Cryphocricos vianai De Carlo, 1951

Sites, Robert W., 2021, A review of Cryphocricos Signoret, 1850 (Naucoridae: Cryphocricinae) with descriptions of three new species, Zootaxa 4958 (1), pp. 72-94 : 88-89

Cryphocricos vianai De Carlo

( Figs 37–38 )

Cryphocricos vianai De Carlo 1951 : Rev. Soc. Entomol. Argentina 15:72–74.

Cryphocricos montei De Carlo 1951 : Rev. Soc. Entomol. Argentina 15:74–76. Synonymized by Lopez Ruf 1991, Rev. Soc. Entomol. Argentina 49:110–111.

Type repository: Museo Argentino de Ciencias Naturales “Bernardino Rivadavia” (Buenos Aires, Argentina) .

Type locality: Argentina: Misiones Prov., Dpto. Concepción, Santa Maria .

Discussion: The holotype is a brachypterous female ( Figs. 37–38 ). The junior synonym, C. montei , was described based on a single brachypterous male from Escaramuça, Brasil, which is located ca. 50 km NNE from Ribeirão Preto in the state of São Paulo. Cryphocricos vianai has been found in lotic habitats in Minas Gerais, Brazil ( de Souza et al. 2006), including only in the streams around the Serra da Canastra but not in the mountains, although it is known from some mountain streams in the Serra do Cipó ( Pelli et al. 2006). This species was reported to occur in mountain streams with fair to strong current with a pebble or stone substrate ( de Melo & Nieser 2004). In a study to determine the effect of physico-chemical variables on aquatic Heteropteran communities in streams in Mato Grosso, Brazil, Cryphocricos cf. vianai was found only in a preserved stream and not in degraded streams ( Dias-Silva et al. 2010). The fifth instar was described by Lopez Ruf (1991) based on a single specimen from the type locality. The genital capsule was described in general for the genus and the flagellum of the aedeagus of a 9.5 mm specimen of C. vianai measured 23 mm ( De Carlo 1965).

Diagnosis: This species can be distinguished from C. rufus by the dark-brown color, the conspicuous wrinkles on the mesosternum, and the lack of granulation (=tubercles) on the hemelytra and scutellum ( De Carlo 1951). In a treatment of species of Cryphocricos known or thought to occur in Argentina, Lopez Ruf (1991) provided a detailed diagnosis for C. vianai , although it was not comparative.

Figures

FIGURES 35–38. Cryphocricos schubarti (35) holotype, dorsal and (36) allotype, ventral. Cryphocricos vianai holotype (37) dorsal and (38) ventral. Fig. 35 and C. vianai photos courtesy of H.D.D. Rodrigues.