2. Genus Crovettia Olmi, 1984

Crovettia Olmi 1984: 84; 1996b: 60; Olmi et al. 2000: 145; He & Xu 2002: 82; Virla & Olmi 2008: 369; Moya-Raygoza & Olmi 2010: 86; Xu et al. 2013: 43; Olmi & Virla 2014: 30; Olmi & Xu 2015: 33.

Biaphelopus Olmi 1984: 95 (synonymized by Olmi 1996b); type species: Biaphelopus masneri Olmi 1984, by monotypy and original designation; Olmi 1991: 124; 1996b: 60.

Paraphelopus Olmi 1991: 120 (synonymized by Olmi 1998d); type species: Paraphelopus townesi Olmi 1991, by original designation.

Type species. Crovettia theliae (Gahan 1918), by original designation.

Diagnosis. ♀: fully winged (Fig. 18A); epistomal suture touching antennal toruli (as in Fig. 18C); occipital ca- rina complete; antenna without ADOs; palpal formula 5/2, 5/3, 6/2, or 6/3; forewing with only costal cell enclosed by pigmented veins (as in Fig. 18D) (rarely with C and R cells completely enclosed by pigmented veins: character not present in Afrotropical species (Figs 18A, B)); forewing with pterostigma present and 2r-rs&Rs vein straight (as in Fig. 18D), or angled between proximal and distal parts (character not present in Afrotropical species (Figs 18A, B)); course of forewing veins not marked by dark stripes; hind wing hyaline, with costal vein, without dark medial longitudinal stripe (Fig. 18A); protarsus not chelate; tibial spurs 1/1/2. ♂: fully winged winged (Fig. 19); epistomal suture touching antennal toruli (Fig. 18C); occipital carina complete; palpal formula 5/2, 5/3, 6/2, or 6/3; forewing with only costal cell enclosed by pigmented veins (Figs 18C) (or with C and R cells completely enclosed by pigmented veins (as in Figs 18A, B): character not present in Afrotropical species); forewing with pterostigma present and 2r-rs&Rs vein straight (Fig. 18D), or angled between proximal and distal parts (character not present in Afrotropical species); course of forewing veins not marked by dark stripes; hind wing (Fig. 19) hyaline, with costal vein, without dark medial longitudinal stripe; basivolsella situated completely below distivolsella apex (Figs 20 A- C); tibial spurs 1/1/2.

Distribution. Afrotropical, Australian, Oriental, Nearctic and Neotropical regions. Present at the Oriental bor- der of the Palaearctic region (Nepal).

Hosts. Membracidae (Guglielmino & Olmi 1997) .

World species. 16 species are known, one in the Afrotropical region.

Biology. Species of Crovettia are known for their completely endophagous parasitism and poliembriony. Their biology was studied in Nearctic species (Matausch 1909, 1911; Kornhauser 1916, 1917, 1919; Gahan 1918).