Anopheles koreicus Yamaha & Watanabe

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 : 31

6. Anopheles koreicus Yamaha & Watanabe

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

Size: Length 423.86–494.24 um (mean 454.16 + 34.16 um, n = 4); width 117.19–133.03 (mean 125.06 + 7.92 um, n = 3) (Table 1). Color: Black. Overall appearance: Boat-shaped in both ventral and dorsal views, anterior end blunt, posterior end slightly pointed, sometimes blunt. Ventral surface slightly concave, dorsal surface strongly curved, float relatively short and wide in dorso-ventral plane, length 258.90–375.28 um (mean 332.89 + 51.97 um, n = 4); width 67.36–130.10 um (mean 87.81 + 28.68 um, n = 4). Dorsal and lateral surfaces: All surfaces uniformly covered with pentagonal and mostly hexagonal outer chorionic cells or plastron-type cells. ( Fig. 3 F), 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 119.51–380.18 um (mean 249.09 + 102.75, n = 17) (Table 1). Float fairly long, about 0.73 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, slightly striated on dorsal sides; number of ribs per float 26–35 (mean 30.40 + 4.16, n = 5). Ventral surface. Deck continuous, slightly widens at both ends of float, degree of widening usually variable; anterior end of deck usually wider than posterior end. Entire deck usually covered by thin ornamented layer, having elongate openings at both ends extending towards middle, with or without round opening at middle; very fine tubercles on deck fairly visible through those layer openings (( Fig. 4 F). Frill continuous, shallow along narrowed portion of deck. Lobed ventral tubercles at anterior end of the deck, 3–4 (mean 3.67 + 0.58, n = 3), and at posterior end, 3–4 (mean 3.25 + 0.50, n = 4), (Table 1, Fig. 5 F). Lobed ventral tubercles usually round, occasionally oval or oblong. Lobes of each anterior ventral tubercle, 6–9 (mean 8.00 + 1.00, n = 16); lobes of each posterior ventral tubercle, 5–9 (mean 6.67 + 1.15, n = 12). 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 half way across micropylar disc, dividing disc into sectors ( Fig. 6 F). Number of sectors (or ridges) 7 (n = 4). Area of micropylar disc 94.11–111.01 um (mean 103.02 + 8.51 um, n = 5), usually with smooth or finely striated 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.