THE ENITHARES (Hemiptera-Heteroptera: Notonectidae) OF THE ...

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378 Pacific Insects Vol. 10, no. 2 and £# of templetonii could be found. Brooks (Th. unpubl.) listed only S& of simplex and W of templetonii. Despite their disimilar appearance, the relative measurements of head and pronotum are the same. The most striking and seemingly unique differences in Enithares is between the metaxyphii. The base of the metaxyphus of the $ is flat (fig. 61), whereas that of the tf is strongly convex (fig. 58). SPECIMENS EXAMINED : Holotype $ of "TV. simplex" Ceylon and lectotype £ & paralectotype of "AT. templetonii Ceylon (BMNH). Ceylon, Uinidoma, S. P., 26.1.1958, K. L. A. Perera, 2$$ & 2 o.o. ; Ceylon, Pundaloya, IIL1897, E. E. Green, 5££ ; Ceylon, Mai, 1889, H. Fruhstrofer, 2£$ (SECK) ; Ceylon, Haputale, IX. 1907, 1$ (LENINGRAD) ; Ceylon, Adam's Peak, S. L. Hora, 1 $ ; Ceylon, Diyatalawa, IX. 1925, Hora, 1 £ ; Ceylon, Haputale, IX. 1907, Distant Coll., 1 £ (AMNH) ; Ceylon, Thwaites, 1872, det. E. triangularis Kirk. 1897, 4
1968 Lansbury : Oriental Enithares (<strong>Notonectidae</strong>) 379 1899, Termeszetr. Fuz. 12 : 40.— Kirkaldy, 1904, Wien. Ent. Ztg. 23 : 98, 108, 133.— Oshanin, 1909, Verzeichnis der Palaearktischen Hemipteren 3 : 974.— Oshanin, 1912, Verzeichnis der Palaearktischen Hemipteren 4 : 91.— Esaki, 1926, Ann. Hist. Nat. Mus. Nat. Hung. 24 : 187 (E. formosanus Matsumura synonymised with Sinica).—Hoffmann, 1931, Lingnan Sci. J. 9(4) : 432-33.— Esaki, 1932, Bull. Biol. Soc. Japan 2 : 210 ; 1932a, Iconogr. Ins. Japan : 1692 : fig. 3343 (tf).— Lundblad, 1933, Arch. Hydobiol. Suppl. 12: 146.—Wu, 1933, Lingnan Sci. J. 12:214.— Hoffmann, 1933, Lingnan Sci. J. 12 : 255.— Wu, 1935, Cat. Insect. Sinen. 2 : 576.— Esaki, 1940, Notes Ent. Chin. 7(5) : 129-30.— Hoffmann, 1941, Lingnan Sci. J. 29: 61.— Brooks, 1948, J. Kans. Ent. Soc. 21: 40.— Lansbury, 1964, Ann. Zool. Warsz. 22 : 208-10, fig. 3.— Asahina et al, 1965, Icon. Insects Japon Col. Nat. Edit. 3 : 107, pl. 54, fig.7. Enithares formosana Matsumura, 1913, Thousands Insects Japan, Addit. 1: 97, pl. xi, fig. 7.— Esaki, 1915, Ent. Mag. Kyoto 1: 32.— Matsumura, 1915, Ent. Mag. Kyoto 1: 110; 1931, 6000 Illust. Ins. Jap. Emp. Tokyo : 1227. tftf & W. Length 8.5-9.5 mm, maximum width 2.9-3.5 mm. Boat-shaped species, broadest across abdomen closest to hind margin of pronotum. Color : Somewhat variable, eyes gray to reddish brown. Pale form; yellowish brown. Dark form; vertex and anterior 1/2 of pronotum yellowish brown or creamy yellow tinged with green. Posterior 1/2 of pronotum hyaline, appearing black due to scutellar color showing through. Scutellum either entirely yellowish brown or with a triangular black area basally. Clavus and corium hyaline appearing either dark gray or black due to dorsal pigmentation showing through. Opaque zone of membrane hyaline yellowish, remainder hyaline. Both forms with legs and abdomen ventrally yellowish brown. Structural characters : Head in dorsal view rounded (fig. 68). Greatest width of head 5/7 pronotal humeral width, between 2.33-2.5 X anterior width of vertex and usually just over 2X median head length, occasionally just less than 2X. Synthlipsis just less than 1/2 anterior width of vertex. Head length variable, either shorter, equaling or longer than pronotum and always greater than anterior width of vertex. Pronotal humeral width nearly 3X median length, lateral margins diverging, about 1/2 median length; posterior margin almost straight. Dorsal margin of pronotal fovea directed caudad before turning laterad behind eyes (fig. 68). Nodal furrow straight, directed cephalad, less than its own length removed from membranal suture. First fore tarsus of tf (fig. 65) with a dense patch of black spines. Mesotrochanter short and angulate (fig. 62). Male 1st mid-leg tarsus with 5 stout spines (fig. 64), outer claw of mid-leg thickened and bent inwards (fig. 64). Chaetotaxy of tf mid-leg (fig. 62 & 64). Hind femur of tf with a stout pointed projection on ventral surface (fig. 66). Lateroventral margins of abdomen with very stout spines (fig. 67). Metaxyphus (fig. 69) basal 3/4 clearly divergent, apically rounded. Male genital capsule as in fig. 63, parameres very short and rounded, posterior lobe inclined cephalad, parallel-sided. Lectotype
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