Culicidae
Creators: name: Rueda, Leopoldo M.
Publisher: name: Zenodo
Year: 2004
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Culicidae

description: Key for the Identification of Fourth Stage Mosquito Larvae Associated with Dengue Virus Transmission in the Afrotropical Region 1. Head. Antenna with spicules (Fig. 29).......................................................................... 2 Head. Antenna without spicules (Fig. 30).................................................................... 3 2 (1). Abdomen. Siphon long, with siphon index (or ratio of siphon length to siphon maximum width) over 3.5 (Fig. 31). Head. Seta 1 ­A with 1–2 branches (Fig. 29)............. <i>.......................................................................................... Aedes(Diceromyia) taylori</i> Abdomen: Siphon short, with siphon index (or ratio of siphon length to siphon maximum width) less than 3.5 (Fig. 33). Head. Seta 1 ­A with 2–3 branches (Fig. 32)..... <i>......................................................................................... Aedes (Diceromyia) furcifer</i> 3 (1). Abdomen. Comb scale spatulate, without distinctly larger median spine (Fig. 34).. 4 Abdomen. Comb scale not spatulate, with distinct larger median spine (Fig. 35)... 5 4 (3). Abdomen. Seta 1 ­S double (Fig. 36); pecten spine about 6 times as long as wide (Fig. 37), usually with single ventral dentricle, sometimes with 1–2 small basal ventral and dorsal dentricles <i>............................................... Aedes (Stegomyia) africanus</i> Abdomen. Seta 1 ­S single (Fig. 38); pecten spine less than 6 times as long as wide (Fig. 39), usually with 2 ventral dentricles, and with 1–2 small dorsal dentricles...... <i>................................................................................. Aedes (Stegomyia) luteocephalus</i> 5 (3). Abdomen. Ventral brush (4 ­X) with 5 pairs of setae (Fig. 40); seta 4 ­a,b X branched (Fig. 40); comb scale with stout, subapical spines (Fig. 41)....................................... <i>............................................................................................ Aedes (Stegomyia) aegypti</i> Abdomen. Ventral brush (4 ­X) with 4 pairs of setae (Fig. 42); seta 4 ­a, b X single (Fig. 42); comb scale without subapical spines (Fig. 43)........................................... <i>....................................................................................... Aedes (Stegomyia) albopictus</i> Explanation of Notes a <i>Aedes furcifer</i> adult has abdominal terga II–VII with pale scales scattered on both apicolateral and dorsomedian areas. <i>Aedes cordellieri</i> Huang, a closely related species to <i>Ae. furcifer</i>, can easily be distinguished by having abdominal terga II–VII with yellowish scales scattered on apicolateral areas only and no scattered pale scales on dorsomedian areas. b <i>Aedes taylori</i>, <i>Ae.</i> <i>furcifer</i> and <i>Ae. cordellieri</i> adults can be distinguished from other species by the following combination of shared characters: thorax with acrostichal, dorsocentral, prescutellar and lower mesepimeral setae well developed; paratergite with pale scales; scutellum with broad scales on all lobes; wing veins with white and dark broad scales intermixed dorsally; and, femora, tibiae and tarsomeres 1 sprinkled with white scales. The absence of any speckles on the abdominal terga is a reliable specific character for <i>Ae. taylori</i> to separate it from <i>Ae. furcifer</i> and <i>Ae. cordellieri</i>. c <i>Aedes luteocephalus</i> adult can be distinguished from other species by the following combination of characters: scutum with a median­longitudinal yellow stripe; scutellum with all broad white scales on lateral lobes; abdominal terga II–VI each with a basal pale band and basolateral white spots; hindtibia has basal 0.10 to 0.25 white stripe on ventral surface; hindtarsomere 3 with basal 0.50 to 0.80 white stripe; and, hindtarsomere 4 entirely dark. <i>Aedes ruwenzori</i> Haddow and Van Someren can be distinguished from <i>Ae. luteocephalus</i> by the scutellum having broad dark scales on the lateral lobes, and the hindfemur with 3 white patches on the anterior, median and apical areas. d <i>Aedes africanus</i> adult differs from other species by the following combination of characters: scutum with short anterior median­longitudinal white stripe, and with fossal white patch narrow at base along scutal margin; and, hindtarsomere 4 has basal 0.2–0.3 white stripe on ventral surface. <i>Ae. corneti</i> Huang can be distinguished from <i>Ae. africanus</i> by the hindfemur having 3 white patches on the anterior surface. e <i>Aedes opok</i> adult differs from other species by the following additional character: scutum with fossal white patch broad at base along scutal margin. Larval specimens of <i>Ae. opok</i> are not available for this work.
description: Published as part of <i>Leopoldo M. Rueda, 2004, Pictorial keys for the identification of mosquitoes (Diptera: Culicidae) associated with Dengue Virus Transmission, pp. 1-60 in Zootaxa 589</i> on pages 21-26, DOI: 10.5281/zenodo.169153