Callostethus flavolineatus Fernandes & Grazia

Fernandes, José Antônio Marin, Grazia, Jocélia & Campos, Lourival Dias, 2011, Redescription of Callostethus Ruckes, 1961 (Hemiptera: Heteroptera: Pentatomidae: Discocephalinae) with the description of C. flavolineatus sp. nov., Zootaxa 2866, pp. 55-60 : 57-58

Callostethus flavolineatus Fernandes & Grazia sp. nov.

( Figs. 5–7 ; 9 )

Material examined. Holotype male. BRAZIL. Amapá: rio Aniconi , 16–VI–1959, J. Lane ( MZUSP).

Measurements. Body length: 9.5 mm; body width: 6.1 mm; head length: 1.7 mm; head width: 2.9 mm.

Etymology. This name is related to the yellow margin of the metapleuron.

Small size. Body castaneous, veins of hemelytra concolorous except radial vein pale yellow. Scutellar spots small. Hemelytra without dark spots. Medial ridge of the mesosternum black. Calloused area of metapleuron yellow. Abdomen ventrally dark castaneous, sparsely punctured. Spiracles near a tumid concolorous area. Medial retrorsely produced process of seventh abdominal segment narrow, long, flat, arising from apical margin, this even, and apex expanded and slightly curved ( Fig. 7 ).

Male ( Figs. 5–6 ). Pygophore with dorsal rim projected medially. Posterolateral angle flattish and rectangular in lateral view. Ventral rim narrow and fold dorsally; area of contact with posterolateral angles not membranous. Paramere uncinate with distal part wide, flat, rounded; near its base arises a small digitiform process pointed anteriorly. Proctiger with dorsal processes short, dorsally directed; posterior face sloped with lateral margin tumid.

Female unknown.

Comments. This specimen is smaller and darker than C. guttatopunctatus ( Fig. 8 ). Other diagnostic features are the small yellow marks on scutellum, the medial ridge of the mesosternum black, and the medial retrorsely produced process of the seventh abdominal segment arising from the margin of the segment.

Figures

FIGURES 5–7. Callostethus flavolineatus sp. nov. 5–7, male; 5–6, pygophore; 5—dorsal view; 6—ventral view; 7—medial process of the seventh abdominal segment. (Scale = 1mm).

FIGURES 8–9. dorsal view of the species of Callostethus. 8—C. flavolineatus sp. nov., 9—C. guttatopunctatus (Fabricius, 1803).