Andraegoidus cruentatus ( Dupont, 1838 )

R, Juan Pablo Botero & Monné, Marcela L., 2012, Revision of the genus Andraegoidus Aurivillius (Insecta: Coleoptera: Cerambycidae), Zootaxa 3169 (1), pp. 1-60 : 14-20

Andraegoidus cruentatus ( Dupont, 1838)

( Figs 40–65 , 227 )

Trachyderes cruentatus Dupont, 1838: 26 , pl. 200, fig. 12; White, 1853: 73; Gemminger & Harold, 1872: 2977 (cat.); Burmeister, 1879: 198; Frenzel, 1891: 332 (distr.); Aurivillius, 1912: 479 (cat.); Bruch, 1912: 205 (cat.); Gounelle, 1913: 227 (syn.); Prosen, 1947: 329 (distr.); Bosq & Ruffinelli, 1951: 20 (syn.); Buck, 1959: 595 (distr.); Zajciw & Ruffinelli, 1962: 65 (distr.); Viana, 1972: 328 (distr.).

Trachyderes cruentata ; Blackwelder, 1946: 591 (cat.)

Andraegoidus cruentatus ; Hüdepohl, 1985: 42, Figs. 24 , 25 ; Monné, 1994: 86 (cat.); Monné & Giesbert, 1995: 142 (check); Di Iorio et al., 2003: 22 (distr.); Monné, 2005: 581 (cat.); Monné & Bezark, 2010: 150 (check); Botero & Monné, 2011: 58.

Trachyderes cardinalis Dupont, 1838: 28 , pl. 204, fig. 1; White, 1853: 75; Gemminger & Harold, 1872: 2977 (cat.); Aurivillius, 1912: 479 (cat.); Bruch, 1912: 205 (cat.); Blackwelder, 1946: 591 (cat.); Prosen, 1947: 329 (distr.).

Andraegoidus humeralis Aurivillius, 1920: 370 , fig. 76; Blackwelder, 1946: 590 (cat.); Tippmann, 1953: 313, pl. 33, fig. 39.

Male. Integument generally black. Head black to brownish-orange; labrum brownish-red. Antennae bicolor, basal half brownish-orange and apical half black; pedicel black. Prothorax whole black or with disc of pronotum, tubercle of prosternal sulcus and prosternal process brownish-orange. Mesosternal process and a longitudinal band of the metasternum brownish-orange. Elytra black or with a band of brownish-orange at base, sometimes reduced to two spots, one on each side of scutellum. Basal half of femora, median region of tibiae and tarsi brown. Sternites I– V black except apical margin of sternites I–IV orange or red.

Antennal tubercle with coarse and dense punctures. Upper eye lobes well-separated, distance between them equal to three times width of upper lobe. Submentum depressed. Genae with short, decumbent, whitish hairs. Antennae exceeding elytral apices at segment X. Scape coarsely punctate, rugose, subglabrous and expanded apically; pedicel with short and dense pubescence; segment III with sparse fine punctures and with short and dense pubescence; segments IV–XII smooth and covered with inconspicuous pubescence. Segment III 1/6 longer than scape and IV, segments IV–XI subequal in length, segment XII 1/3 shorter than XI and slightly curved.

Prothorax octagonal-shaped, about 2/5 wider than long, strongly swollen and with dense and confluent sexually dimorphic punctation ( Fig. 40 ); surface with aspect alveolate, well-demarcated ( Fig. 41 ). Lateral antemedian tubercle feebly prominent and elevated, sometimes absent; postmedian tubercle feebly prominent and at right angle to axis of body; concave between tubercles. Sexually dimorphic punctation of pronotum with indentations deep and rounded ( Fig. 41 ), denser and more elongate at laterally; each indentation with a single or several distinct clusters of pores ( Fig. 42 ), distributed mainly around periphery of indentations; between indentations are scattered points that may have a small seta which is generally curved apex ( Fig. 42 ). Disc of pronotum smooth; postmedian elevations with fine, shallow and sparse punctures. Prosternum with sexually dimorphic punctation denser and more confluent, with some asymmetric indentations. Transversal sulcus shallow, with short, sparse hairs, denser and longer in lateral regions. Prosternal process smooth and elevated; at most about 1/3 as broad as procoxal cavity. Mesosternal process at most as broad as mesocoxal cavity; with discrete projection directed anteriorly; posterior margin distinctly sinuous.

