Pinkfloydia Hormiga & Dimitrov, 2011

Hormiga, Gustavo, 2017, The discovery of the orb-weaving spider genus Pinkfloydia (Araneae, Tetragnathidae) in eastern Australia with description of a new species from New South Wales and comments on the phylogeny of Nanometinae, Zootaxa 4311 (4), pp. 480-490 : 481

Pinkfloydia Hormiga & Dimitrov, 2011

Type species: Pinkfloydia harveii Dimitrov & Hormiga, 2011

Diagnosis (modified from Dimitrov & Hormiga 2011): Pinkfloydia can be easily distinguished from all other tetragnathid genera by the conspicuously enlarged PME placed on short ocular protrusions and by the conical and distinctively elevated cephalic area; all other eyes are placed at the same level on the prominent cephalic region and are much smaller in size ( Fig. 1 ). Males of Pinkfloydia differ from other tetragnathid males in having several conspicuously large macrosetae at the base of the paracymbium ( Figs. 2A, B , F, 3C, H) and an area of the cymbium covered with numerous modified short setae (cuspules) concentrated dorsally on the cymbial ectomedian process ( Figs. 2C, D ). In addition, in Pinkfloydia the male palp has a well-developed metaine embolic apophysis and an embolus that carries numerous short denticles ( Figs. 2A , F, 3B, G); the cymbium has prominent cymbial ecto-basal and cymbial ecto-median processes ( Figs. 2A , F, 3C, H). Females are diagnosed by the presence of a flat epigynal plate that has numerous pores opening on its ventral surface ( Fig. 2E ; no similar plate has been described in any other member of Tetragnathidae ). Copulatory openings are displaced caudally and hidden by the distal edge of the epigynum in a transversal groove ( Fig. 3E ).

Figures

FIGURE 1. A – F, Pinkfloydia rixi n. sp. A, B, E, male (holotype); C, D, F, female (paratype). A, C, lateral. B, D, dorsal. E, prosoma, anterolateral. F, prosoma, anterior. Scale bars: all 1.0 mm, except E, F (0.5 mm).

FIGURE 2. A – E, Pinkfloydia rixi n. sp. (male holotype and female paratype); F, P. harveii Dimitrov & Hormiga (form Western Australia, Austin Bay Nat. Res., WAM T 98595). Arrow in A and F point out to diagnostic characters. A, F, male palp, ventral. B, male palp, ventral. C, D, dorsal and ectal respectively (arrow, cymbial ectomedial process. E, epigynum, ventral. Abbreviations: C, conductor; CEBP, cymbial ectobasal process; E, embolus; MEA, Metainae embolic process; P, paracymbium; T, tegulum. Scale bars: A, E, 0.1 mm; all other, 0.2 mm.

FIGURE 3. A – E, Pinkfloydia rixi n. sp. (male holotype and female paratype); F – H, P. harveii Dimitrov & Hormiga (form Western Australia, Austin Bay Nat. Res., WAM T 98595). A, male palp, ventral. B, embolic division, ventral. C, paracymbium, ventral. D, epigynum, ventral. E, epigynum (cleared), dorsal. F, male palp, ventral. G, embolic division, ventral. H, paracymbium, ventral. Abbreviations: C, conductor; CEBP, cymbial ectobasal process CEMP, cymbial ectomedial process; E, embolus; MEA, Metainae embolic process; P, paracymbium; S, spermathecae; T, tegulum. Scale bars: A, F, D, 0.2 mm; all other, 0.1 mm.