Aegomorphus cunninghami, Heffern & Santos-Silva & Botero, 2022

Heffern, Daniel, Santos-Silva, Antonio & Botero, Juan Pablo, 2022, Two new species and taxonomical and geographical notes on Aegomorphus Haldeman (Coleoptera, Cerambycidae, Lamiinae), Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 62, pp. 1-12 : 4-7

Aegomorphus cunninghami sp. nov. ( Fig. 3 A-3E)

Description: Holotype male: Integument mostly dark brown, almost black; ventral mouthparts mostly reddish brown, with dark brown and yellowish-brown areas, and apex of maxillary palpomeres I-III and labial palpomeres I-II pale yellow or reddish, and apex of maxillary palpomere IV and labial palpomere III reddish brown. Meso- and metatibiae with dark reddish brown ring about middle and posterior fifth. Inferior region of sides of ventrites 2-4 and posterior half of 5 reddish brown; apex of ventrite 3 brown; apex of ventrite 4 dark reddish brown.

Head: Frons moderately coarsely, sparsely punctate throughout; central area close to clypeus with large, dense orangish-brown pubescent macula; with two small white pubescent macula superiorly on each side of median groove; central area with transverse, wide dark orangish-brown pubescent band not obscuring integument, sides of area close to clypeus and superior area with orangish-brown pubescence not obscuring integument, except narrow straw-colored pubescent band close to eyes; with a few long, erect brownish setae close to eyes. Area between antennal tubercles and anterior region between upper eye lobes with moderately coarse punctures,semielliptically aligned; sides of area between antennal tubercles with dense yellowish-brown pubescent band, becoming convergent toward anterior region between upper eye lobes; central area between antennal tubercles with abundant brownish pubescence not obscuring integument, except glabrous posterior area. Remaining surface of vertex and area behind upper eye lobes finely, abundantly punctate, except smooth area of median groove; with abundant dark brown pubescence partially obscuring integument, except glabrous area of median groove (this region widened toward prothoracic margin), and dense, reniform yellowish-brown pubescent macula behind upper eye lobes, and straw-colored pubescent band close to inferior region of upper eye lobes. Area behind lower eye lobes tumid, almost smooth close to eye, finely, abundantly punctate on remaining surface (punctures becoming transverse toward inferior area); tumid area with abundant straw-colored pubescence (this area widened toward inferior region), glabrous on remaining surface. Genae mostly minutely rugose-punctate; with dense orangish-brown pubescence close to eye, sparser, grayish-white on remaining surface, except glabrous area close to clypeus; with a few long, erect brownish setae close to eye. Widest central area of postclypeus with abundant, bristly orangish-brown pubescence, and long, erect, abundant setae of same color interspersed, especially on sides. Sides of postclypeus glabrous. Labrum coplanar with anteclypeus at posterior 3/4, inclined at anterior third; with grayish-white pubescence not obscuring integument on coplanar area, and long dark setae close to inclined area; inclined area with fringe of golden setae on anteri- or margin. Distance between upper eye lobes 0.25 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.56 times distance between outer margins of eyes. Antennae, at least, 1.7 times elytral length (missing most of antennomere XI of left antenna, and antennomeres X-XI of right antenna), reaching elytral apex at basal third of antennomere VIII. Scape piriform, longitudinally depressed on center of basal third of dorsal surface; with orangish-brown pubescence on dorsal surface of basal third, dark orangish-brown pubescence on remaining surface of dorsal and lateral surfaces, except yellowish-white pubescence on central area and apex; remaining surface with abundant grayish-white pubescence not obscuring integument. Pedicel with pale yellow pubescence on basal half of dorsal surface, brown pubescence on posterior half of dorsal surface and sides, and abundant whitish pubescence on remaining surface. Antennomeres III-IV with whitish pubescence basally and centrally on dorsal and lateral surfaces, dark yellowish-brown, less conspicuous on remaining surface of dorsal and lateral surfaces, except narrow yellowish pubescent band apically; ventral surface with dense grayish-white pubescence on anteri- or ⅔, dark yellowish-brown, less conspicuous on posterior third; antennomeres V-VI with dense grayish-white pubescence on basal half, except dark yellowish-brown pubescent macula on dorsal surface, and dark yellowish-brown pubescence on posterior half; antennomeres VII-X with dense grayish-white pubescence on basal half, yellowish-brown, slightly conspicuous on posterior half; pedicel and antennomeres III-VI with long, erect, sparse yellowish-brown setae ventrally (some setae brownish from IV). Antennal formula based on length of antennomere III: scape = 0.67; pedicel = 0.23; IV = 0.82; V = 0.64; VI = 0.58; VII = 0.50; VIII = 0.45; IX = 0.40; X = 0.28.

