JOBLOTIA 175 



Wings narrow, hyaline ; petiole of second marginal cell less than one-third as 

 long as its cell, that of second posterior cell much shorter than its cell; basal 

 cross- vein slightly before anterior cross-vein; scales of veins elliptical, brown, 

 with a bronzy reflection, denser and overlapping on apical third of wing. 

 Halteres black, except at base. 



Legs long, slender, black with violet and blue reflection, femora whitish be- 

 neath; spines on hind tibise large; front and mid legs without white markings ; 

 hind legs with a white spot at apex of femora beneath, a white spot on under sides 

 of tibiae beyond middle, tarsi with basal white dashes on under side, becoming 

 progressively longer on each segment and reaching nearly to apex of fifth. Claw 

 formula, 0.0-0.0-0.0. 



Length : Body about 5 mm. ; wing 4.5 mm. 



Life history and habits unknown. 



Interior of Nicaragua. 



Genus JOBLOTIA Blanchard. 



Trichoprosopon Theobald (not Trichoprosopus Macquart), Journ. Trop. Med., iv, 



235, 1901 (without species). 

 Trichoprosopon Theobald (not Trichoprosopus Macquart), Hon. Culic, ii, 283, 1901. 

 Joblotia Blanchard, C. R. See. de Biol., liii, 1046, 1901. 

 Trichoprosopon Giles (not Trichoprosopus Macquart), Gnats or Mosq., 2 ed., 367, 



1902. 

 Joilotia Neveu-Lemaire, C. R. Soc. Biol. Paris, liv, 1331, 1902. 

 Joblotia Neveu-Lemaire, M6m. Soc. Zool. Fr., xv, 218, 1902. 

 Joblotia Theobald, Hon. Culic, ili, 334, 1903. 

 Trichoprosopon Lutz (not Trichoprosopus Macquart), in Bourroul, Mosq. do Brasil, 



55, 1904. 

 Joblotia Blanchard, Les Moustiques, 428, 1905. 

 Joblotia Theobald (in part), Gen. Ins., Culic, 33, 1905. 

 Joblotia Dyar, Proc Ent. Soc. Wash., vii, 47, 1905. 

 Trichoprosopon Coquillett (not Trichoprosopus Macquart), U. S. Dept. Agr., Bur. 



Ent., Tech. Ser. No. 11, 26, 1906. 

 Joblotia Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 225, 1906. 

 Joblotia Dyar & Knab, Can. Ent., xxxlx, 49, 1907. 



Trichoprosopon Theobald (not Trichoprosopus Macquart), Mon. Culic, Iv, 590, 1907. 

 Joblotia Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 248, 1907. 

 Joblotia Williston, Man. No. Amer. Dipt., 3d ed., 108, 1908. 

 Trichoprosopon Peryassu (not Trichoprosopus Macquart), Os Culic. do Brazil, 37, 



1908. 

 Joblotia Pazos (in part), San. y Ben., 11, 42, 44, 1909. 

 Trichoprosopon Theobald (in part, not Trichoprosopus Macquart), Mon. Culic, v, 



556, 1910. 



The type species are: of Trichoprosopon Theobald, Trichoprosopon nivipes 

 Theobald, and of Joilotia Blanehai'd, Trichoprosopon nivipes Theobald. 



Geneeic Diagnosis op Adttlt: 



Proboscis rather long and slender, hardly swollen at the tip. Palpi short in the 

 female, nearly as long as the proboscis in the male, very slender. Antennae with 

 the joints subequal in the female, the last two joints long in the male, each joint 

 in the male and the female with a minute secondary subapical whorl, in the male 

 the median joints shortened and thickened at the insertions of the primary whorl. 

 Clypeus with coarse or fine hairs. Vestiture of flat, appressed scales, the head with a 

 collar-like row of erect, forked scales at the nape, the mesonotum without setae on 

 the disk. Eyes dorsally contiguous. A pair of coarse bristles projecting forward at 

 vertex. Prothoracic lobes moderate, well separated dorsally. Abdomen subcylin- 

 drical, blunt at the tip. Legs long and slender, ciliate in some species; claws small, 

 equal and simple In the female; in the male unequal on the front and mid legs, the 

 larger claw sometimes with a tooth. 

 Generic Diagnosis or Labva: 



Mandibles large, visible from above in some species; air-tube without pecten, with 

 a hair-tuft near the base; no lateral comb on the eighth segment, a large tubercle 

 only; anal segment with dorsal plate and a pair of subventral tufts, united by a 

 curved chitinous band; anal gills well-developed. 



