Grandateralphus Souza, Monné & Marinoni, 2017

Souza, Diego de S., Monné, Marcela L. & Marinoni, Luciane, 2017, Phylogeny of the Neotropical longhorn beetle genus Ateralphus (Coleoptera: Cerambycidae: Lamiinae), Zoologia (e 11996) 34, pp. 1-11 : 9-10

Grandateralphus Souza, Monné & Marinoni , gen. n.

http://zoobank.org/ 82FD03E6-1193-42F5-9A66-D65495D2E0D1

Type-species. Alphus variegatus Mendes, 1938 .

Description. Frons rectangular; slightly convex, almost flat in lateral view; with a row of long setae near malar area; longitudinal suture well-defined, reaching occiput. Head finely punctate; slightly depressed, with coarse and sparse punctation on vertex; antennal tubercles slightly prominent, obliquely directed. Eyes coarsely faceted. Upper ocular lobes semicircular, bordered at vertex by one row of straight setae; separated by three or more times their width. Lower ocular lobes narrow and rectangular, height less than height of gena. Genae parallel.Labrum covered with dense and short setae; with a transversal row of long setae at median region. Mandibles triangular, symmetrical, apex acuminate; outer margin densely covered with short setae. Scape gradually expanded toward apex, reaching widest diameter near apex; slightly shorter than antennomere III. Pedicel short, gradually expanded toward apex. Antennomeres III–XI with a ring of dark brown setae at apical margin; gradually decreasing in length. Prothorax transverse; coarse and irregularly punctate; covered with short setae; sides with a pointed lateral tubercle. Pronotum straight near anterior margin; disc with a pair of median tubercles and, posterior to these, a small tubercle at midline. Pro-, meso- and metasternum dense and finely punctate. Prosternal process width about 2–3 times narrower than diameter of one procoxa; longitudinally depressed; posterior margin truncate. Mesosternal process straight or tumescent at posterior half; subequal in length to mesocoxa; lateral margins without tubercles; posterior margin bilobed. Elytra completely covered with setae; with coarse punctation irregularly distributed, denser at basal and lateral areas; slightly convex apically; almost straight at basal third; basal-crests raised, with rounded tubercles slightly elevated; from basal-crests, a sinuous carina extending toward apex; with a diagonal carina from humerus to basal-crest carinae. Humeri rounded, slightly projected anteriorly; with small tubercles. Pro- and mesocoxae globular. Femora and tibiae subequal in length. Femora pedunculate. Tibiae gradually enlarged apically; with a spot of dark brown setae at subapical region. Tarsomeres V bicolored, with dark brown setae on apical third or on base and apical third. Abdomen fine and irregularly punctate. Sternite I as long as sternites II, III and IV together; anterior margin long and acuminate; length about two thirds its total length. Sternites II, III and IV subequal in length. Sternite V wider than long; length about equal or less than length of sternites III and IV together; sternite V of females with a median longitudinal sulcus at basal fourth.

Remarks. Grandateralphus gen. n. is closely related to Ateralphus . Their sister-group relationship is supported by the following synapomorphies: antennomere III subequal to antennomere IV; pronotum straight near anterior margin; and sternite V with longitudinal sulcus at basal region the female abdomen. Grandateralphus gen. n. is supported by the following synapomorphies: width of upper ocular lobes less than width between the lobe and the coronal suture (6: 0), genae parallel in frontal view (8: 1) and scape gradually expanded toward apex, reaching widest diameter just near apex (9: 2). In addition to these synapomorphies, Grandateralphus gen. n. can be differentiated from Ateralphus by the lower ocular lobes rectangular, lesser in height than gena; meso- and metatibiae with a subapical stain of dark brown setae; and sternite V equal or less in length than sternites III and IV together.

Etymology. Grandateralphus gen. n. is a combination of the Latin word grand (= large) with Ateralphus . It is allusive to the size of the representatives of the new genus, which are usually larger in total length than the representatives of Ateralphus .

Grandateralphus gen. n. includes the following species (new combinations proposed in this study):

Grandateralphus lacteus (Galileo & Martins, 2006) , comb. n.

