Iamarra multitheca, Álvarez-Padilla & Kallal & Hormiga, 2020

Álvarez-Padilla, Fernando, Kallal, Robert J. & Hormiga, Gustavo, 2020, Taxonomy And Phylogenetics Of Nanometinae And Other Australasian Orb-Weaving Spiders (Araneae: Tetragnathidae), Bulletin of the American Museum of Natural History 2020 (438), pp. 1-107 : 1-107

Iamarra multitheca , sp. nov.

Figures 6 , 56–60

TYPE MATERIAL: Female holotype and male allotype from NE Queensland, 3 km W. Bones Knob 17° 13′ S, 145° 25′ E, 1100 m. 10 December 1995, Monteith, Cook & Thompson, between trees and logs of Pyrethrum sp. ( QM)

DIAGNOSIS AND DESCRIPTION: See genus diagnosis and description. Female description based on specimens (TEAU015, TEAU020 to 22, TEAU041). Male description based on specimens (TEAU014, TEAU041).

VARIATION: Males (N = 5) total length 3.44– 4.20. Cephalothorax length 1.82–2.09, width 1.39–1.58. Femur length 2.88–3.31. Females (N = 5) total length 3.54–3.84. Cephalothorax length 1.49–1. 67, width 1.17–1.35. Femur length 2.43– 2.85. The epigynum triangular plate base varies from straight to slightly curved.

ETYMOLOGY: The species epithet refers to the characteristic spermathecae of this species, which are conspicuously divided several globular clusters (from the Greek word theca a chest, box, or other container).

DISTRIBUTION: This species is endemic to Queensland (fig. 60B).

NATURAL HISTORY: Iamarra multitheca is found exclusively in the tropical region of northern Queensland. These spiders build dense, horizontal webs, which may or may not have open hubs, at the base of tree trunks (fig. 6).

REMARKS: This species was misidentified in Wheeler et al. (2017) as “ Dolichognatha sp. GH59.”

