Otiocerini Muir, 1917

Tribe Otiocerini Muir, 1917

Apreliminary key to New World genera of Otiocerini

1. Antennae bearing elongated appendage(s) (e.g., Figs. 2 B, C View Fig ; 5B, D, E, H View Fig ) .................................... 2

1*. First antennal segment devoid of appendages ( Figs. 5A, C, F, G View Fig ) .................................................. 6

2. Costal margin of forewing scalloped, bearing 2 or more lobes (Fennah 1945, fig. 41 as lquitosa Fennah); mesonotum usually bearing two large tubercles; South America, Trinidad .... Kubilaya Koçak & Kemal

2*. Costal margin of forewing not lobed; mesonotal tubercles absent ................................................. 3

3. Head in lateral view rounded and weakly projected ( Fig. 5D View Fig ), length in front of eye less than the widest length of the eye; forewing white with dark spots (e.g., Fig. 1E View Fig ); Guyana ..................................................................................................................................... Labicerus Erichson

3*. Head in lateral view strongly projected in front of eyes, 2x or more at the widest length of the eye ( Figs. 5B, E, H View Fig ) ................................................................................................................................. 4

4. General color rose or reddish; in lateral view, dorsum of head sinuate ( Fig. 5B View Fig ); dorsal margin of wings in repose sharply angled dorsal in apical third; forewings with dusky spots in most cells; USA ..................................................................................................................... Apache Kirkaldy 4*. General color white or yellow; in lateral view, dorsum of head flat ( Fig. 5E View Fig ) or rounded ( Fig. 5H View Fig ), dorsal margin of wings nearly straight; forewings usually without dusky spots in most cells (although some dark spots may be present); USA, Mesoamerica ........................................ 5

5. In lateral view, the demarcation between vertex and frons is obtusely angular ( Fig. 5E View Fig ) ........................................................................................................................ Otiocerus Kirby

5*. In lateral view, the demarcation between vertex and frons is smoothly rounded ( Fig. 5H View Fig ) ........................................................................................................................... Shellenius Ball

6(1). Head in lateral view inclined, bluntly conical, and up-projected ( Figs. 5A, G View Fig ) ......................... 7

6*. Head in lateral view anteriorly rounded or barely projected in front of eyes ( Figs. 5C, F View Fig ) ........ 9

7. Antennae short, less than ¾ length of frons, head little produced (Fennah 1952, fig. 38); Panama ................................................................................................................... Homometria Fennah

7*. Antennae longer, length equal or exceeding that of frons; head distinctly produced ( Figs. 5A, G View Fig ) ............................................................................................................................................ 8

8. Humeral angle of the forewing with an elongated, triangular projection (Bartlett et al. 2014, fig. 64J) ................................................................................................................................... Sayiana Ball

8*. Humeral angle of the forewing with a low rounded projection or none at all ......... Anotia Kirby

9(6). Head broadly rounded ahead of eye, head projection about equal to eye width ( Fig. 5C View Fig ); MP forked from ScP+R near basal cell; Mesoamerica .................................................. Cobacella Fennah

9*. Head narrowly projected ahead of eyes, head projection much less tan eye width ( Fig. 5F View Fig ); MP forked from SC+R well distad of basal cell ..................................................................................... 10

10. Head smoothly rounded into a semicircle in lateral view ( Fig. 5F View Fig ), wings white with dark markings ( Fig. 3 View Fig ); pedicle of antennae flattened; Panama .................................... Platonax Metcalf

10*. Head angulately rounded in lateral view (Fennah 1952, fig. 35A), wings and body with red suffusion; pedicle of antennae rounded in cross-section; Guyana ................. Platocerella Fennah