Belostoma micantulum ( Stål, 1860 )

Ribeiro, Josė Ricardo Inacio, 2007, A review of the species of Belostoma Latreille, 1807 (Hemiptera: Heteroptera: Belostomatidae) from the four southeastern Brazilian states, Zootaxa 1477 (1), pp. 1-70 : 43-46

publication ID

https://doi.org/ 10.11646/zootaxa.1477.1.1

publication LSID

lsid:zoobank.org:pub:40401BCD-C731-44C4-9E01-A96FB3F8DF51

persistent identifier

https://treatment.plazi.org/id/CC39AC46-C103-7E78-FF66-13C2FDD49D1E

treatment provided by

Felipe

scientific name

Belostoma micantulum ( Stål, 1860 )
status

 

Belostoma micantulum ( Stål, 1860)

( Figs 12A–E View FIGURE 12 ; 19D View FIGURE 19 )

Zaitha micantula Stål, 1860: 84 .

Zaitha zelotypus White, 1879: 270 .

Belostoma micantulum: Kirkaldy & Torre-Bueno 1909: 191 .

Types.— Belostoma micantulum was described based on a syntype (Rio de Janeiro) deposited in NHRS (see Schnack 1976). Estévez (1996: 71) designated this male specimen syntype as lectotype [not examined].

Material examined.— ARGENTINA. 1 f ( MACN 50264 View Materials ): Corrientes, San Cosme , [without date], (Wurth [?]), J. A. de Carlo det. 2 f ( MACN 50331 View Materials ): same. * 2 m / 2 f ( MACN 50332 View Materials ): Formosa, Palo Santo [?], VI.1941, (Hopper [?]), J. A. de Carlo det. 1 m / 1 f ( MZSP): Salta, Pocitos , I.1959, (A. Martinez), J. R. I. Ribeiro det. 1999. BRAZIL. Amazonas — * 1 m ( INPA 0020959 View Materials ): “CUA”, Reserva Duke [?], 20. V.1982, (J. W. Morais), J. R. I. Ribeiro det. 1999. 1 f ( INPA 0020880 View Materials ): Igarapé Miratuca , “Parque Nacional Jau”, [01 º 57’ 08” S / 61 º 49’ 19” W], 14–29.VII.1993, ( R. Andreazze, W. Costa, and L. Aquino), J. R. I. Ribeiro det. GoogleMaps 1999, [“lençol com luz mista mercúrio, luz negra BL e BLB”]. 1 m ( INPA 0020881 View Materials ): same. 1 f ( INPA 0020876 View Materials ): Ilha de Marchantaria , 26.III.1976, (I. S. Goraveb [?]), J. R. I. Ribeiro det. 1999. 1 f ( INPA 0020961 View Materials ): same, ( Albuquerque ), J. R. I. Ribeiro det. 1999. *1 f ( INPA 0020963 View Materials ): same. 1 f ( INPA 0020879 View Materials ): Itacoatiara , “Fazenda Aruana-AM 010, km 215”, 25–26.IX.1992, (C. E. Motta, F. A. Peralta, R. S. G. Hutchings, B. R. Teles, and N. Hamada), J. R. I. Ribeiro det. 1999. 1 f ( INPA 0020960 View Materials ): Janauacá lake , IX.1976, ([?] Ício), J. R. I. Ribeiro det. 1999. 1 f ( INPA 0021056 View Materials ) [“2419”]: Manaus , V.1962, (“vários coletores” [?]), J. R. I. Ribeiro det. 1999. 1 m ( INPA 0021057 View Materials ) [“2478”]: same, 05.XI.1962, (“vários coletores” [?]), J. R. I. Ribeiro det. 1999. 1 f ( INPA 0021026 View Materials ): same, “ MAO ”, 28.XII.1985, (F. A. Peralta), J. R. I. Ribeiro det. 1999. 1 f ( INPA 0020953 View Materials ): “médio Purus ”, 30.VII.1979, (J. Campbell), J. R. I. Ribeiro det. 1999. 1 m ( INPA 0020954 View Materials ): same. 1 m ( INPA 0020891 View Materials ) [“A342”?]: Negro River, Igarapé Aduja [?], III.1960, (E. J. Fittkau), J. R. I. Ribeiro det. 1999. *1 f ( INPA 0020888 View Materials ) [“Sl/Sa 10”?]: Solimões River, Igarapé Grande , 29.IX.1959, ([?] Sioli and [?] Sattler), H. H. Weber det. 1966. 1 m ( INPA 0020889 View Materials ) [“Sl/Sa 10”?]: same. Ceará — 1 m ( AMNH): [without a more precise locality and date], (“ Mann and Baker – Stanford Expedition ”), J. R. I. Ribeiro det. 1999. 1 m ( AMNH): Barbalha , V.1969, (M. Alvarenga), J. R. I. Ribeiro det. 1999. Mato Grosso — 3 m / 2 f ( AMNH): Barra do Tapirapé , 26.VII.1963, (B. Malkin), J. R. I. Ribeiro det. 1999. 1 f ( INPA 0020943 View Materials ): Bodoquena , XI.1941, (“ Comissão I. O. Cruz ”), J. R. I. Ribeiro det. 1999. 1 m ( INPA 0020975 View Materials ): same. * 3 m / 4 f ( AMNH): Porto Velho, Tapirapé River , 18.XII.1962, (B. Malkin), J. R. I. Ribeiro det. 1999. Mato Grosso do Sul — *4 f (DZRJ-a 26): Corumbá, Popular Nova , 06.II.1997, (J. R. I. Ribeiro), J. R. I. Ribeiro det. 1999. Pará — 1 f ( AMNH): Belém- 8 km E, Ananindéua , 01[?]. VI.1973, ( R. T. Schuh), J. R. I. Ribeiro det. 1999, [at light]. * 6 m / 3 f ( AMNH): same, Guamá River , 22.III.1974, ( R. T. Schuh), J. R. I. Ribeiro det. 1999. * 2 m ( AMNH): Jacareacanga , XII.1968, (M. Alvarenga), J. R. I. Ribeiro det. 1999. PARAGUAY. 1 m ( MACN 44197 View Materials ): Guairá, Villarrica sic [= Villa Rica], XI.1938, [without collector], J. A. de Carlo det. SURINAM. * 1 m ( MACN): [without a more precise locality, date, and collector], N. Nieser det., J. A. de Carlo det.

