Mormidea cornicollis Stål, 1860

Matesco, Viviana Cauduro, Bianchi, Filipe Michels, Fürstenau, Brenda Bianca Rodrigues Jesse, Silva, Priscila Poock Da, Campos, Luiz Alexandre & Grazia, Jocelia, 2014, External egg structure of the Pentatomidae (Hemiptera: Heteroptera) and the search for characters with phylogenetic importance, Zootaxa 3768 (3), pp. 351-385 : 368

Mormidea cornicollis Stål, 1860

( Figs. 4, 5 , 43–46 ; Tab. 2 )

Eggs barrel-shaped; light yellow prior to embryonic development; operculum round and convex; chorion translucent and spinose ( Fig. 4 ). Eggs darker, with two irregular red stripes and red eyes evident in anterior view after embryonic development ( Fig. 5 ). The eclosion line not evident under SM, and the AMPs are circularly arranged in a row around the anterior pole, white, and moderately long ( Figs. 4, 5 ).

Under SEM, the chorion surface is spinose, and the spines are short. The interconnected spines form faintly distinct polygonal markings at the lateral wall; the sculpture pattern is altered where the eggs were attached to another ( Fig. 43 ). The operculum is similarly sculptured, displaying spines of different sizes, and the polygonal markings are especially apparent ( Figs. 44, 45 ). The eclosion line is not discernible. The AMPs are slender, only slightly clubbed, and bear circular and apical openings ( Fig. 46 ). Their surface is clearly spongy under higher magnification ( Fig. 46 ).

Figures

FIGURES 1 – 12. Eggs of the Pentatomidae viewed with stereomicroscopy. Fig. 1. Podisus nigrispinus (Dallas), egg mass, anterior view. Fig. 2. Euschistus (Lycipta) riograndensis Weiler & Grazia, lateral view. Fig. 3. Euschistus (Mitripus) paranticus Grazia, lateral view. Figs. 4 and 5. Mormidea cornicollis Stål. Fig. 4. Newly laid eggs, anterior view. Fig. 5. Fertile eggs, anterior view. Fig. 6. Chinavia armigera (Stål), fertile eggs, anterior view. Fig. 7. Chinavia aseada (Rolston), lateral view. Fig. 8. Chinavia brasicola (Rolston), anterior view. Fig. 9. Chinavia runaspis (Dallas), anterior view. Fig. 10. Banasa induta Stål, lateral view. Fig. 11. Serdia apicicornis Stål, anterior view. Fig. 12. Thoreyella maracaja Bernardes, Schwertner & Grazia, lateral view. Scale bar = 1 mm.

FIGURES 37 – 48. Eggs of the Pentatomidae viewed with SEM. Figs. 37 and 38. Euschistus (Lycipta) riograndensis Weiler & Grazia. Fig. 37. Magnification of the lateral wall. Fig. 38. Detail of the lateral wall, showing the AMP. Figs. 39 – 42. Euschistus (Mitripus) paranticus Grazia. Fig. 39. Lateral view. Fig. 40. Anterior view. Fig. 41. Magnification of anterior pole, showing the AMP. Fig. 42. Detail of AMP. Figs. 43 – 46. Mormidea cornicollis Stål. Fig. 43. Lateral view. Fig. 44. Anterior view. Fig. 45. Magnification of anterior pole. Fig. 46. Detail of AMP. Figs. 47 and 48. Chinavia armigera (Stål). Fig 47. Lateral view. Fig. 48. Anterior view. Abbreviations: amp – aero-micropylar process, lw – lateral wall.