Bubaces rostralis, Brailovsky & Barrera, 2020

Brailovsky, Harry & Barrera, Ernesto, 2020, Review of the genus Bubaces (Hemiptera: Heteroptera: Rhyparochromidae Lethaeini) with descriptions of three new species, new distributional records, and key to species, Zootaxa 4767 (2), pp. 244-256 : 254-255

Bubaces rostralis sp. nov.

( Figs. 6 , 21-22)

Type locality. Mexico, Quintana Roo.

Description. Holotype female. Dorsal coloration. Head shining reddish brown; tylus and antennal segments I-IV shining dark chestnut orange; basally with two iridescent spots, one on either side of midline; each spot consisting of a series of parallel ridges. Pronotum with anterior lobe dark shining reddish brown, posterior lobe pale shining dark reddish, with humeri yellow and anterolateral borders pale shining reddish brown. Scutellum dark shining reddish brown. Clavi and coria pale shining reddish brown, with costal corial margins yellowish, each corium with a prominent circular yellow to creamy-yellow subapical spot; hemelytra tricolored, membranes at base and near apical corial borders shining chestnut, followed by a transverse hyaline band which continues around borders, remainder pale yellow gray. Dorsal abdominal segments III-V pale brown with lateral margins yellow, segments VI-VII shining dark brown. Ventral coloration. Head, thorax and abdominal sterna shining reddish brown; rostral segments I-IV yellow (apex of IV pale brown); evaporative surfaces shining reddish black; coxae and trochanters shining pale reddish brown; femora shining pale reddish brown with apices yellowish orange; tibiae and tarsi yellow. Structure. Body length large, over 5.4 mm. Head. Dorsally impunctate; ventrally with scattered punctures, with deep ventral longitudinal sulcus; rostrum reaching posterior border of abdominal sternite V; rostral segment I exceeding beyond base of head. Thorax. Pronotum clothed with scattered long hairs, bilobed, transverse impression shallow, not deeply incised; posterior pronotal lobe evenly punctate. Metathoracic scent glands with ostiolar peritremes simple, short, not so well-developed, sinuate, not curving posteriorly; evaporative areas covering entire mesoepimeron, but not extending dorsally along junction with metapleuron. Hemelytra. Macropterous, extending beyond apex of last abdominal segment; clavi and coria clothed with long erect hairs. Abdomen. Sterna sparsely clothed with fine longer hairs.

Male. Habitus and color similar to female. Parameres as in figures 21-22.

Measurements. Male. Body length 5.62; head length 1.02; head width across eyes 0.99; interocular distance 0.52; preocular length 0.69; length antennal segments: I 0.87, II 1.20, III 0.99, IV 1.03; pronotum: total length 1.21; maximum width across humeral angles 1.95; scutellum: length 1.05; width 1.04.

Female. Body length 6.30; head length 1.02; head width across eyes 1.03; interocular distance 0.57; preocular length 0.69; length antennal segments: I 0.90, II 1.32, III 1.12, IV 1.05; pronotum: total length 1.27; maximum width across humeral angles 2.09; scutellum: length 1.12; width 1.11.

Type material. HOLOTYPE female, MEXICO: Quintana Roo, km 146, road Chetumal-Cancun , 3-V-1982, A. Ibarra ( UNAM) . PARATYPES: MEXICO: Quintana Roo, km 146, road Chetumal-Cancun, 3-V-1982, A. Ibarra, 16-VIII-1982, V. Melendez ( UNAM) 1 male, 5 females; Quintana Roo, km 146, road Chetumal-Puerto Juarez, 17-III-1982, col. M. Garcia ( UNAM) 1 female; Quintana Roo, Buenavista, 18-III-1982, M. Garcia ( UNAM) 1 female.

Etymology. The new species is named for the long rostrum, reaching abdominal sterna V or VI.

Discussion. This new species is included in the “ castaneus ” group, and has affinities with B. convergens by having the pronotum, clavi and coria clothed with long erect hairs, and each corium with a prominent circular yellow to creamy-yellow subapical spot, but the rostrum is shorter in B. convergens reaching only to the middle third of abdominal sternite IV, whereas in B. rostralis sp. nov., it reaches the posterior border of abdominal sternite V or sometimes to the middle third of sternite VI; also the body dorsally and ventrally is shining dark reddish brown.

Figures

FIGURES 1–7. Dorsal view of Bubaces spp. 1, B. castaneus Distant (female). 2, B. convergens Brailovsky (male). 3, B. enatus Brailovsky (female). 4, B. gloriosus sp. nov. (female). 5, B. occidentalis sp. nov. (male). 6, B. rostralis sp. nov. (male). 7, B. uhleri (Distant) (male).