Cyrtocapsus rostratus Reuter, 1908

Henry, Thomas J., 2022, Revision of the New World Plant Bug Genus Cyrtocapsus (Heteroptera: Miridae Bryocorinae: Eccritotarsini), with New and Revised Synonymies, Lectotype Designations, and Descriptions of 12 New Species, Zootaxa 5154 (1), pp. 1-48 : 36-37

publication ID 10.11646/zootaxa.5154.1.1

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Cyrtocapsus rostratus Reuter


Cyrtocapsus rostratus Reuter View in CoL

( Figs. 49–51 View FIGURES 49–57 , 93, 94 View FIGURES 85–98 )

Cyrtocapsus rostratus Reuter 1908a: 181 View in CoL (original description; Chile); Carvalho 1954: 13 (key), 1957: 96 (catalog); Henry & Carvalho 1987: 292 (key); Carvalho 1980: 646 (diagnosis); Schuh 1995: 542 (catalog), 2002–2013 (online catalog).

Cyrtocapsus femoralis View in CoL (of authors, in part): Ferreira & Rossi 1979: 133 (distribution), Ferreira & Henry 2011: 12 View Cited Treatment (distribution), Vélez et al. 2020: 4 (distribution).

Diagnosis. Cyrtocapsus rostratus ( Figs. 49–51 View FIGURES 49–57 ) is distinguished by the overall dark brown to fuscous dorsum, the often narrowly brownish-orange basal area of the pronotum, the triangular pale area at the apex of the corium, and the pale yellowish-white antenna and legs.

It is most similar to C. elutipes ( Figs. 20–22 View FIGURES 18–28 ) in the overall dark dorsal coloration, pale legs, and similar parameres, but is distinguished by the larger size, the longer antennal segment II, the frequently paler brownishorange basal margin of the pronotum, and the distinctive pale triangular mark at the apex of the corium bordering the cuneus.

Description. Male ( Fig. 49 View FIGURES 49–57 ) (n = 5): Length to apex of membrane 2.98–3.49 mm, length to base of cuneus 2.08– 2.43 mm, widest width across hemelytra 1.41–1.47 mm. Head: Width 0.75–0.80 mm, interocular width 0.40–0.43 mm. Labium: Length 0.96–1.00 mm. Antenna:; eyes Segment I length 0.54–0.60 mm; II, 0.68–0.70 mm; III (n = 3), 0.50–0.56 mm; IV (n = 1), 1.12 mm. Pronotum: Median length 1.00– 1.10 mm, basal width 1.52–1.66 mm.

Coloration: Head fuscous to black, clypeus dark brown becoming fuscous apically, inner margins of eyes and sides paler brown; eyes brownish red. Labium yellowish white, apex of segment IV darker brown; labrum often tinged with red. Antenna yellowish white. Pronotum fuscous to black, with posterior margin often narrowly paler brown to brownish orange. Scutellum black. Hemelytron fuscous to black, apical half of corium becoming dark brown, apex of corium adjacent to base of cuneus with a pale, yellowish-brown to yellowish-white triangular area; cuneus uniformly dark brown to fuscous; membrane whitish, veins dark brown. Ventral surface, including ostiolar auricle, fuscous to black. Legs, including coxae, uniformly yellowish white to white.

Texture and vestiture: Head shiny, weakly rugose, finely punctate, frons with fine transverse striations; inner margins of eyes, median line, and transverse striations with silvery, sericeous setae. Pronotum shiny, disc uniformly and deeply punctate, collar more finely punctate; calli prominent, separated by a deep pit, mostly impunctate with only a few fine punctures; anterior third around collar and calli with dense, silvery, sericeous setae, setae on disc finer and more scattered. Hemelytron dull, impunctate, with scattered and patches of silvery, sericous setae.

Male genitalia: Left paramere ( Fig. 93 View FIGURES 85–98 ) narrow at base, broadened through main body, and narrowing to a hook apically. Right paramere ( Fig. 94 View FIGURES 85–98 ) somewhat L-shaped, main body evenly broad and apically truncate.

Female: ( Figs. 50, 51 View FIGURES 49–57 ) (n = 5): Length to apex of membrane 3.07–3.36 mm, length to base of cuneus 2.21– 2.34 mm, widest width across hemelytra 1.39–1.50 mm. Head: Width 0.78–0.80 mm, interocular width 0.42 mm. Labium: Length 0.75–0.82 mm. Antenna: Segment I length 0.42–0.45 mm; II, 0.50–0.59 mm; III, 0.34–0.42 mm; IV 0.56–0.62, mm. Pronotum: Median length 0.85–0.90 mm, basal width 1.20–1.25 mm. Length and width as given in original description ( Reuter 1908a): Length 2.5 mm; width 1.5 mm.

