Iridonyssus kohouti, Raven, 2015

Raven, Robert J., 2015, & lt; strong & gt; A revision of ant-mimicking spiders of the family Corinnidae (Araneae) in the Western Pacific & lt; / strong & gt;, Zootaxa 3958 (1), pp. 1-258 : 81-83

Iridonyssus kohouti sp. nov.

( Figs 1d , 4d, e , 6d , 7d , 39 ; 40a–d , 41a–d . Map 20)

Material. Queensland: holotype ♂, Homevale , 21°24'S, 148°33'E, sclerophyll by creek, 6 Apr 1975, R . Kohout , QM S31548 . Paratypes: Queensland: 1♂ 1♀, Separation Station , via Duaringa, 23°35'S, 149°47'E, pitfall, 12 Jun 1994, D. Wallace, J. Smith, QM S32644 , QM S32632 ; 1♂, Binjour Plateau , Redvale Rd, 25°33'S, 151°28'E, open forest, pitfall, 23 Sep 1997 – 21 Dec 1997, G. Monteith, D. Cook, QM S44476 ; 1♀, Boat Mt Environmental Park , summit, 26°09'S, 151°59'E, open forest, pitfall, 26 Jan–20 Apr 1995, G. Monteith, QM S50404 ; 1♂, Boggomoss No 4 (near), Taroom, 25°26'S, 150°01'E, pitfall, 11 Nov 1996 – 12 Jan 1997, P. Lawless, H. Janetzki, D. Cook, QM S37251 ; 1♂, Bondoola ( DW6 , Stonier), 23°11'S, 150°41'E, open forest, pitfall, 23 Oct 1990 – 22 Mar 1991, D. Wallace, R . Raven , QM S19688 ; 1♂, same locality, 22 Mar 1990, D. Wallace, R . Raven, K. Williams, QM S39544 ; 1♂, Brigalow Res Stn (site 5), 24°48'S, 149°45'E, softwood scrub, pitfall, 29 Oct–16 Dec 2000, D. Cook, G. Monteith, QM S56390 ; 1♂ 1♀, Brigalow Res Stn (site 5), 24°48'S, 149°45'E, softwood scrub, pitfall, 16 Dec 2000 – 28 Mar 2001, D. Cook, G. Monteith, QM S56385 ; 1♀, Bushley Stn ( DW12 ), 23°32'S 150°15'E, open forest, pitfall, 21 Mar–22 Oct 1990, D. Wallace, R . Raven, K. Williams, QM S39543 ; 1♀, Dalrymple NP, 1.6 km from locked gate, 19°49'S, 146°05'E, open forest, pitfall, 28 Sep–13 Dec 2006, R . Raven, A. Amey, B. Baehr, QM S79062 ; 1♀, Enterprise Mine , Blackbutt #2, 27°33'S, 153°27'E, blackbutt, 9 Jan 2002, QMP, QM S55479 ; 1♂ 1♀, Enterprise Mine , Scribbly Gum #2, 27°36'S, 153°27'E, scrubby gully, 10 Jan 2002, QMP, QM S55987 ; 1♂, Expedition Ra NP, Amphitheatre yards, 25°13'S, 149°01'E, open forest, pitfall, 27 Sep–19 Dec 1997, G. Monteith, D. Cook, QM S44256 ; 1♀, Frenchville , 23°20'S, 150°24'E, open forest, pitfall, D. Wallace, R . Raven, K. Williams, QM S22143 ; 1♂, Frenchville ( DW10 ), 23°20'S, 150°34'E, open forest, pitfall, 21 Mar 1991, D. Wallace, R . Raven, K. Williams, QM S43695 ; 1♂, Gayndah, Hospital