W 80° 0' 0" W 70° 0' 0" W

Map 4. Collection localities in Canada of S. brunswickensis .

ing vegetation in a Carex marsh, in moist grass litter on muddy soil at a beaver pond and bank of a stream, in April, May, and June.

Geographic distribution (Map 4). Known from Ontario, Quebec and New Brunswick, Canada.

Comments. Schistoglossa brunswickensis has genital structures similar to S. charlottae and S. hampshirensis and is probably closely related to these species.

Schistoglossa hampshirensis Klimaszewski , sp. n. urn:lsid:zoobank.org:act:BBB4EE49-2CD0-497D-80EE-4B52C3484C47

Figs 5, 43–51, Map 5

Holotype (female): UNITED STATES, New Hampshire, Coos Co., Mt. Washington, above tree line, 5200–5700 feet, 10.IX.1987, J.M. Campbell and A. Davies, dwarf Salix , Vaccinium , leather-leaf litter ( CNC). Paratypes: CANADA, Quebec, Parc Gaspésie, Mount Albert, 20–21.VII.1972, 3700 feet, J.M. Campbell ( LFC) 1 female. UNITED STATES, New Hampshire, Coos Co., Mt. Washington, above tree line, 5200–5700 feet, 10.IX.1987, J.M. Campbell and A. Davies, dwarf Salix , Vaccinium , leather-leaf litter ( CNC) 4 males, 3 sex?, ( LFC) 1 male, 1 female, 1 sex?; Mt. Washington, Alpine Garden, 5300 feet, 12.IX.1987, J.M. Campbell and A. Davies, sifting dwarf Salix litter

First record of the genus Schistoglossa Kraatz from Canada... 65

46 0.2 mm 44 43 45 49 47 48 50 5Ι

Figures 43–5Ι. Schistoglossa hampshirensis : 43 paramere 44 median lobe of aedeagus in dorsal view 45, 46 median lobe of aedeagus in lateral view 47 male tergite 8 48 male sternite 8 49 spermatheca 50 female tergite 8 5Ι female sternite 8.

( CNC) 1 female, 1 sex?; Mt. Washington, Crawford Path , 5500 feet, 10.IX.1987, A. Davies, sifting Vaccinium , leather-leaf litter with moss and grasses ( CNC) 1 male, ( LFC) 1 female ; Gorham , 10.IX.1987, L. LeSage and E. Rickey, ex pile of red oak wood chips and dust near river ( CNC) 1 male .

Etymology. The specific name hampshirensis , an adjective derived from the state of New Hampshire, where the species was found. New Hampshire, in turn, was named after the county of Hampshire in England. Gender masculine.

Diagnosis. The smallest Schistoglossa species, length 1.8–1.9 mm, body narrowly subparallel, approximately uniformly dark brown, with tarsi, antennal bases and mouthparts paler, moderately glossy and moderately densely pubescent (Fig. 5); antennae slim, articles 5–10 slightly transverse (Fig. 5); tempora each about as long as three times the maximal diameter of eye as seen from above (Fig. 5); median lobe of aedeagus moderately broad, venter of tubus arcuate (Figs 45, 46), apical sclerites of internal sac V-shaped in dorsal view (Fig. 44); spermatheca S-shaped, with capsule tubular, stem moderately narrow and sinuate (Fig. 49). Except for slightly less transverse pronotum, this species is not externally distinguishable from S. brunswickensis .

Description. Body length 1.8–1.9 mm, width 0.3 mm, approximately uniformly dark brown with tarsi, antennal bases and mouthparts paler (Fig. 5); integument with weak microsculpture, sculpticells irregularly hexagonal, pubescence short, except for slightly longer on head and abdomen, yellowish-brown in artificial light, moderately dense. Head approximately round and slightly elongate, feebly carinate basally, tempo-

70° 0' 0" W 60° 0' 0" W

50° 0' 0" N

70° 0' 0" W

Map 5. Collection localities in Canada and the United States of S. hampshirenis and S. sphagnorum .

ra approximately as long as three times the maximal diameter of eye (Fig. 5); antennae slim with articles 5–10 moderately transverse (Fig. 5); pronotum slightly transverse, broadly rounded laterally and posteriorly, broadest in basal half, pubescence directed anteriorly on apical third of the midline and obliquely laterally elsewhere (Fig. 5); elytra short and strongly transverse, subparallel, hind margin approximately straight, pubescence directed obliquely or straight posteriad (Fig. 5); abdomen parallel-sided, three basal tergites strongly impressed basally (Fig. 5). Male. Tergite 8 slightly emarginated apically and bearing irregular crenulation and two larger lateral teeth (Fig. 47); sternite 8 elongate and slightly produced apically (Fig. 48). Median lobe of the aedeagus moderately broad and flattened, venter of tubus arcuate, apex slightly produced ventrally (Figs 45, 46), apical sclerites of internal sac V-shaped in dorsal view (Fig. 44); paramere as illustrated (Fig. 43). Female. Tergite 8 truncate apically and bearing minute emargination (Fig. 50); sternite 8 broadly rounded apically and pointed (Fig. 51). Spermatheca S-shaped, with tubular capsule, stem narrow and sinuate (Fig. 49).

