X. chloroptera, [34];

X. violacea, [33]

Xylodiplosis, [458], [459]

Xylophagidae, [479]

Xylophaginae, [480]

Xylophilidae, [266]

Xylotrupes gideon, [199]

Yellow-fever-fly, [464]

Yolinus, [558]

Young carried, [556]