Galgupha (Euryscytus) difficilis (Breddin, 1914)

Matesco, Viviana Cauduro, Bianchi, Filipe Michels, Campos, Luiz Alexandre & Grazia, Jocelia, 2012, Egg ultrastructure of two species of Galgupha Amyot & Serville, with a discussion of the eggs and oviposition patterns of thyreocorid and allied groups (Hemiptera: Heteroptera: Pentatomoidea: Thyreocoridae), Zootaxa 3247, pp. 43-51 : 44

Galgupha (Euryscytus) difficilis

( Figs. 1–6 ).

Eggs were deposited on the bottom of the plastic container or at the

bases of the plant branches; they were laid singly or in pairs and, if paired, attached to each other at a right angle ( Fig. 1 ).

Description. Egg cylindrical with rounded ends, slightly narrower at anterior pole, white; chorion shiny and translucent ( Fig. 1 ). Chorion surface, either with SM or SEM, generally smooth but often with faint longitudinal carinae ( Figs. 1–3 ). Under SEM, center of anterior pole granulated ( Fig. 4 ), sometimes mostly smooth ( Fig. 5 ). Length: 0.8 ± 0.01; width: 0.5 ± 0.02 (0.5–0.6) (n = 7). Micropylar processes (MP) circularly arranged around anterior pole ( Figs. 4, 5 ); mean number of MP 3 ± 0.6 (2–4). Each MP translucent, short, stalked, slightly capitate; apical opening circular; under higher magnification, surface not spongy ( Fig. 6 ).

Figures

FIGURES 1–12. Eggs of Galgupha (Euryscytus) difficilis and Galgupha (Gyrocnemis) fossata. 1— Eggs of G. (E.) difficilis laid in pair, at right angle to each other, attached to branch of Buddleia brasiliensis, viewed with stereomicroscope (SM). 2–6— Eggs of G. (E.) difficilis viewed with scanning electron microscope (SEM): 2— lateral view, 3— anterior view, 4— magnification of anterior pole in lateral view, 5— magnification of anterior pole in anterior view, 6— micropylar process, with circular apical opening. 7–8— Eggs of G. (G.) fossata in SM: 7— Eggs laid singly (arrows), attached to inflorescence of B. brasiliensis, 8— Egg attached to branch of the plant, with conspicuous chorion sculpture. 9–12— Eggs of G. (G.) fossata viewed with SEM: 9— lateral view, 10— anterior view, 11— magnification of anterior pole; chorion sculpture with granules and tubercles, 12— micropylar process, with transverse constriction and circular apical opening. Abbreviations: ga—granulated area, mp—micropylar process.