Alipes

Figs 84 – 88

Number of species. 7 (Bonato et al. 2016). Sexual dimorphism. Present in two species.

Diagnosis. Median tooth of labrum well developed. Forcipular tooth-plates present, trochantero-prefemur with well-developed process (Fig. 86). Tergites with some (usually five) longitudinal keels (Fig. 87); well-developed spinules (not tubercles, as noted Edgecombe & Bonato 2011) of various sizes arranged along the keels (“ spinulated keels ”, see above). Space between tergal keels spinulated (not granulated, as noted Edgecombe & Bonato 2011). Sternites lacking both paramedian sutures and longitudinal sulci, sometimes with some (in most species three) shallow depressions. LBS 7 lacking spiracles, the latter with an atrium. Legs with tarsal spur (s). Coxopleural process very short, apically rounded and spineless (Fig. 88). Ultimate legs considerably elongated, prefemur and femur normal, tibia and tarsi strongly flattened forming an oval leaf-shaped structure (Fig. 85), with stridulatory grates on opposite surfaces of tibia and tarsus 1; pretarsus rudimentary or totally reduced. Ultimate prefemur (Fig. 88) lacking both spines and corner spine; in A. appendiculatus Pocock, 1896 and A. calcipes Cook, 1897 prefemur with a median digitiform process attaching close to its base. This process is long in males (fig. 214 in Attems 1930) and rudimentary in females and is similar to that of Parotostigmus males.

(!) Alipes Imhoff, 1854 Figs 84 – 88

Remarks. Treated as a genus by Edgecombe & Bonato (2011: 402), Vahtera et al. (2012 a: 7, 2012 b: 235, 2013: 581), Joshi & Edgecombe (2018: 1318). The most recent morphological accounts on Alipes are Lewis (2001) and Iorio (2003).

Type species. Alipes multicostis Imhoff, 1854 (by monotypy).