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

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398 Pacific Insects Vol. 10, no. 2 H.E. Milliron, 1# ; Col d'Amieu, 750 rn., 3.III.1960, J. L. Gressitt, 1$ ; Tontouta River, 7.XI.1958, C.R. Joyce, 1$; In Mts above Ouaco, 20.X.1958, C.R.J., 1£; Oua Tom, 19.IX. 1940, F. X. Williams, 4
1968 Lansbury : Oriental Enithares (<strong>Notonectidae</strong>) 399 Bull. Brooklyn Ent. Soc. 29 : 68; 1940, J. Kans. Ent. Soc. 13 : 130, figs.— Sweeney, 1965, Proc. Linn. Soc. N.S.W. 90 : 92. $& & #£. Length 9.5-11 mm, maximum width 3-3.5 mm. Color : Pale form dorsally more or less uniformly opaque yellowish brown. Dark form with eyes pale reddish brown, vertex creamy white. Anterior and median 1/3 of pronotum shining black, grading to reddish brown, posteriorly with a creamy white line, basally appearing black due to scutellar color showing through. Scutellum shining black. Clavus with anterior angle yellowish grading through to black at posterior angle. Corium, anterior angles and lateral margins yellowish, remainder including opaque zone of membrane black. Membrane hyaline gray. Legs, keel and segmental margins of abdomen of both forms pale yellow, remainder blackish. There are many variants between the two extreme color forms described. Structural characters : Head in dorsal view short, broad and rounded. Greatest width of head 4/5 pronotal humeral width, about 2.5 X anterior width of vertex and between 2.25-2.5 X median head length. Synthlipsis just over 1/2 anterior width of vertex. Head length equal to or slightly greater than anterior width of vertex and 4/5 median pronotal length. Pronotal humeral width about 2.5X median length; lateral marging diverging, about 1/2 median length; posterior margin convex, centrally emarginate. Dorsal margin of pronotal fovea curving laterad from behind eyes, tomentose area barely visible from above (fig. 157). Lateral margins of pronotal fovea with a small nodule directed cephalad (fig. 159). Nodal furrow straight, slanting dorsad, less than its own length removed from membranal suture. Mesotrochanter angular (fig. 163). First tarsal segment of & fore leg more or less parallel-sided (fig. 163). Chaetotaxy of # mid-leg as in fig. 161-163. Male genital capsule as in fig. 158, posterior lobe with outer straight, lateral arms of basal plate with a distinct lobe on outer margin, parameres short, apically fingerlike. Metaxyphus as in fig. 164. Holotype
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