Host. Ipomoea sp. [ Convolvulaceae ]. This species was common on Ipomoea spp. in Jujuy and Salta provinces, Argentina.

Distribution. Described and previously known from only Tambillo, Chile ( Reuter 1908a). Based on the material examined, new country records are Argentina, Brazil, and Paraguay. Records of C. femoralis (of authors) from Brazil (e.g., Ferreira & Rossi 1979, Ferreira & Henry 2011, Vélez et al. 2020) should be referred to C. rostratus .

Discussion. Although I have examined only dorsal and lateral images of the lectotype (designated below) of C. rostratus , the narrow brownish-orange basal margin of the pronotum and the pale triangular mark at the apex of the corium are distinctive for many specimens of this species, though more uniformly dark individuals are common. The characters in this diagnosis are consistent with the many specimens I have studied from northern Argentina, Brazil, and Paraguay. It is possible that once more material, including males, is discovered in Chile, C. rostratus will prove distinct from the specimens I am including under it from Argentina, Brazil, and Paraguay.

Type designation. It is not clear how many specimens Reuter (1908a) had before him when describing C. rostratus ; therefore, the single female ( Figs. 50, 51 View FIGURES 49–57 ) in the Naturhistorisches Museum Wien ( NMW) is considered a syntype. To ensure nomenclatural stability, I designate this specimen as the lectotype for C. rostratus : [ CHILE] label 1 (handwritten), “Otto. 1895, Tambillo”; 2 (handwritten) “ Cyrtocapsus rostratus n. sp. det. O. M. Reuter”; 3 (red handwritten), “ Syntypus ”; 4 (here added), “ LECTOTYPE: ♀ Cyrtocapsus rostratus Reuter , desig. by T.J. Henry.”

Other material examined. ARGENTINA: Jujuy Prov.: 2 ♂♂, 12 ♀♀, Jujuy Prov., Prov. Rd. 1, 3 km E of Natl. Rd. 34, 23º02.431’S, 64º, 56.223’W, 450 m, 12 Feb. 2016, T.J. Henry & P.M. Dellapé, ex Ipomoea sp. ( USNM) . Salta Prov.: 18 ♂♂, 19 ♀♀ (and nymphs), Salta Prov., N. of Oran, Hwy 50, NW on rd to Abra Grande , 22º59.063’S, 64º72.425’W, 7 Feb. 2016, T.J. Henry & P.M. Dellapé, ex Ipomoea sp. (4 ♂♂, 4 ♀♀, MLP; 14 ♂♂, 15 ♀♀ USNM) ; 7 ♂♂, 3 ♀♀, Salta Prov., Hwy. 50, 8 km S of Oran, 23º13.534’S, 64º17.219W, 8 Feb. 2016, T.J. Henry & P.M. Dellapé ( USNM) GoogleMaps ; 1 ♀, Salta Prov., Pichanal, jct. Prov. Rd. 50 & 34, 375 m, 23º18.415’S, 64º13.114’W, 9 Feb. 2016, T.J. Henry and P.M. Dellapé ( USNM) GoogleMaps . BRAZIL: Bahia : 1 ♀, Bahia , Entre Rios , 4 June 1908 [no collector] ( USNM) . Goias: 2 ♂♂, 2 ♀♀ (four points on one pin), Goias, Aragarças , J.C.M. Carvalho [no date] ( USNM) . Minas Gerais: 1 ♀, Minas Gerais, Viçosa , 13 Oct.–1 Nov. 1985, T.J. Henry & P.S. Fiuza F. ( USNM) . PARAGUAY: 1 ♂, Dept. Canindeyu, Reserva Natural del Bosque Mbaracayú , 19–22 Nov. 2016, J.E. Eger ( USNM) .


Naturhistorisches Museum, Wien


Smithsonian Institution, National Museum of Natural History














Cyrtocapsus rostratus Reuter

Henry, Thomas J. 2022

Cyrtocapsus femoralis

Velez, M. & Coelho, L. A. & Santos Martins, D. & Ferreira, P. S. F. 2020: 4
Ferreira, P. S. F. & Henry, T. J. 2011: 12
Ferreira, P. S. F. & Rossi, D. 1979: 133

Cyrtocapsus rostratus

Schuh, R. T. 1995: 542
Henry, T. J. & Carvalho, J. C. M. 1987: 292
Carvalho, J. C. M. 1980: 646
Carvalho, J. C. M. 1954: 13
Reuter, O. M. 1908: 181
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