Aegomorphus irumus ( Galileo & Martins, 2011 ),

Santos-Silva, Antonio, Botero, Juan Pablo & Wappes, James E., 2020, Neotropical Acanthoderini (Coleoptera, Cerambycidae, Lamiinae): Synonymies and new status in some genera, new species, transferences and new distributional records, Papéis Avulsos de Zoologia 60, pp. 1-40: 26-27

publication ID 10.11606/1807-0205/2020.60.06

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Aegomorphus irumus ( Galileo & Martins, 2011 )

comb. nov.

Aegomorphus irumus ( Galileo & Martins, 2011)  , comb. nov.

( Figs. 115-120View Figures 110-120)

Psapharochrus irumus Galileo & Martins, 2011: 178  ; Wappes & Arias, 2016:8 (holotype); Monné, 2019: 296 (cat.).

Description: Female ( Figs. 115-119View Figures 110-120): Integument mostly black; mouthparts reddish-brown, except maxillary palpomeres II-IV, and labial palpomeres II-III black with reddish-brown apex; anteclypeus, labrum, protarsomeres III-V, meso- and metatarsomeres I and III-V reddish-brown; antennomere IV with basal and medial dark reddish-brown rings; remaining antennomeres dark reddish-brown on basal half; apex of meso- and metatibiae yellowish-brown.

Head: Frons coarsely, sparsely punctate; with yellowish-brown pubescence partially obscuring integument, white pubescence centrally, between lower eye lobes and antennal tubercles; with a few long, erect dark setae (apex yellowish) close to lower eye lobes. Area between antennal tubercles and upper eye lobes with central diamond-shaped area, coarsely, sparsely punctate, with sparse yellowish-white pubescence with yellowish-brown pubescence interspersed, sides of posterior area with denser yellowish-brown pubescence; sides extending toward prothorax with dense yellowish-brown pubescent band, narrow nearly glabrous area close to eyes. Central area of vertex close to prothorax with one large semielliptical area with brown pubescence on each side of median groove. Area behind eyes with yellowish-brown pubescence close to eyes (this area widened toward ventral surface), with white pubescence interspersed, glabrous toward prothorax. Genae about as long as lower eye lobe; with sparse light yellowish-brown pubescence, sparser toward apex. Postclypeus centrally and laterally glabrous, with bristly yellowish-brown pubescence on remaining surface, with long setae of same color interspersed, and a few long, erect dark setae. Posterior ¾ of labrum coplanar with anteclypeus, inclined at anterior quarter; with short yellowish-white pubescence close to anteclypeus, gradually longer toward apex of coplanar area; anterior margin with fringe of nearly golden setae. Gulamentum smooth, wide posterior area glabrous, depressed, anteriorly with short yellowish-brown pubescence not obscuring integument. Distance between upper eye lobes 0.58 times length of scape; in frontal view, distance between lower eye lobes equal to length of scape. Antennae 1.6 times elytral length, reaching elytral apex at posterior quarter of antennomere VIII. Scape clavate, not sulcate dorsally; dark-brown pubescent with white pubescence interspersed, white pubescence more abundant ventrally, somewhat yellowish-brown on base of ventral surface; with long, erect, sparse yellowish setae ventrally. Pedicel dark-brown pubescent with white pubescence interspersed, especially ventrally; ventral surface with long, sparse, erect yellowish setae. Antennomeres III-IV with basal and almost central white pubescent rings (denser on IV); remaining surface with dark-brown pubescence; ventral surface with long, sparse, erect yellowish setae. Remaining antennomeres with white pubescence on light area, dark-brown pubescence on dark area; with long, sparse, erect dark setae ventrally (yellowish on anterior area of V). Antennal formula (ratio) based on length of antennomere III (only one female measured): scape = 0.72; pedicel = 0.22; IV = 0.80; V = 0.56; VI = 0.48; VII = 0.46;VIII = 0.38; IX = 0.36; X = 0.28; XI = 0.26.