Grandateralphus tumidus (Souza & Monné, 2013) , comb. n.

Grandateralphus variegatus (Mendes, 1938) , comb. n.

Taxonomic notes

Taxonomic notes are provided from examination of material belonging to the American Coleoptera Museum, Texas, United States of America (ACMT). Souza and Monné (2013b) registered G. variegatus comb. n. (cited as A. variegatus ) from Bolivia (Santa Cruz) based on primary records in the literature ( Wappes et al. 2006). Recently, we had the opportunity to examine some material from the ACMT and, based on our observations, we exclude the record of G. variegatus comb. n. from Bolivia, considering that these records actually correspond to G. lacteus comb. n. Also, based on that material, we confirm the literature records of A. subsellatus cited by Souza and Monné (2013b) and provide a new country record of E. cicatricornis to Bolivia (Santa Cruz).

Material examined. Grandateralphus lacteus comb. n. (Galileo & Martins, 2006). Bolivia, Santa Cruz, 4–6 km SSE Buena Vista, F & F Hotel, 1 male, 22–31.x.2002, Wappes and Morris leg.; 1 female, 29–30.x.2003, Robin Clarke leg.; 1 female, 10–15. xi.2003, Robin Clarke leg.; 1 male, 21–24.xi.2003, Wappes, Morris and Nearns leg.; 1 female, 30.ix.2004, Robin Clarke leg.; 1 male, 3–8.x.2004, Wappes and Morris leg.; Reserva Natural Potrrillo del Guenda, Snake Farm, 17°40’26”S, 63°27’43”W, 400 m, 2 males, 2 females, 6–9.x.2006, Wappes, Nearns and Eya leg.; Potrerillo del Guenda, 370 m, 1 female, 16–22.x.2006, Nearns and Eya leg.; Potrerillo del Guenda , Reserva Natural, 40 km Santa Cruz, 17°40’S, 63°27’W, 370 m, 1 male, 16–21.x.2007, F. and J. Romero leg.; Potrerillo del Guenda , Snake Farm, 17°40’S, 63°27’W, 350–400 m, 1 male, 15–22.xi.2011, Bettela, Bonaso and Romero leg.; Potrerillo del Guenda , 17°40’S, 63°27’W, 350–400 m, 1 female, 1.xii.2011, Bettela, Bonaso and Romero leg.; Potrerillo del Guenda , Snake Farm, 17°40’S, 63°27’W, 350–400m, 1 female, 10–18.xii.2011, Bettella, Bonaso and Romero leg.; Potr. Del Guenda , Reserva Natural, Snake Farm, 17°40’15”S, 63°27’26”W, 400 m, 1 male, 1 female, 23–30.x.2013, Wappes and Kuckartz leg.; Potr. Del Guenda , 1 male, 23–30.x.2013, Wappes and Kuckartz leg.; Huaico, Potrerillo, across Guenda fm Potrerillo, 17°40’35”S, 63°26’59”W, 1,270 ft., 1 female, 18.xi.2012, Windsor and Gowin leg.; Huaico, Potrerillo, 17°40’S, 63°26’W, 430m, MV / UV lights, 4 males, 2 females, 27–29.x.2013, Wappes and Kuckartz leg. ( ACMT). Ateralphus subsellatus ( White, 1855) . Bolivia, Santa Cruz, Potrerillo del Guenda , Reserva Natural, Snake Farm, 17°40’15”S, 63°27’26”W, 400 m, 1 male, 24–30.x.2012, Betella, Bonaso and Romero leg.; 20 km N Camiri, road to Eyti, 6–8 km E Hwy 9, 19°52’S, 63°29’W, 1250 m, 1 male, 5, 6, 10.xii.2012, Wappes, Bonaso and Skillman leg. ( ACMT). Exalphus cicatricornis Schmid, 2014 . Bolivia, Santa Cruz, Huaico, 17°40’S, 63°24’W, 430 m, 1 female, 21.xi.2013, Skillman and Wappes leg. ( ACMT) .