Pictorial keys for the identification of mosquitoes (Diptera: Culicidae) associated with Dengue Virus Transmission
Author
Leopoldo M. Rueda
text
Zootaxa
2004
589
1
60
journal article
10.5281/zenodo.169153
b00a915a-4dc9-4e9f-8b72-32ab64056247
1-877354-47-3
169153
78170ADA-B41E-4611-B129-DAC57E733DD5
Key for the Identification of Fourth Stage
Mosquito
Larvae Associated with Dengue Virus Transmission in the North, Central and South
America
, including the Caribbean Islands
1. Head. Seta 1C very stout (
Fig. 137
); seta 4C usually caudad to seta 6C (
Fig. 138
). Abdomen. Setae 1,2IVII stellate (
Fig. 139
); siphon with pecten spines strongly arctuate (
Fig. 140
); pecten spine without subapical dentricle (
Fig. 140
) ....................
................................................................
Ochlerotatus (Gymnometopa) mediovittatus
Head. Seta 1C not stout (
Fig. 141
); seta 4C cephalad to seta 6C (
Fig. 142
). Abdomen: Setae 1,2IVII not stellate (
Fig. 143
); siphon with pecten spines not strongly arctuate (
Fig. 144
); pecten spine with 2 or more subapical dentricles (
Fig. 144
)...... 2
FIGURE 137.
Ochlerotatus (Gymnometopa) mediovittatus
.
FIGURE 141.
Aedes (Stegomyia) albopictus
.
FIGURE 138.
Aedes (Gymnometopa) mediovittatus
.
FIGURE 142.
Aedes (Stegomyia) aegypti
.
FIGURE 139.
Ochlerotatus (Gymnometopa) mediovittatus
.
FIGURE 143.
Aedes (Stegomyia) albopictus
.
FIGURE 140.
Ochlerotatus (Gymnometopa) mediovittatus
(PS, pecten spine).
FIGURE 144.
Aedes (Stegomyia) aegypti
(PS, pecten spine).
2(1). Abdomen. Ventral brush (
4X
) with 5 pairs of setae (
Fig. 145
); seta 4a,b X branched (
Fig. 145
); comb scale with stout, subapical spines (
Fig. 146
) ................... ...........................................................................................
Aedes (Stegomyia) aegypti
Abdomen. Ventral brush (
4X
) with 4 pairs of setae (
Fig. 147
); seta 4a, b X single (
Fig. 148
); comb scale without subapical spines (
Fig. 148
) ....................................... .......................................................................................
Aedes(Stegomyia) albopictus
FIGURE 145.
Aedes (Stegomyia) aegypti
.
FIGURE 147.
Aedes (Stegomyia) albopictus
.
FIGURE 146.
Aedes (Stegomyia) aegypti
.
FIGURE 148.
Aedes (Stegomyia) albopictus
.
Explanation of Notes
a
Ochlerotatus mediovittatus
in the adult stage can be separated from the other members of the genera
Aedes
and
Ochlerotatus
in the Americas using various diagnostic characters, namely: scutum with a narrow medianlongitudinal white stripe; presence of a silver patch of scales or short line in the fossa and above the prealar knob but no patch of scales on or below the prealar knob; posterior pronotum with narrow, curved dark scales; paratergite, scutellar lobes and front of mesothoracic spiracle with broad, flat white scales; hindfemur with a long narrow white line on the anterior surface; hindtarsomeres with pale bands; and, abdominal segments 6–7 not flattened laterally unlike
Ochlerotatus triseriatus
(Say)
(B. A. Harrison, unpublished information).
b
Aedes albopictus
, the Asian tiger mosquito, can be distinguished from related species by the presence of broad, flat white scales on the lateral margin of the scutum just before the level of wing root. When scutal markings are rubbed off,
Ae.
aegypti
can be easily misidentified as
Ae
.
albopictus
.
It can be distinguished by having two separate white scale patches on the mesepimeron whereas they are connected in
Ae
.
albopictus
.