Arcyphysa rossi (Kimmins)

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 : 31

Arcyphysa rossi (Kimmins)

Diplectrona rossi Kimmins, in Mosely & Kimmins 1953 , 338, 340, fig. 233.

Material examined. Holotype ♂, Queensland, National Park [= Lamington National Park ], 1500–2000 ft, 28.ii.1921, R.J. Tillyard ( BMNH).

Diagnosis. When viewed in lateral aspect this species resembles Arc. angusta . The apicolateral processes on tergite X and the gonopods and the phallus show some similarity to those structures in that species, but in ventral and dorsal views the genitalia of Arc. rossi are distinctive: the apicolateral processes are convergent and tapered to acute apices, not club shaped as in Arc. angusta . In common with Arc. hystricosa, Arc. fraserensis , and Arc. diamontona, Arc. rossi has a sharp spine midapicolaterally on abdominal segment IX, but those species all have more elaborate lateral extensions on tergite IX/X.

Description. See Mosely & Kimmins (1953, 338, 340, fig. 233).

Distribution. Known only from the type locality in south-eastern Queensland.

Remarks. Unfortunately, no further specimens of this species have been recognised, despite examination of a considerable collection of specimens from southern Queensland, including from Lamington National Park. It is understandable that originally this species was confused with Arc. angusta since, in lateral view, the two species show close similarity. However, the two are quite dissimilar in other respects (see Fig. 105 , but compare Figs 104 , 158 , and Mosely & Kimmins 1953, fig. 223c). Given how few specimens of any Arcyphysa species are available in collections, it is perhaps not surprising that no further specimens of Arc. rossi have been collected.

Figures

FIGURES 102–109. Arcyphysa gen. nov. spp., diagnostic features.102–103, Arc.diamontona sp. nov., Vic., Diamond Creek, 7 km SE of Gembrook [PT-1006], ♂: 102, right fore- and hind wings, dorsal, 103, maxillary palp. 104–109, ♂ genitalia. 104– 105, Arc. angusta (Banks 1939; NSW, Styx R. [PT-1005]): 104, ventral, and 105, left lateral. 106–107, Arc. diamontona sp. nov. [PT-1006]:106, ventral, and 107, left lateral.108–109, Arc.fraserensis sp. nov. (Qld, Fraser Island, Pile Valley, nr Central Station [PT-1125]):108, ventral,and 109, leftlateral.Scale bars: Fig.102 = 1 mm; Fig.103 = 0.5 mm.Abbreviations:ac= anal cell; alp = apicolateral process; A 1+2+3 = fused anal veins A 1, A 2, A 3;dc = discoidal cell; cox = coxopodite; fI, fII, fIII, fIV, fV = forks I–V; mc= median cell; har = harpago; ph = phallic apparatus; IX, X = abdominal segments IX, X

FIGURES 146–163. Arcyphysa gen. nov. spp., ♂ diagnostic features. 146–150, heads, dorsal: 146, Arc.angusta (Banks 1939; [PT-1005]); 147, Arc. carnarvona sp. nov. (Qld, Carnarvon Gorge); 148, Arc. satana (Mosely 1953; N Qld, Crystal Cascades, Trib. Crystal Creek); 149, Arc. diamontona sp. nov. [PT-1047]; 150, Arc. hystricosa (Neboiss 1979; Qld, North Stradbroke Island [PT-512]). 151, Arc. diamontana (Vic., Diamond Creek, 7 km SE of Gembrook), ♂ right fore- and hind wings, dorsal. 152–153, Arc. hystricosa [PT-512]: 152, antennal segments; 153, maxillary palp. 154–163, ♂ genitalia. 154–155, Arc. hystricosa [PT-512]: 154, ventral, and 155, left lateral; 156–157, Arc. satana (N Qld, Crystal Cascades, Trib. Crystal Creek): 156, ventral, and 157, left lateral; 158–159, Arc. angusta (NSW, Styx R. [PT-1005]): 158, ventral, and 159, left lateral; 160– 161, Arc. candela sp. nov. (NSW, Brown Mountain [PT-1017]): 160, ventral, and 161, left lateral; 162–163, Arc. diamontona [PT-1047]:162, ventral, and 163, left lateral. Scale bar = 2 mm. Abbreviations: ac = anal cell; alp = apicolateral process; A 1+2+3 = fused anal veins A 1, A 2, A 3;dc = discoidal cell; dalw = divided anterolateral wart; cox = coxopodite; mc = mediancell; har = harpago; ph = phallic apparatus; pw = posterior wart; X = abdominal segment X.