Scutellum about 1/6 length of elytra, with fine and sometimes rough punctures. Elytra subparallel, about 3 times as long as prothorax; surface with dense and uniformly distributed punctures; apices truncate or slightly sinuous, unarmed and adorned with very short hairs.

Profemora with sparse short whitish hairs; meso- and metafemora, ventrally, with sparse short hairs at least in ¾ basal; metafemora with very short and dense hairs in ventral region. Meso- and metatibiae with dense hairs at least in apical ¾. Sternite I 1/3 longer than II; sternites II–IV gradually decreasing in length; sternite V with apex rounded.

Terminalia: Tergite VIII ( Fig. 47 ) with apical margin slightly sinuous and adorned with yellow hairs. Sternite VIII ( Fig. 46 ) transverse, apical margin slightly sinuous and with long hairs at sides and decreasing in length to middle region which is glabrous; apophysis short, with about half as long as sternite VIII. Ventral arc ( Fig. 48 ) with apophysis short, about 1/5 as long as arms. Dorsal arc ( Fig. 49 ) curved blade-shaped; apical margin sinuous and with some sparse hairs. Tegmen ( Figs 50–52 ) 1/4 shorter than median lobe; distal region almost divided into parameres, parameres cylindrical-elongated, slightly narrowed to apex and these rounded and with short hairs; ring piece elongated, apex connected only by narrow membrane, without apical projection. Median lobe ( Figs. 53–55 ): dorsal lobe slightly shorter than ventral lobe; both lobes with apex rounded; basal region ¼ longer than apical region. Internal sac with sclerotized piece “C” shaped.

Female. Integument brownish-orange. Apices of genae, base of mandibles and antennal tubercles brownishred; apices of mandibles, scape, pedicel, and segments III–XI, black. Anterior and posterior margin of pronotum black; side of transverse carina black. Mesepisternum and mesepimerum from black to dark red; metepisternummetepimerum black or dark brown. Elytra with a black spot in apical half, elongate and narrowed to apex ( Figs 62, 65 ). Apical third of femora, base, and apices of tibiae black. Sternites from brownish-red to black.

Genae with moderately dense pubescence, mandibles with or without long hairs. Antennae only reaching apical third of elytra. Scape and segment III with fine punctures; segment III with sparse hairs; segments IV–XI with dense and uniform pubescence. Segment XI 1.5 times longer than X. Prothorax less swollen than in males, lateral tubercles more visible; with or without fine punctures, generally concentrated on posterior elevations, transverse carina of pronotal disc more elevated than in males.

Terminalia: Tergite VIII ( Fig. 56 ) with apical margin sinuous. Posterior region of sternite VIII ( Figs 43–45 ) three times wider than long; with a row of aciculate setae, as long as conchoidal setae; conchoidal setae smooth and some of them with small slits on dorsal region; petiolate setae smooth on dorsal region. Sternal apophysis about two times as long as posterior region, apex about 1/3 longer than median region. Ovipositor ( Figs 57–58 ) with long and slightly divergent lateral lobes, margins with short, fine and sparse hairs, inner margin with distinct angle near the vulva and slightly narrowed to the apex; spermatheca “C” shaped, curved and rounded apically; spermathecal gland broader and shorter than spermatheca.

Measurements (mm). female/male. n= 9/7. Total length, 20.88±2.80/22.49±3.21; prothorax length, 4.74±0.67/5.33±0.86; greatest prothorax width, 6.41±1.06/7.14±1.12; elytral length, 13.88±2.01/14.51±2.16; humeral width, 7.13±1.11/7.44±1.27.

Type material. We examined the male lectotype ( Figs 59–60 ) and the female lectotype of the synonymized species Trachyderes cardinalis ( Figs 62–63 ), both from Córdoba, Argentina (MNHN) .

