Macropygium subsulcatum (Amyot & Serville, 1843)

Silva, Layse Mitsue Harada Da & Campos, Luiz Alexandre, 2021, Revision of Macropygium Spinola, 1837 (Hemiptera: Pentatomidae: Ochlerini) with the revalidation of three species and the description of one new species, Zootaxa 4958 (1), pp. 605-627 : 620-621

Macropygium subsulcatum (Amyot & Serville, 1843) , REVISED STATUS

( Figs 6E ; 11 ; 12 ; Table 1 )

Oxyrhinus subsulcatus Amyot & Serville, 1843: 12 (removed from the synonymy with M. reticulare ).

Macropygium subsulcatum: Dallas, 1851: 158 .

Lectotype female (here designated) ( Fig. 11 ): FRENCH GUYANE, Cayenne. Labels: Cayenne / Coll. Signoret. // subsulcat. / det. Signoret. ( NHM)

Paralectotype female: FRENCH GUYANE, Cayenne. Labels: Cayenne / Coll. Signoret. // subsulcat. / det. Signoret. ( NHM)

Distribution: French Guyane ( Fig. 12 ).

Diagnosis: Antennae five-segmented, first antennomere slightly longer than the second; sutural angles of valvifers VIII posteriorly projected; lateral angles of valvifers VIII roundly projected, covering the base of laterotergites IX.

Male. Unknown.

Female. Genitalia: valvifers VIII almost as long as wide; lateral angles of valvifers VIII rounded, slightly surpassing posteriorly an imaginary line connecting the spiracles of laterotergites VIII, and partially covering a third of the basal portion of laterotergites IX; sutural angles of valvifers VIII posteriorly projected; posterior margin of valvifers VIII concave near the sutural angles; laterotergites IX with mild lateral depression ( Figs 6E ; 11D ).

Comments. Macropygium subsulcatum is currently known only from the two female types, collected in French Guyane ( Fig. 12 ). Macropygium subsulcatum females are readily distinguished from other Macropygium species by the relatively wide valvifers VIII and with broadly rounded apical angle ( Fig. 6E ).

Figures

FIGURE 6. Female genital plates of Macropygium species, ventroposterior view. Macropygium reticulare (Fabricius, 1803) (A); Macropygium spinolae Stål, 1860 (B); Macropygium bifidum (Westwood, 1837) (C); Macropygium graziae Silva & Campos, sp. nov. (D); Macropygium subsulcatum (Amyot & Serville, 1843) (E). Abbreviations: laIX, laterotergite IX; laVIII, laterotergite VIII; vfIX, valvifer IX; vfVIII, valvifer VIII; VII, urosternite VII; X, segment X.

FIGURE 11. Lectotype of Oxyrhinus subsulcatus Amyot & Serville, 1843 [=Macropygium subsulcatum (Amyot & Serville, 1843)]. Dorsal, ventral, and lateral view, respectively (A–C), genital plates in ventroposterior view (D), labels (E).

FIGURE 12. Distribution map of Macropygium reticulare (Fabricius, 1803), Macropygium bifidum (Westwood, 1837), and Macropygium subsulcatum (Amyot & Serville, 1843).