Stultutragus poecilus ( Bates, 1873 )

Bezark, Larry G., Santos-Silva, Antonio & Martins, Ubirajara R., 2011, New species of Rhinotragini and redescription of two species of Stultutragus Clarke (Coleoptera, Cerambycidae, Cerambycinae), Zootaxa 2965, pp. 61-68 : 63-64

Stultutragus poecilus ( Bates, 1873)

( Figs 3–4 )

Ommata (Eclipta) poecila Bates, 1873: 35 ; Blackwelder, 1946: 576 (checklist); Monné & Giesbert, 1994: 96 (checklist); Monné, 2005: 490 (cat.); Monné & Hovore, 2005: 122 (checklist); 2006: 121 (checklist); Monné & Bezark, 2010: 133 (checklist).

Stultutragus poecilus ; Clarke, 2010: 257 (comb. nov.).

Ommata (Eclipta) poecila var. maculicollis Fisher, 1947: 51 .

Differential diagnosis. Stultutragus poecilus ( Figs 3–4 ) is similar to S. nigricornis ( Figs 5–7 ), but differs: body slender in males; head wholly or partially yellowish; pronotum with a single, large and wide black macula; anterior margin of the pronotum not preceded by narrow furrow; metafemora shorter (apex distant of the elytral apex); metatibiae, usually, bicolor ; metatarsomere I shorter. In S. nigricornis : body more robust in males; head wholly black; pronotum without black macula, or with two small maculae (sometimes fused, but always smaller than in S. poecilus ); anterior margin of the pronotum preceded by narrow furrow; metafemurs longer (apex reaching almost the elytral apex); metatibiae wholly dark; metatarsomere I longer. It is also similar to S. fenestratus from which can be separated by the elytral yellowish areas not involved by the dark areas (involved in S. fenestratus ).

Integument orange. The following black: distal part of mandibles; a large transversal band on central area of pronotum, slightly projected centrally towards base ( Fig. 3 ); scape, pedicel, antennomeres III–IV, and apical third to three fourths of antennomeres V–XI; a large humeral band, that does not reach the suture; a large band about middle of elytra, from suture to the lateral margin; all apical forth of elytra; metepisternae; apical lateral half of metasternum in males; apical half of metasternum in females; narrow apical band on urosternite II in males; urosternite III in males; narrow basal band on urosternite IV in males; outer lateral surface of the projection of urosternite V in males; apical 3/4 of urosternite V in females; longitudinal band on dorsal surface of the club of pro- and mesofemurs; apical half of the club of metafemurs; dorsal and lateral surface of protibiae; mesotibiae; apical two thirds of metatibiae; tarsi. Elytra yellowish.

Color variation. Distal part of rostrum black or brownish; head black, except dorsally between eyes, and ventrally between lower ocular lobes and prothorax (only saw in a single female); black band on pronotum without projection towards base, with projection towards apex, or projected towards base and apex; antennomere IV basally annulated with orange; black area of antennomeres V–XI covering entirely or almost entirely the segment (all or some of them, mainly the distal ones); central elytral band of elytra very variable in length; central and apical elytral band fused; apical black band of metasternum narrowly or widely interconnected centrally in females (rarely slightly separated); urosternites II and/or IV without black narrow band in males; urosternite V in males without black areas; urosternite V in females wholly black; black area of the urosternite V in females, restricted to the basal portion; urosternite IV laterally black in females; black area of pro- and mesofemurs covering partially or almost entirely the lateral surfaces of the club; black area of apical portion of the club of metafemurs covering 3/4 of surface; metatibiae wholly black or almost so; elytra white-yellowish.

Male ( Fig. 3 ). Rostrum moderately long (slightly longer than half width of a lower ocular lobe). Distance between lower ocular lobes equal to 0.15 times the width of a lobe; distance between upper ocular lobes equal to twice the width of a lobe. Antennal length equal to 1.1 times the elytral length.

Pronotum coarsely, anastomosedly punctate; pilosity moderately long, very sparse; anterior margin not preceded by narrow furrow. Lateral projections of the urosternite V, wide and elevated. Apex of metafemurs distant from the apex of the elytra. Metatarsomere I ( Fig. 4 ) about as long as II–III together.

Female. Distance between lower ocular lobes equal to 0.65 times the width of a lobe; distance between upper ocular lobes equal to 2.6 times the width of a lobe. Antennal length equal to 1.1 times the elytral length.

Variation. Male: distance between lower ocular lobes from 0.10 to 0.15 times the width of a lobe; antennal length from 1.1 to 1.2 times the elytral length. Female: distance between lower ocular from 0.65 to 0.80 times the width of a lobe; distance between upper ocular lobes from 2.6 to 2.8 times the width of a lobe; antennal length from 1.0 to 1.1 times the elytral length.

Dimensions in mm (male/female). Total length, 5.5–7.9/6.5–10.6; prothorax: length, 1.2–1.5/1.4–2.4; anterior width, 0.8–1.0/1.0–1.6; posterior width, 0.9–1.1/1.1–1.7; humeral width, 1.1–1.4/1.3–2.2; elytral length, 3.6– 4.8/4.2–6.8.

Types, type locality. Bates (1873) described S. poecilus based on unspecified number of males. Although he mentioned only one measure (“4 1/2 lin.”), he also wrote: “Prov. Paraná, Brazil (coll. W. W. Saunders and H. W. Bates). The specimens from Bates Collection are now at MNHN. We do not know where Saunders’ Collection is deposited.

Geographical distribution. Brazil (Espírito Santo to Rio Grande do Sul), Uruguay, Argentina (new record).

Material examined. ARGENTINA, Misiones: Iguazu, male, II.1976, [no collector indicated] ( MZSP). BRA- ZIL, São Paulo: Atibaia, female, 22.X.1970, J. Halik col. ( MZSP); Regente Feijó, female, X.1945, Dirings ( MZSP); São Paulo, female, 20.X.1964, J. J. Ferraciolli col. ( MZSP). Santa Catarina: São Bento do Sul (Rio Vermelho), female, VIII.1950, Dirings ( MZSP); 3 males, 1 female, III.1962, Dirings ( MZSP); Seara (Nova Teutônia), female, XII.1932, B. Pohl col. ( MZSP); male, II.1935, B. Pohl col. ( MZSP); 2 females, 19.XI.1935, F. Plaumann col. ( MZSP); male, 12.XI.1935, F. Plaumann col. ( ISNB); male, 21.XI.1935, F. Plaumann col. ( ISNB); male, X.1941, Dirings ( MZSP); male, X.1941, B. Pohl col. ( MZSP); 1 male, 1 female, X.1940, [no collector indicated] ( MZSP); male, XI.1965, F. Plaumann col. ( MZSP); male, II.1966, F. Plaumann col. ( MZSP); male, IX.1966, F. Plaumann ( MZSP); male, XI.1966, F. Plaumann col. ( MZSP); 1 male, 4 females, XII.1966, F. Plaumann col. ( MZSP).

Figures

FIGURES 1 – 9. 1 – 2, Agaone amazonica sp. nov., holotype female: 1, dorsal; 2, lateral. 3 – 4, Stultutragus poecilus, male: 3, dorsal; 4, lateral. 5 – 7, Stultutragus nigricornis: 5, male, dorsal; 6, male, lateral; 7; female, dorsal. 8 – 9, Stultutragus endoluteus sp. nov., holotype male: 8, dorsal; 9, lateral.