A handbook of the gnats or mosquitoes : giving the anatomy and life history of the Culicidæ, together with descriptions of all species noticed up to the present date / by Geo. M. Giles.

  • George Michael James Giles
Date:
1902
Catalogue details

Licence: Public Domain Mark

Credit: A handbook of the gnats or mosquitoes : giving the anatomy and life history of the Culicidæ, together with descriptions of all species noticed up to the present date / by Geo. M. Giles. Source: Wellcome Collection.

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    77. CULEX RUSTICUS, Rossi (1790). = C. punctatus, Meigen (1818) ; = C. quadrimaculatus, Macquart (1834). [Fn. Etrusca, tom. sec. Libarni. (1790), Rossi; “ S. B.” i, (1818) (= punc- tatus), Meigen; “ F. R.” p. 280 (1S96) (= quadrimaculatus).'] Tarsi unbanded ; thorax brownish-grey ; abdominal segments brownish, with black lateral spots. “ Greyish, the abdomen with black spots. Antennae fuscous, with scanty verticillate hairs; proboscis black. Thorax greyish; all the abdominal segments with black spots. Legs fuscous ; hind pair very long; femora paler, but the apex black. Wings dusky, with the internal margin ciliated and the veins scaled, &c. Length.—34 lines (Rossi).” Meigen describes C. punctatus as follows :— “Abdomen ashy-grey, with two rows of black spots, triangular in form; thorax brownish-grey, with four dark lines ; antennae and palpi of the $ , dark brown ; proboscis brown, &c. Length.—4 lines.” Macquart describes G. quadrimaculatus as :— “ Thorax black, with greyish-yellow tomentum, and with the abdomen with quadrangular black spots, &c. Length.—3|- lines.” Mr. Theobald has no doubt as to the above three names being synonymous. 78. CULEX ALBIFASCIATUS, Macquart. (Dipt. Exot, i. 35, 4 (1838), Macquart; Dipt. Argentina, p. 44, Arribalzaga Verh. zool-bot. Gesell. xv, 596, 6 (1865), Phillipp.) Legs unadorned, clothed with brown and grey scales. Thorax black, ornamented with narrow, reddish-brown curved scales, with a median yellow-scaled line and a broad line of yellow scales on each side in front, narrowing behind. Abdomen dusky brown, with a median yellowish-white line spreading out apically on each segment, and with a basal patch of pure white scales on each side of the segments. Ungues of the $ , equal, uniserrated. Head creamy in the middle, dusky at the sides, the linear and forked scales of these areas being of corresponding colours; lateral flat scales yellowish ; proboscis and palpi dark brown, in both sexes ; those of $, with dense fuscous tufts. Pleuras dark brown, with numerous frosty patches. Legs with the femora pale beneath, and with small white knee-spots. Venter with numerous white scales, very dense apically. Halteres with yellow stems and dusky knobs, covered with greyish white scales. Length.—About 5’5 mm. Habitat.—South America; Brazil, Rio de Janeiro, Buenos Ayres, Chili. “ Bites during the daytime, but does not enter houses.”