Ateralphus tumidus, Souza, Diego De S. & Monné, Marcela L., 2013

Souza, Diego De S. & Monné, Marcela L., 2013, Revision of the genus Ateralphus Restello, Iannuzzi & Marinoni, 2001 (Coleoptera: Cerambycidae: Lamiinae), Zootaxa 3736 (4), pp. 301-337 : 311

Ateralphus tumidus new species

( Figs. 14–19 ; 26–28; 33–34; 128)

Male. Integument dark brown. Body covered with dense and short yellowish-grey setae. Frons rectangular; slightly convex, almost flat in lateral view. Upper ocular lobes height almost half of the lower ocular lobe; distance between them about 3.5 to four times width of lobe. Lower ocular lobe rectangular; height about 1.4 times smaller than malar area. Genae parallel.

Antennae ( Fig. 34 ) reaching elytral apex approximately at antennomere VII. Scape without depressions on apical fourth. Pedicel with one spot of dark brown setae on apical region. Antennomeres III–XI with one ring of dark brown setae on apical region, gradually longer on distal antennomeres; antennomeres III and IV with row of sparse and straight setae on inner surface.

Prothorax about 1.7 times wider than long; anterior margin almost one sixth narrower than posterior margin. Pronotum with a slight longitudinal elevation, usually glabrous, only near anterior margin; depressed between median tubercles; with three tubercles on disc: two median elevated, with lunate and glabrous apex; with the third tubercle on midline, situated posterior to median tubercles, smaller and with glabrous apex. Prosternal process width almost half the diameter of one procoxa. Mesosternal process ( Figs. 26–27 ) tumescent at posterior half and anterior margin decline at an angle of approximately 45° relative to mesosternum. Mesepisternum, mesepimeron and metepisternum covered with yellowish-gray setae.

Scutellum wider than long, semicircular and truncate apex; one slight median longitudinal glabrous depression, at least on basal third; finely punctate, covered with yellowish-gray setae.

Elytra length about four times longer than prothorax; covered mainly with yellowish-gray setae and irregular patches of whitish hairs on dorsum; with elevated carinae distinctly pronounced. Basal-crest elevated, adorned by inordinate and rounded tubercles; from crests, one “V”-shaped stain of dark brown setae; region between basalcrests with setae colored as the elytron. Epipleura setae coloration similar to dorsum. Apical margin of elytra truncate.

Legs entirely covered with yellowish-gray setae. Tibiae with one spot of dark brown setae on subapical region. Tarsomere V bicolorous, base and apex with dark brown setae.

Abdomen covered with yellowish-gray setae, denser laterally and on apical region; with glabrous maculae on lateral edges of sternites II–IV. Sternite V wider than long; length about equal or less than length of sternite III and IV together.

Terminalia. Median lobe ( Figs. 14–15 ) curved in lateral view; dorsal and ventral lobes subequal in length, with rounded apex; basal apophysis length subequal to apical portion. Tegmen ( Fig. 16 ) length slightly longer than median lobe; parameres length about a third as long as tegmen and near each other; ring piece elongate and together at apex, with one apical projection curved and apical margin truncate.

Female. Antennae ( Fig. 33 ) reaching elytral apex approximately at antennomeres VIII–IX.

Terminalia ( Figs. 17–19 ). Sternite VIII ( Fig. 17 ) rounded, parallel near apex; sternal apodeme length about 2.7 times longer than sternite VIII. Tergal apodemes concave and narrowing towards basal region. Coxites ( Fig. 19 ) parallel and robust; with fine punctation and sparse and straight setae on apical third; near each other on two basal thirds and parallel on apical third; basal region approximately two times wider than apex. Bursa copulatrix elongated and oval aspect, about seven times the spermatheca length. Spermathecal duct long. Spermatheca base elongate, gradually wider towards apical region and apex rounded. Spermathecal gland long, length about three times longer than spermatheca.

Variability. In several specimens, there is no stain of dark brown setae on apical region of pedicel. The length of male antennae may overcome antenomere VII, but do not reach the end of antenomere VIII.

Measurements (mm), male/female. Total length, 13.0–18.2/15.8–20.3; prothorax length, 2.4–3.2/3.0–3.7; prothorax maximum width, 4.2–5.5/5.2–6.5; elytral length, 9.8–13.8/11.8–15.2; humeral width, 5.3–7.3/6.5–8.2.

Etymology. Latin, tumidus means swollen, is allusive to tumescent shape of the mesosternal process.

Type-material. Holotype, female, Curitiba , Paraná, Brazil, 23.I.1965, C. Valle leg. (MNRJ) ( Fig. 33 ). Paratypes (26): BRAZIL, São Paulo: São Paulo, 1 male, E. Gounelle leg. (MZSP); Campinas, 1 male, III.1941 (MNRJ); Rio Claro, 1 female (MNRJ); Paraná: Arapoti, 1 female, XI.1942, Anton Maller leg. (MNRJ); Curitiba , 1 male, 1 female, 22.XII.1937 (MNRJ); 1 female, 8.I.1938, Claretiano leg. (MZSP); 1 female, II.1939 (MZSP); 1 male, 1 female, I.1940, Claretiano leg. (MNRJ); 1 male, II.1940 (MZSP); 1 female, 16.XII.1970, A. M. Sakakibara leg. (DZUP); 1 male, 3.X.1972, M. L. Petzl leg. (DZUP); 2 males, 23.I.1965, C. Valle leg. (MZSP); 1 male (MNRJ); Foz do Iguaçu, 1 female, 7.XII.1966, NOITE-Lamp. Merc., D. Zoo. U. F. P. leg. (DZUP); Rolândia, 1 female, X.1954, Dirings leg. (MZSP); 1 female, IX.1960, Dirings leg. (MZSP); Santa Catarina: Corupá, 1 female, II.1943, A. Maller leg. (DZUP); 1 female, XII.1955, A. Maller leg. (MNRJ); 1 female, I.1966, S. A. F. leg. (MNRJ); 1 female, XII.1970, A. Maller leg. (DZUP); 1 female, A. Maller leg. [Lo 918, S. Catarina, Hansa] (MNRJ); Timbó, 1 male, XII.1953, Dirings leg. (MZSP). ARGENTINA, Misiones: Iguazu, 1 male, II.1976 (MZSP).

Figures

FIGURES 14 – 19. Ateralphus tumidus new species. Male: 14 – 15, median lobe, dorsal and lateral view; 16, tegmen. Female: 17, sternite VIII; 18, female terminalia; 19, coxites. Scales = 1 mm. Figures 14 – 15, 17 – 18, respectively, same scale.

FIGURES 29 – 34. 29 – 30, Ateralphus lacteus Galileo & Martins, 2006: 29, male; 30, female. 31 – 32. Ateralphus variegatus (Mendes, 1938): 31, male; 32, female. 33 – 34, Ateralphus tumidus new species: 33, holotype, female; 34, paratype, male. Scales = 2 mm.

FIGURES 20 – 28. 20 – 21, Ateralphus lacteus Galileo & Martins, 2006: 20, male, elytral apex; 21, female, abdomen, ventral view. 22 – 25, Ateralphus variegatus (Mendes, 1938): 22, frons; 23, basal-crests and punctation on prothorax and elytra; 24, female, abdomen, ventral view; 25, protibia. 26 – 28, Ateralphus tumidus new species: 26 – 27, mesosternal process, ventral and lateral view; 28, tarsômero V. Scales = 1 mm.