Marinonicoris myrmecoides Carvalho

Henry, Thomas J., 2015, Revision of the Ceratocapsine Renodaeus group: Marinonicoris, Pilophoropsis, Renodaeus, and Zanchisme, with descriptions of four new genera (Heteroptera, Miridae, Orthotylinae), ZooKeys 490, pp. 1-156 : 39-40

Taxon classification Animalia Hemiptera Miridae

Marinonicoris myrmecoides Carvalho Figs 93, 94, 280-282

Marinonicoris myrmecoides Carvalho, 1988: 877 (orig. descrip.); Carvalho and Froeschner 1990: 328 (type data, depository); Schuh 1995: 141 (cat.); Carpintero et al. 2006: 8 (list, distr.).

Diagnosis.

This species (Figs 93, 94) is recognized by the generic characters, including the swollen pronotum, constricted hemelytra, the golden and silvery scale-like setae on the clavus and corium, the lack of erect, bristle-like dorsal setae, and the male genitalia, especially the parameres (Figs 280, 282).

Description.

Male (n = 2): Length 2.98-3.36 mm, width 1.14-1.18 mm. Head: Width 0.72-0.77 mm, interocular width 0.30-0.34 mm. Labium: Imbedded in glue. Antenna: Segment I, length 0.16-0.21 mm; II, 0.51-0.58 mm; III, 0.30-0.37 mm; IV, 0.34-0.40 mm. Pronotum: Length 0.51-0.58 mm, basal width 0.91-1.04 mm.

Coloration: Head: yellow brown to dark brown. Antenna: Segment I yellowish brown, with a red streak on inner margin; segments II–IV dark brown. Pronotum: Dark brown, area around calli sometimes slightly paler brown. Scutellum: Brown. Hemelytron: Dark brown, area on basal half of corium and clavus appearing paler brown because of setal coloration. Ventral surface: Thoracic area yellowish brown, mesopleural area with a glaucous sheen; abdomen dark brown to fuscous, glaucous stridulatory patch distinct. Ostiolar evaporative area: Dark brown, with a red knob at middle of auricle. Legs: Dark brown, apices of hind femora and tibiae and all of tarsi and claws pale yellowish brown.

Structure, texture, and vestiture: As in generic description. Head, pronotum, and hemelytra shiny. Labium: Extending about to hind coxae or base of abdomen. Each hemelytron with two rows of silvery scale-like setae, one across the base of the corium and clavus, and one across the middle of the corium and apex of the clavus; area between densely covered with golden scale-like setae (but lacking erect, bristle-like setae).

Male genitalia: Left paramere (Fig. 280): Elongate, distal stem-like, with beak-like apex elongate, basal half stouter with a short, slender, apically rounded arm. Right paramere (Fig. 282): Stout, with a slender, apically bifid arm near base. Phallotheca (Fig. 281): Stout, apex with three comb-like processes.

Female (n = 4): Length 2.62-2.98 mm, width 1.02-1.18 mm. Head: Width 0.70-0.72 mm, interocular width 0.30-0.35 mm. Labium: Imbedded in glue. Antenna: Segment I, length 0.16-0.18 mm; II, 0.50-0.53 mm; III, 0.55 (others missing) mm; IV missing. Pronotum: Length 1.00-1.03 mm, basal width 0.80-0.91 mm. Similar to male in color, texture, and vestiture.

Distribution.

Previously known only from the holotype taken in Paraná, Brazil. Carpintero et al. (2006) reported specimens from Argentina, Paraguay, and Uruguay. Rio Grande Norte is a new Brazilian state record.

Host.

Unknown.

Discussion.

The holotype, though not borrowed, was examined during a visit to the Museu Nacional collection (MNHN) in Rio de Janeiro. This species is easily distinguished by the structure of the male genitalia.

Type material examined.

Holotype ♂, BRAZIL: Paraná: Telêmaco Borba, Reserva Samuel Kalbin, [24.35ES 50.6167EW], 669 m, 02 Nov 1986, Lev. Ent. Profau Par, lâmpada (00175020) (MNRJ).

Other specimens examined.

ARGENTINA:Chaco: Fontana, Unknown, 1♀ (00071514) (USNM); 1♂, Martin Garcia Isl., Buenos Aires Prov., Nov. 96, M. C. Coscarón (MACN); 1♂, Arroya Martires, Misiones, Aug. 1995, D. L.Carpintero (MACN); 1♀, Corrientes Prov., Bella Vista, June 1936 (MACN). BRAZIL:Sao Paulo: Piracicaba, 22.73931ES 47.655EW, Unknown, 1♀ (00071513) (USNM). 1♂, Natal, Rio Grand Norte, Feb. 1952, M. Alvarenga (MNHN). PARAGUAY: 1♂, Arroya Aguapey, Mar. 1994, D. L. Carpintero (MACN). URUGUAY: 1♀, Rivera Dept., Sierra and Arroya de al Aurora, 12 Jan. 1971 (MACN).