Eurypedus nigrosignatus (Boheman)

Shin, Chulwoo, 2016, A revision of the Neotropical tortoise beetle genus Eurypedus Gistel 1834 (Coleoptera: Chrysomelidae), Zootaxa 4161 (3), pp. 329-344 : 339-341

Eurypedus nigrosignatus (Boheman)

( Figs 3–5 , 9–11, 20–27, 30, 37–38, 40)

Ischyrosonyx nigrosignata Boheman 1854: 327, 1856: 116 [checklist], 1862: 283 [checklist]; Gemminger & Harold 1876: 3651 [catalogue]; Champion 1894: 176 [faunistic record]; Spaeth 1914: 65 [catalogue], 1915: 283 [description]; Borowiec 1999: 171 [catalogue, lectotype designation].

Ischyrosonyx discipennis Boheman 1854: 325, 1856: 115 [checklist], 1862: 283 [checklist]; Gemminger & Harold 1876: 3651 [catalogue]; Spaeth 1914: 65 [catalogue, as synonym of I. nigrosignata ], 1915: 283 [field observation note, as same species of I. nigrosignata ]; Borowiec 1999: 171 [catalogue, lectotype designation].

Ischyrosonyx marginicollis Boheman 1854: 326, 1856: 116 [checklist], 1862: 283 [checklist]; Gemminger & Harold 1876: 3651; Spaeth 1914: 65 [catalogue, as synonym of I. nigrosignata ], 1915: 283 [field observation note, as same species of I. nigrosignata ]; Borowiec 1999: 171 [catalogue, lectotype designation].

Eurypedus nigrosignata (Boheman) : Wilcox 1975: 154 [checklist]; Gómez et al. 1999: 1007 [larval biology].

Eurypedus nigrosignatus (Boheman) : Borowiec 1996: 186 [faunistic record, new combination], 1999: 171 [catalogue], 2002: 93 [faunistic record]; Gómez 2004: 489 [biology]; Chaboo 2007: 32 [egg figure]; Borowiec 2009: 671 [faunistic record]; Borowiec & Świętojańska 2014 [online catalogue].

Type specimens. Lectotype of I. nigrosignata : Type, Dupont, “Columbia”, NHRS-JLKB 0 0 0 0 20273, des. L.

Borowiec ( Fig. 3 , examined and measured). Three paralectotypes of I. nigrosignata: Dupont , “Columbia”, NHRS- JLKB 0 0 0 0 20277, des. L. Borowiec (examined and measured); “Columbia”, Guèrin, NHRS-JLKB 0 0 0 0 20278, des. L. Borowiec (examined and measured); “Columbia”, Guèrin, NHRS-JLKB 0 0 0 0 20279, des. L. Borowiec (examined and measured) in NHRS.

Lectotype of I. discipennis : Type, Dupont, “Columbia”, NHRS-JLKB 0 0 0 0 20272, des. L. Borowiec ( Fig. 4 , examined and measured). Three paralectoytpes of I. discipennis : “Columbia”, Guèrin, NHRS-JLKB 0 0 0 0 20274, des. L. Borowiec (examined and measured); Dupont,, “Columbia”, NHRS-JLKB 0 0 0 0 20275, des. L. Borowiec (examined and measured); Dupont, “Columbia”, NHRS-JLKB 0 0 0 0 20276, des. L. Borowiec in NHRS.

Lectotype of I. marginicollis :Type, Dupont, “Columbia”,NHRS-JLKB 0 0 0 0 20271. des. L. Borowiec ( Fig. 5 , examined and measured) in NHRS.

Type locality. Colombia ( I. nigrosignata ).

Colombia ( I. discipennis ).

Colombia ( I. marginicollis ).

Diagnosis. Eurypedus nigrosignatus is easily distinguished from E. peltoides by the shape of the prothorax and leg. In E. nigrosignatus , pronotal width at the broadest point is 1.3–1.4 times the length; in E. peltoides , width is 1.5–1.6 times the length. The posterior margin of the pronotal hypomeron is more emarginate than in E. peltoides ( Fig. 30 ). Protibial length in E. nigrosignatus is less than or equal to 2.5 times the width of the distal end; in E. peltoides , length is equal to or greater than 3 times the width of the distal end.

Description. Adult (n=114) length 6.0– 9.5mm, width 3.0–5.0mm (lectotype: length 7.5mm, width 3.7mm). Pronotum ( Figs 3–5 , 9, 10) hemispherical, width at broadest point 1.3–1.4 times length; pronotal disc convex, with or without medial longitudinal furrow; posteromedial region of pronotum convex or flattened with shallow depression on each side; posterior margin of pronotal hypomeron concave, with depth about 0.5 times width of hypomeron at posterior margin. Elytra ( Figs 3–5 , 9) with length about1.4 times width, or shorter; submesal interval distinct on each elytron, marked by punctures and occasionally with black coloration; punctures on elytral disc with uniform size, forming striae; medial region of each elytral base convex with surface smooth, occasionally flattened. Tibiae ( Fig. 30 ) elongate, triangular in lateral view; length less than or equal to 2.5 times width of distal end. Aedeagus ( Figs 37–38 ) curved, slightly narrower apically; phallobase with length equal to or shorter than 0.3 times length of aedeagus; apex of median lobe broadly pointed, with angle over 90˚.