Hill , 25°38'S, 151°36'E, vine scrub remnant, pitfall, 25 Jan–7 Jun 1999, G. Monteith, G. Thompson, QM S60901 ; 2♀, Mt Gayndah , 25°36'S, 151°32'E, grassland, 21–23 Nov 1998, R . J. Raven , QM S60771 , QM S60770 ; 1♂, same locality, open forest, pitfall, 18 Dec 1998 – 27 Jan 1999, G. Monteith, C. Gough, QM S49984 ; 1♂, Gold Creek Reservoir ( BCC1 ), 27°28'S, 152°52'E, spotted gum, pitfall, 30 Jun–28 Jul 2003, S. Wright, E. Volschenk, QM S62800 ; 1♂, Homevale , 21°24'S, 148°33'E, sclerophyll by creek, 6 Apr 1975, R . Kohout , QM S31549 ; 1♂, Humphery Racetrack , 25°38'S, 151°30'E, open forest, pitfall, 18 Dec 1998 – 27 Jan 1999, G. Monteith, C. Gough, QM S52259 ; 2♂ 2♀, same data but, 11 Oct–18 Dec 1998, QM S50045 , QM S51307 ; 2♂, same data but, 27 Jan–2 Jun 1999, G. Monteith, G. Thompson, QM S51351 , QM S60902 ; 1♂, Hurdle Gully , 14.8 km WSW Monto, 24°55'S, 150°59'E, open forest, pitfall, 20 Dec 1997 – 26 Apr 1998, G. Monteith, QM S60105 ; 1♂ 1♀, Ipswich : Kholo, Coal Ck, 27°34'S, 152°44'E, open forest, pitfall, 13 Jan–16 May 1999, G. Monteith, QM S52261 ; 1♀, Ipswich : Redbank Plains, 27°39'S, 152°51'E, 8 Mar 1998, M. Rix, QM S55394 ; 1♀, Isla Gorge Lookout , 3.6 km NE, 25°10'S, 150°00'E, vine scrub, pitfall, 21 Sep–15 Dec 1997, G. Monteith, D. Cook, QM S44462 ; 2♂ 2♀, Isla Gorge NP, NE corner, 25°10'S, 150°01'E, vine scrub, pitfall, 22 Sep– 15 Dec 1997, G. Monteith, D. Cook, QM S44398 , QM S44529 ; 1♀, Keysland , 26°12'S, 151°44'E, open forest, pitfall, 5 Dec 1994 – 26 Jan 1995, G. Monteith, QM S27986 . Lake Broadwater (Site 1), 27°21'S, 151°06'E, pitfall, QMP & M. Bennie: 11♂, 16 May–23 Nov 1985, QM S50466 ; 1♂ 1♀, 25 Feb–22 Apr 1986, QM S50454 ; 1♀, 25 Mar–16 May 1985, QM S50459 ; 16 ♂ 1♀, 24 Nov 1985 – 3 Jan 1986, QM S50470 ; 1♂ 1♀, 26 Jan–18 Feb 1985, QM S50458 ; 1♂ 1♀, 3 Jan–25 Feb 1986, QM S50460 ; 1♂ 1♀, ( Site 2), 24 Nov 1985 – 3 Jan 1986, QM S50440 ; 1♀, ( Site 2), 22 Apr–12 Jun 1986, QM S50430 ; 1♂ 1♀, ( Site 2), 26 Jan–19 Feb 1985, QM S50444 ; 1♂ 1♀, ( Site 2), 3 Jan–25 Feb 1986, QM S50433 ; 1♂ 1♀ 1j, Site 2, 17 May–24 Nov 1985, QM S50437 ; 1♀, Site 2, 19 Feb–26 Mar 1985, QM S50439 ; 1♂, Lake Murphy Conserve Park , 25°59'S, 149°40'E, open forest, dung pitfalls, & intercepts, 4–5 Mar 1998, D. Cook, L. Hugo, QM S44385 ; 1♂, Lords Table plateau, site 1, 22°39'S, 148°01'E, eucalypt woodland, dung trap, 