Discussion. Andraegoidus cruentatus is similar to A. homoplatus and A. laticollis in having the surface of elytra covered with dense and uniformly distributed punctures, while in the other species the surface is smooth or with sparse punctures in the basal region.

Andraegoidus cruentatus differs in having shorter antennae in males, exceeding the elytral apices at segment X, and in females the antennae do not reach the elytra apex; and males with confluent sexual punctation on the prothorax ( Fig. 40 ). In A. homoplatus and A. laticollis the males have longer antennae, exceeding elytral apex, maximum at segment VIII; in female A. homoplatus antennae exceed the elytral apex at segment VIII (the female of A. laticollis is unknown) and the sexually dimorphic punctation is not confluent.

Among the species whose terminalia was examined, A. cruentatus is the only one with a ring piece almost divided at the apex, connected only by a narrow membrane ( Figs 50–52 ).

Geographical distribution. Argentina: BA, CA, CH, CO, SL, SE ; Uruguay: CO. Viana (1972) cited to Paraguay without the exact location. We add a new country record from Brazil: RS ( Fig. 227 ).

Specimens examined. BRAZIL, Rio Grande do Sul: Alegrete , female, II.1933, Buch leg. ( MZSP) . ARGEN- TINA, Buenos Aires: La Plata, female, ( USNM) ; Sierra de la Ventana , male, III.1972, Mesa A. leg. ( MNRJ) ; Catamarca: Villa Cubas , female, XII.1948 ( MNRJ) ; Chaco : “Las Sirenas”, female, III.1941 ( MNRJ) ; Córdoba : male (lectotype); female, 19.XI.1939. ( MNRJ) ; Dep. de Calamuchita (“ El Sauce ”), male, XII.1938, Viana M.J. leg. ( MNRJ) ; Sierra de Córdoba , male, I.1980, Williner S.J. leg. ( MNRJ) ; Jesus Maria (La Dormida), female, II.1941, Martines A. leg. ( MNRJ) ; San Luis: Desaguadero , male, I.2001 ( MCNZ) ; Santiago del Estero: Rio Salado , 2 females and 2 males, Wagner leg. ( MNRJ) ; female and male, Tippmann leg. (USNM). URUGUAY, Colonia: Nueva Palmira, female ( MNRJ) .

Figures

FIGURE 227. Map of geographical distribution of Andraegoidus cruentatus, Andraegoidus distinguendus, Andraegoidus lacordairei, Andraegoidus translucidus, Andraegoidus variegatus.

FIGURES 40–45. Andraegoidus cruentatus. 40–42, pronotum, male: 40, general view; 41–42, detail of microsculptured surface and of indentations of the sexual punctation; 43–45, sternite VIII, female: 43, general view; 44, detail of brush of setae; 45, detail of conchoidal and petiolate setae.

FIGURES 46–55. Andraegoidus cruentatus male. 46, sternite VIII; 47, tergite VIII; 48, ventral arc; 49, dorsal arc; 50–52, tegmen: 50, dorsal view, 51, lateral view, 52, ventral view; 53–55, median lobe: 53, dorsal view, 54, lateral view, 55, ventral view.

FIGURES 56–58. Andraegoidus cruentatus female. 56, tergite VIII; 57–58, ovipositor: 57, dorsal view, 58, ventral view.

FIGURES 59–67. 59–60, Andraegoidus cruentatus, lectotype, male; 61, Andraegoidus cruentatus, male; 62–63, Andraegoidus cruentatus, female (lectotype of Trachyderes cardinalis); 64–65, Andraegoidus cruentatus, female; 66–67, Andraegoidus laticollis, holotype, male.

FIGURES 16–24. Drychateres bilineatus male. 16, tergite VIII; 17, ventral arc; 18, dorsal arc; 19–21, tegmen: 19, dorsal view, 20, lateral view, 21, ventral view; 22–24, median lobe: 22, dorsal view, 23, lateral view, 24, ventral view.

FIGURES 25–27. Drychateres bilineatus female. 25, tergite VIII; 26–27, ovipositor: 26, dorsal view, 27, ventral view.