Cecyrina Walker, 1867

Zhao, Qing, Bu, Wen-Jun & Liu, Guo-Qing, 2016, The genus Cecyrina Walker, 1867, with the description of two new species (Hemiptera: Pentatomidae: Asopinae), Zootaxa 4114 (3), pp. 309-319 : 310-311

Cecyrina Walker, 1867

Cecyrina Walker 1867: 118 .

Type species: Cecyrina platyrhinoides Walker 1867 .

Diagnosis. This genus can be recognized within Asopinae by the following combination of characters. Head longer than pronotum; mandibular plates very long, distinctly surpassing clypeus, convergent and touching; eyes well or a little separated from anterior margin of the pronotum; rostrum short and crassate, not passing mesocoxae. Each profemur armed with a distinct spine subapically; protibia dilated strongly and laminate; abdominal sternite III with a single, short, apically pointed spine, not reaching the metacoxae.

Redescription. Body elongate ovate, black brown or reddish, mottled with irregular finely yellowish spots.

Head. Nearly as long as pronotum, a little declined, vertex flat but deeply punctured; mandibular plates much longer than clypeus and converging apically, apex truncate; ocelli situated distinctly posteriad to the level of posterior margin of eyes, relatively close to eyes ( Fig. 1). Antenna thin, five-segmented. Rostrum crassate, apex not surpassing the posterior margins of mesocoxae. Buccula low, becoming obsolescent posteriorly.

Thorax. Pronotum broader than long, dorsal surface rugulose or comparatively flat at basal area. Anterior margin deeply concave, with a narrow marginal callose, thickening neighbored by a broad impression posteriorly; anterior angles projected, finger-like; lateral margins strongly sinuated and weakly serrate; humeral angles rounded, not or only weakly produced. Scutellum triangular, longer than basal width; dorsal surface strongly rugulose or not, the apex surpassing half of abdomen but distinctly remote from apices of coria and ending well before apex of abdomen; clavus long and narrow, strongly tapering posteriorly; membrane surpassing the end of abdomen. Proepisternum simple; mesosternum with an obtuse, rather low, but distinct carina; metasternum with a small, elongate, rhomboid elevation along midline; metathoracic scent gland ostiole provided with a weakly elevated, elongate peritreme. Ventral surface of profemur armed with a single strong spine subapically, meso- and metafemur also armed with at least a trace of spine; dorsal margin of protibia strong dilated and laminate, all femora with a single spine; tarsi 3- segmented.

Abdomen. Base of sternite III with short, obtuse tubercle, directed anteriorly, not reaching metacoxae; posterolateral angles of connexival segments III–VII slightly produced ( Fig. 2 ). Males without pilose abdominal glands.

Male genitalia. Pygophore cup-like, wider than long or as long as wide; posterolateral angles (lp.a.) prominent, rounded, lengths are different in different species; dorsoposterior rim (dp.r.) concave, with two parandria (pa.), shapes of which are variable ( Fig. 9 ); ventroposterior rim (vp.r.) convex, sclerotized medially ( Fig. 10 ). Paramere simple, with or without branch, apical part variable ( Fig. 13 ). Aedeagus simple, with one pair of basolateral conjunctival lobes (bl.c.l.), apices not bifurcate, ventral and apical conjunctival lobes absent; median penial plates (m.p.p.) strongly sclerotized, united at base, distinctly concave apically; vesica (v.) distinctly protruding from venter of median penial plates ( Figs. 11, 12 ).

Figures

FIGURE 2. Ventral view of Cecyrina abdomen.

FIGURES 9 – 13. Cecyrina flata sp. n. 9 – 10. Pygophore (9. Dorsal view; 10. Ventral view) (dp. r. = dorsoposterior rim; lp. a. = lateroposterior angle; pa. = parandria vp. r. = ventroposterior rim). 11 – 12. Aedeagus (11. Lateral view; 12. Apical view) (bl. c. l. = basolateral conjunctival lobe; m. p. p. = median penial plates; v. = vesica). 13. Paramere (Ventral view).