Leptusa (Ulitusa) cribratula (Casey, 1906)

(Figs. 1 j, 11a – l, Map 1)

Ulitusa cribratula Casey, 1906: 347 .

Leptusa cribratula: Fenyes, 1920: 123; Bernhauer & Scheerpeltz, 1926: 556; Seevers, 1978: 284; Moore & Legner, 1975: 483; Pace, 1989:116; Klimaszewski et al., 2004: 22; Gouix & Klimaszewski, 2007: 63.

Material examined (n=25) (most not sexed). U.S. A: Tennessee: Sevier Co.: 4, GSMNP, Sugarlands Quiet Walkway, N35°39.826’ W83°31.509’, 2 April 2007, SN3 CWD5 1 of 3, M. Ferro (GSMNP); 1, GSMNP, Sugarlands Quiet Walkway, N35°39.826’ W83°31.509’, 2 April 2007, SN3 CWD5 3 of 3, M. Ferro (LSAM); 2 (Ψ slide mounted), GSMNP, Sugarlands Quiet Walkway, N35°39.826’ W83°31.509’, 6 October 2006, SN3 CWD5 3 of 3, M. Ferro (LSAM); 1, GSMNP, Sugarlands Quiet Walkway, N35°39.826’ W83°31.509’, 28 June – 10 October 2007, SN31C -CWD Rear 1, M. Ferro (LSAM); 1, GSMNP, Sugarlands Quiet Walkway, N35°39.826’ W83°31.509’, 4 October 2006 – 1 April 2007, SN34C -CWD Rear 1, M. Ferro (LSAM); 2, GSMNP, Greenbrier, N35°43.147’ W83°23.349’, 18 May – 24 June 2006, SP15B -CWD Rear 1, M. Ferro (LSAM); 1, GSMNP, Greenbrier, N35°43.147’ W83°23.349’, 4 October 2006 – 1 April 2007, SP13A -CWD Rear 1, M. Ferro (LSAM); Ψ (slide mounted), GSMNP, Greenbrier, N35°43.147’ W83°23.349’, 4 October 2006 – 1 April 2007, SP14B -CWD Rear 1, M. Ferro (LSAM); 3, GSMNP, Porters Creek, N35°40.790’ W83°23.855’, 4 October 2006 – 1 April 2007, SP21C -CWD Rear 1, M. Ferro (GSMNP); 1, GSMNP, Porters Creek, N35°40.790’ W83°23.855’, 4 October 2006 – 1 April 2007, SP25B -CWD Rear 1, M. Ferro (LSAM); 1, GSMNP Porters Creek, N35°40.790’ W83°23.855’, 4 October 2006 – 1 April 2007, SP24C -CWD Rear 1, M. Ferro (LSAM); 1, GSMNP, Porters Creek, N35°40.790’ W83°23.855’, 4 October 2006 – 1 April 2007, SP24A -CWD Rear 1, M. Ferro (LSAM); 2, GSMNP, Porters Creek, N35°40.790’ W83°23.855’, 4 October 2006 – 1 April 2007, SP23B -CWD Rear 1, M. Ferro (LSAM); Blount Co.: 1, GSMNP, Tremont, N35°37.308’ W83°40.447’, 4 October 2006, SN2 CWD5 2 of 3, M. Ferro (LSAM); 1, GSMNP, Tremont, N35°37.308’ W83°40.447’, 24 June – 14 July 2006, SN25C -CWD Rear 1, M. Ferro (LSAM); 1, GSMNP, Goldmine trail, 35°38.454’ N 83°54.484’ W, 18 March 2008, under pine bark, M. Gimmel (LSAM); 1, GSMNP, Gregory’s Cave trail, 35°36.560’ N 83°48.407’ W, 17 March 2008, under pine bark, M. Gimmel (LSAM).

Redescription. Length 2.1 – 3.0 mm. Body brown, glossy; abdominal tergites V – VI blackish brown; antennomeres 1 – 3, 11, mouthparts, legs, and posterior part of elytra yellowish brown (Fig. 1 j). Head pubescent, with microsculpture and large punctures (distance between punctures more than their diameter). Antennomeres 1 – 3 elongate, 4 longer than wide, 5 – 10 transverse (Fig. 11 a). Carina on each side of ventral surface of head incomplete, fading before attaining gular suture.

Mouthparts. Labrum transverse, bearing 3 pairs of short setae, and 8 pairs of long setae, a-seta, b-seta, and many pores (Fig. 11 b). Labium with two distal setae in a longitudinal row, and several pores in median area; a pair of setal pores, 2 pairs of real pores and several pseudopores present in lateral area (Fig. 11 c). Labial palpi bearing 12 setae (a – h, α – δ), γ-seta close to f-seta (Fig. 11 d). Mentum trapezoidal, bearing 4 pairs of main setae (b, u, v, w), a pair of additional setae, and many pores (Fig. 11 e).

Thorax. Pronotum approximately 1.25 times wider than long; pubescent, with microsculpture and large punctures (distance between punctures more than their diameter). Mesoventrite with distinct reticulate microsculpture. Mesoventrite incompletely carinate, carina extending approximately 1/3 to 1/2 length of mesoventrite. Metaventrite with setigerous punctures. Elytra wider than pronotum and abdomen; approximately 1.54 times longer than wide; approximately 1.46 times longer than pronotum, latero-posterior margin emarginate, pubescent, with large setigerous punctures (distance between punctures more than their diameter). Hind wings present.

Abdomen. Abdominal tergite VI approximately 1.87 times wider than long. Male abdominal tergite VIII with posterior margin emarginate, bearing 4 pairs of main setae, and many additional short setae and pores (Fig. 11 f). Male abdominal sternite VII with many pores in anterior one-fourth; sternite VIII with posterior margin rounded, bearing 6 pairs of main setae, and many additional short setae and pores (Fig. 11 g). Female abdominal tergite VIII with posterior margin emarginate, bearing 4 pairs of main setae, many additional short setae and pores (Fig. 11 h), sternite VIII with posterior margin rounded, bearing 5 pairs of main setae, and many additional short setae and pores (Fig. 11 i).

Genitalia. Paramere as in Fig. 11 j. Median lobe as in Fig. 11 k. Spermatheca as in Fig. 11 l.

Type locality. Ohio (Cincinnati).

Distribution. CANADA: Ontario, Quebec; USA: Alabama, Florida, Ohio, Pennsylvania, Tennessee, Virginia. Locations where L. (U.) cribratula has been collected in GSMNP as in Map 1.

Habitat. This species appears to be associated with CWD. Two specimens were collected from under pine bark. All other specimens were emergent or sifted from CWD collected in both primary and secondary forests: seven from decay class I, four from decay class II, four from decay class III – IV, and eight from decay class V. No specimens were collected by sifting leaf litter at the same times and locations.

MAP 1. Locations where Leptusa specimens have been collected in GSMNP. Leptusa opaca Casey: 8, 12; L. pseudosmokyiensis: 5, 9; L. smokyiensis: 4, 6, 9; L. stocksi: 6; L. carolinensis: 3, 5, 7, 11; L. gimmeli: 11; L. pusio: 7, 9, 10; L. brevicollis: 12; L. ferroi: 3, 4; L. cribratula: 1, 2, 3, 7, 9, 10.