Aphelidesminae

Almeida, Thaís Melo De, Shelley, Rowland M. & Rafael, José Albertino, 2018, Xanthotropis, a new genus in the Neotropical millipede subfamily Aphelidesminae (Diplopoda, Polydesmida, Aphelidesmidae), Zootaxa 4471 (2), pp. 351-360 : 353

Key to genera of Aphelidesminae (based on adult males).

1. All paranota without anterolateral teeth.................................................................... 2

- Paranota of metaterga 2–4 with one anterolateral tooth each ( Fig. 3C )............................................ 3

2. Gonopodal prefemur long, acropodite short, about 1.5X as long as prefemur, with distal, elongated lamella ( Fig. 2A )....................................................................................... Aphelidesmus Brölemann

- Prefemur short, acropodite long, about 3X as long as prefemur; with one distal (a) and one opposite proximal (b) laminae ( Fig. 2B )................................................................................... Ochrotropis Jeekel 3. Acropodite curving ventrally distad ( Fig. 2C ).............................................. Haematotropis Jeekel - Acropodite entirely sublinear ( Figs. 4A–D )................................................. Xanthotropis , n. gen.

Figures

FIGURE 2. Gonopodal configUrations of select aphelidesmine genera showing relatiVe lengths of the telopodital prefemora and acropodite. A. Aphelidesmus, A. junki GoloVatch, Hoffman & Spelda, 2004, right gonopod, lateral View. B. Ochrotropis, O. guianensis (Chamberlin, 1923), left gonopod, lateral View (modified from Jeekel, 2000). C. Haematotropis, H. callipa (Peters, 1864), right gonopod, medial View. Scale lines: 1.00 mm.

FIGURE 3. Somatic featUres of Xanthotropis media n. comb. A. Head and left antenna, anterior View (right antenna missing). B. CollUm and tergites 2–3, dorsal View. C. Right paranota of rings 2–4, dorsal View; the red arrows denote the anterolateral teeth. D. Rings 17–19 and telson, dorsal View. Scale lines: 1.00 mm.

FIGURE 4. Gonopodal featUres of Xanthotropis media n. comb. A. Left gonopod, lateral View. B. The same, medial View. C. The same, dorsal View. D. Right gonopod, dorsal View (modified from GoloVatch et al., 2004). Scale lines: A–C (0.5 mm), D (1000 µm).