Belostoma costalimai De Carlo, 1938

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: 19-20

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Belostoma costalimai De Carlo, 1938


Belostoma costalimai De Carlo, 1938  

( Figs 5A–H View FIGURE 5 ; 17B View FIGURE 17 ; 23A View FIGURE 23 )

Belostoma costalimai De Carlo, 1938: 234   , plate VI (Fig. 72).

Belostoma truxali De Carlo, 1960: 47   . Syn. n.

Types.— Belostoma costalimai   was described based on a male holotype (Rio de Janeiro) [not examined] and a female paratype (São Paulo) both deposited in MACN; a male paratype (Minas Gerais) deposited in FIOC according to De Carlo (1938: 235) but which is, however, deposited in MNRJ; and another paratype [?] [not examined] deposited in Dr. Aleixo de Vasconeclos’ sic [= Vasconcelos] collection (see Lauck 1964). Although Lauck (1964) indicates that the holotype of this species is deposited in MACN, Dr. Bachmann, curator at this Museum, informs me that this institution does not have the B. costalimai   type.

Material examined.— BRAZIL. Espírito Santo — * 1 m / 2 f ( MNRJ 159 View Materials ): Linhares, Parque Sooretama , X.1959, (D. Zajclw), J. R. I. Ribeiro det.   1999. Minas Gerais — *1 f ( MNRJ 110 View Materials ): Barra de Paraopeba , [without date], ( V. Souza), J. A. de Carlo det.   * 1 f ( MNRJ 111 View Materials ): same, [without date], ( V. Souza), J. C. M. Carvalho det.   1921. * 1 m ( MNRJ 113 View Materials ): same, [without date], ( V. Souza), J. A. de Carlo det., paratype   . Pará — * 1 m / 2 f ( AMNH): Jacareacanga , VI.1970, (M. Alvarenga), J. R. I. Ribeiro det.   1999. Rio de Janeiro — * 4 m / 4 f (DZRJ-a 469): Macaé, Imboassica Lake , 04–05.VIII.1998, (J. R. I. Ribeiro, N. Ferreira-Jr., and A. M. Sanseverino), J. R. I. Ribeiro det.   1998. 1 m (DZRJ-a 470): same, Cabiúnas Lake , 18.VII.1998, (A. M. Sanseverino), J. R. I. Ribeiro det.   1998. Roraima — * 1 m ( AMNH): Boa Vista , 18.IX.1966, (M. Alvarenga), J. R. I. Ribeiro det.   1999. São Paulo — 1 m ( MACN 50456 View Materials ): Rio Claro , II.1943, (Pader P. [?]), J. A. de Carlo det.   * 1 f ( MACN 39548 View Materials ): São Paulo [?], [without date and collector], J. A. de Carlo det., paratype   . * 1 f ( MACN): Córrego Laguinha-BR 2121 [?], 03. V.1962, (Ichubart [?]), J. A. de Carlo det.   1 f ( MZSP): Itu, Pau d’Alho farm, 22.XI.1969, ([?] Martins), J. R. I. Ribeiro det.   1999.

Distribution.— BRAZIL: Espírito Santo ( Ribeiro 2005), Goiás ( Menke & Lauck 1962), Mato Grosso ( Lauck 1964), Minas Gerais ( Nieser & Melo 1997), Pará ( Ribeiro 2000), Rio de Janeiro ( De Carlo 1938), Roraima ( Ribeiro 2000), São Paulo ( De Carlo 1938), Tocantins ( Lauck 1964) [as Goiás-Ilha do Bananal]. COLOMBIA: 74 km E of Villavicencio ( Roback & Nieser 1974). SURINAM: Brokopondo ( Nieser 1975), Kabelstation ( De Carlo 1960), Marowijne ( Nieser 1975).

Description.—Measurements (m / f). Total length (from apex of head to apex of hemelytra at rest) 21.3– 25.6 / 22.4–27.5; largest width of body 11.0–13.0 / 11.0–14.3; median length of pronotum 2.90–3.70 / 3.20– 4.00; greatest pronotal width 6.40–8.05 / 7.00–8.88.

General coloration yellowish brown. Pronotum usually with two longitudinal and parallel yellowish brown stripes.

Body flattened and elliptical, extremities strongly acute. Length of anteoculus 0.87–1.03 times length of interoculus; length of rostral segment I 1.00–1.41 times length of segment II; anterior frontogenal suture equal to longer than posterior frontogenal suture; clypeus reaching ocular line or not (0–0.15 mm); vertex without longitudinal median carina; posterior interocular width 1.30–1.50 times length of anteoculus, and 1.34–1.50 times width of eye; eyes triangular. Pronotum without longitudinal median carina, or posterior part of pronotum with longitudinal median carina; greatest pronotal width 2.12 –2.24 times its length; scutellum not reaching nodal line (0.24–0.80 mm), with weakly longitudinal median carina; prosternal keel anteriorly curved, acute apically ( Fig. 5A View FIGURE 5 ). Pilosity extending along genital operculum, covering entire margin of connexivum, and part of sternites.

Male genitalia ( Fig. 5C–E View FIGURE 5 ).—Dorsal arms converged and rounded at apex, not narrowing gradually apically in dorsal view; ventral diverticulum without dorsal caudal protuberance in dorsal and lateral views, and with poorly developed ventroapical protuberance in lateral and ventral views; caudal lateral margins of ventral diverticulum convex, not sinuous in ventral view; width of ventral diverticulum about 1.2 times its length in ventral view.

Variation.—There is variability in prosternal keel, total length of body, pilosity, and phallus shape in this species. Forms with a more rounded and weakly anteriorly projected prosternal keel are found in the State of Rio de Janeiro ( Fig. 5B View FIGURE 5 ), whereas shorter specimens tend to be found in the states of Espírito Santo, São Paulo, and Rio de Janeiro. A specimen collected in the State of São Paulo lacked the pilosity extending along the genital operculum. Specimens collected in the states of Rio de Janeiro and Roraima had some phallic variation, dorsal arms being narrower and anterior portion of phallus slightly broader. In addition, in these specimens the ventral diverticulum was about 1.25 times wide as long in ventral view ( Fig. 5F–H View FIGURE 5 ).

Comparative notes.—The considerable variation in total length of body and phallus shape in this species indicates that there is clinal variation in these characters: the specimens from northern Brazil show either incremental or continuous change with latitude. Specimens from northern Brazil are shorter than those from southern Brazil. In two species of the B. bergi   group pilosity completely covers the connexiva: B. costalimai   and B. truxali   . In addition, Nieser (1975) argued that one specimen of B. truxali   from Langatabbetje, Surinam, falls within the northern extreme of B. costalimai   ’s range. According to De Carlo (1960), B. truxali   can be distinguished from B. costalimai   by the pilosity not covering the sternites. Yet B. truxali   was described based on only one female holotype from Kabelstation, Surinam. Finally, Nieser observed that it does not differ structur- ally, including pilosity, from a male specimen of B. costalimai   from the State of São Paulo identified by Lauck. Judging from its description, B. truxali   is clearly the same species as B. costalimai   . I could not borrow types, but I here synonymize B. truxali   with B. costalimai   .


Departamento de Geologia, Universidad de Chile


Royal British Columbia Museum - Herbarium


American Museum of Natural History


Mykotektet, National Veterinary Institute


Museo Argentino de Ciencias Naturales Bernardino Rivadavia


Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo














Belostoma costalimai De Carlo, 1938

Ribeiro, Josė Ricardo Inacio 2007

Belostoma truxali

De Carlo, J. A. 1960: 47

Belostoma costalimai

De Carlo, J. A. 1938: 234