Thorax: Sides of prothorax with large, conical tubercle centrally. Pronotum with large, conical, elevated tubercle on each side of anterior half, and carina-shaped longitudinal tubercle centrally, from base to apex, widened on posterior half; coarsely punctate, except smooth tubercles, and a few finer punctures on lateral tubercles of prothorax and area between anterolateral tubercles and posterior quarter; central area with small white pubescent macula close to anterior and posterior margin (anterior macula distinctly smaller), dense orangish-brown pubescence surrounding tubercles, pubescence more pale yellow laterally, whitish on inferior region and apex of lateral tubercles of prothorax, brownish on tubercles, area between anterolateral tubercles and posterior margin, and base and part of posterior area of lateral tubercles of prothorax. Sides of prothorax coarsely, abundantly punctate; anterior half and superior region of posterior half with orangish-brown pubescence, and remaining surface with grayish-white pubescence. Ventral surface of thorax with abundant grayish-white pubescence not obscuring integument. Sides of prosternal process slightly sinuous; narrowest area 0.25 times procoxal width. Sides of mesoventral process sinuous, covering part of coxae, and apex emarginate. Scutellum with grayish-white pubescence basally and centrally (almost hourglass-shaped),and brownish, less conspicuous pubescence on remaining surface. Elytra: Not strongly narrowed toward posterior area, 4.2 times prothoracic length, exposing part of last abdominal segment,coarsely, sparsely punctate on basal third, punctures gradually finer, sparser toward apex; pubescence mostly orangish-brown, irregularly interspersed with abundant, both brown and white pubescent areas (white pubescence forming oblique, wide, irregular band on sides of anterior third, and fragmented, irregular lines on posterior ⅔); with short, erect, sparse brownish setae throughout. Legs: Femora with abundant yellowish-brown pubescence not obscuring integument dorsally on basal ⅔, mostly brownish with whitish setae interspersed on posterior third; ventral surface with abundant grayish-white pubescence on peduncle, sparser on club (pubescence more yellowish-brown toward apex of pro- and mesofemora). Tibiae with three whitish pubescent rings, one near base, one about middle, another apically (apical ring not reaching ventral surface); remaining surface with brownish, slightly conspicuous pubescence, except posterior third of ventral surface and dorsal sulcus of mesotibiae with dense, bristly yellowish-brown pubescence; apex of meso- and metatibiae with fringe of thick yellowish-brown setae; with long, erect, sparse yellowish setae. Metatarsomere I as long as II-III together.

Abdomen: Ventrites with abundant yellowish-white pubescence not obscuring integument, except glabrous apex of ventrites 1-4;apex of ventrite 5 centrally concave.

Dimensions (mm) (holotype male): Total length, 17.30; prothoracic length, 2.70;anterior prothoracic width, 3.75; posterior prothoracic width, 3.65; maximum prothoracic width (between apices of lateral tubercles), 4.85; humeral width, 5.90; elytral length, 11.25.

Type material: Holotype male from MEXICO, Jalisco: Tuxcacuesco , 860 m, 19-22.VI.2013, R. Cunningham leg. ( CNIN).

Etymology: This species is named after Richard Cunningham (Show Low, Arizona, U.S.A.) who collected the holotype.