MATERIAL EXAMINED: N = 130. AUSTRA- LIA: Queensland, 3 km W. Bones Knob , 17° 13′ S, 145° 25′ E, 1100 m, Monteith, Cook & Thompson, 10 December 1995, trees and logs of Pyrethrum sp. 2 males, 4 females, 2 immatures (Holotype and allotype taken from this specimen series) QM S38211 ; Atherton Tablelands, Rose Gums Wilderness Retreat , 12.4 km ENE Malanda, 17° 18′ 51.1″ S, 145° 42′ 8.6″ E, 770 m, G. Hormiga & L. Lopardo, 15–16 March 2006, 1 female (GH0150), GWU ; Atherton Tablelands, Wongabel State Forest, 10.8 km west of Malanda , 17° 19′ 55.4″ S, 145° 30′ 1.9″ E, 740 m, G. Hormiga & L. Lopardo, 16 March 2006, 2 males, 1 female, 4 immatures, GWU. 1 female (image vouchers TEAU015 and TEAU021), GWU ; Atherton Tablelands, Wongabel State Forest, 10.8 km west of Malanda , 17° 19′ 55.4″ S, 145° 30′ 1.9″ E, 740 m, G. Hormiga & L. Lopardo, 16 March 2006, 1 male (image voucher TEAU014), GWU ; Atherton Tablelands, Wongabel State Forest, 10.8 km west of Malanda , 17° 19′ 55.4″ S, 145° 30′ 1.9″ E, 740 m, G. Hormiga & L. Lopardo, 16 March 2006, 1 male, 3 females, 4 immatures, GWU ; Crater Lakes National Park Lake Barrine, 17° 14′ 41.5″ S, 145° 38′ 31″ E, 808 m. G. Hormiga, N. Scharff, & J. Pedersen, 9–10 February 2012, Rainforest Walk Trail, night collection, 1 female, GWU ; Crater Lakes National Park Lake Barrine, 17° 14′ 41.5″ S, 145° 38′ 31″ E, 808 m. G. Hormiga, N. Scharff, & J. Pedersen, 9–10 February 2012, Rainforest Walk Trail, night collection, 8 males, 17 females, 4 immatures, GWU ; Crater Lakes National Park Lake Barrine, 17° 14′ 41.5″ S, 145° 38′ 31″ E, 808 m. G. Hormiga, N. Scharff, & J. Pedersen, 9–10 February 2012, Rainforest Walk Trail, night collection, 1 male, 1, female, 5 immatures (GH1142), GWU ; Crater Lakes National Park Lake Barrine, 17° 14′ 41.5″ S, 145° 38′ 31″ E, 808 m. G. Hormiga, N. Scharff, & J. Pedersen, 9–10 February 2012, Rainforest Walk Trail, night collection, 1 female (G. Hormiga field image photos 8069-8077GH), GWU ; Crater Lakes National Park Lake Barrine, 17° 14′ 41.5″ S, 145° 38′ 31″ E, 808 m. G. Hormiga, N. Scharff, & J. Pedersen, 9–10 February 2012, Rainforest Walk Trail, night collection, 1 female (photo voucher 8078-8082GH), GWU ; Crater Lakes National Park Lake Barrine, 17° 14′ 41.5″ S, 145° 38′ 31″ E, 808 m. G. Hormiga, N. Scharff, & J. Pedersen, 9–10 February 2012, Rainforest Walk Trail, night collection, 1 female (G. Hormiga field photos 8083-8090GH), GWU ; Atherton Tablelands, Lake Tinaroo, Danbulla State Forest , 17° 10′ 30″ S, 145° 39′ 34″ E, 810 m. G. Hormiga, M. Kuntner, & F. Álvarez, 21 April 2002, dry forest, 1 female (photo voucher R7/18-24GH), GWU. 1 female (photo voucher R7/25-31GH), GWU ; Atherton Tablelands, Lake Tinaroo, Danbulla State Forest , 17° 10′ 30″ S, 145° 39′ 34″ E, 810 m. G. Hormiga, M. Kuntner, & F. Álvarez, 21 April 2002, dry forest, 1 female, 1 male, GWU ; Atherton Tablelands, Lake Tinaroo, Danbulla State Forest , 17° 10′ 30″ S, 145° 39′ 34″ E, 810 m. G. Hormiga, M. Kuntner, & F. Álvarez, 21 April 2002, dry forest, 2 males, GWU ; Atherton Tablelands, Lake Tinaroo, Danbulla State Forest , 17° 10′ 30″ S, 145° 39′ 34″ E, 810 m. G. Hormiga, M. Kuntner, & F. Álvarez, 21 April 2002, dry forest, 1 female, GWU ; Atherton Tablelands, Lake Tinaroo, Danbulla State Forest , 17° 10′ 30″ S, 145° 39′ 34″ E, 810 m. G. Hormiga, M. Kuntner, & F. Álvarez, 21 April 2002, dry forest, 5 females (variation vouchers images TEAU020, TEAU022), GWU ; Atherton Tablelands, Lake Tinaroo, Danbulla State Forest , 17° 10′ 30″ S, 145° 39′ 34″ E, 810 m. G. Hormiga, M. Kuntner, & F. Álvarez, 21 April 2002, dry forest, 1 male, 1 female, GWU ; Atherton Tablelands, Land Rd., Rose Gums Wilderness Retreat ca. 13 km NE of Malanda, ridge trail behind Bowebird Cabin , 17° 18′ 50.6″ S, 145° 42′ 10.6″ E, 725 m, G. Hormiga, N. Scharff, & J. Pedersen, 8 14 February 2012, general collecting, 3 females, GWU ; Atherton Tablelands, Mount Hypipamee National Park, near the Crater , 17° 25′ 35.8″ S, 145° 29′ 8.9″ E, 945 m. G. Hormiga, N. Scharff, J. Pedersen, 11–13 February 2012, 3 females (behavioral voucher) GWU ; Atherton Tablelands, Tully Falls National Park S of Ravenshoe , Charmillin Creek , Wabunga Wayemba , 17° 42′ 0.8″ S, 145° 31′ 20.8″ E, 931 m. G. Hormiga, N. Scharff, J. Pedersen 12 February 2012, Rainforest walkabout, 1 female, GWU ; Atherton Tablelands, Wongabel State Forest , 17° 9′ 54″ S, 145° 30′ 8.6″ E, 765 m, G. Hormiga, N. Scharff, J. Pedersen, 13 February 2012, 6 males, 10 females (1 male, 1 female, SEM vouchers TEAU041), GWU ; Bellenden Ker National Park Palmerston Hwy. 29.3 km SSW of Innisfail, Wallichen Falls area , 17° 36′ S, 145° 47′ E, 217 m. G. Milledge, 23 April 1998, rainforest, 1 male, KS52440 ; Bellenden Ker Range , 1/ 2 km S Cable Tower No 7, 17° 17′ 30.13″ S, 145° 49′ 32.29″ E, 500 m, 1–7 November 1981, 1 male, 2 females, 1 immature, QM S27787 ; Charmillin Creek , 17° 42′ S, 145° 31′ E, 940 m. G. Monteith, 1 December 1997, trees and logs Pyrethrum sp. 1 male, 2 females, 3 immatures, QM S43100 ; Millaa Millaa Falls , 17° 30′ S, 145° 36′ E, 834 m. G. Monteith, 23–24 November 1994, 3 males, 3 females, 2 immatures, QM S47055 ; Upper Isley Ck. , 17° 3′ S 145° 41′ E, 750 m. Monteith & Janetzki, 29 November 1993, trees and logs Pyrethrum sp. 2 males, QM S31911 .

Figures

FIGURE 6. Iamarra multitheca, adult female webs at the base of trees from Crater Lakes National Park, Queensland, Australia. A. Finished web (DSC_8086). B. Unfinished web (several turns of the nonsticky temporary spiral remain in the web; DSC _8070; photos: G.H.).

FIGURE 56. Iamarra multitheca (female: TEUA015, TEAU020; male: TEAU014, TEAU041). A. Female, dorsal habitus. B. Pedipalp, expanded. C. Female, lateral habitus. D. Epigynum, caudal. E. Female, ventral habitus. F.Epigynum, ventral. G. Male, frontal habitus. H. Epigynum, dorsal digested. I. Female, frontal habitus. Scale bars: A, C, E, 1.0 mm; B, 0.2 mm; D, F, H, 0.1 mm; G, I, 0.5 mm.

FIGURE 57. Iamarra multiteca pedipalp (TEAU014). A. Ventral. B. Mesal. C. Apical. D. Ectal. Scale bars: 0.2 mm.

FIGURE 58. Iamarra multitheca (TEAU041). A. Epigynum, caudal. B. Epigynum, apical. C. Epigynum, accessory glands. D. Pedipalp, embolus detail. E. Pedipalp, paracymbium and ectal processes detail. F. Pedipalp, apical. Scale bars: A, B, D–F, 0.1 mm; C, 0.02 mm.

FIGURE 59. Iamarra multitheca (TEAU041). A. Pedipalp, ventral. B. Pedipalp, ventral (schematic and cleared). C. Pedipalp, ectal. D. Pedipalp, dorsal. E. Epigynum, ventral. F.Epigynum, caudal. G. Epigynum, dorsal. Scale bars: 0.5 mm.

FIGURE 60. Distribution of new genera in Queensland. A. Harlanethis. B. Iamarra.