90 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
with about 17 teeth; the apical tooth broader and larger than the 
lateral teeth; lateral teeth becoming progressively smaller apically. 
Body glabrous. Comb with numerous scales in a patch. Siphonal 
index about 6.0; four pairs of double siphonal tufts. Pecten with 
numerous teeth on the basal third of the siphon. Anal segment 
completely ringed by the saddle, spiculate dorsally. 
MATERIAL EXAMINED.—A paratype adult male and associated 
terminalia and three other male specimens from the type locality. 
DistriBuTION.—Reported from Mexico and Panama. 
Culex (Culex) pipiens Linnaeus, 1758 
Figures 27a, b 
Culex (Culex) pipiens Linnaeus, 1758, p. 602. 
Culex (Culex) consobrinus Robineau-Desvoidy, 1827, p. 408. 
Culex (Culex) pungens Wiedemann, 1828, p. 9. 
Culex (Culex) fatigans Wiedemann, 1828, p. 10. 
Culex (Culex) aestuans Wiedemann, 1828, p. 11. 
Culex (Culex) ferruginosus Wiedemann, 1828, p. 12. 
Culex (Culex) cubensis Bigot, 1857, p. 329. 
Culex (Culex) serotinus Philippi, 1865, p. 595. 
Culez (Culex) autumnalis Weyenbergh, 1882, p. 23. 
Culex (Culex) penafieli Williston, in Sanchez, 1886, p. 213. 
Culex (Culex) barbarus Dyar and Knab, 1906b, p. 210. 
Culex (Culex) raymondii Tamayo, in Tamayo and Garcia, 1907, p. 37. 
Culex (Culex) atkenii Dyar and Knab, 1908, p. 61. 
Culex (Culex) revocator Dyar and Knab, 1909a, p. 256. 
Culex (Culex) lachrimans Dyar and Knab, 1909a, p. 259. 
Culex (Culex) dipseticus Dyar and Knab, 1909b, p. 34. 
Culex (Culex) comitatus Dyar and Knab, 1909b, p. 35. 
Culex (Culex) aseyehae Dyar and Knab, 1915, p. 112. 
Systmematics.—The Culex pipiens complex is considered by many 
authors to consist of two subspecies: C. pipiens pipiens in the northern 
parts of the world and C. pipiens quinquefasciatus in the tropics. 
Another subspecies, C. pipiens australicus, has been recognized from 
Australia, and two infrasubspecific forms, molestus and pallens, have 
been described. Mattingly et al. (1951) reviewed the complex in 
considerable detail, and numerous subsequent papers have discussed 
distributions and hybridizations among various populations of the 
complex. Since taxonomic characters utilized in this study are 
strictly morphological, all members of the complex will be grouped 
under the broad designation, C. pipiens. 
Culex pipiens is a very plastic species as evidenced by over 70 
synonyms, which are listed by Stone et al. (1959) for members of the 
complex. The various forms freely hybridize both in nature and in 
the laboratory and produce fertile intermediates. The male termi- 
nalia of members of the complex, however, can be readily distinguished 
from other species of the subgenus by the characteristic number and 
