Chinavia erythrocnemis,

Matesco, Viviana C., Fürstenau, Brenda B. R. J., Bernardes, Jorge L. C., Schwertner, Cristiano F. & Grazia, Jocélia, 2009, Morphological features of the eggs of Pentatomidae (Hemiptera: Heteroptera) *, Zootaxa 1984, pp. 1-30: 10-12

publication ID 10.11646/zootaxa.1984.1.1

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scientific name

Chinavia erythrocnemis


Chinavia erythrocnemis  , Chinavia longicorialis  , Chinavia obstinata  , and Chinavia pengue 

( Figs. 2–4View FIGURES 1–10, 37– 67View FIGURES 26–40View FIGURES 41–55View FIGURES 56–70; Tab. 2)

Eggs barrel-shaped; operculum circular and convex; chorion surface reticulated, light brown ( Figs. 2–4View FIGURES 1–10). Chorion surface was erroneously described as white-translucent and granular in C. obstinata ( Matesco et al. 2003)  ; in fact, a light brown color of the eggs is due to a pigmented chorion, and its sculpture fits the reticulated pattern described by Bundy & McPherson (2000). Aero-micropylar processes white, clavate at apex. With the development of embryo, red eyes, and dark brown ruptor ovis become visible ( Fig. 2View FIGURES 1–10). Ruptor ovis triangular, translucent, dark brown at the base and along the median line ( Matesco et al. 2003, 2006, 2007, 2008 b).

Egg surface, in SEM, in a reticulated sculpture pattern ( Figs. 37, 38View FIGURES 26–40, 47, 48, 54View FIGURES 41–55, 59, 60View FIGURES 56–70), with polygonal, often hexagonal, cells ( Figs. 39, 40View FIGURES 26–40, 61View FIGURES 56–70). In C. longicorialis  , chorion has shallow polygonal cells, with slightly defined contour ( Fig. 49View FIGURES 41–55). Those cells projected inward in a funnel, which seems to bear a hole ( Figs. 41, 44, 52View FIGURES 41–55). Lateral walls of egg with more or less regular cells ( Figs. 39, 40View FIGURES 26–40, 49View FIGURES 41–55, 61View FIGURES 56 – 70, 62View FIGURES 56–70); at oval area where eggs are fixed to each other in the egg mass or to the substratum sculpture pattern is altered ( Figs. 37View FIGURES 26–40, 47View FIGURES 41–55, 59View FIGURES 56–70).

Near aero-micropylar processes, polygonal cells smaller and deeper, with irregularly projected rims ( Figs. 42, 50, 55View FIGURES 41–55, 63View FIGURES 56–70). The eclosion line, within the ring of aero-micropylar processes, is well delimited, devoid of depressions, and marked by a wrinkled area with dense capillary projections ( Figs. 42, 50View FIGURES 41–55, 56View FIGURES 56–70). At the operculum, polygonal cells are smaller, deeper, and less delimited ( Figs. 43, 51View FIGURES 41–55, 57, 64View FIGURES 56–70); sometimes seeming to bear a hole ( Figs. 44, 52View FIGURES 41–55). In C. pengue  , cells at lateral wall of the egg ( Fig. 62View FIGURES 56–70) as well as at the operculum ( Fig. 65View FIGURES 56–70) have a blind bottom.

Aero-micropylar processes clavated, with a stalk that decreases in diameter toward the base, and a bulbous apical part, which bears an apical opening ( Figs. 45, 50, 53View FIGURES 41–55, 56, 63, 67View FIGURES 56–70). Aero-micropylar processes surface in a spongy texture ( Figs. 46, 53View FIGURES 41–55, 58, 67View FIGURES 56–70). In C. pengue  , fine connector sheets were found among adjacent aero-micropylar processes or between the process and adjacent area of the anterior pole ( Figs. 63, 66, 67View FIGURES 56–70).