AEDES TRIVITTATUS 773 



strigimacula; in a ditch of muddy water associated with Culex coronator and 

 Culex pinarocampa; near a river in some holes in the ground filled with dead 

 leaves, the water blue-back and almost opaque, associated with Lutzia bigoti. 

 Mr. Barber captured a male on a cotton flower. 



Southern Mexico to Central America. 



Cordoba, Mexico, January 20, April 8, 1908 (F. Knab) ; Almoloya, State of 

 Oaxaca, Mexico, July 19, 1905 (P. Knab) ; Cacao, Trece Aguas, Alta Vera Paz, 

 Guatemala, April 8 and 15, 1906 (Schwarz & Barber). 



After a careful study of specimens of cuneatus and argentescens we have 

 reached the conclusion that they represent one species only. The larvae and 

 the male genitalia are the same, while both forms occurred in the same pools. 

 The difference in coloration, therefore, is due to variation, and the name argente- 

 scens may be retained in a varietal sense to designate the form in which the 

 thoracic markings are silvery instead of yellow. The specimens of the form 

 argentescens average smaller than those of cuneatus; this would seem to indi- 

 cate that the coloration is governed by nutrition, poorly nourished specimens 

 becoming paler. There is, besides, considerable variation in the extent of the 

 light subdorsal stripes and in the color of the median stripe ; this latter in some 

 specimens is deep brown like the lateral areas, thus producing a form similar 

 to Aedes trivittatus. 



AEDES TRIVITTATUS (Coquillett) Dyar & Knab. 



Culex trivittatus Coquillett, Journ. N. Y. Ent. Soc, x, 193, 1902. 



Culex trivittatus Smith, Ent. News, xv, 145, 1904. 



Culex trivittatus Felt, Bull. 79, N. Y. State Mus., 333, 1904. 



Culicada trivittatus Felt, Bull. 79, N. Y. State Mus., 391&, 1904. 



Culex inconspicuus Grossbeck, Ent. News, xv, 333, 1904. 



Culex trivittatus Smith, Bull. 171, N. J. Agr. Exp. Sta., 38, 1904. 



Culex trivittatus Britton & Viereck, Rept. Conn. Agr. Exp. Sta., 1904, 269, 272, 273, 



1905. 

 Culex trivittatus Smith, N. J. Agr. Exp. Stat, Rept. Mosq., 286, 1905. 

 Culex inconspicuus Smith, N. J. Agr. Exp. Stat., Rept. Mosq., 295, 1905. 

 Culex trivittatus Blanchard, Les Moustiques, 339, 1905. 

 Culex inconspicuus Smith & Grossbeck, Psyche, xii, 18, 1905. 

 Culicada trivittatus Felt, Bull. 97, N. Y. State Mus., 447, 1905. 

 Culex inconspicuus Dyar, Journ. N. Y. Ent. Soc, xiii, 108, 1905. 

 Aedes trivittatus Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 197, 1906. 

 Aedes inconspicuus Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 199, 1906. 

 Ochlerotatus trivittatus Coquillett, U. S. Dept. Agr., Bur. Ent, Tech. Ser. 11, 18, 1906. 

 Ochlerotatus inconspicuus Coquillett, U. S. Dept Agr., Bur. Ent., Tech. Ser. 11, 21, 



1906. 

 Ochlerotatus trivittatus Dyar, U. S. Dept. Agr., Bur. Ent., Circ. 72, 5, 1906. 

 Ochlerotatus inconspicuus Dyar, U. S. Dept. Agr., Bur. Ent, Circ. 72, 5, 1906. 

 Pseudohowardina trivittata Theobald, Mon. Culic, iv, 224, 1907. 

 Culex inconspicuus Theobald, Mon. Culic, iv, 438, 1907. 

 Aedes trivittatus Busck, Smiths. Misc. Colls., quart, iss., lii, 63, 1908. 

 Culex (Ochlerotatus) triviatus Viereck, 1st Ann. Rept. Comm. Health Pa., 470, 1908. 

 Culex (Ochlerotatus) inconspicuous Viereck, 1st Ann. Rept. Comm. Health Pa., 471, 



1908. 

 Culex inconspicuus Theobald, Mon. Culic, v, 387, 1910. 

 Pseudohowardina trivittata Theobald, Mon. Culic, v, 227, 1910. 

 Aedes trivittatus Morse, Ann. Rept. N. J. State Mus., 1909, 719, 1910. 

 Aedes inconspicuous Morse, Ann. Rept. N. J. State Mus., 1909, 719, 1910. 



Original Description of Ctilex trivittatus : 



Near triseriatus, but with three vittae of blackish scales on the mesonotum. Black, 

 the first joint of antennae and base of second, the coxae and greater portion of femora, 

 yellow; scales of palpi black, those on the occiput light yellow, a large patch of dark 

 gray ones on each side of the middle, the upright ones yellow; scales of mesonotum 

 brassy yellow and with three broad vittae of blackish ones, the median vitta not quite 

 extending to either end of the mesonotum; scales of abdomen black, those at the 

 front angles of the segments and on the venter whitish; scales of legs black, those on 



