Masteriinae Simon, 1889

Passanha, Victor & Brescovit, Antonio D., 2018, On the Neotropical spider Subfamily Masteriinae (Araneae, Dipluridae), Zootaxa 4463 (1), pp. 1-73 : 6

Subfamily Masteriinae Simon, 1889

Diagnosis. The subfamily Masteriinae differs from the other subfamilies of Dipluridae in the apical linear serrula ( Fig. 1A ; Raven, 1991), the anterior median eyes are reduced or absent ( Fig. 3A–C ; Raven, 1991); and the tarsal organ lacks elevation with low and concentric keels ( Fig. 1C–D ). We also propose two new characters to enhance the diagnosis of the subfamily: the shape of the tarsal organ ( Fig. 1C–D ), and trichobothria with corrugated bases and longitudinal keels ( Fig. 1E ), which is not exclusive to Masteriinae ; Barychelidae and Theraphosidae may have similar bases ( Guadanucci, 2012).

Figures

FIGURE 1. Masteriinae morphological characters, Masteria species. A Masteria petrunkevitchi, male (El Verde, Puerto Rico University, Biology Station, Puerto Rico, AMNH), Serrula, lateral view; B M. galipote n. sp., male (MNHNSD-09-1327), cheliceral tooth row, ventral view; C M. golovatchi, female (IBSP 167158), tarsal organ of palp, dorsal view; D M. aguaruna n. sp., male (MACN-AR-30562) tarsal organ of leg I, dorsal view; E M. sabrinae n. sp., male (Plateau de La Concorde, Martinica, CPM), trichobothria of leg IV, dorsal view. Scale bar: A 30µm; B 100µm; C 3µm; D 5µm; E 20µm.

FIGURE 3. Masteria spp. A Masteria barona, male (Saint George County, Arima, Las Lapas Road, Trinidad and Tobago, AMNH), six eyes, dorsal view; B M. hirsuta, female (BM - 17516), australotheline crescent, ventral view; C M. tayrona n. sp., male (San Sebastian de Rabago, Colombia, AMNH), eight eyes, dorsal view; D M. sabrinae n. sp., male (Plateau de La Concorde, Martinica, CPM), tarsal claw of leg II, prolateral view. Abbreviations: A, abdomen; AC, australotheline crescent; MR, membranous region; PMS, posterior median spinneret. Scale bar: A 50µm; B, C, D 100µm.