Cacostola rothschildi 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 : 12-13

Cacostola rothschildi Wappes and Santos-Silva , new species

( Fig. 38–42 )

Description. Female. Integument mostly dark brown; head mostly black; anteclypeus reddish-brown; apex of palpomeres yellowish-brown; basal half of antennomeres III–IV dark reddish-brown; basal half of antennomeres V–VI reddish-brown.

Head. Frons, vertex and area behind eyes finely, abundantly punctate; with testaceous and white pubescence mixed, partially obscuring integument. Genae 0.55 times length of lower eye lobe; finely, sparsely punctate; with sparse (denser close to eye), testaceous and white setae intermixed. Antennal tubercles moderately elevated, with nearly indistinct inner projection; widely separated; sculpturing as on frons; pubescence as on frons, but obscuring integument. Postclypeus finely, sparsely punctate close to frons, nearly smooth close to anteclypeus; with testaceous and white pubescence intermixed close to frons, distinctly sparser toward anteclypeus, glabrous laterally; with a few long, erect, dark setae on sides of wide central area. Labrum with white pubescence close to anteclypeus, not obscuring integument, with dense testaceous pubescence on remaining surface, and fringe of testaceous pubescence on anterior margin. Mandibles with testaceous and white pubescence on basal 2/3 of outer surface, not obscuring integument. Distance between upper eye lobes 0.47 times length of scape; in frontal view, distance between lower eye lobes 0.87 times length of scape. Antennae (missing distal portion of antennomere VI, and antennomeres VII–XI of right antenna of holotype; missing distal half of antennomere V, and antennomeres VI–XI of left antenna of holotype; missing antennomeres VII–XI of right antenna of paratype; missing antennomeres III–XI of left antenna of paratype) equal to elytral length, almost reaching posterior quarter of elytra (measured in the paratype, apex of antennomere VI). Scape with testaceous and white pubescence intermixed on basal 2/3, nearly entirely testaceous on posterior third, nearly obscuring integument; pedicel with white pubescence basally, testaceous on remaining surface, partially obscuring integument; antennomere III with testaceous pubescence nearly obscuring integument, with white setae interspersed (denser laterally and ventrally on basal half); light area of antennomeres IV–VI with white pubescence, nearly obscuring integument, and remaining surface with dark brown pubescence, with white pubescence interspersed; antennomeres with erect, sparse, thick dark setae ventrally (sparser toward VI). Antennal formula (ratio) based on length of antennomere III (only paratype measured): scape = 0.69; pedicel = 0.16; IV = 1.09; V = 1.00; VI = 0.84.

Thorax. Prothorax wider than long; sides slightly rounded centrally. Pronotum finely, abundantly punctate (punctures slightly coarser than on vertex); with reddish-brown pubescence partially obscuring integument, with white setae interspersed (white setae denser on some areas, forming distinct band laterally). Sides of prothorax with sculpturing as on pronotum; with reddish-brown pubescence nearly obscuring integument, with white setae interspersed (forming longitudinal, distinct band superiorly); with a few long, erect, dark setae posteriorly near pronotum. Ventral surface of thorax with dense reddishbrown and white pubescence laterally, nearly entirely white centrally, except on prosternal process and mesoventral process with white pubescence interspersed by reddish-brown pubescence. Prosternal process gradually widened toward apex; narrowest area (base) 0.45 times width of procoxal cavity. Mesoventral process 0.75 times width of mesocoxal cavity. Scutellum with reddish-brown pubescence, not obscuring integument, with white setae interspersed. Elytra. Parallel-sided at basal 4/5, distinctly narrowed at posterior fifth toward rounded apex; finely, abundantly punctate throughout (punctures similar to those of pronotum); with yellowish-brown and white pubescence intermixed, partially obscuring integument on some areas (white pubescence more abundant on some areas) and irregular areas with sparse reddish-brown pubescence interspersed. Legs. With moderately abundant reddish-brown and white setae intermixed (white setae denser on some areas).

Abdomen. Ventrites with reddish-brown and white setae intermixed, nearly obscuring integument (white setae distinctly denser on ventrite V). Apex of ventrite V concave.

Variation. Integument mostly black; basal half of tarsomeres V dark reddish-brown; frons, vertex and area behind eyes with yellow and white pubescence intermixed; scape with yellow and white pubescence intermixed; white pubescence missing on distal area of antennomeres IV–VI; pronotum white pubescent, with yellow setae interspersed, except one large, semielliptical area on each side of anterior half with yellow pubescence not obscuring integument; sides of prothorax with yellow and white pubescence intermixed; scutellum, elytra, legs, ventral surface of thorax, and abdominal ventrites reddish-brown pubescent with yellow pubescence intermixed.

Dimensions (mm), holotype / paratype. Total length, 9.25/9.60; prothoracic length, 1.30/1.35; anterior prothoracic width, 1.50/1.55; posterior prothoracic width, 1.60/1.65; maximum prothoracic width, 1.70/1.70; humeral width, 2.30/2.50; elytral length, 7.15/7.30.

Type material. Holotype female from ARGENTINA, Entre Rios: 18 km NW Villaguay , 14.I.1989, O’Brien and G. Wibmer col. ( FSCA, formerly ACMT) . Paratype female from BRAZIL, Santa Catarina: Rio Vermelho, XII.1948, formerly Dirings col. ( MZSP) .

Remarks. The types of Cacostola rothschildi sp. nov. were initially found in the MZSP collection and identified as being C. fusca . However, each gena is shorter in C. rothschildi (0.55 times length of lower eye lobe; 0.75 in C. fusca ), the distance between the lower eye lobes is less (from 1.3 to 1.4 times length of lower eye lobe; 1.65 times in C. fusca ), the antennal tubercles are less elevated and further from each other (distance greater than the height of the antennal tubercle; about equal in C. fusca ), the antennomeres are more slender (slightly thicker in C. fusca ), and antennomere III is longer than the scape and pedicel together (about as long in C. fusca ).

Etymology. Named to recognize and thank Mark Rothschild, Membracidae expert and FSCA volunteer, for his generous identification of thousands of these beautiful critters collected in the American tropics by the first author.

Figures

Figures 38–44. Cacostola spp. 38–41) Cacostola rothschildi, holotype female. 38) Dorsal habitus. 39) Ventral habitus. 40) Lateral habitus. 41) Head, frontal view. 42) Dorsal habitus, Cacostola rothschildi, paratype female. 43) C. mexicana, dorsal habitus, specimen from USNM. 44) Pachypeza simplex, holotype, dorsal habitus.