Ateralphus senilis Bates 1862
Creators: name: Souza, Diego De S.
name: Monné, Marcela L.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Ateralphus
Ateralphus senilis

description: Ateralphus senilis (Bates, 1862)
(Figs. 98–99; 110; 122–127; 130)
Alphus senilis Bates, 1862: 123; Gemminger & Harold, 1873: 3142 9 (cat.); Aurivillius, 1923: 379 (cat.); Blackwelder, 1946: 609 (cat.); Lima, 1955: 131 (fig.); Buck, 1959: 603 (dist.); Alphus senilis Tippman, 1960:164 (tax.); Gilmor, 1965: 607 (cat.); Zajciw, 1967: 10 (dist.); Silva et al., 1968: 398 (biol.); Viana, 1972: 369 (dist.); Zajciw, 1972: 66 (dist.); Lane, 1973: 397 (syn.); Zajciw, 1974: 76 (dist.); Rémillet, 1988: 133 (cat.); Martins & Monné, 1993: 138 (tax.); Monné, 1994: 39 (cat., dist.); Monné & Giesbert, 1994: 232 (check, dist.); Tavakilian et al., 1997: 307 (biol.); Canettieri & Garcia, 2000: 47 (dist.); Monné, 2001: 40 (dist., biol.).
Ateralphus senilis; Restello et al., 2001: 300; Monné, 2005: 169 (cat., dist.); Monné & Hovore, 2005: 204 (check, dist.); Morvan & Morati, 2006: 35 (dist.); Wappes et al., 2006: 32 (dist.); Wappes et al. 2007: 35 (dist.); Monné & Bezark, 2009: 219 (check, dist.); Monné & Bezark, 2010: 222 (check, dist.); Monné & Bezark, 2011: 228 (check, dist.); Monné et al., 2012: 30 (check, dist.); Souza & Silva: 2012: 239 (dist.); Bezark & Monné, 2013: 235 (check, dist.).
Alphus scutellaris Bates, 1862: 123; Gemminger & Harold, 1873: 3142 9 (cat.); Aurivillius, 1923: 379 (cat.); Soukup, 1942: 307 (dist.); Blackwelder, 1946: 609 (cat.); Tippman, 1960:164 (tax.); Gilmor, 1965: 607 (cat.).
Alphus senilis ab. uniformis Tippman, 1960:165; Gilmor, 1965: 607 (cat.).
Male. Integument dark brown to greenish-gray. Body covered with dense and short yellowish-white setae. Frons rectangular, convex in lateral view. Upper ocular lobes height almost half of the lower ocular lobe; distance between them almost maximum width of lobe. Lower ocular lobe rounded and truncate at posterior margin; height, about twice the malar area. Genae convergent.
Antennae (Fig. 98) reaching elytral apex approximately at antennomere VI. Scape with slightly depressed ring on apical fourth; covered with sparse yellowish-white setae arranged in small tufts. Pedicel with one spot of dark brown setae on apical region. Antennomeres III and IV almost completely covered with dark brown setae on outer surface, with one fringe of straight setae on inner surface; antennomeres V–XI with one ring of dark brown setae on apical region, gradually longer on distal antennomeres.
Prothorax (Fig. 110) about one third wider than long; covered with short yellowish-white setae; anterior margin almost one fifth narrower than posterior margin. Pronotum with three tubercles on disc: two median elevated, pyramidal-shaped and glabrous apex; with the third tubercle on midline, situated posterior to median tubercles, smaller and with glabrous apex; with one faint elevation posterolateral to median tubercles covered with setae. Prosternal process width almost one third the diameter of one procoxa. Mesosternal process flat at posterior half and anterior margin decline at an angle of approximately 45° relative to mesosternum. Mesepisternum, mesepimeron and metepisternum covered with yellowish-white setae.
Scutellum (Fig. 110) wider than long, subtriangular and apical margin truncate; with one slight longitudinal depression on median region; finely punctate and covered with dense dark brown setae, such as circumscutellar region.
Elytra integument dark brown to greenish-gray; length about 3.2 times longer than prothorax; covered with rather dense and short yellowish-white to greenish-gray setae interspersed by patches of white setae slightly pronounced; longitudinal carinae slightly pronounced, in their place, small tufts of aligned dark brown setae. Basalcrest elevated, adorned by small tubercles; from crests, one “V”-shaped stain of dark brown setae; region between basal-crests with evident punctation and covered with light brown setae which covers scutellum, forming a cordate circumscutellar macula. Epipleura with slight longitudinal stripe of dark brown setae near margin. Apical margin of elytra truncate.
Legs covered with yellowish-white setae. Meso- and metafemora glabrous on inner surface and with slight circular spot of dark brown setae at median region on anterior surface. Tibiae with dense ring of dark brown setae on apical third. Tarsomere V bicolorous, base with yellowish-white setae and apex dark brown.