Additional specimens examined. Brazil: (Estado de Amazonas or Estado de Minas Gerais) Capella, ex FC Bowditch collection ( MCZ: 16, see Discussion) . Colombia: Puerto Colombia, 1986, J Bequaert ( MCZ: 1); Departamento del Rio Magdalena, xi.1958, ca. 686 , DZUP, 148973 ( DZUP: 1). Guatemala : Departamento de El Progreso, 94km road to Puerto Barrios , 14° 55’ 17 N, 89° 56’ 11 W, 19.vi.2002, WB Warner ( EGRC: 5; TAMU: 2) ; Departamento de El Progreso, 103km Coban road, 2.vi.1991, R Anderson, thorn scrub 91-43 ( TAMU: 1) ; Departamento de Retalhuleu, Champerico , 3.viii.1905 ( USNM: 2) ; Departamento de Zacapa, 7km West Teculutan , 25.vi. 1993, 340m, R Brooks and J Ashe ( SEMC: 2, 2 males 2 females, dissected for SEM and genitalia observation); intercepted in plane at Miami Florida, Byrd K Dozier, 31.vii.1969, in epiphytic Bromel ADS ( EGRC: 2; FSCA: 3) . Honduras: Department de Choluteca, 19.5km East Choluteca, Villa Guadelupe , 5.vi.1993, FW Skillman Jr, Beating roadside vegetation ( EGRC: 1; FSCA: 1) . Mexico: Estado de Yucatán, 12km North of Quintana Roo Highway 295, 20.v.1987, DA Rider, EG Riley and TJ Riley ( EGRC: 1) . Nicaragua: Departamento de Esteli, Espinol , 21.i.1986, E Chavez, on Tectona grandis ( USNM: 2) ; Departamento de León, Nagarote , 15.vii.1983, host plant Melanthera aspera (= M. nivea ) ( FSCA: 1) ; Departamento de León, x.1989, B Garcete ( TAMU: 1; EGRC: 1) ; Departamento de Matagalpa, Carmen , 1.vii.1983, host plant Cordia inermis ( FSCA: 4) . Panama: Provincia de Chiriquí , Chiriqui ( MCZ: 7, mislabeled as Costa Rica) ; Provincia de Colón, Coco solo Canal Zone , 30.v.1959, S Breeland ( FSCA: 11) ; Provincia de Panama, Cerro Campana , 17.v.1993, F Andrews and A Gilbert ( EGRC: 1) ; Provincia de Panama, Chepo , 3.vi.1993, F Andrews and A Gilbert ( EGRC: 1) ; Provincia de Panama, 1km East of Chepo , 18.v.1993, EG Riley ( EGRC: 3) ; Provincia de Panama, 21km SW of Chepo , 4.vii.1974, CWL O’Brien and Marshall ( EGRC:1) ; Provincia de Panama, Chepo , 25.v.1996, DM Windsor ( SEMC: 4); no detailed data, ex FC Bowditch collection ( MCZ: 12) . Venezuela: Estado Merida , San Juan, 25.vi.1983, Clark and Clark ( BYU: 3; EGRC: 1); no detailed locality data, 11.v.1972 , Zulia Urdaneta ( USNM: 1); no detailed locality data, ex FC Bowditch collection ( MCZ: 5); no detailed locality data, ex FC Bowditch collection ( MCZ: 4).

Distribution. Brazil: Estado de Amazonas or Estado de Minas Gerais, Capella (unclear for Estado level, see discussion). Colombia: Departamento del Magdalena ( Borowiec 1996). Guatemala: Departamento de El Progreso (new record); Departamento de Retalhuleu (new record); Departamento de Zacapa ( Borowiec 1996). Honduras (new record): Departamento de Choluteca (new record). Mexico: Estado de Yucatán (new record). Nicaragua: Departamento de Chontales ( Champion 1894); Departamento de Esteli (new record); Departamento de Leon (new record); Departamento de Matagalpa (new record). Panama: Provincia de Chiriquí (new record); Provincia de Colón (new record); Provincia de Panamá ( Windsor et al. 1992). Venezuela: Estado Mérida ( Borowiec 2002).

Host plants. Asteraceae : Melanthera nivea (L.) Small (new record). Boraginaceae : Cordia spinescens L. ( Windsor et al. 1992), Cordia currasavica (Jacq.) Roem. & Shult. ( Gómez et al. 1999; Gómez 2004); Cordia inermis (Mill.) I.M. Johnst. (new record). Verbenaceae : Tectona grandis L. (see Discussion).

Figures

FIGURES 1 – 5. Type specimens. 1. Holotype of Cassida oblonga Sturm in Thon (= Eurypedus thoni). 2. Lectotype of Eurypedus peltoides. 3. Lectotype of Ischyrosonyx nigrosignata (= Eurypedus nigrosignatus). 4. Lectotype of Ischyrosonyx discipennis (= Eurypedus discipennis). 5. Lectotype of Ischyrosonyx marginicollis (= Eurypedus marginicollis).

FIGURES 29 – 30. Prothorax in ventral views. 29. Eurypedus peltoides. 30. Eurypedus nigrosignatus. 31 – 34. Eurypedus nigrosignatus. 31. Mesonotum. 32. Complex of mesoventrite and metaventrite. 33. Metanotum. 34. Elytron (ventral view).

FIGURES 35 – 38. Male genitalia. 35. Aedeagus of Eurypedus peltoides (ventral view). 36. Aedeagus of Eurypedus peltoides (lateral view). 37. Aedeagus of Eurypedus nigrosignatus (ventral view). 38. Aedeagus of Eurypedus nigrosignatus (lateral view). 39 – 40. Female genitalia. 39. Spermatheca of Eurypedus peltoides. 40. Spermatheca of Eurypedus nigrosignatus.