Cyrtomenus emarginatus Stål, 1862

Avendaño, José Mauricio, Correia, Maíra Andrade, Grazia, Jocelia & Schwertner, Cristiano Feldens, 2024, Review and phylogeny of Cyrtomenus Amyot & Serville (Hemiptera: Cydnidae: Cydninae) based on morphological characters, Zootaxa 5453 (3), pp. 301-340 : 332-335

Cyrtomenus emarginatus Stål, 1862

( Figs. 5F , 6F , 15 , 16 )

Cyrtomenus emarginatus Stål, 1862: 95 ; 1876: 27; Walker, 1867: 147.

Syllobus emarginatus ; Signoret, 1879: CLXXIII; 1881: 322, pl. 10, fig. 40; Distant, 1880: 4, pl. 3, fig. 6; Uhler, 1886: 3; Lethierry & Severin, 1893: 64; Torre Bueno, 1939: 177.

Cyrtomenus (Syllobus) emarginatus ; Froeschner, 1960: 518.

Material examined: MÉXICO: Chiapas: 1♀, Agua Azul , 1-May-78, E. Barreño, UNAM ; 1♂, Frontera Corozal , 130, 20-Mar-04, A. Ibarra, UNAM ; 1♂, Ocosingo,: Montes Azules , 2-Jun-99, L. Cervantes, UNAM ; 2♂, Palenque , 19-May-84, M. García, UNAM ; Oaxaca: 1♀, San José el Paraíso, 350, 18-Jun-09, 28-Jun-09, D. Curoe, N17°07’ W96°27’, UNAM ; Veracruz: 1♀, Jalapa , 1-Feb-85, J. Peña, UNAM ; GUATEMALA: Petén: 1♂, P.N. Ixpanpajul, RI CA-13, nr Santa Ana, 180, 22-Jul-07, RS Zack, UNAM ; HONDURAS: Roatán: 1♀, Punta Gorda , 1-Jul-34, J. White, AMNH ; COLOMBIA: Amazonas: 1♀, Puerto Alegría , 120 masl, 3-Sep-12, C. Rodríguez, UNAB ; BRAZIL: Amapá: 1♂, Porto Platón , 06-Dec-1982, J.I. Lacerda col., UFRG ; 1 specimen, Serra do Navio , Jul-1959, J. Lane col., MZUSP ; Pará: 2 specimens, Belém, Casa da Bomba , 04-Nov-1959, Travassos col., FIOC ; 6 specimens, Cachimbo , 14 to 21-Sep-1955, Travassos col., FIOC ; 6 specimens, Cachimbo , Oct-1955, P. Pereira col., MZUSP ; 1 specimen, Canindé, Aldeia Araçu , May-1963, B. Malkin col., MZUSP ; 1 specimen, Canindé, Rio Gurupi , Apr-1963, B. Malkin col., MZUSP ; 1 specimen, Oriximiná , 08-Sep-1968, P. Eleres col., MZUSP ; Amazonas: 2 specimens, Manaus, Uypiranga , Dec-1941, B. Pohl col., MZUSP ; 1♂, Manaus, Uypiranga. Rio Negro , Dirings col., MCNZ ; Piauí: 4 specimens, Teresina , 1953, Oliveira col., MNRJ ; Tocantins: 1♂ 1♀, Palmas, Serra do Langeado. Fazenda Céu , 01-Nov-1992, UFRG ; Mato Grosso: 3 specimens, Alto Xingú , Sep-1955, Vilasboas col., FIOC ; 2♀, Nova Xavantina , 20-Oct-1999, UNIFESP ; 15 specimens, São Domingos , Oct-1949, 123, MZUSP ; 2 specimens, São Domingos , Nov-1949, MZUSP ; 1 specimen, Utiariti, Rio Papagaio , 22 to 31-Oct-1966, Lenko & Pereira col., MZUSP ; 1 specimen, Vale de São Domingos , Nov-1949, Weener col., MACN ; 1 specimen, Xavantina , 19-Oct-1956, MZUSP ; 4♂ 8♀, Xingú , Sep-1955, O. Vilas col., MCNZ ; Rondônia: 1♂, Porto Velho, Rio Madeira , Dirings col., MCNZ ; Goiás: 1♀, Alto Paraiso, Cerrado , 10-Oct-1999, AM de Faria col., UNIFESP; 2 specimens, Aragarças , 14-Oct-1959, Alvarenga col., MNRJ ; 1 specimen, Pires do Rio , 1956, Pacheco col., MNRJ ; Minas Gerais: 3 specimens, Xavantina , 1955, Alencar col., MNRJ ; Distrito Federal: 4♂ 4♀, Brasilia , 20-Oct-1965, M. Becker col., MCNZ ; 1 specimen, Brasilia , Sep-1961, Guimarães col., FIOC ; Rio de Janeiro: 1♀, Itatiaia, 1937, FIOC ; 4 specimens, Itatiaia , 02-Nov-1946, Zikán col., FIOC ; 2 specimens, Itatiaia , 24-Nov-1947, Zikán col., FIOC ; 2 specimens, Itatiaia , 09-Oct-1948, Zikán col., FIOC ; 2 specimens, Itatiaia, Estação Biologica , Nov-1941, Zikán col., MNRJ ; São Paulo: 1♀, Pirassununga, CIEIP-USP : 17-Oct-1992, F. Cordeiro col., UFRG ; Santa Catarina: 4♂ 7♀, Itapiranga , Sep-1953, MCNZ ; 1 specimen, Ribeirão Preto, Faculdade Medicina , Nov-1954, M.P. Barreiro col., MZUSP ; 1 specimen, Ribeirão Preto , Cidade Universitária USP , 16-Mar-1989, M.J. Ferreira, MZUSP . Rio Grande do Sul: 1♂, Derrubadas, Campus UnB, 13-Nov-1965, M. Becker col., MCNZ ; 3♂, Frederico Westphalen , 17-Oct-2005, Massolino & Mansur col., UFRG ; 2♂, P.E. Turvo , 29-Oct-2003, A. Barcellos col., MCNZ ; 1♂ 1♀, Porto Alegre, Museu Anchieta. Serro Azul , Feb-1950, MCNZ ; PERÚ: Huánuco: 1♂, Leoncio Prado, Tingo María , 26-May-47, J. Pallister, alt. 2200 ft, AMNH ; ARGENTINA: Buenos Aires: 1♀, Buenos Aires , Puente Victorino de la Plaza, Jan-38, Denier, MLPA ; Misiones: 1♀, Loreto, Ogleblin, MLPA ; Santa Fe: 1♂, Gral Obligado, Lanteri , 5-Jan-46, Bruzzone, MLPA .