10 Jan–7 Mar 2006, C.J. Burwell, QM S80278 ; 1♂, Lords Table , SE base, 22°40'S, 148°01'E, eucalypt woodland, pitfall, 9 Jan–4 Mar 2006, R . J. Raven , QM S80084 ; 1♀, Marlborough , 10.7 km NNW, 22°43'S, 149°51'E, semi-evergreen vine thicket, pitfall, 19 Dec 2000 – 24 Mar 2001, D. Cook, G. Monteith, QM S60634 ; 1♀, Moranbah , 5 km S, 22°02'S, 148°03'E, scrub, pitfall, 25 Jun 1997 – 20 Dec 1997, G. Monteith, E. Kruck, QM S44479 ; 1♀, Moreton I, 27°11'S, 153°24'E, 29 Nov 1978, T . Tebble , V . Davies , QM S29418 ; 1♂ 1♀, Mt Bassett , 3 km NNE, 26°25'S, 148°54'E, softwood scrub, pitfall, 13 Dec 2001 – 5 Mar 2002, G. Monteith, D. Cook, QM S79683 ; 1♂, Mt Chalmers (Hollins), 23°18'S 150°38'E, pitfall, D. Wallace, QM S22183 ; 1♂, Mt Deongwar , 3 km S (site 1), 27°14'S, 152°15'E, wet sclerophyll, pitfall, 14 Oct–30 Dec 1998, G. Monteith, D. Cook, QM S50102 ; 1♀, Mt Gavial , 1 km S, 23°36'S, 150°29'E, open forest, pitfall, 17 Dec 1998 – 14 Mar 1999, D. Cook, QM S50051 ; 1♀, Mt Gayndah , summit, 25°36'S, 151°32'E, open forest, pitfall, 9 Oct–19 Dec 1998, G. Monteith, C. Gough, QM S51361 ; 1♀, Mt Hutton , 8.5 km SW, 26°01'S, 148°16'E, softwood scrub, pitfall, 14 Dec 2001 – 8 Mar 2002, G. Monteith, D. Cook, QM S79638 ; 2♂ 1♀, Mt Rose via Taroom, 25°25'S, 149°58'E, vine scrub, pitfall, 23 Sep–15 Dec 1997, D. Cook, QM S44369 , QM S31985 ; 1♂ 1♀, same data but 16 Dec 1997 – 4 Mar 1998, D. Cook, QM S44356 ; 1♀, same data but dung, pitfalls, & intercepts, 4–6 Mar 1998, D. Cook, L. Hugo, QM S44384 ; 1♀, same data but mixed scrub, pitfall, 12 Jul 1997 – 23 Sep 1997, D. Cook, QM S43012 ; Nipping Gully , open forest, pitfall : 1♂ 1♀, 25°40'S, 151°26'E, 25 Jan–2 Jun 1999, G. Monteith, G. Thompson, QM S52257 ; 1♂ 1♀, ( Site 3), 25°41'S, 151°25'E, 9 Oct–18 Dec 1998, G. Monteith, C. Gough, QM S50049 ; 1♂, ( Site 3), 25°41'S, 151°25'E, 21 Aug–9 Oct 1998, G. Monteith, QM S49959 ; 1♂, ( Site 4), 25°40'S 151°26'E, 21 Aug–9 Oct 1998, G. Monteith, QM S51359 ; 1♂, ( Site 6), 25°42'S, 151°26'E, flight intercept trap, 9 Oct–18 Dec 1998, G. Monteith, C. Gough, QM S51360 ; 1♂, ( Site 6), 25°42'S, 151°26'E, 18 Dec 1998 – 25 Jan 1999, G. Monteith, C. Gough, QM S52264 ; 1♂, ( Site 7), 25°41'S, 151°26'E, 18 Dec 1998 – 25 Jan 1999, G. Monteith, C. Gough, QM S52241 ; 1♂, Orchid Beach , Fraser I, 24°58'S, 153°19'E, heathland, pitfall, 7 Mar–1 Oct 1996, R . J. Raven , QM S31290 ; 1♂, Peawaddy Gorge Lookout , 2.6 km W, 24°54'S, 148°02'E, ironbark woodland, pitfall, 24 Aug 2001 – 21 Jan 2002, C. Eddie, R . Perry, G. Graham, QM S70922 ; 1♂, Proserpine , Airport Drive, site XY12, 20°29'S, 148°34'E, closed woodland, pitfall, 5 Nov 2007 – 13 Feb 2008, R . J. Raven , QM S85623 ; 1♂, Proserpine , track N off Airport Drive, site XY11, 20°29'S, 148°33'E, closed woodland, pitfall, 5 Nov 2007 – 13 Feb 2008, R . J. Raven , QM S85489 ; Taroom district , Boggomoss, pitfalls : 1♂, (no. 24), Rock Wallaby Hill , 25°25'S, 149°58'E, vine thicket, 12 Nov 1996 – 12 Jan 1997, P. Lawless, QM S37222 ; 1♂, ( No. 13, BS 20 ), 25°28'S, 150°02'E, pitfall, 11 Nov 1996 – 12 Jan 1997, P. Lawless, QM S37144 ; 1♂, ( No. 21), 25°27'S, 150°03'E, 11 Nov 1996 – Jan 1997, G. Monteith, D. Cook, QM S36368 ; 1♂, ( No. 21), 25°27'S, 150°03'E, 10 Nov 1996 – 13 Jan 1997, P. Lawless, QM S36600 ; 1♂, Taroom District , Boggomoss (No. 21), 25°27'S, 150°03'E, 11 Nov 1996 – Jan 1997, G. Monteith, D. Cook, QM S36215 ; 1♂, ( No. 3), 25°26'S, 150°01'E, 12 Nov 1996 – 12 Jan 1997, G. Monteith, D. Cook, QM S36323 ; 1♂, ( No. 3), 25°26'S, 150°01'E, pitfall, 12 Nov 1996 – 12 Jan 1997, G. Monteith, D. Cook, QM S36359 ; 1♂ 1♀, No. 19, 25°25'S, 150°01'E, 11 Nov 1996 – Jan 1997, D. Cook, G. Monteith, QM S36228 ; 1♂, No 8, 25°27'S, 150°02'E, pitfall, 12 Nov 1996 – Jan 1997, G. Monteith, D. Cook, QM S39566 ; 1♂, Taroom-Cracow Rd , 25°33'S, 150°08'E, bottle tree vine thicket, 14 Nov 1996 – 13 Jan 1997, D.J. Cook, QM S36339 ; 1♂, ( No. 8), 25°27'S, 150°02'E, open forest, 11 Nov 1996 – 12 Jan 1997, P. Lawless, QM S36738 ; 1♂, No. 3, near, 25°26'S, 150°01'E, 11 Nov 1996 – 12 Jan 1997, P. Lawless, QM S36629 ; 1♂, The Bluff , Keysland, 26°15'S, 151°43'E, vine scrub, pitfall, 24 Oct–24 Nov 1995, G. Monteith, QM S41631 ; 1♀, Tooloombah Ck , ( NQ 41 ), 22°42'S, 149°34'E, eucalypt woodland, pitfall, 10 Nov 1991 – 29 Jul 1992, R . Raven, P. Lawless, M. Shaw, QM S24069 ; 1♂, W of Myola Stn on ridge, 20°04'S, 145°28'E, lancewood and fig, open forest, pitfall, 28 Sep–17 Dec 2006, R . Raven, A. Amey, B. Baehr, QM S79043 ; 1♂, Wetheron , 3 km SW, 25°34'S, 151°42'E, open forest, pitfall, 10 Oct–19 Dec 1998, G. Monteith, C. Gough, QM S50070 ; 1♂, Windermere , nr Glenmorgan, 27°17'S, 149°45'E, Dec 90– Sep 91, R . Raven, B.J. Smyth, QM S39537 .

