Amapacylapus unicolor, Wolski, 2017

Wolski, Andrzej, 2017, Taxonomic review of the plant bug genera Amapacylapus and Cylapus with descriptions of two new species and a key to the genera of Cylapini (Hemiptera: Heteroptera: Miridae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 57 (2), pp. 399-455 : 414-415

Amapacylapus unicolor sp. nov.

( Figs 5, 7, 17–22 , 26 )

Type material. HOLOTYPE: J, ECUADOR: ORELLANA: “ Napo, Tiputini Biodiversity Station , 216 m, 0º37’55’’S, 76º08’39’’W, 5 Feb. 1999, T.L. Erwin et al. collectors; Insecticidal logging of mostly bare green leaves, some with covering of lichenous or bryophitic plants in terre firme forest, Lot 2082, Trans. T–9” ( USNM) ( Fig. 5) . PARATYPES: J, ECUADOR: ORELLANA: “ Napo, Tiputini Biodiversity Station , 216 m, 0º37′55″S, 76º08′39″W, 4 July 1998, T.L. Erwin et al. collectors; Insecticidal logging of mostly bare green leaves, some with covering of lichenous or bryophitic plants in terre firme forest, Lot # 1861, Transect # T–7” ( USNM) ; ♀, “ Ecuador: Napo, Tiputini Biodiversity

Station , 216 m, 0º37′55″S, 76º08′39″W, 4 July 1998, T.L. Erwin et al. collectors ; Insecticidal logging of mostly bare green leaves, some with covering of lichenous or bryophitic plants in terre firme forest Lot # 1874, Transect # T–8” ( USNM); ♀: “ Ecuador: Napo, Tiputini Biodiversity Station , 216 m, 0º37′55″S, 76º08′39″W, 8 February 1999, T.L. Erwin et al. collectors ; Insecticidal logging of mostly bare green leaves, some with covering of lichenous or bryophitic plants in terre firme forest Lot # 2028, Transect # T–3” ( USNM).

Diagnosis. Recognized by the following combination of characters: pronotum black with narrow, yellow stripe along posterior margin ( Fig. 5); corial pattern reduced to four patches (see description) ( Figs 5, 26 ); male genitalia as described below and depicted in Figs 17–22 .

Most similar to A. englemani in having elongate patches on corium ( Figs 3, 5, 24, 26 ). It can be easily distinguished by having the reduced corial pattern (fully developed in A. englemani ) ( Figs 3, 5, 24, 26 ).

Description. Male. Coloration ( Figs 3, 24 ). Dark brown to black with yellow or dark yellow and dark red areas. Head dirty yellow; vertex weakly tinged with red apically; rest of head broadly tinged with red; antenna blackish; segment II with narrow, yellow annulation apically; labium blackish. Thorax. Pronotum dark brown, posterior margin dirty yellow along entire length; collar dirty yellow. Mesoscutum and scutellum dark brown with three, relatively large, dirty yellow patches: two basolaterally and one apically. Thoracic pleura dark brown black; metathoracic scent gland evaporative area weakly tinged with dirty yellow. Hemelytron dark brown black with yellow to dirty yellow areas; yellow to dirty yellow pattern composed of elongated patches, lacking basal patch on exocorium (p1), apical patch situated on outer angle of exocorium (p5), and apical patch situated on inner angle of endocorium (p7); cuneus broadly tinged with red basally. Legs. Coxae dark castaneous; remaining segments of fore and middle leg black; mesofemur with yellow patch medially; fore and middle tibia with relatively broad, contrastingly yellow annulation medially. Male genitalia ( Figs 17–22 ). Aedeagus ( Fig. 18 ). Endosoma with secondary gonopore irregularly shaped; sclerite tapering toward apex, sharply pointed, base broadened, with ovoid appendage. Left paramere ( Figs 19–21 ). Apical process with distinct spine posteriorly in dextrolateral view, in dorsal view with distinct spine medioventrally; paramere body with both margins strongly sinuate in dorsal view, when viewed dextrolaterally narrow, straight at apical two thirds, weakly curved at basal one third. Right paramere ( Fig. 22 ). Paramere body and basal process curved.

Female. Similar to male in structure, texture, and vestiture.

Measurements (in mm). J / ♀ (*: holotype measurements): Body. Length: 6.60* / 6.60, width 2.50* / 2.80. Head. Length: 0.48* / 0.45, width: 1.30* / 1.33, interocular distance 0.65* / 0.62. Antenna. Length of segment I: 0.82* / 0.80, II: 2.20* / 2.30, III: 2.50* / 2.8, IV: 3.50* / 3.00. Labium. Length of segment I: 0.60* / 0.62, II: 0.68* / 0.72, III: 0.75* / 0.80, IV: 0.35* / 0.35. Pronotum. Length: 2.10* / 2.20, width of anterior margin: 1.15* / 1.10, length of lateral margin: 0.95* / 0.85, width of posterior margin: 0.90* / 0.95.

Etymology. The name unicolor is Latin adjective meaning “of single color, unicolorous” and is used to denote the uniformly dark brown pronotum with yellow stripe along posterior margin.

Biology. Collected using insecticidal logging of mostly bare green leaves, some with covering of lichenous or bryophitic plants in terre firme forest.

Distribution. Ecuador (Orellana) (this paper).

Figures

Figs 12–22. Male genitalia of Amapacylapus amapariensis Carvalho & Fontes, 1968 (12–16) and A. unicolor sp. nov. (17–22): 12, 18 – endosoma; 13, 19 – left paramere (dorsal view); 14, 20 – left paramere (right lateral view); 15, 21 – apical process of left paramere; 16, 22 – right paramere (left lateral view); 17 – genital capsule. Abbreviations: bpr = basal process; es = endosomal sclerite; pb = paramere body; pr = proctiger; ps = paramere socket; sl = sensory lobe. Scale bars: 0.1 mm.

Figs 23–26. Hemelytron of the species of Amapacylapus Carvalho & Fontes, 1968. 23 – A. amapariensis Carvalho & Fontes, 1968; 24 – A. englemani Carvalho, 1991; 25 – A. labeculosus Bergroth, 1922; 26 – A. unicolor sp. nov. Abbreviations: p1–p7 = yellowish patches; pc = posterior carina; per = peritreme.