Diagnosis: Apices of the mandibular plates longer than clypeus forming triangular projections; lateral surface of the eyes without setae.

Redescription. Total length: 10.8–13.3 mm.

Head: Flattened dorsally, surface polished; mandibular plates with radiating rugae and punctures, submarginal row of setigerous punctures, apices forming blunt to acute triangles towards front, clypeus shorter than mandibular plates, apex strongly narrowed ( Fig. 16B ); labium reaching mesocoxae, labial segment II without semicircular foliaceous lobe ( Fig. 16D ).

Thorax: Pronotum with scattered coarse punctures on the anterior submargin, lateral surfaces, and posterior half; lateral submarginal row of six to nine setigerous punctures; transverse impression weak, marked by irregular, interrupted row of punctures ( Fig. 16A ). Propleuron polished, with numerous fine punctures in depression. Scutellum impunctate across base and apex, disc with widely scattered, coarse punctures. Hemelytron: Clavus and corium polished; clavus with single row of large punctures; mesocorial punctures forming two more or less distinct rows paralleling claval suture, elsewhere with scattered punctures; exocorium densely punctate; costa with 0–3 setigerous punctures ( Fig. 16A, D ). Mesopleural evaporatorium with pseudoperitreme; posterolateral area impunctate. Metatibia curved and compressed but not expanded near apex ( Fig. 16D ).

Abdomen: Sternites III to VI polished, without rows of setigerous punctures across segments ( Fig. 16D ).

Type data: The type specimen is lost, original description indicate that the type locality is Mexico.

Distribution: Mexico, Guatemala, Honduras, Costa Rica, Colombia First record, French Guiana, Brazil, Peru, Argentina —( Fig. 15 ).

Remarks: One of the biggest representatives of Cyrtomenus and easily recognizable by the projection of the mandibular plates, its biology, and ecology remain unknown.

Figures

FIGURE 5. Female genitalia: (A) Sehirus cinctus (Palisot, 1811); (B) Scaptocoris minor Berg, 1894; (C) Cydnus aterrimus (Forster, 1771); (D) Prolobodes giganteus (Burmeister, 1835); (E) Cyrtomenus crassus Walker, 1867; (F) C. emarginatus Stål, 1862; (G) C. grossus Dallas, 1851; (H) C. Cyrtomenus mirabilis (Perty, 1830); (I) C. teter (Spinola, 1837)—spermatheca: (J) Prolobodes giganteus; (K) C. mirabilis; (L) Tominotus laeviculus (Berg, 1879). Scale bar: 0.5 mm.

FIGURE 6. Male genitalia: ((A) Sehirus cinctus (Palisot, 1811); (B) Scaptocoris minor Berg, 1894; (C) Cydnus aterrimus (Forster, 1771); (D) Prolobodes giganteus (Burmeister, 1835); (E) Cyrtomenus teter (Spinola, 1837); (F) C. emarginatus Stål, 1862—pygophore dorsal: (G) Ectinopus rugoscutum Signoret 1881b; (H) Microporus obliquus Uhler, 1872; (I) Rhytidoporus indentatus Uhler, 1877; (J) C. mirabilis (Perty, 1830)—phallus dorsal: (K) Ectinopus rugoscutum; (L) C. crassus Walker, 1867; (M) Prolobodes giganteus—phallus Lateral: (N) C. mirabilis; (O) C. ciliatus (Palisot de Beauvois, 1805)—left paramere: (P) Ectinopus rugoscutum; (Q) Prolobodes giganteus (Photo by María Cristina Mayorga); (R) C. ciliatus; (S) C. mirabilis. Scale bar: 0.5 mm.

FIGURE 15. Distribution map of C. emarginatus and C. grossus.

FIGURE 16. C. emarginatus: (A) dorsal view; (B) head dorsal; (C) evaporatorium; (D) latero-ventral view. Scale bar: 1 mm.