46 MOSQUITOES OF NORTH AMERICA 



with coppery and blue reflections, the venter yellowish silvery, the colors indented 

 on the sides. Legs bronzy black, with a brighter luster beneath. 



Male. Proboscis with a tuft beyond the middle, the tip curved and slightly 

 thickened by scales. Coloration as in the female, except that the mid and hind legs 

 are white-marked beneath. 



Twelve specimens, selected from a series, Tabernilla, Canal Zone, Panama (A. H. 

 Jennings). 



Type no. 12130, U. S. N. M. 



This species was formerly identified as L. durhami Theobald, but differs therefrom 

 most obviously in the color of the postscutellum. 



Description of Female, Male, and Lakva of Limatus cacophbades: 



Female. Proboscis rather long, slightly swollen at tip, labellae small, 

 rounded, with outstanding setae ; vestiture black with bronzy reflection. Palpi 

 minute, about one-tenth as long as proboscis, black, with dense outstanding 

 setae. Clypeus small, rounded triangular, black, slightly pruinose. Antenna 

 moderate, the joints subequal, rugose, coarsely pilose, black; tori subspherical, 

 with a cup-shaped apical excavation, black, silvery pruinose; hairs of whorls 

 sparse, rather long, black. Eyes broadly separated on vertex, black ; a quadrate 

 luteous prominence in front. Occiput small, clothed with flat black scales with 

 a blue and green iridescence, a patch of golden-yellow ones at vertex; cheeks 

 silvery white. 



Prothoracic lobes large, prominent, well separated dorsally, densely clothed 

 with large, flat, elliptical golden scales; a row of black setae on the margin. 

 Mesonotum densely clothed with elliptical, flat, deep-purple scales with metallic 

 reflection; a large wedge-shaped dorsal patch from anterior margin to near 

 middle; an arcuate band on each side, one limb resting on root of wing, these 

 markings of golden scales. Scutellum weakly trilobate, vestiture of dark-violet 

 scales, each lobe with a group of black bristles. Postnotum elliptical, prominent, 

 with a high median carina, deep brown, a tuft of black bristles posteriorly, pre- 

 ceded by one or two flat golden scales. Pleurae brown, coxse yellowish, clothed 

 with elliptical, flat silvery- white scales in patches; a broad area along upper 

 margin of pleurae golden-scaled. 



Abdomen short, subcylindrical, tip truncate, with many terminal pale 

 bristles ; dorsal vestiture black, with a strong coppery and blue reflection ; first 

 abdominal segment clothed with bronzy-brown scales with a dark-blue reflection 

 in some lights, a coppery or golden one in others, numerous pale-yellow hairs ; 

 second abdominal segment with a median, basal, triangular, pale iridescent 

 patch ; venter yellowish-silvery scaled, forming broadly triangular incisions on 

 the sides on the anterior parts of the segments into the black lateral color, most 

 pronounced on fourth, flfth, and sixth segments. 



Wings moderate, hyaline ; petiole of second marginal cell one-third as long 

 as its cell ; that of second posterior cell shorter than its cell ; basal cross-vein 

 distant less than its own length from anterior cross- vein; scales of veins 

 rather broadly triangular, black, with a bronzy reflection, larger and denser on 

 forks of second vein and apices of third and fourth veins. 



Legs rather slender, black, with bronzy and blue reflection, the femora and 

 hind tibiae pale golden beneath, the tibiae and tarsi with bright bronzy luster 

 below. Claw formula 0.0-0.0-0-. 



Length : Body about 2.5 mm. ; wing 2.5 mm. 



Male. Similar to the female. Proboscis angularly roughened beyond the 

 middle, scales at apex also denser and roughened, deep black, marked with 

 silvery luster below between the median and apical black scales. Antennae with 

 the joints hardly shorter than in the female, hairs of whorls somewhat longer, 

 ciliation coarse, sparse. Abdomen short, subcylindrical, somewhat expanded 

 towards apex, with numerous coarse, pale-brown bristles at tip. Hind legs sil- 

 very beneath throughout; mid legs with fourth and fifth joints and all but base 



