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

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402 Pacific Insects Vol. 10, no. 2 Structural characters : Head in dorsal view rounded. Greatest width of head about 5/6 pronotal humeral width, just under 3X anterior width of vertex and about 2.5X median head length. Synthlipsis about 1/2 anterior width of vertex. Head length slightly greater than anterior width of vertex and same length as pronotum. Pronotal humeral width almost 3X median length ; lateral margins diverging, 2/3 median length; posterior margin convex, centrally almost straight. Dorsal margin of pronotal fovea directed obliquely caudad before turning laterad behind eyes (fig. 169 & 172). Nodal furrow curved obliquely dorsad, less than its own length removed from membranal suture. Mesotrochanter rounded, chaetotaxy of cT mid-leg (fig. 165-167). Male genital capsule as in fig. 168, parameres short and triangular. Metaxyphus (fig. 170, E. fruhstorferi tf) (fig. 171, E. hippokleides £). SPECIMENS EXAMINED : Lectotype Q and paralectotype Q of E. hippokleides, Java (BUDA PEST). Holotype & of E. fruhstorferi, Ost Java, Tengger Gebirg, H. Fruhstorfer (SECK, not USNM as stated by Brooks, 1948 : 50). Ost Java, Tengger Gebirg, H. Fruhstorfer, 1£ (SECK). Java, Idjen, Blawan, 950 m., VI.1924. Dammerman, l
1968 Lansbury : Oriental Enithares (<strong>Notonectidae</strong>) 403 Color : Pale form, vertex dark brown. Pronotum, scutellum and hemelytra pale opaque yellowish. Dark form, vertex hyaline yellowish brown. Anterior 1/3 of pronotum marginally reddish brown, centrally yellowish, remainder hyaline, posterior 1/3 appearing black due to scutellar color showing through. Scutellum laterally yellowish, centrally reddish brown. Clavus along scutellar suture and hemelytral commissure smoky brown, remainder grayish hyaline. Corium smoky brown at inner angle and along margins of opaque zone, remainder grayish yellow. Opaque zone of membrane smoky brown, remainder smoky hyaline. Both forms with eyes reddish brown, legs and abdomen ventrally yellowish brown. Structural characters : Head in dorsal view rounded. Greatest width of head 3/4 pronotal humeral width, nearly 3X anterior width of vertex and about 2.5 X median head length. Synthlipsis 1/2 anterior width of vertex. Head length variable, either shorter or longer than pronotum and anterior width of vertex. Pronotal humeral width just over 3X median length; lateral margins diverging, 1/2 median length ; posterior margin convex, centrally almost straight. Dorsal margin of pronotal fovea directed caudad from behind eyes (fig. 177). Nodal furrow basally directed dorsad, tip inclined cephalad, less than its own length removed from membranal suture. Mesotrochanter slightly angular (fig. 173), chaetotaxy of the
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THE ENITHARES (Hemiptera-Heteroptera: Notonectidae) OF THE ...

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