(!) Ethmostigmus Pocock, 1898

Figs 101–105

Type species. Scolopendra trigonopoda Leach, 1817 (by subsequent designation of Attems 1930).

Diagnosis. Median tooth of labrum well developed. Forcipular tooth-plates present, trochantero-prefemoral processes virtually absent (Fig. 102). Tergites consistently lacking longitudinal keels. Sternites with paramedian sutures and/or sulci both developed to varying degrees (figs 25, 26 in Schileyko & Stoev 2016). LBS 7 with spiracles, spiracles virtually without atrium (Fig. 103). Legs with tarsal spur(s). Coxopleural process (Fig. 105) from moderate (fig. 34 in Schileyko & Stagl) to very long and large (Fig. 104), only short in some Australian species (e.g., E. curtipes Koch, 1983). Ultimate legs of “common” shape (Fig. 101), but in a few species—for example in Ethmostigmus rubripes rubripes (Brandt, 1840) —these legs may be much shortened and broadened (becoming pracrically “pincershaped”) as a result of geographic variability (see Schileyko & Stagl 2004: 120). Prefemur of the ultimate leg with spines plus well-developed corner spine (Figs 101, 105); claw-shaped pretarsus in most species neither elongated nor enlarged, rarely as long as tarsus 2.

Number of species. 17 (Edgecombe & Bonato 2011), 22 (Bonato et al. 2016), 15 (Joshi & Edgecombe 2018), 19 (Joshi & Edgecombe 2019).

Sexual dimorphism. Unknown.

Remarks. Treated as a genus in Edgecombe & Bonato (2011: 402), Vahtera et al. (2012a: 7, 2012b: 235, 2013: 584), Schileyko & Stoev (2016: 258), Joshi & Edgecombe (2018: 1316), Siriwut et al. (2018: 1005), Joshi & Edgecombe (2019: 1). The most recent morphological account on Ethmostigmus is Joshi & Edgecombe (2018).