Plagaedessa distanti, Almeida & Nunes & Fernandes, 2018

Almeida, Flavio Roberto De Albuquerque, Nunes, Benedito Mendes & Fernandes, Jose Antonio Marin, 2018, A new genus and new species of Edessinae (Hemiptera: Heteroptera: Pentatomidae), Zootaxa 4377 (2), pp. 254-268 : 260-264

Plagaedessa distanti sp. n.

( Figs. 28–32 , 41 , 46–47, 52)

Etymology. Named in honor to William Lucas Distant who made important contributions to the knowledge of Heteroptera .

Material examined (n=4): Holotype male. PERU, Huánuco: 1 ♂, Tingo Maria National Park, Tingo Maria , 660 m. 11–17.IV.1987. J. E. Eger, coll. ( USNM) .

Paratypes. PERU, Loreto: 1 ♂ 1 ♀, Yacumama Lodge, nr. jct. R. Maranon & R . Ucayali ; 73.5°W 4.8°S, 6– 20.VIII.1994; D. Nicle, P. Skelley, et al. (JEE); Huánuco: 1 ♀, Same data as holotype ( USNM) .

Measurements. Total length: 16.3–17.7 mm; abdominal width: 8.2–9.3 mm; head length: 1.7–1.9 mm; head width: 2.9–3.2 mm; antennomeres length: I: 0.8–1.0; II: 1.6–1.8; III: 1.6–2.1; IV: 3.5–4.0; V: 4.2; pronotum length: 3.2–3.8 mm; pronotum width: 9.5–10.7 mm.

Diagnosis. Pygophore with posterolateral angles slightly curved in dorsal view ( Fig. 28 ). Superior process of genital cup deep and large, reaching the apices of paramere projections ( Fig. 29 ). Parameres sinuous and directed toward the proctiger, anterior projection short and rounded; lateral projection directed toward the superior process of genital cup ( Fig. 29 ). Females with gonocoxite 8 showing a black large spot on the distal margin. Female internal genitalia with capSUla SeminaliS cylindrical and projections clearly surpassing posterior annular flange ( Fig. 41 ); sclerotized part of gonapophysis 9 smaller than in P. celSa ; DUctUS receptacUli after vesicular area longer than in P. celSa ( Figs. 40, 41 ).

Discussion. This species can be differentiated by the deeper concavity of the superior process of genital cup and shape of parameres. Females of this species are the only ones showing a black large spot on the distal margin of gonocoxites 8 while the other species have the gonocoxites 8 entirely yellow.

Distribution ( Fig. 52 ). PERU: Loreto, Huánuco.

Figures

FIGURE 52. Distributional map of the species of Plagaedessa.

FIGURES 28–32. Plagaedessa distanti sp. n. 28–30 Male, pygophore; 28—dorsal view; 29—posterior view; 30—ventral view.31—Female, genital plates. 32—Metasternal process, ventral view.(Scale = 1mm).

FIGURES 40–43. 40–41 Laterotergites, gonocoxites and gonapophyses of ninth segment, and ectodermical genital ducts, ventral: 40—Plagaedessa celsa; 41—P. distanti. 42—Female, genital plates of P. celsa. 43—Phallus of P. celsa, lateral view. (aaf–anterior annular flange; ch–chitinellipsen; cs–capsula seminalis; dr–ductus receptaculi; paf–posterior annular flange; pc– pars comunis; ph–phallus; pi–pars intermedialis; tdr–thickening of ductus receptaculi; tg9–thickening of gonapophyses 9; tvi– thickening of vaginal intima; ves–vesical.Scale = 1mm).