Sagola robustula Broun, 1917, 2013

Park, J. - S. & Carlton, C. E., 2014, A revision of the New Zealand species of the genus Sagola Sharp (Coleoptera: Staphylinidae: Pselaphinae: Faronitae), The Coleopterists Bulletin (mo 13) 68, pp. 1-156 : 133-134

Sagola robustula Broun, 1917

( Figs. 68f , 69f , 70f , 71 )

Sagola robustula Broun, 1917: 377 . Hudson 1923: 365, 1934: 184; Newton and Thayer 2005b; Nomura and Leschen 2006: 243.

Sagola cordiceps Broun, 1921a: 493 . Hudson 1923: 366, 1934: 184; Newton and Thayer 2005b; Nomura and Leschen 2006: 242. New synonymy.

Sagola aemula Broun, 1921a: 496 . Hudson 1923: 366, 1934: 184; Newton and Thayer 2005b; Nomura and Leschen 2006: 241. New synonymy.

Sagola bipuncticeps Broun, 1921a: 499 . Hudson 1923: 366, 1934: 184; Newton and Thayer 2005b; Nomura and Leschen 2006: 241. New synonymy.

Sagola affinis Broun, 1921a: 500 . Hudson 1923: 366, 1934: 184; Newton and Thayer 2005b; Nomura and Leschen 2006: 241. New synonymy.

Sagola remixta Broun, 1921a: 502 . Hudson 1923: 366, 1934: 184; Newton and Thayer 2005b; Nomura and Leschen 2006: 243. New synonymy.

Type Material. Lectotype of Sagola robustula : NEW ZEALAND: Otago Lakes : 1♂ ( BMNH), glued on rectangular card, “Type” [red label, printed]; “3828. ♂ ” [white label, handwritten]; “New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed] “Hollyford. 19.2.1914.” [white label, handwritten]; “ Sagola ♂ robustula.” [white label, handwritten]; “ LECTOTYPE Sagola robustula Broun Desig. Park and Carlton 2013 ” [red label, printed] . Paralectotype (1 male). NEW ZEALAND: Otago Lakes : 1♂ ( BMNH), glued on rectangular card, “3828. ♂ ” [white label, handwritten]; “ New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed] “Hollyford. 19.2.1914.” [white label, handwritten]; “ Sagola ♂ robustula.” [white label, handwritten] . Syntypes of Sagola aemula . NEW ZEALAND: Mid Canterbury: 1♂ ( BMNH), glued on rectangular card, “4006. ♂ ” [white label, handwritten]; “New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed]; “Mistake. 9.10.1913.” [white label, handwritten]; “ Sagola aemula . ♂.” [white label, handwritten]. 1♂ ( BMNH), glued on rectangular card, “4006. ♂ ” [white label, handwritten]; “Mistake. 9.10.1913.” [white label, handwritten]; “ New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed]; “ Sagola aemula . ♂.” [white label, handwritten]. 2♀♀ ( BMNH), glued on rectangular card, “4006. ♀ ” [white label, handwritten]; “New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed]; “Mistake. 9.10.1913.” [white label, handwritten]; “ Sagola aemula . ♀.” [white label, handwritten] . Holotype of Sagola affinis . NEW ZEALAND: Mid Canterbury: 1♂ ( BMNH), glued on rectangular card, “4012.♂” [white label, handwritten]; “New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed]; “Algidus. 25.9.1913.” [white label, handwritten]; “ Sagola affinis .♂.” [white label, handwritten]. The original description indicates that the specimen was collected on 25 October 1913, but we found a single specimen collected on 25 September 1913. One of them may be misspelled . Holotype of Sagola bipuncticeps . NEW ZEALAND: Mid Canterbury: 1♂ ( BMNH), glued on rectangular card, “4011. ♂ ” [white label, handwritten]; “New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed]; “Mt. Algidus. 25.9.1913.” [white label, handwritten]; “ Sagola ♂ bipuncticeps.” [white label, handwritten]. The original description indicates that the specimen collected in 25 th October 1913, but I found a single specimen collected in 25 th September 1913. One of them may be misspelled . Holotype of Sagola cordiceps . NEW ZEALAND: Otago Lakes : 1♀ ( BMNH), glued on rectangular card, “4002” [white label, handwritten]; “New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed]; “Mt. Alfred. 9.2.1914.” [white label, handwritten]; “ Sagola cordiceps ” [white label, handwritten] . Holotype of Sagola remixta . NEW ZEALAND: Nelson: 1♂ ( BMNH), glued on rectangular card, “4016. ♂ ” [white label, handwritten]; “New Zealand Broun Coll. Brit. Mus. 1922–482.” [white label, printed]; “ Mt. Owen. 27.12.1914.” [white label, handwritten]; “ Sagola ♂ remixta.” [white label, handwritten]. The lectotype designation is required because Broun did not explicitly designate a type specimen, and he mentioned that two specimens were examined ( Broun, 1917: 377). This designation will fix the identity of the species and facilitate its recognition by future workers .