Remarks: The general appearance of Aegomorphus cunninghami sp. nov., resembles several species currently included in Aegomorphus , Acanthoderes (Acanthoderes) Audinet-Serville, 1835 , and Scythropopsis , especially due to the elytral pubescence. It differs from males of A. chamelae Chemsak & Giesbert, 1986 (see photographs of the on Bezark, 2021), by the antennomeres III and IV slen- der and longer (shorter and thicker in males of A. chamelae ), prothorax proportionally smaller, shorter than basal width of the elytron (proportionally larger, about as long as basal width of the elytron in males of A. chamelae ), and absence of large white pubescent band on posterior quarter of the elytra (present in A. chamelae ). The new species differs from A. maccartyi ( Chemsak & Hovore, 2002) (see photographs of the on Bezark, 2021), by the elytral setae on the ventral surface of the antennae and tibiae sparser and shorter (more abundant and longer in A. maccartyi ), elytral erect setae sparser (moderately abundant in A. maccartyi ), and by the prothorax proportionally smaller (larger in males of A. maccartyi ). It differs from A. quadrigibbus (Say, 1831) , by the distance between upper eye lobes shorter ( Fig. 3E ) (wid- er in A. quadrigibbus – Fig. 3G ), and by the lower eye lobes distinctly larger ( Fig. 3D ) (smaller in A. quadrigibbus – Fig. 3H ). Aegomorphus cunninghami differs from A. ramirezi ( Chemsak & Hovore, 2002) (see photographs on Bezark, 2021), by the slender body shape ( Fig. 3A ) (stouter in A. ramirezi ), and by the distance between upper eye lobes smaller ( Fig. 3E ) (wider in A. ramirezi – Fig. 3J ). It can be separated from A. penrosei ( Chemsak & Hovore, 2002) (see photographs on Bezark, 2021), by the slender body shape ( Fig. 3A ) (stouter in A. penrosei ), and absence of moderately large black macula on posterior third of the elytra (present in A. penrosei ). It differs from A.robustus Santos-Silva,Botero & Wappes,2020 (see photographs on Bezark, 2021), by the slender body shape ( Fig. 3A ) (stouter in A. robustus ), by the distance between upper eye lobes smaller ( Fig. 3E ) (wider in A. robustus – Fig. 3K ), and larger lower eye lobes ( Fig. 3D ) (smaller in A. robustus – Fig. 3K ). The new species differs from A. albosignus (Chemsak & Noguera, 1993) (see photographs on Bezark, 2021), especially by the body ( Fig. 3A ) slender (stouter in A. albosignus ), distance between upper eye lobes shorter ( Fig. 3E ) (wider in A. albosignus – Fig. 3F ), and absence of large area with white pubescence on the elytra (present in A. albosignus ). It can be separated from A. circumflexus (Jacquelin du Val, 1857) , especially by the lower eye lobes distinctly larger ( Fig. 3D ) (smaller in A.circumflexus – Fig. 3I ). From A. borrei ( Dugès, 1885) it differs by the absence of large continuous area with white pubescence (present in A. borrei ). The new species also resembles some species currently placed in Acanthoderes (Acanthoderes) (see photographs on Bezark,2021), which probably belong to Aegomorphus or Scythropopsis : A. (A.) albifrons Chemsak & Hovore, 2002 ; A. (A.) aliciae Chemsak & Hovore, 2002 ; A. (A.) bicolor Chemsak & Hovore, 2002 ; A. (A.) ferruginea Chemsak & Hovore, 2002 ; A. (A.) giesberti Chemsak & Hovore, 2002 ; and A. (A.) hondurae Chemsak & Hovore, 2002 . However, the new species differs from all of them by the body slender, and by the distance between upper eye lobes smaller.

Figures

Figure 3.(A-E)Aegomorphuscunninghamisp.nov.,holotype male:(A)Dorsal habitus;(B)Ventralhabitus;(C)Lateralhabitus;(D)Head,frontal view;(E)Head,dorsal view.(F)Aegomorphus albosignus(Chemsak&Noguera,1993),holotype male,head,dorsalview.(G-H) Aegomorphusquadrigibbus(Say,1831),male:(G) Head,dorsal view; (H) Head, frontal view.(I) Aegomorphus circumflexus (Jacquelin du Val, 1857), male, head, frontal view.(J) Aegomorphus ramirezi (Chemsak & Hovore, 2002), paratype male,head,dorsalview.(K) Aegomorphus robustus Santos-Silva,Botero &Wappes,2020,holotype male,head,frontal view.Figure 3J by Larry G.Bezark.