Diagnosis. Unusual in the iridescent peacock green sheen ( Figs 39 , 40a, b ) on both the carapace and abdomen of males and females.

Etymology. The species epithet is in honour of ant taxonomist, Rudy Kohout, who collected some of material with ants and who, to 2013, has named 112 new species of ants.

Description holotype male QM S31548

Carapace 1.96 long, 1.40 wide. Abdomen 2.04 long, 1.44 wide. Total length 4.0.

Colour: carapace and abdomen dark brown with iridescent peacock green sheen; femora dark brown, patellaetarsi progressively paler to yellow brown, sternum, coxae and ventral abdomen dark red brown, maxillae and labium brown. Carapace: highly pustulose, with large white feathery hairs laterally and several fine setae around eyes; steeply sloping sides rising to short straight fovea; posterior striae shallow, rest indistinct, clypeus almost vertical; shallow groove around lateral margins. Eyes: front row recurved, back strongly procurved; all of similar size. Chelicerae: small, vertical, with long but not thick setae over fang; two small close teeth on retromargin, one large and one smaller basal tooth on promargin. Labium: wider than long, inclined but flat. Maxillae: rhomboidal, with basal mound narrowing anteriorly, inner edge with short flat face. Sternum: pustulose setose, domed, indented opposite coxal bases; intercoxal triangles long between I/II and II/III, almost joining carapace between II/III. Legs: Trochanters III and IV with shallow notches, less evident on I and II. Scopula entirely absent. Viewed laterally, femur IV with sharply constricted predistal step; similar by less steeply demarcated on femur III. Large white feathery scales on femora. Scopula absent. Tibiae III and IV wider from base to about 2/3 length. Coxae IV much the largest; all with basal triangular processes entally. RCH a pinhole. ca. 5 trichobothria in straight line on tarsi. Spines: I: fe p1d2; pa v1; ti v2.2.2; me v2.2; ta 0. II: fe d2; pa 0; ti pv1.1 rv1.0; me v2.2. III: fe p2d3r2; pa 0; ti p1r2v1.2.2; me p2r2v0.2.4 in distal whorl. IV: fe p2d3r2; pa 0; ti p2d1r2v1.2.2; me p3r3v1.2.4 in distal whorl. Palp fe p1d1; pa p1; ti p1. Palp: apically grooved; bulb: pyriform with narrowly twisted embolus, subtegulum evident prolaterally. Abdomen: dorsal scute pustulose, iridescent with large feathery scales, scute fused anteriorly to genital scute, extended forward over pedicel in collar, longer ventrally than dorsally; dorsal scute a full cap almost extending to ventral scute; ventral scute on extensive shield from genital scute to tracheal spiracle marked by transverse ridge and an anterior mound on ridge; genital scute without paragenital brackets but with large triangular`wings' over booklungs. Spinnerets: all small; ALS larger than PLS.

Allotype Female QM S32644 as ♂ except as follows:

Carapace 1.94 long, 1.32 wide. Abdomen 2.25 long, 1.62 wide. Totally, 4.9.

Colour: carapace and brown with light green iridescence; dorsal scute similar, extends for 2/3 length, back edge convex, circular, posteriorly dark matt brown with tuft of white hairs above spinnerets; all femora and patellae & tibiae IV dark red brown; patellae–tarsi I–III light brown; distal tibiae IV pallid; genital & tracheal scutes dark red brown; abdomen ventrally otherwise light brown. Carapace: uniform cover of small pustules and white scale hairs; lateral margin lightly serrate. Steep posterior slope with fovea set in advance of edge. Legs: strong subdistal constriction of femur IV, less so on III. Light cover of white feathery and dense cover of black feathery hairs. Spines: I: fe p1d3r1; pa 0; ti v2.2.2; me v2.2. II: fe p1d2; pa 0; ti v.2.2; me v2.2. III: fe p2d3r2; ti p2r2v2.2.2; me p2r2v1.2.3. IV: fe p2d3r1; pa 0; ti p2d1r2v2.2.2; me p3r3v1.2.3. Palp fe p1d2; pa p1; ti p2; ta p2r1. Abdomen: dorsal scute in anterior 3/5 with low pustules and light cover of white scales. No pallid region laterally. Post-epigastric sclerites separated, long, narrow. Tracheal scute roundly long, triangular. Epigyne: with paragenital brackets, subquadrate with subdistal copulatory fossae passing dorsally and leading anteriorly to large short bursa with small lobe on retroventral corner and folding back to smaller spermathecae.