Additional Material (n = 32: 18 males; 14 females). NEW ZEALAND: Fiordland: 2♂♂ 1♀, Fiordland NP, Milford Sound rd, Smithy Creek Campground area, 400m, 44″57.065′S 168″01.155′E, 9 XII 2005, Nothofagus fusca & N. menziesii open forest, FMHD #2005-089, litter, M. Thayer, A. Newton, ANMT site 1170; 1♂, Fiordland NP, Martins Bay Hut, 5 II 1980, R. Scott; 1♂, Thicket Burn, Lake Hauroko, 3 I 1996, J. Nunn; 1♀, Lake Hauroko, Southland, 2 II 1966, J.I. Townsend, mixed moss; 4♂♂, Lake Hauroko, 13 IV 1952, R. Hornabrook; Hawkes Bay: 1♂ 1♀, Waipatiki Res, 23 XII 1983, J.C. Watt, sifted woodmould; Mid Canterbury: 1♂ 1♀, Mt. Algidus nr Methven, 3 XII 1913, T. Hall; Nelson: 1♂ 1♀, Mouth of Karamea River, 22 VI 1967, A.K. Walker, litter; 1♂, Puponga Farm P, 7–10 II 1981, J.W. Early, Malaise trap; 1♂, Karamea, 30 I 1996, J. Nunn; 2♀♀, Oparara River Mouth, 1 I 2011, J. Nunn, under drift wood after flood; 3♀♀, Lake Rotoiti, 27 VII 1965, A.K. Walker, moss; Otago Lakes: 1♂, Makarora, 23–25 I 1978, 500m, S. & J. Peck, litter with carrion; 2♀♀, Makarora, 21 I 1978, G. Kuschel, litter; Taranaki: 1♂, Hawera, High St Swinburns, 27 XII 1976, H.P. McColl, litter; Westland: 2♂♂, Aspiring NP, Douglas Creek at Hwy 6, 65m, 11–18 I 1985, Nothofagus menziesii -hdwd-podocarp forest, A. Newton, M. Thayer 738; 2♀♀, 1.5km n Punakaiki, 50m, 19 XII 1984 – 20 I 1985, hdwd-nikau forest, A. Newton, M. Thayer 720; 1♂, Lake Mahinapua, 6 I 1951, R. Jacob, leaf mould.

Diagnosis. This species can be distinguished from the other species of the insignis speciesgroup by the following combination of characters: body length 2.7–3.0 mm; temporal lobe of male head weakly projecting, as long as eye with flattened ventral surface; ventral surface of male head with transverse setose process behind mouthparts; male elytra rectangular, female elytra subquadrate; shape of antennomeres and genitalia unique to species.