Distribution.— ARGENTINA: Buenos Aires ( De Carlo 1930), Chaco ( De Carlo 1930), Corrientes ( De Carlo 1930), Entre Ríos ( De Carlo 1930), Formosa ( Estévez 1996), Itatí ( Schnack 1976), La Plata ( Mayr 1871), Misiones ( De Carlo 1930), Rosário ( Schnack 1976), Salta ( De Carlo 1938), Santa Fe ( De Carlo 1930), Santiago del Estero ( De Carlo 1930), Tucumán ( Estévez 1996). BOLIVIA: Chapare ( Estévez 1996), El Beni [as “Espíritu”] ( Estévez 1996), Santa Cruz ( Estévez 1996). BRAZIL ( Stål 1860): Amapá ( Nieser 1975), Amazonas ( Nieser 1975), Ceará ( Ribeiro 2005), Goiás ( Menke & Lauck 1962), Mato Grosso ( Estévez 1996), Mato Grosso do Sul ( Ribeiro 2005), Minas Gerais ( Nieser & Melo 1997), Pará ( Nieser 1975), Rio de Janeiro ( Mayr 1871), Rio Grande do Sul ( Estévez 1996), Tocantins [as Goiás –Ilha do Bananal] ( Estévez 1996). COLOM- BIA: Amazonas ( Estévez 1996), Cuatro Bocas ( Estévez 1996), Meta ( Roback & Nieser 1974). GUYANA: Alexander Village ( Nieser 1975), Georgetown ( Nieser 1975), Karanambo ( Nieser 1975), West Bank Demerata ( Nieser 1975). PARAGUAY ( De Carlo 1930): Alto [= Altoverá?] ( Estévez 1996), Colonia Fernheim ( Estévez 1996), Emboscada ( Estévez 1996), Primavera ( Estévez 1996), Puerto Guaraní ( De Carlo 1938), Sapucay ( Estévez 1996), Trinidad ( Estévez 1996), Guairá [as “Villarica” sic] ( Estévez 1996). SURINAM: Brokopondo ( Nieser 1975), Commewijne ( Nieser 1975), Coronie ( Nieser 1975), Marowijne ( Nieser 1975), Saramacca ( Nieser 1975), Paramaribo ( Nieser 1975), Republiek ( Nieser 1975), Zanderij ( Nieser 1975). URU- GUAY: Artigas [including Barra de Yucutuja] ( Ruffinelli & Pirán 1959), Arroyo de la Invernada ( Ruffinelli & Pirán 1959). VENEZUELA: Barinas ( Estévez 1996), Caracas ( Estévez 1996), Monagas ( Estévez 1996), San Esteban ( Estévez 1996).

Description.—Measurements (m / f). Total length (from apex of head to apex of hemelytra at rest) 10.4– 13.3 / 11.4–12.4; largest width of body 5.0–6.3 / 5.0–5.8; median length of pronotum 1.85–2.20 / 1.90–2.15; greatest pronotal width 3.75–4.25 / 3.80–4.30.

General coloration dark brown.