Distribution and Habitat. Widespread in open forest of eastern Queensland, south of Bowen.

Remarks. Males and females from Isla Gorge, Expedition Range show less emerald green in the abdomen and to some extent also in the carapace. A male from Binjour Plateau has green brown iridescent carapace and brown abdomen.

Figures

FIGURE 1. Castianeirinae, comparative lateral carapace: a, Battalus boolathana sp. nov., allotype female, WAM 98/1667; b, Disnyssus helenmirrenae sp. nov., male, QM S50880; c, Nyssus yuggera sp. nov., holotype male, QM S29578; d, Iridonyssus kohouti sp. nov., female, QM S50051; e, Nucastia sp., male, WAM T74052; f, Nucastia supunnoides sp. nov., showing retrolateral cheliceral process (arrow), female, QM S44071.

FIGURE 4. Castianeirinae, female, chelicerae showing fang shield and serrate bristles or spines: a, b, Ticopa dingo sp. nov., a, ventral view; b, prolateral view; c–e, ventral views; c, Battalus adamparsonsi sp. nov.; d, e, Iridonyssus kohouti sp. nov.; f, Nyssus coloripes Walckenaer, 1805, anterior view.

FIGURE 6. Castianeirinae, claw tufts and femur IV, a–d: a, b, e, f, Copa flavoplumosa Simon, 1886 (identified from SEM images by Charles Haddad, 2005 (Zimbabwe: Batoca Gorge & Dibu Dibu River, 17°58'S, 25°57'E, 27–28.X.1990, V. D. & B. Roth, 14 ♂ 5♀, CAS, images by M. Ramírez), axial view (a), and close-up of tuft hairs (b); c, Nyssus coloripes Walckenaer, 1805, retrolateral tarsus IV; d, Iridonyssus kohouti sp. nov., leg IV showing distal femoral constriction and distodorsal setae (arrows), prolateral view. e, f, scanning electron micrographs: e, feathery hairs; f, trichobothrial base and tarsal organ, images by M. Ramírez, see above.

FIGURE 7. Castianeirinae, ventral abdomen, epigyne and spinnerets. a–c, Nyssus yuggera sp. nov., epigyne showing paragenital unsclerotised zones (a) and post-epigastric sclerites (arrow); male ventral abdomen showing ventral scute (b). c, d, e, tracheal spiracle: Nyssus yuggera sp. nov. (c), Battalus helenstarkae sp. nov. (d); Iridonyssus kohouti sp. nov. (e); Nyssus coloripes Walckenaer, 1805, female (f).

FIGURE 39. Iridonyssus kohouti sp. nov., female: habitus (Photo: J. Wright, QM).

FIGURE 40. Iridonyssus kohouti sp. nov., female, QM S50051: a, habitus; b, chelicerae, frontal view showing small chelicerae and fang mound; c, epigastric scute, epigyne and separate post-epigastric sclerites, ventral view; abdomen, ventral view.

FIGURE 41. Iridonyssus kohouti sp. nov., a–d. Holotype male, QM S31548, palpal tibia, bulb and cymbium, a, b: ventral view (a), and retrolateral view (b). Female allotype, QM S3264, c, d: epigyne, external (c), and internal (d).