Thorax: Lateral conical tubercle of prothorax large, slightly inclined upward,with apex acute.Pronotum with large, elevated tubercle on each side, with top of tubercle truncate and somewhat bifid; a smaller, somewhat conical central tubercle at posterior half; coarsely, moderately abundantly punctate between tubercles, and between anterior margin and lateral tubercles, coarser along posterior sulcus; punctures sparser, shallower on lateral tubercles of prothorax; tubercles glabrous on top; central area with yellowish-brown pubescence not obscuring integument, except narrow, longitudinal pale yellow-pubescent band anteriorly and posteriorly, and white pubescence on sides of posterior quarter; area between side of lateral tubercles and on lateral tubercles of prothorax with brown, yellowish-brown, and whitish pubescence intermixed. Sides of prothorax coarsely, moderately abundantly punctate; with white pubescence not obscuring integument, more yellowish anteriorly and posteriorly. Prosternum centrally with white pubescence not obscuring integument, more yellowish laterally. Prosternal process with narrowest area about as wide as half the width of procoxal cavity; with white pubescence not obscuring integument. Ventral surface of meso- and metathorax with pale-yellow pubescence laterally, white centrally (sparser on center of mesoventrite). Mesoventral process slightly narrower than width of mesocoxal cavity; lateral margins elevated, especially anteriorly. Scutellum with dark brown pubescence, except narrow, central, longitudinal yellowish pubescent band (sometimes absent). Elytra: Humeri very slightly projected forward; with centrobasal crest between humeri and scutellum elevated, covered with small tubercles;with slightly distinct carina from apex of centrobasal crest to posterior third, and another between the crest and humeri; coarsely, sparsely punctate; apex obliquely truncate, with outer angle projected; irregular areas with white pubescence (not obscuring punctures) surround- ed by yellowish-brown pubescence, except dense, white U-shaped pubescent macula centrally on anterior third (connecting across both elytra), and three large, somewhat transverse, irregular areas with dark-brown pubescence (one on anterior third; one about middle; another on posterior third). Legs: Femora with dense white pubescence on peduncle, sparser on club. Tibiae with three white pubescent rings, one near base, one about middle, another at apex; remaining surface with brown pubescence not obscuring integument,with long, sparse,erect yellowish setae interspersed, especially in meso- and metatibiae.

Abdomen: Ventrites with white pubescence not obscuring integument; apex of ventrite V narrow, truncate.

Variation: Elytral pubescence is noticeably variable as in several species of Aegomorphus  . Extremes could easily be confused with different species. In some specimens (including the holotype), the sides of anterior half have dense white pubescence forming large band distinctly attaining center of dorsal area,in others this band is restrict- ed to inclined area, and in some it is nearly absent. The same occurs in the fascia along the sides in posterior half.

Dimensions (mm), male (2)/female (2): Total length, 10.55-10.70/10.60-10.95; prothoracic length, 2.05-2.10/1.90-2.00; anterior prothoracic width, 2.65-2.80/2.60-2.80; posterior prothoracic width, 2.55-2.65/2.35-2.70; maximum prothoracic width,

3.40-3.70/3.35-3.65; humeral width, 3.90-4.10/3.90-4.30; elytral length, 6.85-6.90/6.85-7.25.

Material examined: BOLIVIA, Santa Cruz: 4-6 km SSE Buena Vista (F&F Hotel), 1 male, 22-31.X.2002, Wappes col.( ACMT)  ; 1 male, 26-27.X.2014, Wappes col. ( ACMT)  ; 4-5 km N Achira, road to Amboro , 1 female, 12-13.X.2000, Wappes & Dozier col. ( MZSP)  ; Huaico (14°40′S, 63°24′W; 430 m), 1 female, 21.XI.2013, Skillman & Wappes col. ( FWSC)GoogleMaps  .

Known geographical distribution ( Monné, 2019; Tavakilian & Chevillotte, 2019): Bolivia (Santa Cruz).

Remarks: The coarsely granulated eyes and the pronotum lacking a central depression places this species in Aegomorphus  .


Brazil, Sao Paulo, Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo


Fred W. Skillman


Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo














Aegomorphus irumus ( Galileo & Martins, 2011 )

Santos-Silva, Antonio, Botero, Juan Pablo & Wappes, James E. 2020

Psapharochrus irumus

Monne, M. A. 2019: 296
wappes & Arias 2016: 8
Galileo, M. H. M. & Martins, U. R. 2011: 178