Bactrodes biannulatus Stål, 1862

Coscarón, Maria Del Carmen & Melo, Maria Cecilia, 2003, Revision of the subfamily Bactrodinae (Heteroptera, Reduviidae), with a phylogenetic analysis of Bactrodes, Zootaxa 304, pp. 1-15 : 9-11

Bactrodes biannulatus Stål, 1862

Figs. 3 : A–L, 4: C.

Bactrodes biannulatus Stål 1860 , 2: 80.

Bactrodes biannulatus: Mc Atee & Malloch 1923 , 16: 247.

Material examined: Typus: BRAZIL ( NRS); allotypus: Brazil, Rio de Janeiro ( NRS); paratypus: Brazil ( NRS). ARGENTINA: 2Ψ, 1ɗ, Misiones, Dep. San Javier, Puerto Londero (27°23’S 41°7’W), IX­ 1947. M.J. Vianna col. ( MACN); 2Ψ, det. Wygodzinsky, Inst. Med. Reg. ( MACN); BRAZIL: Ψ, Rio de Janeiro, Morro San Silvestre, 28­VII­28, Wygodzinsky det., Denier's coll. ( MLP); Ψ, Brasilia D.F. (15°47’S 47°54’W), VI­1960 ­86/ 60, Carcavalho det. 1990. Exp. Formosa col. ( QBOM); MEXICO: ɗ, Oaxaca, just W of Chiapas border 19 km W of Rizo de Oro ridge S. Cerro Baul (17°5’N 96°44’W), alt. 1615m, 28­IV­1972, Breedlove col. ( CAS); PANAMA: ɗ, Portobello (9°33’N 79°39’W), II­1911, det. Mc Atee & Malloch ( USNM); 1ɗ, A. Busck col. ( USNM); 6ɗ, 1Ψ, Cocle Prov., El Valle, 700m. 16­V­1973. P.D. Ashlock col. (at light) ( UK); ɗ, ( MLP).

Description.­ Body length 7.66–9.37 (mean = 8.20). Head smooth, light brown, with scarse light brown setae ( Fig. 3 ­A). Length 1.07–1.37 (mean = 1.25), width 0.67–0.73 (mean = 0.70). Antennal tubercle with granule at base. Antennal length 7.59–9.45 (mean = 8), ratio of antennal segments' lengths ca. 1: 0.70: 0.24: 0.17. Antennal segment I light brown except basally and distally brown, segment II–IV brown, with setae. Width of eyes 0.15–0.20 (mean = 0.18), interocular space 0.30–0.35 (mean = 0.33). Genae protruded light yellow. Gula brown. Rostrum length 1.33–1.37 (mean = 1.35), ratio of rostrum segments' lengths ca. 1: 1.42: 0.92. Rostrum segments I and II light brown, darker distally, with scarse short setae; segment III brown with abundant setae dorsally. Neck with small setose tubercles. Pronotum length 1.70–2.40 (mean = 1.93), width 1.07–1.17 (mean = 1.09). Anterior lobe light brown with setiferous short tubercles. Median sulcus evident only distally. Posterior lobe brown granulated, posterior edge not invaginated ( Fig. 3 ­B). Sterna glabrous. Scutellum smooth ( Fig. 3 ­C). Fore legs light brown, femora light brown except two brown rings medially and apically, tibia light brown except a basal and dorsal brown spot with sparse thin setae, tarsi light brown, except segment III brown ( Fig. 3 ­D). Median and hind legs light brown, femora slightly incrassate apically, tibia with abundant thin setae, tarsi brown. Propleura setose. Stridulatory sulcus light brown and setose ( Fig. 3 ­E). Hemelytra length 4.24–5.63 (mean = 4.67), brown. Abdominal length 4.36–5.44 (mean = 4.70), width 1.00–1.23 (mean = 1.10). Abdomen visible from above. Connexivum light brown. Urotergites light brown and glabrous.

Male: pygophore glabrous and smooth, two acute projections distally ( Fig. 3 ­F). Parameres elongate, apically curved, long internal setae present ( Fig. 3 ­G). Base of pygophore median process thin, setose, apical hook acute ( Fig. 3 ­H). Phallus ( Fig. 3 ­I), articulatory apparatus ( Fig. 3 ­J).

Scale line: 1mm, Figs. A­E, M­Q; scale line: 2mm, Figs. F­L, R­W.

Female: gonocoxite VIII subtriangular, sparse setae distally ( Fig. 3 ­K), laterally expanded, relation between maximal width of gonocoxite and maximal width of gonapophysis 2.8: 1. Gonocoxite IX subquadrangular, distal long setae present ( Fig. 3 ­L).

Distribution ( Fig. 4 ­C): ARGENTINA, BRAZIL, MEXICO, and PANAMA.

Observations: First record for Argentina, and new locality records for Brazil, Mexico, and Panama. The closest species are B. femoratus and B. misionensis n. sp., but B. biannulatus differs in the shape of the posterior lobe of the pronotum.

Figures

FIGURE 3. A­ L. Bactrodes biannulatus: A. Head, lateral view; B. Posterior lobe of pronotum; C. Scutellum, lateral view; D. Fore leg; E. Stridulatory sulcus; F­ J. Male genitalia: F. Pygophore, lateral view; G. Paramere; H. Median process of pygophore; I. Phallus; J. Articulatory apparatus; K­ L. Female genitalia: K. Gonocoxite and gonapophysis VIII; L. Gonocoxite IX; M­ V. Bactrodes misionensis, n. sp.: M. Head, lateral view; N. Scutellum, lateral view; O­P. Fore leg; Q. Stridulatory sulcus; R­U. Male genitalia: R. Pygophore, lateral view; S. Paramere; T. Median process of pygophore; U. Phallus; V­W. Female genitalia: V. Gonocoxite and gonapophysis VIII; W. Gonocoxite IX.

FIGURE 4. Geographic distribution: A­ Bactrodes spinulosus. B­ Bactrodes femoratus. C­ Bactrodes biannulatus. D­ Bactrodes misionensis.