Diplectrona willandi, Wells & Contents, 2018

Wells, Alice & Contents, Arturs Neboiss Table Of, 2018, Australian Diplectroninae reviewed (Insecta: Trichoptera), with description of 21 new species, most referred to a new genus, Zootaxa 4415 (1), pp. 1-44 : 14

Diplectrona willandi sp. nov.

( Figs 14–16 , 24 , 45–46)

Material examined. Holotype ♂, N Queensland, Fishery Falls , 17°11'S 145°52'E, 10–11.xi.2007, A. Cairns, A. Wells, W. Cairns ( NMV) . Paratypes, Queensland: 2♂, collected with holotype .

Diagnosis. Resembling D. spinata and D. inermis , but lacking discrete spines associated with the phallus; however, it has the endothecal apical angles on the phallic apparatus acute rather than rounded, and sclerotised and spiny in appearance, although visible only in the macerated specimen; in ventral view the phallic apparatus is stout and heavily sclerotised; the lateral margins of tergite X are similarly heavily sclerotised.

Description. Male. Length of each forewing: 5.2–5.5 mm (n = 3); cell ac shallow, but not parallel-sided ( Fig. 24 ); hind wings broadly rounded.

Genitalia ( Figs 14–16 , 45–46 ): Sternite IX shallowly concave, tergites IX and X partially fused, lateral margins darkly sclerotised; gonopods slender, elongate, length of coxopodite about 7x maximum width, harpago about 0.3x length of coxopodite, strongly curved mesally, a small mesal spur at base; phallic apparatus stout, heavily sclerotised ventrally (indicated by shaded area in Fig. 14 ), endotheca apical angles acute, sclerotised.

Female. Unknown.

Distribution. Known only from the type locality in a water catchment reserve just south of Tully in the wet tropics of north-eastern Queensland.

Remarks. The head warts of this species differ from those of others in the genus, being wide and shallow.

Figures

FIGURES 10–16. Diplectrona Westwood 1839, diagnostic features. 10–12, D. spinata (Banks 1939; holotype), ♂ genitalia: 10, ventral; 11, left lateral; 12, dorsal. 13, D. inermis (NSW, Leura, ‘Bridle Vale’ [PT-1057]), ♀ terminal abdominal segments, left lateral. 14–16, D. willandi sp. nov. (holotype), ♂ genitalia: 14, ventral; 15, left lateral; 16, dorsal. Abbreviations: ph = phallic apparatus; VIII, IX, X = abdominal segments VIII, IX, X.

FIGURES 17–31. Diplectrona Westwood 1839 spp., diagnostic features. 17–21, heads, dorsal: 17, D. felix McLachlan 1878 (France, Pyrenees), ♂; 18–19, D. tasmanica Jacquemart 1965 (Pine River, Cradle Mountain Road, Tas.): 18, ♂, and 19, ♀; 20, D. inermis (Banks 1939; NSW, Leura, ‘Bridle Vale’), ♂; 21, D. spinata (Banks 1939; Qld, Springbrook), ♂. 22–24, ♂ right wings, dorsal: 22, D. castanea (Kimmins 1953; Tas., Nelson River at base of Nelson Falls [TRI-15004]), right fore- and hind wings, dorsal; 23, D. spinata (Qld, Branch Creek, Brisbane Riv. Catchment [TRI-30501]), right forewing, dorsal; 24, D. willandi sp.nov. (holotype), right fore- and hind wings, dorsal. 25–26, sectionsof ♂ antennae:25, D. felix; 26, D. inermis. 27– 28, ♂ maxillary palps: 27, D. castanea; 28, D.spinata. 29, D. inermis, ♂ reticulate-walled internal sacs of abdominal segments VIand VII, ventral.30, D. felix, ♂ right lateral filament on abdominal segment V, ventral.31, D.inermis, ♂ leftlateral filament on abdominal segment V, ventral. Scale bars = 2 mm. Abbreviations: ac = anal cell; alw = anterolateral wart; amw = anteromesal wart; A 1+2+3 = fused anal veins A 1, A 2, A 3; dc = discoidal cell; mc = median cell; pw = posterior wart.

FIGURES 32–48. Diplectrona Westwood 1839 spp., genitalia diagnostic features. 32, D. castanea (Kimmins 1953), (Tas., Nelson River at base of Nelson Falls [TRI-15004]), ♂, ventral; 33–34, D. lyelli Neboiss 1977 (synonym of D. castanea; paratype; Tas., Hellyer River Gorge [PT-1043]), ♂ segments IX and X and gonopods: 33, left lateral, and 34, apex of phallic apparatus, left lateral. 35–37, D. inermis (Banks 1939), ♂: 35, holotype, ventral; 36, holotype, left lateral; 37, Vic., Wilson’s Promontory, Waterloo Bay[PT-1011], ventral. 38–41, D.spinata (Banks 1939), ♂: 38, NSW, BarringtonTops,Upper Williams R. [PT-1835], ventral; 39–40, Qld, Brisbane [TRI-39514]: 39, left lateral, and 40, ventral; 41, Qld, Springbrook [TRI-39496], ventral. 42–44, D. tasmanica Jacquemart 1965 (Tas., Pine River, Cradle Mountain Road; ANIC): 42–43, ♂ genitalia: 42, ventral, and 43, left lateral; 44, ♀, terminal abdominal segments, ventral. 45–46, D. willandi sp. nov. (Qld, Fishery Falls), ♂: 45, ventral;46, left lateral.47–48, D.spinata(Qld, Springbrook[TRI-39426]),♀ terminal abdominal segments:47, ventral;48, left lateral.