Bernathomonus postrosea Vincent, 2011

Vincent, Benoit, 2011, Two new species of Arctiidae (Lepidoptera) from Peru, Zootaxa 3108 (1), pp. 64-68 : 64-65

Bernathomonus postrosea Vincent , new species

Figs. 1 , 5 , 7, 9

Type material. Holotype, male: Peru, Route Lima-Pucallpa , Carpish Pass, 2700 m, 17-21-XI-1979, T. Porion leg., genital prep. BV 397; in coll MNHN n° Ent.Lep.H 539 . Paratypes: 1 male, Peru, Pasco, Route Olmos-Moyobamba pK 374, 2100m, 7/ 9-I-1980, T. Porion leg. , genital prep. AS 3285; in coll MNHN n° Ent.Lep.H538. 7 males, Peru, Huanuco, Carpish , 2000–2800m, IV-2009, R. Marx leg. , in coll BVC. 1 female, idem, genital prep. BV 418, in coll BVC .

Etymology. The name is derived from the pink coloration of the hindwing, a novel character within the genus Bernathomonus .

Description. Male. Wingspan 55–59 mm; forewing length 26 mm Head: Labial palpi dark brown, curved upward, third segment shorter than first two. Proximal part of the second segment with a ring of yellow scales. Frons and vertex dark brown mixed with yellow scales. Scape bright yellow. Antenna and pectinations dark brown. Thorax: Patagia dark brown with two central patches of yellow scales. Posterior side with light yellow scales. Tegulae exteriorly light yellow and bordered with dark brown, mesially dark brown with yellow scales. Thorax yellow dorsally, with an anterior dark brown side. Thorax ventrally yellow, dark brown between legs and head. Legs dark brown with a yellow patch which gives a ringed appearance. Internal face of the femur pink. Abdomen: Anterior third yellow with long scales, median third pink with long scales and posterior third black with short scales. Anal tuft shows light yellow and brown long scales. Forewing: Ground colour dark brown, slightly clearer on the outside edge. Multiple yellow spots present as rough bands as follows: postbasal, complete, arcuate; antemedian incomplete, as four spots, the largest being rectangular on the costa (band interrupted in middle of wing); median incomplete, as two round spots from the costa; postmedian from costa to M2, as three round spots of similar size; subterminal almost complete, as irregular round spots, two largest located between veins R5 and M2. Fringe brown. Ventral surface identical, slightly lighter. Hindwing: Costa, apex and outer edge marked by broad band identical to the basic forewing color. Anal margin and base of wing pinkish, more intense along anal margin. Male genitalia ( Fig. 5 ) – Uncus elongate, base rounded, apex spatulate, medially narrowed, densely setose laterally. Tegumen composed of two oval plates, shorter than uncus. Valves symmetrical, reaching apex of uncus and bearing a few long setae. Valve apex consists of two large lobes, the lower lobe translucent and less sclerotized. Vinculum delicate, carrying a saccus ventrally folded to the base of the juxta. Juxta barely sclerotized, bellshaped. Transtilla composed of two cat-ear-shaped lobes. Penis elongate, greatly expanded at the insertion of the ductus ejaculatorius (Fig. 7). Caecum penis short. Vesica short with multiple diverticuli, three of them marked by robust sclerotized spines and one with shorter and slightly sclerotized spines. Female. Wingspan 59 mm; forewing length 29 mm. Markings as in male holotype, with slightly larger yellow spots on the forewings. Female genitalia (Fig. 9) – Pseudopapillae anales wholly fused. Papillae anales trapezoid and strongly setose. Anterior apophysis straight, 0.6 mm. Posterior apophysis slightly curved, 1,7 mm. Ductus bursae rectangular, 1.7 mm long. Corpus bursae reduced, flattened, consisting of two adjacent, rounded chambers. Inner shell completely covered by little papilla. Dorsal chamber ending in a short and thick ductus seminalis terminating abruptly at the bulla seminalis, which consists of a single chamber, strongly wrinkled, the same size as the corpus bursae.

Remarks. This new species is similar to Bernathomonus aureopuncta ( Rothschild, 1916) , described from Monte Tolima in Colombia ( Fig. 2 ), but it can be distinguished from that species by the following differences: patagia and tegulae are brown with a yellowish punctuation, internal face of femur brown, abdomen brown with long scales except the posterior third, which is red without scales, forewing spots are identical in shape and rounded, anal margin and inside of the hindwing brown. In the male genitalia ( Fig. 6 ), tegumen are much broader, the uncus is shorter, not narrowed down the middle and with an unusual medial notch at the apex, valves are larger. The apex is formed of two lobes, one of them much wider and shorter. Vesica with two strong cornuti and one slightly sclerotized (Fig. 8).

Figures

FIGURES 1–4. Adult dorsal view. 1. Bernathomonus postrosea male holotype. 2. Bernathomonus aureopuncta male. 3. Pseudopharus reniforma male holotype. 4. Pseudopharus cornelia male.

FIGURES 5–6. Dorsal view of male genitalia. 5. Bernathomonus postrosea holotype (prep gen B. Vincent no. BV 397). 6. Bernathomonus aureopuncta (prep gen B. Vincent n° BV 407).