Cacostola nearnsi Wappes and Santos-Silva, 2019

Wappes, James E. & Santos-Silva, Antonio, 2019, New species and taxonomic notes for Cacostola Fairmaire and Germain, 1859 (Coleoptera: Cerambycidae: Lamiinae: Onciderini), Insecta Mundi 741 (741), pp. 1-20 : 10-12

Cacostola nearnsi Wappes and Santos-Silva , new species

( Fig. 28–33 )

Description. Male. ( Fig. 28–32 ). Integument mostly dark brown; anteclypeus and posterior area of labrum testaceous; mouthparts dark reddish-brown, except apex of palpomeres yellowish-brown; antennomeres III–IV brown with darker apex; antennomere V–VI reddish-brown on basal quarter, brown on remaining surface (lighter on VI), except apex narrowly darker; VIII–IX yellowish-brown basally, reddish-brown on remaining surface; antennomere X reddish-brown; antennomere XI yellowish-brown, gradually yellower toward apex; elytra with longitudinal, nearly indistinct dark reddish-brown band from base to near apex dorsally; tarsomere V dark reddish-brown, apex black.

Head. Frons elongate; finely, sparsely punctate; with yellowish-brown pubescence partially obscuring integument. Vertex and area behind eyes finely punctate (punctures slightly denser than on frons); area between antennal tubercles and upper eye lobes with yellowish-brown pubescence nearly obscuring integument; central area of vertex with yellowish-brown pubescent band fused with pubescence between upper eye lobes of same color; remaining surface of vertex and superior area behind upper eye lobes with greenish-brown pubescence, partially obscuring integument (shorter than yellowish-brown pubescence); remaining surface of area behind upper eye lobes and behind lower eye lobes with yellowish-brown pubescence partially obscuring integument, slightly sparser toward ventral surface of lower eye lobes. Genae 0.5 times length of lower eye lobe; finely, sparsely punctate; with yellowish-brown pubescence not obscuring integument, gradually sparser toward frons, except narrow distal area glabrous. Antennal tubercles elevated, with inner projection small; together V-shaped; sculpturing as on frons, distal area smooth; with yellowish-brown pubescence partially obscuring integument, sparser near apex. Postclypeus finely, sparsely punctate (punctures finer and sparser than on frons); with yellowish-brown pubescence denser close to frons, sparser toward anteclypeus, except pale-yellow pubescent centrally. Labrum glabrous close to anteclypeus, with yellowish-white pubescence not obscuring integument on central area, with abundant yellow setae directed forward anteriorly. Mandibles with sparse yellowish-brown pubescence on outer surface. Distance between upper eye lobes 0.23 times length of scape; in frontal view, distance between lower eye lobes 0.53 times length of scape. Antennae 2.55 times elytral length, reaching elytral apex near apex of antennomere VI. Scape and pedicel with yellowish-brown pubescence partially obscuring integument (more yellowish-white depending on light intensity); antennomere III with grayish-white pubescence basally, light yellowish-brown on remaining surface; antennomeres IV–VIII with yellowish-white pubescence on light colored area, nearly inconspicuous, light yellowishbrown on remaining surface; antennomeres IX–XI with light yellowish-brown pubescence not obscuring integument; antennomeres III–IV with short, sparse, thick dark setae ventrally (distinctly sparser on IV). Antennal formula (ratio) based on length of antennomere III (only holotype measured): scape = 0.68; pedicel = 0.14; IV = 1.17; V = 1.14; VI = 1.03; VII = 0.90; VIII = 0.85; IX = 0.85; X = 0.88; XI = 1.00.

Thorax. Prothorax slightly wider than long; sides with small, rounded projection on posterior third, close to posterior constriction, slightly divergent from anterolateral angles to rounded projection. Pronotum coarsely, abundantly punctate; with three longitudinal, wide, dense pale-yellow pubescent bands, one centrally, one on each side; remaining surface with greenish-brown pubescence not obscuring integument. Sides of prothorax coarsely, abundantly punctate; with pale yellow pubescence partially obscuring integument. Ventral surface of thorax with dense pale-yellow pubescence nearly obscuring integument (more yellowish-brown depending on light intensity). Narrowest area of prosternal process 0.25 times width of procoxal cavity. Mesoventral process 0.7 times width of mesocoxal cavity. Scutellum with pale yellow pubescence nearly obscuring integument. Elytra. Parallel-sided at basal 3/4, distinctly narrowed at posterior quarter toward rounded apex; coarsely, abundantly punctate on basal half, slightly finer, sparser toward apex; with longitudinal pale yellow pubescent bands from base to apex, starting dorsally between humerus and suture (three dorsally, one laterally), almost entirely fused on some areas, especially basally and apically; another pale yellow pubescent band along suture, from scutellum to apex, gradually narrowed at its basal third, partially white centrally; remaining surface with brownish pubescence not obscuring integument. Legs. Femora with yellowish-brown pubescence, abundant but not obscuring integument, more yellowish-white ventrally. Tibiae with yellowish-white pubescence, with yellowish-brown pubescence interspersed, except brownish pubescence on dorsal third of mesotibiae.

Abdomen. Ventrites with pale yellow pubescence, slightly denser laterally, denser on each side of central area, together forming sinuous band, and slightly denser centrally on ventrites I–IV. Apex of ventrite V ventrally concave, broadly transverse and fringed with darker pubescence.