Bionomics. Adults were captured in Salix , Vaccinium and Chamaedaphne leaf litter, in July and September. The New Hampshire specimens were collected at elevations of 5200–5700 feet and the only Quebec specimen was found on Mount Albert at 3,700 feet, suggesting possible northern affiliation for this species. The New Brunswick specimen was captured in eastern white cedar swamp, in moss and leaf litter near a brook in April.

Geographic distribution (Map 5). Known from Quebec and New Brunswick in Canada and New Hampshire in the United States.

Comments. Schistoglossa hampshirensis has genital structures similar to those of S. campbelli , to which it is probably closely related.

II. Subgenus Schistoglossa (Boreomorpha) Klimaszewski & Webster , subgen. n. urn:lsid:zoobank.org:act:8267555B-8CD5-46A1-AB6E-40E7DBD17C2A

Figs 6–8, 52–75

Type species: Schistoglossa sphagnorum Klimaszewski & Webster, sp. n., present designation.

Diagnosis. The subgenus Boreomorpha may be characterized by the following combination of characters: antennal articles 5–10 slightly elongate (Figs 6–8); eyes moderately-sized (Figs 6–8); postocular area well developed and about as long as twice the maximal diameter of eye as seen from above (Figs 6–8); postocular carina weak, present only basally or obsolete; median lobe of aedeagus with bulbus and tubus streamlined in dorsal view (Figs 53, 61, 69), internal sac without V-shaped structure typical for the subgenus sensu stricto but with two lunar-shaped subapical structures easily visible in lateral view (Figs 53, 62, 70); male tergite 8 broadly arcuate apically, apical margin entire and without lateral teeth and crenulation (Figs 55, 63, 71); spermatheca clubshaped and with approximately spherical capsule (Figs 57, 65, 73).

This group contains species that bear some transitional characters between Schistoglossa and Boreophilia but are placed in the former genus on the grounds of mandibu- lar structures (2 + 3 teeth), consistent with the remaining Schistoglossa species and the generic type S. viduata (Erichson) (Figs 76, 77, 79, 80). Additional studies are needed to verify the status of all species currently placed in the genus Boreophilia .

Schistoglossa sphagnorum Klimaszewski & Webster, sp. n. urn:lsid:zoobank.org:act:F98EEE5E-3C2F-497C-96FB-ED7D2A839324

Figs 52–59, Map 5

Holotype (female): CANADA, New Brunswick, York Co., Charters Settlement, 45.8267°N, 66.7343°W, 16.IV.2005, R.P. Webster coll., Carex marsh in sphagnum hummocks ( LFC). Paratypes: CANADA, New Brunswick: Charlotte Co., 3.0 km NW of Pomeroy Ridge, 45.3059´N, 67.4343´W, 5.VI.2008, R.P. Webster , coll., alder swamp (adjacent to eastern white cedar swamp) in moss hummocks with grasses ( RWC) 1 female. York Co., Charters Settlement, 45.8267´N, 66.7343´W, 16.IV.2005, R.P. Webster coll., Carex marsh in sphagnum hummocks ( LFC) 1 male; same locality data, 29.III.2006, R.P. Webster , Carex marsh in litter and sphagnum at base of tree ( RWC) 1 male; same locality data, 9.IV.2005, R.P. Webster , Carex marsh in sphagnum hummock; same locality data, 16. IV.2005, R.P. Webster , coll., Carex marsh in litter and sphagnum at base of tree, ( RWC) 3 males; same locality data, 30.IV.2005, R.P. Webster coll., Carex marsh in sphagnum hummock ( RWC) 1 female; same locality data, 14.V.2005, R.P. Webster , Carex marsh in litter and sphagnum at base of tree ( RWC) 1 male, 1 female; Canterbury, “Browns Mtn. Fen”, 45.8967°N, 67.6343°W, 2.V.2005, M. Giguère and R.P. Webster coll., calcareous cedar fen in moist sphagnum in area with sedges ( LFC) 1 male, ( RWC) 2 females. Carleton Co., Wilmot “Two Mile Brook Fen”, 46.3619°N, 67.6730°W, 6.V.2005, M. Giguère and R.P. Webster coll., calcareous cedar fen, open area with sedges in Sphagnum in Carex hummock ( RWC) 1 male, 1 female. Queens Co., near Upper Gagetown in bog adjacent to Hwy 2, 45.8316°N, 66.2346°W, 12.IV.2006, R.P. Webster , coll., tamarack bog in sphagnum hummock at bog margin ( RWC) 1 female.