Abdomen entirely covered with greenish-white setae, denser laterally and on apical region of last sternite. Sternite V wider than long; length shorter than sternites II, III and IV together.
Terminalia. Median lobe (Figs. 122–123) curved in lateral view; dorsal and ventral lobes subequal in height and apex slightly acuminate; basal apophysis length about 1.4 times less than apical portion. Tegmen (Fig. 124) as long as median lobe; parameres length about a third as long as tegmen and near each other; ring pieces together at apex, with one apical projection curved and apical margin rounded.
Female. Antennae (Fig. 99) reaching elytral apex approximately at antennomeres VII–VIII.
Elytra length about 3.6 times longer than prothorax.
Sternite V length equal to or longer than sternites II, III and IV together.
Terminalia (Figs. 125–127). Sternite VIII (Fig. 125) subcylindrical, with apical region slightly narrower than basal region; sternal apodeme length about three longer than sternite VIII. Tergal apodemes concave and narrowing towards basal region. Coxites (Fig. 127) narrow, curved and elongate; basal region slightly wider than apical region. Spermathecal duct long. Spermatheca curved near base, with elongate and rounded apex. Spermathecal gland long, length about six times than spermatheca.
Variability. Several specimens have the postmedian region of pronotum covered with golden brown setae, such as circumscutellar area. The dark brown stain on epipleura and the circular spot on meso- and metafemora may vary with respect to density or be absent.
Measurements (mm), male/female. Total length, 10.7–12.5/10.5–14.0; prothorax length, 2.2–2.7/2.1–2.8; prothorax maximum width, 3.5–4.3/3.4–5.2; elytral length, 7.7–8.8/7.7–10.3; humeral width, 4.3–5.3/4.2–5.8.
Type-material. Holotype, Alphus senilis, female, Óbidos, Pará, Brazil (MNHN) (examined by photograph); Alphus scutellaris Bates, synonym, holotype, male, Caripí, Pará, Brazil (MNHN) (not examined); Alphus senilis ab. uniformis Tippmann, synonym, holotype, male, Chapare, Cochabamba, Bolivia (USNM) (examined by photograph).
Discussion. This species is similar to A. dejeani in shape and color of circumscutellar region. Additionally to characteristics in the key, A. senilis may be differentiated by small tufts of dark brown setae on longitudinal carina of elytra, the carinae are slightly raised to inconspicuous and elytra uniformly covered by setae, without pronounced patches of white setae as in A. dejeani.
Geographical distribution. Guyana (Upper Demerara-Berbice Region), French Guiana (Cayenne), Brazil (Pará, Maranhão (Zajciw, 1967), Rondônia and Mato Grosso), Peru (no specific locality (Monné, 2012)) and Bolivia (Cochabamba and Santa Cruz (Wappes et al., 2006)). New records are added from Brazil (Amapá and Amazonas) (Fig. 130).
Biology. According to Tavakilian et al. (1997) and Monné (2001), the larva develops in Annona ambotay Aubl. and Annona muricata L. (Annonaceae).
Material examined. GUYANA, Malali, “on the Demerara River”, 1 female (MNRJ); FRENCH GUIANA, Montjoly, 1 male, VII.1980, “à la lumière”, M. Remillet leg. (MNRJ); Rémire (Ferme Vidal), 1 female, 6.VII.1984, “La nuit”; 1 male, 8.VII.1984, “La nuit, sur tronc.”; 1 female, 13.XI.1984, “ex larva”, G. Tavakilian leg. (MNRJ). BRAZIL, Amapá: Macapá, S.J. Pacuí, 1 male, 7.II.1979, coleta noturna (MNRJ); Amazonas: Estirão do Equador (rio Javari), 1 female, XII.1958, Vitor T. Sampaio leg. (MNRJ); Manaus, 1 male, 20.II.1937, Elias & Roppa leg. (DZUP); Pará: Itaituba, 1 female (MNRJ); Itaituba (rio Tapajós), 1 female, III.1964, Dirings leg. (MZSP); Óbidos, 1 male, X.1953; 1 female, XI.1956; 1 female, IX–X.1957; 1 male, VI.1959, F.M. Oliveira leg. (MNRJ); Rondônia: Porto Velho (Parque Natural Municipal), 08°41’02,57”S, 63°51’59,47”W, 1 male, 07.X.2008, Armadilha Luminosa, UFRO-E 0 0 57 (UNIR); Mato Grosso: Sinop, 12º31’S, 55º37’W (BR 163) Km 500 a 600, 1 male, 1 female, X.1974, Alvarenga & Roppa leg. (MNRJ).
description: Published as part of Souza, Diego De S. & Monné, Marcela L., 2013, Revision of the genus Ateralphus Restello, Iannuzzi & Marinoni, 2001 (Coleoptera: Cerambycidae: Lamiinae), pp. 301-337 in Zootaxa 3736 (4) on pages 331-334, DOI: 10.11646/zootaxa.3736.4.1, http://zenodo.org/record/248455