Body elliptical. Length of anteoculus 0.85 –0.96 times length of interoculus; length of rostral segment I 0.82–0.95 times length of segment II; anterior frontogenal suture equal to longer than posterior frontogenal suture; clypeus reaching or not reaching ocular line (0–0.03 mm); vertex without longitudinal median carina; posterior interocular width 1.82–2.02 times length of anteoculus, and 1.60–2.00 times width of eye; eyes rounded. Pronotum with longitudinal median carina on its posterior portion; greatest pronotal width 1.93–2.03 times its length; scutellum not reaching nodal line (0.06–0.51 mm), without longitudinal median carina; prosternal keel poorly prominent, rounded, obtuse at apex ( Fig. 12A View FIGURE 12 ). Pilosity not extending along genital operculum, covering about half of connexivum.

Male genitalia ( Fig. 12C View FIGURE 12 ).—Dorsal arms slightly divergent, covering the external margin of ventral diverticulum, rounded at apex in dorsal view; ventral diverticulum strongly curved, with median depression ( MED) on its caudal portion, without dorsal caudal protuberance in dorsal and lateral views, and without ventroapical protuberance in lateral and ventral views; caudal lateral margins of ventral diverticulum convex, not sinuous in ventral view; width of ventral diverticulum about 1.1 times its length in ventral view.

Variation.—I have seen a specimen from Corrientes, Argentina which has the prosternal keel more rounded ( Fig. 12B View FIGURE 12 ) than in other specimens.

Notes on biology.—According to Nieser (1975), B. micantulum is a common and eurytopic species, being most often collected at the edges of stagnant waters with vegetation or plant debris. Occasionally it has been found in running water or at places with little or no vegetation or plant debris ( Nieser & Alkins-Koo 1991). Moreover, it does not seem to prefer shade to exposure.

Schnack et al. (1986) stated that this species has a polygamous social system. According to them, polygynous B. micantulum specimens are more abundant than polyandrous ones.

Comparative notes.—As reported in this study, in Nieser (1975), and in Nieser and Alkins-Koo (1991), there is some variation in pronotal size in this species. Forms with pronotal widths less than or considerably more than twice the lengths have been found.

De Carlo (1938) and Nieser and Melo (1997) state that B. micantulum can be distinguished from B. plebejum by the length of body, which is more than 13.0 mm in B. plebejum . Several authors differentiate these two species only on the basis of differences in body length. Interestingly, according to Pereira (1992) and Pereira and Melo (1998), the lengths of adult B. plebejum differed significantly when they were reared exclusively on mosquito larvae or on snails. These differences can bring any B. plebejum specimens within the range of B. micantulum .

Within the B. plebejum group several species may be similar in general shape. The very similar B. plebejum , according to Nieser (1975), has nearly the same genitalia but it seems to be restricted to the central and southern part of South America. Based on Nieser and Melo (1997) and as herein stated, some B. micantulum specimens may be similar to B. plebejum and B. sanctulum (which has been treated as a species of the B. oxyurum group). Yet only the specimens from Minas Gerais agree in several respects with the specimens studied by Stål, Lauck, and Nieser, including the body length ( Menke & Lauck 1962; Nieser & Alkins-Koo 1991; Nieser & Melo 1997). It is possible that several authors apply the name B. micantulum to a complex of species, including B. pygmeum ( Dufour, 1863) and B. denticolle Montandon, 1903 ( Nieser 1975).

Belostoma sp. [species not yet described, see Estévez (1996) for more details], which may be similar in general shape, has the prosternal keel prominent and the ventral diverticulum of phallus with prominent thickenings along laterodorsal margins ( Estévez 1996). Belostoma lariversi De Carlo, 1960 may be very similar too, but it can be distinguished from B. micantulum by the presence of prominent thickenings along the laterodorsal margins of the ventral diverticulum of the phallus. According to Estévez (1996), B. micantulum can be distinguished from the remaining species of the B. plebejum group by the ventral diverticulum with a median depression on its caudal portion.

VI

Mykotektet, National Veterinary Institute

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

R

Departamento de Geologia, Universidad de Chile

V

Royal British Columbia Museum - Herbarium

MAO

Mircen Afrique Ouest

AMNH

American Museum of Natural History

T

Tavera, Department of Geology and Geophysics

MACN

Museo Argentino de Ciencias Naturales Bernardino Rivadavia

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Belostomatidae

Genus

Belostoma

Loc

Belostoma micantulum ( Stål, 1860 )

Ribeiro, Josė Ricardo Inacio 2007
2007
Loc

Belostoma micantulum: Kirkaldy & Torre-Bueno 1909: 191

Kirkaldy, G. W. & Torre-Bueno, J. R. de la 1909: 191
1909
Loc

Zaitha zelotypus

White, F. B. 1879: 270
1879
Loc

Zaitha micantula Stål, 1860: 84

Stal, C. 1860: 84
1860