Etymology. Sphagnorum is an adjective derived from Sphagnum , the major plant constituent of the habitat where the species was typically found. Gender masculine.

Diagnosis. Medium-sized species, length 2.3–2.5 mm, body narrow and subparallel, approximately uniformly dark brown, moderately glossy and moderately densely pubescent (Fig. 6); antennae robust, all articles elongate (Fig. 6); tempora each as long as about three times the maximal diameter of eye (Fig. 6); median lobe of aedeagus broad (Fig. 53), venter of tubus sinuate (Fig. 54), apical sclerites of internal sac lunarshaped in lateral view (Fig. 54); spermatheca S-shaped with capsule narrowly spherical, bearing internal ribbings and without apical invagination, stem moderately narrow and sinuate (Fig. 57).

Description. Body length 2.3–2.5 mm, width 0.4–0.5 mm, approximately uniformly dark brown with slightly darker head and abdomen, and paler legs and mouthparts (Fig. 6); integument with weak microsculpture, sculpticells irregularly hexagonal, pubescence short, except slightly longer on head and abdomen, yellowish-brown in artificial

Figures 52–59. Schistoglossa sphagnorum : 52 paramere 53 median lobe of aedeagus in dorsal view 54 median lobe of aedeagus in lateral view 55 male tergite 8 56 male sternite 8 57 spermatheca 58 female tergite 8 59 female sternite 8.

light, moderately dense. Head slightly elongate, rounded posteriorly, carinate basally, tempora as long as approximately three times maximal diameter of eye (Fig. 6); antennae robust and all articles slightly to strongly elongate (Fig. 6); pronotum transverse, broadly rounded laterally and posteriorly, broadest in apical half, pubescence directed anteriorly on apical third of the midline and laterally elsewhere (Fig. 6); elytra short, as long as pronotum, transverse, hind margin nearly straight, pubescence directed obliquely posteriad (Fig. 6); abdomen parallel-sided, four basal tergites deeply impressed basally (Fig. 6).

Male. Median lobe of the aedeagus broad and flattened (Fig. 53), venter of tubus sinuate and apex narrow (Fig. 54), apical sclerites of internal sac lunar-shaped in lateral view (Fig. 54), and basal sclerites narrowly elongate (Fig. 53); paramere as illustrated (Fig. 52); tergite 8 transverse and entire, apical margin without or with small emargination (Fig. 55); sternite 8 elongate and rounded posteriorly, antecostal suture sinuate and pointed medially (Fig. 56). Female. Spermatheca S-shaped with capsule narrowly spherical, bearing internal ribbings and without apical invagination, stem moderately narrow and sinuate (Fig. 57). Tergite and sternite 8 as illustrated (Figs 58, 59).

Bionomics. Schistoglossa sphagnorum appears to be associated with open, sun-exposed calcareous eastern white cedar ( Thuja occidentalis L.) fens with shrubby cinquefoil ( Pentaphylloides floribunda (Pursh) A. Love ), circumneutral Carex fens adjacent to areas with eastern white cedar, and tamarack bogs or fens, rather than true acidic bogs (e.g. black spruce, Picea mariana (Mill.) BSP, bogs). Adults of this species were captured in Sphagnum (by treading or sifting Sphagnum ) in these habitats. Adults were captured in moist Sphagnum in Carex hummocks and in sphagnum and litter at the base of trees near the margin of Carex marshes (circumneutral fens) and in eastern white cedar fens, or in Sphagnum hummocks near the margin of a tamarack ( Larix laricina (Du Roi) Koch ) fen or bog. In New Brunswick, this species becomes active very early in the spring (late March and May) shortly after the snow has melted in open sun-exposed areas (these may be overwintering sites for this species) and when snow is often still present in the adjacent forests.

Geographic distribution (Map 5). Known only from New Brunswick, but probably more broadly distributed in northern Canada.

Comments. Schistoglossa sphagnorum is externally similar to the other members of this genus but the shape of the apical part of the median lobe in lateral view and the shape of the spermatheca are distinct despite overall similarity to those of S. carexiana and S. blatchleyi .