Xenocylapidius Gorczyca

Wolski, Andrzej & Gorczyca, Jacek, 2014, Revision of the plant bug genus Xenocylapidius (Hemiptera, Heteroptera, Miridae, Cylapinae), with descriptions of five new species from Australia and New Caledonia, ZooKeys 459, pp. 73-94 : 74-76

Taxon classification Animalia Hemiptera Miridae

Xenocylapidius Gorczyca

Xenocylapidius : Gorczyca 1997: 179, 183 (sp. n.), 1999: 16 (key to species), 2000: 49 (list), 2006: 70 (catalog); Chérot and Gorczyca 1999: 217 (note); Carpintero and Chérot 2014: 62 (note).

Diagnosis.

Recognized by the following combination of characters: labial segment II subdivided medially or subapically; lateral margin of pronotum somewhat elevated; scent gland efferent system broad, occupying entire ventral margin of metepisternum; endosoma with a characteristic sclerotized basal sac with a relatively broad, ringlike structure apically (AR = apical ring) that is composed of numerous denticles and spiculi (Figs 16-17, 21-22, 26-27, 32-33, 37-38, 42-43); left paramere with a long, protruding sensory lobe (SL) (Figs 18-19, 23-24, 28-29, 34-35, 39-40, 44-45).

Redescription.

STRUCTURE, TEXTURE, AND VESTITURE (Figs 1-15). Macropterous, elongate oval. Head. Elongate horizontally, conical; antennal segment I gradually thickened toward apex, covered with sparse, short, adpressed setae and sometimes covered with a few bristlelike, protruding setae apically; segment II weakly broadened toward apex, covered with moderately dense, semirecumbent setae and sometimes with sparse, bristlelike, protruding setae on apical half; segments III and IV thin, with diameter about twice as thin as diameter of segment II, mixed with long, moderately dense, semirecumbent setae and with a few, bristlelike, protruding setae; labium thin, reaching medial part of abdomen or beyond; segment I subdivided near medial part, extending beyond base of head to anterior edge of xyphus; segment II subdivided subapically. Thorax.Pronotum. Trapezoidal; collar present, thin; humeral angle usually furnished with single, bristlelike, rather long, protruding seta; calli moderately convex, broad, occupying anterior two thirds of pronotum; lateral margin usually strongly carinate and somewhat elevated, rarely weakly carinate and not elevated; posterior margin arcuate. Mesoscutum and scutellum. Mesoscutum well exposed; scutellum flattened or weakly convex. Thoracic pleura. Proepisternum and proepimeron shiny; remaining pleura matte; scent gland efferent system broad, occupying entire ventral margin of metepisternum. Hemelytron. Usually covered with very short, relatively dense, adpressed, black setae, rarely with sparse, relatively long, protruding setae; membrane with major cell nearly rectangular, minor cell clearly present. Legs. Relatively long; profemur usually with several protruding, thick, relatively long setae on inner surface; tarsus bisegmented; tarsomere II subdivided medially; pretarsal claw toothed subapically.

Male genitalia.Aedeagus (Figs 16-17, 21-22, 26-27, 32-33, 37-38, 42-43). Ductus seminis thin, with an outer wall fine and membranous; base of endosoma with a sclerotized sac (BSC), occupying one third to almost half of endosoma, enveloping sclerotized part of ductus seminis inside endosoma (DSS), with a large, not fully closed apical ring (AR) composed of tiny spiculi or/and denticles; secondary gonopore distinct; endosoma usually with 1-3 bundles of distinct spicules (SP1, SP2, and SP3); base of endosoma sometimes with an irregular, sclerotized fig (BP = basal fig); medial portion of endosoma often with a large sclerite (MS = medial sclerite); apical portion of endosoma with 1-2 large sclerites (dextrolateral sclerite = DLS and a sinistrolateral sclerite SLS). Left paramere (Figs 18-19, 23-24, 28-29, 34-35, 39-40, 44-45). Apical process: dorsal view: extreme apex strongly narrowed, usually rounded and weakly curved; paramere body: dorsal surface with bundle of thick, protruding setae; sensory lobe: convex and stout.

Remarks.

Xenocylapidius is differentiated from other genera of Cylapinae primarily by the presence of the characteristic sclerotized sac at the base of endosoma (BS = basal sac) with the apical portion composed of numerous denticles and spiculi (AR = apical ring) surrounding well developed sclerotized part of ductus seminis inside endosoma (DSS) (Figs 16-17, 21-22, 26-27, 32-33, 37-38, 42-43) and by the large, stout sensory lobe (SL) of the left paramere (Figs 18-19, 23-24, 28-29, 34-35, 39-40, 44-45). In other Cylapinae the endosoma is usually furnished with more or less developed sclerotized part of the ductus seminis (DSS) (e.g. Carvalho and Fontes 1968; Carvalho and Lorenzato 1978; Cassis et al. 2003; Wolski 2010, 2013; Wolski and Henry 2012, Wolski and Gorczyca 2012, 2014) but it never is embraced by the basal sac (BS) as in Xenocylapidius .

Xenocylapidius is superficially similar to Peritropis Uhler, primarily in sharing elevated lateral margins of pronotum but can be easily distinguished by the shape of the male genitalia.

Key to species of Xenocylapidius