Rhopalophora dyseidia Martins & Napp, 1989

Juárez-Noé, Gino, Barboza, Roger G., Perales-Chiscul, Franco & Dávila-Rodríguez, Angela, 2023, First record of Rhopalophora dyseidia Martins & Napp, 1989 (Coleoptera: Cerambycidae: Cerambycinae: Rhopalophorini) in Peru, Revista Chilena de Entomología (Rev. Chil. Entomol.) 49 (3), pp. 633-638 : 634-636

Rhopalophora dyseidia Martins & Napp, 1989

( Figs. 1-6 )

Rhopalophora (Rhopalophora) dyseidia Martins & Napp, 1989: 60 .

Rhopalophora dyseidia, Monné, 1994: 3 ; Monné & Giesbert, 1994: 126; Monné, 2005: 533; Monné & Hovore, 2006: 129; Napp, 2009: 348; Monné et al. 2017: 36; Monné, 2023: 946.

Diagnosis. Males with antennae long, 2.0 times elytral length, reaching elytral apex at apex antennomere VIII, antennomere XI as long as III and apex of ventrite V truncate ( Figs. 1-3 ). Antennal formula based on length of antennomere III (mean, n = 7): scape = 0.52; pedicel = 0.15; IV = 0.83; V = 1.10; VI = 1.13; VII = 1.18; VIII = 0.93; IX = 0.90; X = 0.91; XI = 0.92. Females with antennae shorter, 1.5 times elytral length, reaching elytral apex at apex of antennomere X, antennomere XI shorter than III and apex of ventrite V slightly rounded ( Figs. 4-5 ). Antennal formula based on length of antennomere III (mean, n = 3): scape = 0.50; pedicel = 0.11; IV = 0.75; V = 1.05; VI = 1.10; VII = 1.14; VIII = 0.86; IX = 0.73; X = 0.70; XI = 0.72. At the most specimens examined have elytra dark-brown mostly and reddish-brown basally and laterally; sparse elytral pubescence; and abdominal segments black except apices reddish-brown. However, in a few individuals (two males and one female) elytra dark-brown entirely; elytral pubescence slightly denser; and ventrites entirely reddish-brown.

Rhopalophora dyseidia is very similar to Rhopalophora casignata Martins & Napp, 1989 , but differs as follows: prosternum with two large glabrous areas (without glabrous areas in R. casignata ), elytra with dense sericeous pubescence on side of scutellum and suture (without dense sericeous pubescence in R. casignata ), and metafemora just reaching elytral apex (surpassing elytral apex in R. casignata ). Specifically, males of R. dyseidia differs to males of R. casignata by has antennomere XI as long as III (antennomere XI shorter than III in R. casignata ). Also, R. dyseidia differs from Rhopalophora rufipennis Bezark & Santos-Silva, 2022 by the head with golden pubescence (without pubescence in R. rufipennis ), antennae distinctly surpassing elytral apex in males (slightly surpassing elytral apex in males of R. rufipennis ), and outer apical angle of elytra spiniform (not spiniform in R. rufipennis ).

Rhopalophora dyseidia differs from the only species known from Peru, R. peruana , by the pubescence in pronotum and elytra distinctly sparser, metafemora reaching elytral apex, and apex obliquely truncate with projection at outer angle. In R. peruana the pubescence in pronotum and elytra is distinctly denser, metafemora shorter not reaching elytral apex, and apex truncate without projection at outer angle.

Dimensions (mm) (males/females). Total length, 7.10-9.20/7.10-7.30; prothoracic length, 2.80-3.20/2.80-3.00; anterior prothoracic width, 1.20-1.30/1.20-1.30; posterior prothoracic width, 1.25-1.35/1.25-1.35; maximum prothoracic width, 1.40-1.60/1.40-1.50; humeral width, 1.70-1.90/1.70-1.80; elytral length, 4.20-6.10/4.10-4.20.

Distribution and ecology. Currently, R. dyseidia it is known from Ecuador (Loja province: Catamayo and Loja Canton) at 2050 m altitude ( Martins & Napp 1989; Napp 2009; Monné 2023). We here report also from the Peruvian region of Lambayeque, representing a new country record for this species. The specimens were collected in areas of seasonally dry forest (dry scrublands and mountain dry forests) between 180-300 m altitude. The specimens were beaten and hand-collected on leaves and flowers of Marsypianthes chamaedrys (Vahl) Kuntze ( Lamiaceae ), Acanthospermum hispidum DC. and Wedelia latifolia DC. ( Asteraceae ) ( Figs. 6 a-c).

Material examined. 1 male. PERÚ, Lambayeque region, Chiclayo province, Chongoyape district, Cerro Garraspiña , 06°43’77’’S- 79°29’51’’W, 258 m, 08-IV-2023, hand-collected, A. Dávila leg. ( MUPRG) . 1 male. PERÚ, Lambayeque region, Ferreñafe province, PÍtipo district, Jagüeyes de Mayascón , 06°24’53’’S- 79°32’42’’W, 226 m, 21-V-2023, hand-collected, R. Barboza leg. ( MUPRG) . 2 females, 1 male. PERÚ, Lambayeque region, Ferreñafe province, PÍtipo district, Jagüeyes de Mayascón , 06°24’58’’S- 79°32’43’’W, 232 m, 21-V-2023, hand-collected, R. Barboza leg. ( GJNC) . 1 female. PERÚ, Lambayeque region, Chiclayo province, Chongoyape district, Cerro Garraspiña , 06°43’17’’S- 79°29’36’’W, 185 m, 02-IV-2023, hand-collected, R. Barboza leg. ( MUPRG) . 1 female. PERÚ, Lambayeque region, Chiclayo province, Chongoyape district, Cerro Garraspiña , 06°43’15’’S- 79°29’46’’W, 239 m, 06-IV-2023, hand-collected, F. Perales leg. ( MUPRG) . 2 males. PERÚ, Lambayeque region, Ferreñafe province, PÍtipo district, Jagüeyes de Mayascón , 06°24’54’’S- 79°32’42’’W, 228 m, 21-V-2023, hand-collected, F. Perales leg. ( MUPRG) . 1 male. PERÚ, Lambayeque region, Ferreñafe province, PÍtipo district, Jagüeyes de Mayascón , 06°25’06’’S- 79°32’38’’W, 255 m, 21-V-2023, hand-collected, D. GarcÍa leg. ( MUPRG) .

Figures

Figure 6. Rhopalophora dyseidiaMartins & Napp, 1989. 6a-c. On flowers of Wedelia latifolia. / 6a-c. Sobre flores de Wedelia latifolia.

Figures 1-3. Rhopalophora dyseidia Martins & Napp, 1989. 1-3. Male from Peru, dorsal, ventral, and lateral views. / 1-3. Macho de Perú, vistas dorsal, ventral y lateral.

Figures 4-5. Rhopalophora dyseidia Martins & Napp, 1989. 4-5. Female from Peru, dorsal and ventral views. / 4-5. Hembra de Perú, vistas dorsal y ventral.