Studies on the chorionic structure of the eggs of Corixoidea (Hemiptera: Heteroptera) with scanning electron microscopy Author Konopko, Susana Amanda Author Mazzucconi, Silvia Ana Author Ruf, Monica Lopez text Zootaxa 2013 3737 3 223 240 journal article 10.11646/zootaxa.3737.3.2 30503c49-5e46-4768-a1a8-54f08f876c1f 1175-5326 220838 B3CBE9FA-BF92-475D-9BF4-1E2B3DF439C3 Sigara (Tropocorixa) schadei ( Figs. 16–17 ) Chorionic surface densely and finely pored, with tubular projections with apical ramifications (usually more than 2), delimiting small areas (polygonal units?) ( Figs. 16–17 ). Within each area it presents 1–3 of these projections. A nipple structure occurs on the anterior micropylar area ( Fig. 16 ).