The Book of the Fly / A nature study of the house-fly and its kin, the fly plague and a cure

by George Hurlstone Hardy

MUSCIDÆ ACALYPTERÆ—

76 (105). V, 1a distinctly present, nearly as thick as V, 1b, which generally ends in the fore margin at or beyond the middle of the wing (plate V, 31, 32, 34).

77 (84). Vibrissæ present (plate VIII, 2) together with more or less hair.

78 (79). V, 4⁴ four or five times as long as V, 4³ (i.e., X, 5² nearer X⁴ than to wing margin).

Heteroneuridæ, XXXVII

79 (78). V, 4⁴ about equal to V, 4³, or only a little longer.

80 (81). Costa with spines in addition to the ciliation (plate VII, 14).

Helomyzidæ, XXXVI

81 (80). Costa without a row of spines, only ciliated.

82 (83). A, III (5) present, or, if absent, then body never shining black.