Euschistus (Euschistus) baranowskii Eger & Bianchi

Cioato, Alana, Bianchi, Filipe Michels, Eger, Joseph & Grazia, Jocelia, 2015, New species of Euschistus (Euschistus) from Jamaica, Euschistus (Mitripus) and Ladeaschistus from southern South America (Hemiptera: Heteroptera: Pentatomidae: Pentatominae), Zootaxa 4048 (4), pp. 565-574 : 566-567

Euschistus (Euschistus) baranowskii Eger & Bianchi sp. nov.

Etymology. This species is named for R. M. Baranowski who collected extensively in the Caribbean and greatly advanced our knowledge of Heteroptera from that region. The specimen on which the species was based was donated to the Florida State Collection of Arthropods by Dr. Baranowski.

Distribution. Jamaica: Saint Catherine Parish.

Type material. Holotype: ♀ JAMAICA, Saint Catherine Parish: Linstead , 6.IV.1971, R. M. Baranowski col. Black light trap ( FCSA)

Description. Head: Longer than wide, surface light brownish-yellow, dorsal punctures darker and deeper than those on venter. Mandibular plates subequal to clypeus, both obtuse at apex. Antennae uniform light brownishyellow, segment I with small dots, darker and wider than the segments II–V. Bucculae evanescent at base of head. Rostrum reaching the metacoxae.

Thorax: Pronotum with anterolateral margins denticulate, denticles small, closely spaced but not overlapping; humeri strongly produced laterally, falcate, posterior margin of humeral angle bearing a black punctate spot. Scutellum small, fovea present in basal angles, lateral margins more densely punctured than disc; a small ivory callus present at apex. Membrane of hemelytra clear. Venter with dark spot at supracoxal cleft of each pleurite, plus at middle of each metepimeron. Evaporatorium unpunctured, extending more than halfway from ostiole to metapleural lateral margin; peritreme spout-shaped. Metasternum carinate. Legs concolorous with thoracic ventral surface, femora and tibiae with small dark dots.

Abdomen: Connexivum uniformly light brownish-yellow, ventrally bearing a dark spot at anterolateral margin. Spiracles concolorous with abdomen.

Female Genitalia: ( Fig. 4–5 ) Gonocoxites 8 with sutural margin straight, sutural angle acute and elevated, projected over gonocoxites 9, posterior margin indented where anterolateral angles of gonocoxites 9 fit. Gonocoxites 9 surface slightly convex, anterior and posterior margins continuous and convex. Laterotergites 8 strongly acute at apex, clearly surpassing the posterior margin of laterotergites 9; laterotergites 9 clearly surpassing dorsal band that unites laterotergites 8, lateral margins non-emarginated, inner margins straight.

Measurements: (n=1) Body length 13.30; abdominal width 7.30; head length 2.55; length before eyes 1.38; head width 2.39; interocular distance 1.41; length of antennal segments: I 0.90; II 1.00; III 1.89; IV 1.92; V 1.87; pronotum length 3.19; pronotum width 9.43; scutellum length 5.15; scutellum width 7.70.

Comments. Euschistus (E.) baranowskii (habitus Fig. 1 ) is a relatively large species within the genus Euschistus . It resembles the larger species such as E. servus (Say) , E. heros (Linnaeus) , and E. rugifer Stål. However , the humeri in these species are not as strongly produced and none of these species have this structure falcate. The falcate humeri will also separate this species from all other species occurring in the Caribbean ( E. (E.) acuminatus Walker , E. (E.) agudus Rolston , E. (E.) atrox (Westwood) , E. (E.) bifibulus (Palisot de Beauvois), E. (E.) crassus Dallas , E. (E.) crenator (Fabricius) , E. (E.) obscurus (Palisot de Beauvois), E. (E.) rufimanus Stål , and E. (E.) thoracicus Dallas ).

Figures

FIGURES 4 – 5. Euschistus (Euschistus) baranowskii sp. nov.; female, genital plates, posteroventral view. (gc 8, gonocoxites 8; gc 9, gonocoxites 9; la 8, laterotergites 8; la 9, laterotergites 9; X, tenth segment). (Scales = 1 mm).

FIGURES 1 – 3. Dorsal view: 1: Euschistus (Euschistus) baranowskii sp. nov.; 2: Euschistus (Mitripus) saramagoi sp. nov.; 3 – Ladeaschistus borgesi sp nov. (Scales = 1 mm).