Redescription. Length 2.7–3.0 mm. Body brown, antennae, legs, maxillary palpi, and elytra paler ( Fig. 68f ). Head: Bluntly triangular, widest across eyes ( Fig. 69f ). Antennomere 1 approximately 1.5 times longer than wide, 2–3 subquadrate, 4–7 longer than wide, 8–10 subquadrate. Frontal sulcus deep, reaching midpoint of eye. Anterior frontal fovea round, partially covered by frontal rostrum, posterior frontal fovea round. Eye large and prominent, approximately one-half length of temple. Temporal lobe of male head weakly projecting, as long as eye, with flat ventral surface ( Fig. 69f ). Ventral surface of male head with transverse setose process behind mouthparts ( Fig. 69f ). Thorax: Prosternum as long as wide, widest at one-third length. Male elytra rectangular ( Fig. 68f ), female elytra subquadrate. Male meso- and metathorax trapezoidal, longer than wide, female as long as wide. Abdomen: Male tergite IV with pair of transverse patches of microtrichia reaching middle, patches absent in female. Aedeagus: Median lobe of genitalia broad with pair of triangular processes apically ( Fig. 70f ). Apical lobe subquadrate. Phallobase of median lobe symmetrical and rounded ( Fig. 70f ). Parameres symmetrical and slender, sparsely setose from midpoints to apices ( Fig. 70f ).

Type Locality. Routeburn , north of Lake Wakatipu, Otago Lakes, New Zealand .

Distribution. Fiordland, Hawkes Bay, Mid Canterbury, Nelson, Otago Lakes, Taranaki, Westland ( Fig. 71 : white squares).

Habitat. Specimens of this species were collected using pitfall, yellow pan, flight intercept, and window traps or by sifting leaf and wood litter in broadleaf, podocarp, or Nothofagus forests.

Comments. Specimens of S. robustula can be distinguished from those of other species by the shape of the ventral surface of the male head and antennomeres. The type specimens of S. aemula , S. affinis , S. bipuncticeps , S. cordicep , and S. remixta share these diagnostic characters, and additional specimens have been collected at or near the type locality. For these reasons, we have placed S. aemula , S. affinis , S. bipuncticeps , S. cordiceps , and S. remixta in synonymy with S. robustula .

Figures

Fig. 68. Habitus of Sagola species in the insignis species-group, dorsal views. a) S. insignis, b) S. hectorii, c) S. bipunctata, d) S. angulifera, e) S. eminens, f) S. robustula, g) S. pertinax, h) S. monticola, i) S. laticeps, j) S. castanea, k) S. sheldoni, l) S. mercuryensis, m) S. cuvierensis, n) S. buckleyi, o) S. brumfieldi, p) S. otteai, q) S. boudreauxae, r) S. taegyui, s) S. hanae, t) S. gyudongi, u) S. egmontensis, v) S. boonei, w) S. stewartensis, x) S. jeongnamae. Scale bars = 1 mm.

Fig. 69. Ventral views of male heads of Sagola species in the insignis species-group. a) Sagola insignis, b) S. hectorii, c) S. bipunctata, d) S. angulifera, e) S. eminens, f) S. robustula, g) S. pertinax, h) S. monticola, i) S. laticeps, j) S. castanea, k) S. sheldoni, l) S. mercuryensis, m) S. cuvierensis, n) S. buckleyi, o) S. brumfieldi, p) S. otteai, q) S. boudreauxae, r) S. taegyui, s) S. hanae, t) S. gyudongi, u) S. egmontensis, v) S. boonei, w) S. stewartensis, x) S. jeongnamae. Scale bars = 0.1 mm.

Fig. 70. Sagola species in the insignis species-group. Aedeagi, dorsal views: a) S. insignis, b) S. hectorii, c) S. bipunctata, d) S. angulifera, e) S. eminens, f) S. robustula, g) S. pertinax, h) S. monticola, i) S. laticeps, j) S. castanea, k) S. sheldoni, l) S. mercuryensis, m) S. cuvierensis, n) S. buckleyi, o) S. brumfieldi, p) S. otteai, q) S. boudreauxae, r) S. taegyui, s) S. hanae, t) S. gyudongi, u) S. egmontensis, v) S. boonei, w) S. stewartensis, x) S. jeongnamae. Male heads, dorsal surface: y) S. bipunctata, z) S. eminen. Scale bars = 0.1 mm.

Fig. 71. Known collection localities of New Zealand Sagola species. S. insignis: black circles; S. hectorii: triangles; S. bipunctata: black squares; S. angulifera: stars; S. eminens: white circles; S. robustula: white squares.