Chinavia armigera (Stål, 1854), Stal, 1854

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

Chinavia armigera (Stål, 1854) , Chinavia aseada (Rolston, 1983) , Chinavia brasicola (Rolston, 1983) , Chinavia runaspis (Dallas, 1851)

( Figs. 6–9 , 47–65 ; Tab. 2 )

Eggs barrel-shaped; light brown prior to embryonic development; operculum round and convex; chorion light brown, reticulated, and usually opaque ( Figs. 7–9 ), shiny in C. armigera ( Fig. 6 ). The eclosion line evident under SM and indicated as a smooth band delimited by the AMPs ( Figs. 6, 8, 9 ). With the development of the embryo, the red eyes of the nymph become evident through the chorion ( Fig. 6 ). The aero-micropylar processes are circularly arranged in a row around the anterior pole, clubbed, and translucent ( C. aseada ) to white (remaining species) ( Figs. 6–9 ).

The chorion surface of all species of Chinavia Orian studied here is reticulated under SEM, with circular or polygonal cells ( Figs. 47 , 52, 56, 60 ). In some species, these cells may be quite regularly hexagonal at the lateral wall ( Fig. 49 ). The cells project inward in a funnel, appearing to bear a hole ( Figs. 49, 54, 58 ). The operculum is similarly sculptured but with smaller cells at center ( Figs. 48 , 50, 53, 57 , 61, 62 ). The eclosion line is wide and clearly evident, marked by several minute and irregular projections ( Figs. 51, 55, 59 , 63 ). The AMPs are moderately short and strongly clubbed, with their openings circular and apical ( Figs. 51, 54, 55, 58, 59 , 63, 64 ). Fine connector sheets among adjacent AMPs have been observed in some of the eggs of all species ( Figs. 51, 54, 55, 58 , 64 ). Under higher magnification, the AMPs surface is spongy ( Figs. 51, 55, 59 , 65 ).

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.

FIGURES 49 – 60. Eggs of Chinavia spp. viewed with SEM. Figs. 49 – 51. Chinavia armigera (Stål). Fig. 49. Magnification of the lateral wall, showing the polygonal cells projected inward in a funnel. Fig. 50. Detail of the anterior pole. Fig. 51. Detail of the anterior pole, showing the eclosion line, the AMP, and the connector sheets (asterisks). Figs. 52 – 55. Chinavia aseada (Rolston). Fig. 52. Lateral view. Fig. 53. Anterior view. Fig. 54. Magnification of the lateral wall, showing the AMP and the connector sheets (asterisks). Fig. 55. Magnification of anterior pole, showing the eclosion line, the AMP, and the connector sheets (asterisks). Figs. 56 – 59. Chinavia brasicola (Rolston). Fig. 56. Lateral view. Fig. 57. Anterior view. Fig. 58. Magnification of the lateral wall, showing the AMP and the connector sheets (asterisks). Fig. 59. Magnification of anterior pole, showing the eclosion line and the AMP. Fig 60. Chinavia runaspis (Dallas), lateral view. Abbreviations: amp—aeromicropylar process, ec—eclosion line, lw—lateral wall.

FIGURES 61 – 72. Eggs of the Pentatomidae viewed with SEM. Figs. 61 – 65. Chinavia runaspis (Dallas). Fig. 61. Anterior view. Fig. 62. Magnification of anterior pole. Fig. 63. Magnification of the lateral wall, showing the eclosion line and the AMP. Fig. 64. Detail of AMP and connector sheets (asterisks). Fig. 65. Detail of AMP surface. Figs. 66 – 69. Banasa induta Stål. Fig. 66. Lateral view. Fig. 67. Anterior view. Fig. 68. Magnification of anterior pole, showing the AMP. Fig. 69. Detail of AMP surface. Figs. 70 – 72. Serdia apicicornis Stål. Fig 70. Lateral view. Fig. 71. Anterior view. Fig. 72. Magnification of the lateral wall, showing the eclosion line and the AMP. Abbreviations: amp—aero-micropylar process, ec—eclosion line, lw—lateral wall.