Anopheles sinensis Wiedemann

Rueda, Leopoldo M., Brown, Tracy L., Kim, Heung-Chul, Klein, Terry A., Thongkukiatkul, Amporn & Sherwood, Van, 2009, Description and comparison of morphological structures of the eggs of Anopheles hyrcanus group and related species (Diptera: Culicidae) from the Republic of Korea, Zootaxa 2268, pp. 23-40 : 27

2. Anopheles sinensis Wiedemann

( Fig. 3 B, 4B, 5B, 6B)

Size: Length 315.63–536.50 um (mean 467.37 + 68.90 um, n = 10); width 52.43–145.00 (mean 76.72 + 30.7 um, n = 8) (Table 1). Color: Black. Overall appearance: Boat-shaped in both ventral and dorsal views, anterior end blunt, posterior end blunt, sometimes pointed. Ventral surface concave, dorsal surface curved, float relatively short and wide in dorso-ventral plane, length 147.42–298.20 um (mean 246.98 + 49.22 um, n = 7); width 47.25–96.25 um (mean 67.08 + 16.25 um, n = 7). Dorsal and lateral surfaces: All surfaces uniformly covered with mostly hexagonal and pentagonal, but occasionally quadrilateral outer chorionic cells or plastron-type cells ( Fig. 3 B), each longer than wide, long dimension oriented in long axis of egg. Interior of each cell with perforated meshwork, surrounded by an elevated, palisade-like outer chorionic reticulum. Cell area 131.87–273.40 um (mean 196.03 + 50.42, n = 26) (Table 1). Float fairly short, about 0.53 length of egg; ratio of float length and width, and length in proportion to egg length and number of ribs as in Table 1. Ribs towards both ends of float wider than those at middle part, rarely striated on dorsal sides; number of ribs per float 20–26 (mean 23 + 1.63, n = 13). Ventral surface. Deck continuous, narrows in mid-line near center of float, degree of narrowing usually variable; covered uniformly with fine tubercles ( Fig. 4 B). Middle part of deck sometimes covered with thin membranous layer. Frill continuous, shallow along narrowed portion of deck. Lobed ventral tubercles at anterior end of the decks, 5–8 (mean 6.73 + 1.16, n = 15), and at posterior end, 4–8 (mean 6.43 + 1.51, n = 7) (Table 1, Fig. 5 B). Lobed ventral tubercles usually oval or oblong, but occasionally round. Lobes of each anterior ventral tubercle, 5–8 (mean 6.92 + 1.0, n = 24); lobes of each posterior ventral tubercle, 4–9 (mean 7.22 + 1.1, n = 41). Lobes clearly separated, often swollen at ends, outer walls often smooth. Lobes in slightly elevated, striated structures. Anterior end, micropyle. Anterior end slightly more blunt than posterior end. Micropylar collar irregular in outline, with smooth surface, inner edge uniformly and deeply excavated, peaks between excavations tapering to form radial ridges extending about a third or half way across micropylar disc, dividing disc in to sectors ( Fig. 6 B). Number of sectors (or ridges) 6– 9 (mean 7.3 + 1.0, n = 9). Area of micropylar disc 90.25–111.45 um (mean 100.69 + 13.16 um, n = 3), usually with smooth surface.

Figures

FIGURE 3. Anterior dorsal plastron of Anopheles (Anopheles) species. A, An. kleini; B, An. sinensis; C, An. sineroides; D, An. pullus; E, An. lindesayi japonicus; F, An. koreicus; G, An. lesteri; H, An. belenrae. Magnification, 3500 x.

FIGURE 4. Chronic tubercles of middle part of deck of Anopheles (Anopheles) species. A, An. kleini; B, An. sinensis; C, An. sineroides; D, An. pullus; E, An. lindesayi japonicus; F, An. koreicus; G, An. lesteri; H, An. belenrae. Magnification, 3500 x.

FIGURE 5. Anterior ventral tubercles of Anopheles (Anopheles) species. A, An. kleini; B, An. sinensis; C, An. sineroides; D, An. pullus; E, An. lindesayi japonicus; F, An. koreicus; G, An. lesteri; H, An. belenrae. Magnification, 3500 x.

FIGURE 6. Dorsal micropylar discs of Anopheles (Anopheles) species. A, An. kleini; B, An. sinensis; C, An. sineroides; D, An. pullus; E, An. lindesayi japonicus, F, An. koreicus, G, An. lesteri, H, An. belenrae. Magnification, 3500 x.