Revision of the plant bug genus Xenocylapidius (Hemiptera, Heteroptera, Miridae, Cylapinae), with descriptions of five new species from Australia and New Caledonia Author Wolski, Andrzej Author Gorczyca, Jacek text ZooKeys 2014 459 73 94 http://dx.doi.org/10.3897/zookeys.459.8015 journal article http://dx.doi.org/10.3897/zookeys.459.8015 1313-2970-459-73 372D3ECF7CEB497AA18EE841D70D49F3 372D3ECF7CEB497AA18EE841D70D49F3 Taxon classification Animalia Hemiptera Miridae Xenocylapidius gemellus Wolski & Gorczyca sp. n. Figures 5, 31-36 Diagnosis. Recognized by the mottled, brownish yellow coloration (Fig. 5); the dirty yellow antennal segment II (Fig. 5); the medial sclerite (MS) stout, occupying more than one third of endosoma, basal one third nearly rounded, apical two thirds tapering toward apex, sharply pointed apically; the endosomal sinistrolateral sclerite (SLS) relatively small, occupying one fourth of endosoma, bifurcate at basal one third, remainder of sclerite cylindrical, somewhat narrowed apically (Fig. 32); the extreme apex of apical process of left paramere rounded in dorsal view (Fig. 35); and the right paramere sickle-shaped (Fig. 36). Most similar to Xenocylapidius acutipennis in sharing a brownish yellow mottling on dorsum (Figs 1, 5), the rounded extreme apex of apical process of the left paramere when viewed dorsally (Figs 19, 35), and sickle-shaped right paramere. This new species can, however, be distinguished by the dark dirty yellow antennal segment (Fig. 5) and the shape of the endosoma (Figs 32). Description. Male. COLORATION (Fig. 5). Dorsum dark brown with dirty yellow and whitish areas. Head. Dark brown dirty yellow; antenna dirty yellow; labium yellowish. Thorax.Pronotum. Dark brown dirty yellow. Mesoscutum and scutellum. Dark brown with a whitish patch apically. Thoracic pleura. Dark brown with brown and dirty yellow areas. Hemelytron. Brown, mottled with yellow; membrane grey, venation dirty yellowish white. Legs. Procoxa dark brown; meso- and metacoxa dirty yellowish; pro- and mesofemur dark brownish; remaining segments of pro- and mesoleg dirty yellow. Abdomen. Dirty yellow. STRUCTURE, TEXTURE, AND VESTITURE (Fig. 5). Head. Antennal segment II weakly broadened toward apex, covered with moderately dense, semirecumbent setae, sparse on basal one-fifth of segment II and dense on remainder of segment. Thorax.Pronotum. Lateral margins sharply carinate, somewhat elevated. Mesoscutum and scutellum. Scutellum weakly convex. Hemelytron. Covered with short, relatively dense, adpressed, black setae. Male genitalia.Aedeagus (Figs 32-33). Basal sac occupying one third of endosoma, apical ring (AR) extended into long, irregular, apically broadened and serrate sclerite dextrolaterally; sclerotized portion of ductus seminis inside endosoma (DSS) arcuate, nearly cylindrical at basal two-thirds, apically extended into an irregular, nearly ovoid fig; apical one third of endosoma with two bundles of spiculi (SP1 and SP2); medial sclerite (MS) stout, occupying more than one third of endosoma, basal one third nearly rounded, apical two thirds tapering toward apex, sharply pointed apically; sinistrolateral sclerite (SLS) relatively small, occupying one fourth of endosoma, bifurcate at basal one third, remainder of sclerite cylindrical, somewhat narrowed apically. Left paramere (Figs 34-35). Apical process: lateral view: broadened and weakly arcuate basally, slightly tapering toward apex, obtuse apically; dorsal view: lateral margins weakly arcuate, extreme apex rounded; sensory lobe: stout, obtuse apically. Right paramere (Fig. 36). Sickle-shaped; apical process: relatively long, weakly curved and slightly tapering toward apex; paramere body: thin, arcuate. Measurements. Holotype ♂: Body. Length 5.50, width 2.00. Head. Length 0.88, width 0.77, interocular distance 0.33. Antenna. Length of segment I 0.75, II 1.8, III 0.75, IV (partly broken). Labium. Immeasurable in specimen examined. Pronotum. Length 0.83, width of anterior margin 0.68, length of lateral margin 0.90, width of posterior margin 1.70. Female. Unknown. Biology. Unknown. Distribution. Australia (Queensland) (Fig. 31). Etymology. The specific name is derived from the Latin "gemellus" , meaning twin, and is used to denote the similarity of this species to Xenocylapidius acutipennis . Type material. Holotype ♂: QUEENSLAND, Cedar Creek, Mars 1910, E. Mjoeberg (NHRS). Figures 32-41. Male genitalia of Xenocylapidius gemellus (32-36) and Xenocylapidius rolandi (37-41): 32, 37 Endosoma (dorsal view) 33, 38 Basal sac of endosoma (ventral view) 34, 39 Left paramere (left lateral view) 35, 40 Left paramere (dorsal view) 36, 41 Right paramere (right lateral view). APR = apical process of paramere; AR = apical ring of endosomal basal sac; BPR = basal process of paramere; BSC = basal sac; DSS = sclerotized portion of ductus seminis inside endosoma; MS = medial sclerite; PB = paramere body; SL = sensory lobe; SLS = sinistrolateral sclerite; SP1 and SP2 = endosomal spiculi. Figures 42-46. Male genitalia of Xenocylapidius tamasi : 42 Endosoma (dorsal view) 43 Basal sac of endosoma (ventral view) 44 Left paramere (left lateral view) 45 Left paramere (dorsal view) 46 Right paramere (right lateral view). APR = apical process of paramere; AR = apical ring of endosomal basal sac; BPR = basal process of paramere; BSC = basal sac; DLS = dextrolateral sclerite; DSS = sclerotized portion of ductus seminis inside endosoma; PB = paramere body; SL = sensory lobe; SP1, SP2, and SP3 = endosomal spiculi. Figure 47. Dorsal habitus drawing of Xenocylapidius rolandi (holotype).