Coelioxys (Cyrtocoelioxys), MITCHELL, 1973

COELIOXYS (CYRTOCOELIOXYS) MITCHELL, 1973

Type species: Coelioxys costaricensis Cockerell, 1914 .

Diagnosis: The most distinctive characteristic of C. ( Cyrtocoelioxys ) spp. is the shape of S 6 in females: constricted near midlength, always ending in a spine-like process and with its lateral margins always bearing a fringe, which in most of the species is conspicuous, dense, and formed by long, brown hairs ( Fig. 46 View Figures 46 and 47 ). Additionally, the T 6 in females ends in a short spine-like process, its dorsal carina is strong, and separates two elliptical depressions on either side, and the subapical area is covered with tomentum and scattered long, erect, dark hairs ( Fig. 46 View Figures 46 and 47 ). These characteristics are similar to those found in females of the Old World subgenus C. (Liothyrapis), but in those the spine-like process of T 6 is always elongate and conspicuous ( Fig. 9 View Figures 8–13 ) and their compound eyes are bare ( Fig. 4 View Figures 4 and 5 ). In males (among the species in which holotypes have been studied), except in C. costaricensis , the postgradular area of T 3 bears a circular fovea composed of small punctures, it is hairy and surrounded by punctures forming a transverse area (Fig. 47). This characteristic is also observed in males of C. (Dasycoelioxys) ( Fig. 80 View Figures 77–80 ), but they can be differentiated by the lack of a carina on the basal concavity of T 1 (Fig. 43).

Comments: This is the most speciose subgenus in the Neotropics, with more than 60 species names assigned to it ( Moure et al., 2012; Ascher & Pickering, 2015). An updated list with the description of three new species, two synonyms, and also a key to the Mexican species are provided by Rocha-Filho (2015). A few species, denoted in the following list with a section sign symbol (§), occur in the Nearctic region ( Baker, 1975; Ascher & Pickering, 2015).

List of species: Coelioxys abnormis Holmberg, 1887 , Coelioxys acanthosara Rocha-Filho, 2015 *, Coelioxys alayoi Genaro, 2001 *, Coelioxys alisal Toro & Fritz, 1993 *, Coelioxys ambrosettii Holmberg, 1918 , Coelioxys angelica Cockerell, 1905 §, Coelioxys balasto Toro & Fritz, 1993 *, Coelioxys brachyvalva Friese, 1921 *, Coelioxys burgdorfi Cockerell, 1931 *, Coelioxys chichimeca Cresson, 1878 *, Coelioxys cisnerosi Cockerell, 1949 *, Coelioxys cochleariformis Friese, 1921 *, Coelioxys coloboptyche Holmberg, 1887 , Coelioxys columbica Friese, 1921 *, C. costaricensis *, Coelioxys danielperezi Genaro, 2009 *, Coelioxys deani Cockerell, 1909 §, Coelioxys digitata Friese, 1921 *, Coelioxys dobzhanskyi Moure, 1951 , Coelioxys duckei Friese, 1921 *, Coelioxys fimbriata Friese, 1921 *, Coelioxys floridana Cresson, 1878 *§, Coelioxys fossulata Friese, 1921 *, Coelioxys giacomellii Holmberg 1916 , Coelioxys gilensis Cockerell, 1898 §, Coelioxys gonaspis Cockerell, 1924 §, Coelioxys hirtiventris Popov, 1946 *, Coelioxys humahuakae Holmberg, 1909 , Coelioxys issororensis Cockerell, 1923 *, Coelioxys jordiana Rocha-Filho, 2015 *, Coelioxys lactea Rocha-Filho, 2015 *, Coelioxys leopoldensis Friese, 1921 *, Coelioxys leopoldinae Friese, 1921 *, Coelioxys litoralis Holmberg, 1888 , Coelioxys macaria Holmberg, 1916 , Coelioxys marginata Friese, 1921 *, Coelioxys modesta Smith, 1854 §, Coelioxys nigrofimbriata Cockerell, 1919 *, Coelioxys noa Toro & Fritz, 1993 *, Coelioxys obscuriventris Friese, 1921 *, Coelioxys obtusivalva Friese, 1921 *, Coelioxys obtusiventris Crawford, 1914 §, Coelioxys paradoxa Friese, 1921 *, Coelioxys

398 L. C. ROCHA FILHO AND L. PACKER paranensis Schrottky, 1920, Coelioxys paraguaya Moure, 1943 *, Coelioxys pauloensis Friese, 1921 *, Coelioxys pedregalensis Holmberg, 1916 , Coelioxys pilivalva Friese, 1921 *, Coelioxys puncticollis Friese, 1921 *, Coelioxys quaerens Holmberg, 1903 *, Coelioxys quechua Toro & Fritz, 1993 , Coelioxys rhadia Holmberg, 1916 , Coelioxys rugicollis Friese, 1921 *, Coelioxys rugulosa Friese, 1908 *, Coelioxys saltensis Toro & Fritz, 1993 *, Coelioxys sanguinicollis Friese, 1921 *§, Coelioxys sanguinosa Cockerell, 1912 *, Coelioxys schulzi Holmberg, 1909 , Coelioxys scitula Cresson, 1872 *§, Coelioxys spatulata Friese, 1921 *, Coelioxys speculifera Cockerell, 1931 *§, Coelioxys spinosa Dewitz, 1881 , Coelioxys subspinosa Friese, 1921 *, Coelioxys subtropicalis Holmberg, 1887 , Coelioxys surinamensis Friese, 1921 *, Coelioxys tabayensis Schrottky, 1920 , Coelioxys tastil Toro & Fritz, 1993 *, Coelioxys tiburonensis Cockerell, 1924 §, Coelioxys trancas Toro & Fritz, 1993 *, Coelioxys tridentata (Fabricius, 1775) , Coelioxys triangula Friese, 1906 *, Coelioxys unidentata Friese, 1922 *, and Coelioxys zonula Smith, 1854 *.