Female ( Fig. 33 ). Antennae shorter, reaching elytral apex at base of antennomere VIII. Apex of ventrite V broadly transverse, feebly notched and fringed with darker pubescence.

Dimensions (mm), holotype male/ paratype females. Total length, 9.15/9.70–10.00; prothoracic length, 1.35/1.30–1.40; anterior prothoracic width, 1.35/1.45–1.50; posterior prothoracic width, 1.40/1.55–1.60; maximum prothoracic width, 1.45/1.65–1.60; humeral width, 2.00/2.20–2.40; elytral length, 6.70/7.20–7.40. The paratype males were not measured.

Type material. Holotype male from BOLIVIA, Santa Cruz: 4–6 km SSE Buena Vista (Flora and Fauna Hotel), 17-30.IV.2003, R. Clarke col. ( FSCA) . PARATYPES – BOLIVIA, Santa Cruz: 4–6 km SSE Buena Vista (Flora and Fauna Hotel), 1 female, 27-29.X.2000 ( MZSP) Buena Vista ( El Cairo ), 1 female, 17.XI.2008, Galileo, Vanin and Martins col. ( MZSP) ; 4.7 km SSE Buena Vista (Flora and Fauna Hotel ), 430m, 1 female, 15–22.XI.2001, blacklight trap, transition forest, B. K. Dozier col. ( FSCA) ; Achira Amboro , 2 females, 1.XII.2013, Skillman and Wappes col. ( FWSC) ; Florida, 4 km N Bermejo, 1 female, 15.XII.2012, Refugio los Volcanes , 18°06′S, 63°36′W, 1000–1200 meters, Skillman and Wappes col. ( FWSC) ; Buena Vista, vic. Flora and Fauna Hotel , 1 male, R. Morris col. ( RFMC) ; Above Achira , 18°09′S, 63°47′W, 1 male, 10.XII.2011, Morris and Wappes col. ( RFMC) ; Cord. Prv., Rd to Itai , 83 km N Camiri, 890 m, 1 male, 17–18.XII.2011, 19°20′S, 63°28′W, Wappes, Lingafelter and Woodley col. ( ACMT) ; Achira area (N Rd. to Amboró on Achira ridge), 1 male, 5–6.II.2013, 18°09′S, 63°48′W, Wappes, Bonaso, Lingafelter and Garzon col. ( SWLC) ; Chaco above Achira, 1 male, 1 female 22-25.I.2007, 1730 m, Prov. Florida , Vicoquin area , 18°07′S, 63°47′W, Wappes, Lingafelter and Prena col. ( ACMT) ; Above Achira Rd. to Floripondo , 1900 m, 1 female, 10.XII.2011, 18°09′S 63°47′W, Wappes, Bonaso and Morris col. ( ACMT) ; Rd to Amboró above Achira , 1 female, 10–11.X.2006, Ag cut and burn area, 18°07′43″S, 63°47′98″W, el. 1940 m, Wappes, Nearns and Eya col. ( GHNC) ; 4 k N Bermejo, 1 female, 11–17.XII.2012, Refugio los Volcanes , 18°06′S, 63°36′W, 1045–1350 m, Wappes and Skillman col. ( ACMT) ; 4–6 km SSE Buena Vista, F and F Hotel , 1 female, 27–29.X.2000, Wappes and Morris col. ( ACMT) . PANAMA, Coclé: Chiriqui, Arriba , 8°41.078′N, 80°11.526′W, 1 female, 04.XII.2016, local collector ( AACP) .

Remarks. Cacostola nearnsi sp. nov. is similar to C. acuticauda Marinoni and Martins, 1982 ( Fig. 34–37 ), but differs as follows: distance between upper eye lobes shorter than widest area of scape; frons in male ( Fig. 31 ) slightly longer than length of lower eye lobe; distance between antennal tubercles subequal to height of antennal tubercle. In C. acuticauda , the distance between the upper eye lobes ( Fig. 34 ) is equal to the widest area of the scape, the frons in the male ( Fig. 36 ) is much wider than the length of the lower eye lobe, and the distance between antennal tubercles ( Fig. 36 ) is distinctly further than the height of the antennal tubercle. It differs from C. gracilis Marinoni and Martins, 1982 by the elytra lacking longitudinal deepening and not swelling slightly before the apex (both features present in C. gracilis ). Cacostola nearnsi differs from C. sirena Dillon and Dillon, 1946 by the elytra being mostly darker (pale and dark reddish-brown in C. sirena ), the distance between the upper eye lobes less than the widest area of the scape (distinctly wider in females of C. sirena ), the dorsal pubescent bands of the elytra not distinctly separated from base to apex (separated in C. sirena ), and the elytral apex distinctly narrowed toward the apex (feebly tapering to apices in C. sirena ).

Etymology. Named to honor and recognize the entomological achievements of Eugenio H. Nearns, including his taxonomic expertise in New World Onciderini and as an editor for several entomological journals.

Figures

Figures 28–37. Cacostola spp. 28–32) Cacostola nearnsi, holotype male. 28) Dorsal habitus. 29) Ventral habitus. 30) Lateral habitus. 31) Head, frontal view. 32) Head, dorsal view. 33) Cacostola nearnsi, paratype female, dorsal habitus. 34–37) Cacostola acuticauda. 34) Head, dorsal view, paratype male. 35) Head, frontal view, paratype male. 36) Head, frontal view, holotype male. 37) Dorsal habitus, holotype male.