50 MOSQUITOES OF NORTH AMERICA 



Dendromyia Theobald, Gen. Ins., Culic, 39, 1905. 



Dendromyia and Wyeomyia Theobald, Mosq. or Culic. Jamaica, 8, 1905. 



Wyeomyia Dyar, Proc. Ent. Soc. Wash., vii, 45, 1905. 



Wyeomyia Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 227, 1906. 



Phoniomyia, Wyeomyia, and Dendromyia Coquillett, U. S. Dept. Agr., Bur. Ent., Tech. 



Ser. 11, 27, 1906. 

 Phoniomyia Dyar & Knab, Proc. Biol. Soc. Wash., xix, 141, 1906. 

 Wyeomyia Theobald, Mon. Culic, iv, 596, 1907. 

 Phoniomyia Theobald, Mon. Culic, iv, 598, 1907. 

 Dendromyia Theobald, Mon. Culic, iv, 603, 1907. 



Wyeomyia and Phoniomyia Dyar & Knab, Can. Ent., xxxix, 49, 1907. 

 Wyeomyia Howard, Osier's Modern Medicine, i, 372, 1907. 

 Wyeomyia and Phoniomyia Williston, Man. No. Am. Dipt., 3 ed., 108, 1908. 

 Phoniomyia, Wyeomyia, and Dendromyia Peryassu, Os Culicid. do Brazil, 38, 1908. 

 Wyeomyia, Phoniomyia and Dendromyia Pazos, San. y Ben., ii, 41, 1909. 

 Wyeomyia and Phoniomyia Pazos, San. y Ben., ii, 44, 1909. 

 Phoniomyia, Wyeomyia, Dendromyia Theobald, Mon. Culic, v, 574, 1910. 

 Dendromyia Coquillett, Proc. U. S. Nat. Mus., xxxvii, 531, 1910. 

 Phoniomyia Coquillett, Proc. U. S. Nat. Mus., xxxvii, 588, 1910. 

 Wyeomyia Coquillett, Proc. U. S. Nat. Mus., xxxvii, 620, 1910. 



The type species are : of Wyeomyia Theobald, Wyeomya grayii Theobald ; of 

 Phoniomyia Theobald, Wyeomyia longirostris Theobald; of Dendromyia Theo- 

 bald, Wyeomyia luteoventralis Theobald. 

 Generic Diagnosis of Adult: 



Proboscis short and stout or long and slender, with or without apical swelling. 

 Palpi short in both sexes, the joints fused. Antennas with the joints subequal, 

 similar in the sexes; the males with small, indistinct, subapical whorls on joints. 

 Eyes separated above the antennae by an unusually narrow wedge-shaped or parallel- 

 sided strip of integument. Prothoracic lobes large, well separated dorsally. Vesti- 

 ture of flat, appressed scales, occiput without erect forked scales, mesonotum without 

 setae on the disk. Abdomen subcylindrical, the tip blunt in the female, expanded in 

 the male. Legs long and slender, claws small, simple, equal, in the female, those of 

 mid tarsi unequal in the male or with but a single claw. 



Generic Diagnosis of Laeva: 



Head flattened, broad, rounded, the antennas small; mouth-brushes thick but short; 

 air-tube moderate or long, never very short, with scattered hairs or tufts and some- 

 times pecten of a few spines; a comb of usually separate scales on sides of eighth 

 segment. Anal segment with a dorsal plate, long-haired dorsal and lateral tufts, 

 and usually short subventral pair; anal gills moderate, one pair sometimes more or 

 less aborted. 



Most of the species inhabit the tropical parts of the American continent, one 

 reaching into temperate and subboreal latitudes ; a few species have been recog- 

 nized from the tropics of the Old World, but these we have not seen. 



Phoniomyia was defined on the character of the long, slender proboscis; but 

 we have found such great variation in the condition of this organ in the different 

 species of Wyeomyia that it is impossible to draw any dividing line. Dendro- 

 myia was defined on the character of the scales of the wings, which we find to 

 be untenable. Theobald places Heizmannia Ludlow, from the Philippines, 

 as a synonym of Dendromyia, but wrongly, as we have satisfied ourselves by 

 examining the type. Coquillett indicated Dendromyia ulocoma Theobald as 

 the type of Dendromyia, but Blanchard, five years earlier, had already fixed the 

 type as Wyeomyia luteoventralis Theobald. The strip of integument between 

 the eyes varies in shape in the different species, but in no case are the eyes 

 actually contiguous on the face, in the manner of Sahethes. The colorational 

 characters which we have used in the separation of the species are, we believe, 

 as reliable and constant as any such characters usually are, much more so than 

 they are in the more highly developed culicine genera such as Culex. They are, 

 however, small and difficult to see, so that considerable experience is required 

 before one can use them successfully. The color of the prothoracic lobes, the 

 markings on the occiput and those on the feet are important, but so difficult of 



