Rhinocylapus pallescens, Wolski, Andrzej, 2010

Wolski, Andrzej, 2010, Revision of the Rhinocylapus - group (Hemiptera: Heteroptera: Miridae: Cylapinae), Zootaxa 2653, pp. 1-36 : 24-26

Rhinocylapus pallescens sp. nov.

( Figs. 2 O–P, 4C, 11, 16G–H)

Diagnosis. Recognized by the following set of characters: dorsal surface dark brownish with yellowish and orange areas ( Fig. 2 ); pronotum slightly carinate laterally, pronotal collar covered with setae; anterior lobe impunctate; endosoma membranous, with large sclerite basally and with long, membranous, sharply terminated sclerite apically ( Fig. 11 A). The species is closely related to Rh. vittatus , each having a pale body; but in Rh. pallescens this can be easily distinguished by the lack of a yellow, longitudinal vita on the head and the pronotum, by a setae on the pronotal collar, and by the lack of punctation on the anterior lobe of the pronotum.

Description. Male. COLORATION ( Fig. 2 O–P). Dorsal surface dark brownish, with yellowish and orange areas. Head. Yellowish brown; cuneus yellowish; antenna pale; antennal segment I yellowish brown; segment II yellow, with broad, pale brown ring beyond base; segments III and IV brownish. Thorax. Pronotum. Anterior lobe orange with large, brownish patches medially; posterior lobe yellowish with large, dark patches, fused with those on anterior lobe. Mesoscutum and scutellum. Mesoscutum dark brown with small, yellowish areas; scutellum yellowish orange with broad, dark stripe originating on mesoscutum and becoming wider near apex of scutellum and with two, relatively narrow, brownish stripes on sides; apex narrowly pale yellow. Thoracic pleura. Proepimeron dark brown anteriorly, posterior portion paler, yellowish; mesepimeron and metepisternum dark brown; scent-gland evaporatory areas paler, brownish; peritreme dark brown. Hemelytron. Yellowish with large, brownish patches; embolium yellow basally, then orange to reddish; cuneus contrastingly pale, yellowish, slightly tinged with red. Legs. Dark yellowish brown; procoxa pale basally, then brownish; meso- and metacoxa yellowish; trochanter of forelegs brown; trochanters of meso- and metalegs yellow; forefemur brown basally then dark yellow; mesofemur entirely dark yellow; metafemur dark yellowish brown apically; tibia and tarsi yellowish. Abdomen. Brown. STRUCTURE AND VESTITURE ( Fig. 2 O–P, 4C, 16G, H). Dorsal surface covered with pale setae. Head. Covered with dense, long, pale setae; gula densely covered with semidecumbent setae and with very long, protruding setae, matte; segment III and IV, covered with semidecumbent and erect, moderately dense setae; rostrum long, reaching beyond apex of abdomen. Thorax. Pronotum. Pronotal collar wrinkled, covered with pale, decumbent setae; anterior lobe slightly carinate laterally, covered with dense, pale, decumbent setae, impunctate, gently raised medially, with distinct, shallow longitudinal sulcus fused with distinct depression medially on pronotum; posterior lobe punctate, covered with fine, moderately dense, pale setae, with shallow longitudinal sulcus fused with depression medially on pronotum and bordering posterior margin of pronotum. Mesoscutum and scutellum. Scutellum rugose, covered with sparse, fine, semidecumbent setae. Hemelytron. Covered with dense, long, semidecumbent, pale setae; cuneus covered with reclining, pale setae. Legs. Femora covered with long, moderately dense, semidecumbent setae; tibiae covered with sparse, semidecumbent setae, then vestiture is denser; claw not toothed subapically. Abdomen. Covered with decumbent setae.

Male genitalia ( Fig. 11 ). Left paramere: body with thick, protruding setae; apical process broadened; right paramere: body with rather short, thin, irregularly distributed setae; endosoma membranous, composed of two main lobes: first with large, folded sclerite basally, and distinctly thinner apically, second elongate and sharply terminated, with thin, membranous sclerite along its length, and with rather small, rounded sclerite originating near base of second lobe.

Female. Similar to male but larger.

Measurements. Ψ/ɗ: body length 7.8/6.13–6.5, width 2.2/1.68–1.7. Head. Length 1.55/1.35–1.36, width 1.2/1.0, diameter of eye in up view 0.25/0.25. Antenna. Length of segment I 1.3, II 2.0–2.1, III 2.5, IV 2.6. Labium. Length of segment I 2.5/2.0–2.1, II 1.59/1.34–1.36, III 1.84/1.59–1,65, IV 1.62/1.36. Pronotum. Length 1.48/ 1.15–1.24, width of anterior margin 0.84/0.68, length of lateral margin 1.48/1.28, width of posterior margin 1.94/ 1.5–1.54.

Etymology. The specific epithet pallescens is given to denote the overall coloration of the species.

Biology. Unknown.

Distribution. Philippines (Luzon).

Type material. Holotype ɗ and 2 paratypes ɗ and Ψ (three specimens on one pin; the specimen glued individually onto the card closest to the labels is the holotype): Mt. Maquiling, P. I. VII–18–36; R. L. Usinger Collector; Carvalho to Drake coll. ( USNM).

Figures

FIGURE 2. Dorsal habitus color photographs of the Rhinocylapus - group: A – B, Proamblia cunealis: A—paralectotype (Ψ), B—lectotype; C – D Proamblia elongata: C—holotype, D— ♂: Sandakan Borneo; E— Mycetocylapus minor (♂: Los Banos, P. I.); F— Mycetocylapus major (Ψ: Los Banos, P. I.); G— Mycetocylapus pacificus (holotype); H – I, Rhinocylapidius velocipedoides: H—lectotype, I— ♂: Formosa; Fuhosho; J— Rhinocylapus acutangulus (holotype); K— Rh. redeii (holotype); L— Rh. scutatus (♂: paratype); M— Rh. simplicicollis (holotype); N— Rh. sumatranus (holotype); O – P, Rh. pallescens: O—Ψ: paratype, P—holotype; Q-R, Rh. vittatus: Q—holotype, R— ♂: Sandakan, Borneo.

FIGURE 11. Male genitalia of Rhinocylapus pallescens: A, endosoma, B, left paramere, left lateral view; C, left paramere, dorsal view; D, right paramere. Scale bars: 0.1 mm. DSS—sclerotized portion of ductus seminis inside endosoma; ESS—endosomal sclerites.