Juninia raberi, Heffern & Santos-Silva, 2022

Heffern, Daniel & Santos-Silva, Antonio, 2022, Notes on Purusia Lane, Juninia Lane, and Sibapipunga Martins & Galileo (Coleoptera, Cerambycidae, Lamiinae), and description of a new species of Juninia, Zootaxa 5141 (2), pp. 151-162 : 156-159

Juninia raberi sp. nov.

( Figs 33–38 )

Purusia acreana ; Swift et al., 2010: 60 (misidentification).

Description. Holotype female ( Figs 33–37 ). Integument mostly reddish brown, with irregular brown areas interspersed; mandibles black on anterior area; scape dark brown; pedicel dark reddish brown; antennomeres III–IV orangish brown with apex brownish; antennomere V orangish brown basally, gradually brown toward apex; remaining antennomeres brown; anteclypeus yellowish brown; sides and anterior third of labrum yellowish brown; scutellum blackish; elytra slightly, gradually lighter toward apex, with areas surrounding white pubescent maculae slightly darker; legs dark orangish brown; ventral surface of abdomen dark brown basally, slightly lighter toward apex.

Head. Frons coarsely punctate, except smooth central area close to clypeus; with brownish pubescence not obscuring integument, and long, erect setae of same color close to eyes. Area between antennal tubercles and upper eye lobes, somewhat coarsely punctate, punctures absent centrally; with minute yellowish pubescence not obscuring integument. Remaining surface of vertex and most of area behind upper eye lobes with dense white pubescence entirely obscuring integument; inferior area with dense reddish-brown pubescence. Area between eye lobes and superior 2/3 of area behind lower eye lobes with inverted Y-shaped reddish-brown pubescent band on wide area close to eye, almost glabrous close to prothorax; inferior third with short, sparse reddish-brown setae close to eye, glabrous close to prothorax. Genae finely, transversely striate, except smooth apex; with minute, sparse reddishbrown setae, and short, erect setae of same color interspersed, except glabrous smooth area. Antennal tubercles moderately elevated; densely micropunctate; pubescence as on frons. Wide central area of postclypeus coarsely, shallowly punctate; with long, erect yellowish-brown setae interspersed. Sides of postclypeus smooth, glabrous. Labrum coplanar with anteclypeus at posterior third, inclined at anterior 2/3; with long, erect dark yellowish-brown setae directed forward. Outer side of mandibles with abundant dark yellowish-brown bristly setae on basal 2/3, glabrous on apical third. Gulamentum smooth, glabrous. Distance between upper eye lobes 0.83 mm; in frontal view, distance between lower eye lobes 2.45 mm. Antennae 2.0 times elytral length, reaching elytral apex at basal third of antennomere VII. Scape with minute yellowish pubescence not obscuring integument, and long, erect yellowish setae ventrally. Pedicel and antennomeres III–XI with yellowish pubescence not obscuring integument, and long, erect yellowish setae ventrally, setae gradually sparser toward XI; dorsal apex of antennomeres III–XI with a few long, erect yellowish setae. Antennal length (mm): scape = 2.85; pedicel = 0.50; III = 4.80; IV = 3.25; V = 2.80; VI = 2.35; VII = 2.30; VIII = 2.00; IX = 2.00; X = 1.90; XI = 1.75; XII = 1.35.

Thorax. Pronotum distinctly lowered on posterior quarter; coarsely, sparsely punctate; with narrow sulcus about middle of central area; sides of anterior half with dense, subelliptical white pubescent macula; sides of posterior third with dense, comma-shaped white pubescent macula; remaining surface with minute, abundant yellowish pubescence not obscuring integument; with long, erect yellowish setae interspersed on posterior third. Sides of prothorax coarsely, sparsely punctate; with wide, transverse, dense white pubescent macula close to prosternum; remaining surface with minute, abundant yellowish pubescence not obscuring integument. Prosternum narrow, somewhat coarsely, shallowly punctate; with yellowish pubescence not obscuring integument. Prosternal process slightly, gradually widened from base to posterior quarter, then strongly widened; narrowest area 0.2 times procoxal width. Mesoventrite and mesoventral process with minute yellowish pubescence not obscuring integument. Mesanepisternum and mesepimeron with dense white pubescence obscuring integument. Base of metanepisternum with yellowish pubescence not obscuring integument; remaining surface with dense white pubescence obscuring integument. Sides of metaventrite with dense white pubescence obscuring integument (inner margin of this area sinuous); remaining surface with abundant yellowish-white pubescence not obscuring integument. Scutellum glabrous. Elytra. Coarsely, somewhat abundantly punctate on basal half, smooth on posterior half; apex obliquely truncate, with outer angle spiniform; humeral carina distinct from humerus to posterior quarter; lateral carina present ( Fig. 36 ), placed close to humeral carina, distinct from base to about posterior third; with wide white pubescent macula on anterior quarter, with irregular margins, reaching scutellum and humeral carina, not reaching humerus, prolonged close to suture and diverging from it toward its rounded apex; middle with wide, irregular, dense white pubescent macula, from humeral carina to near suture; with dense, semi-circular white pubescent macula close to suture on posterior third; posterior quarter with somewhat large, irregular, dense white pubescent macula, from humeral carina to slightly after middle of dorsal surface; with dense, semielliptical white pubescent macula laterally near humerus, between humeral carina and epipleural margin; remaining surface with abundant yellowish pubescence not obscuring integument (pubescence denser from middle). Legs. Outer side of metacoxae with small, subcircular, dense white pubescent macula. Femora with abundant yellowish pubescence not obscuring integument, and long, erect setae of same color laterally on profemora, and ventrally on basal half of meso- and metafemora. Tibiae with abundant, both short and long, suberect yellowish setae, gradually more abundant toward apex. Metatarsomere I shorter than II–III together; tarsomeres III somewhat wide.

Abdomen. Ventrite 1 with somewhat small, circular, dense white pubescent macula on each side of middle, and triangular, dense white pubescent macula on each side of basal third; ventrites 2–3 with large, dense white pubescent macula laterally, slightly narrowed toward its inner area, not reaching apex (larger on 2); ventrite 4 with small, circular, dense white pubescent macula on each side, not reaching lateral margin; remaining surface of ventrites 1–3 and ventrite 5 with minute, abundant yellowish pubescence not obscuring integument, and long, erect, sparse setae of same color interspersed (erect setae more abundant on 5). Apex of ventrite 5 distinctly emarginate centrally.

Dimensions in mm. Total length, 18.30; prothoracic length, 3.40; anterior prothoracic width, 3.90; posterior prothoracic width, 3.70; maximum prothoracic width, 4.05; humeral width, 5.70; elytral length, 14.00.

Type material. Holotype female from PANAMA, Bocas del Toro: Fortuna Cabins , 8.7814°N, 82.1909°W, 29.IV–6.V.2019, Brian Raber leg. ( TAMU, formerly DHCO) . Paratype female from COSTA RICA, Puntarenas: Quepos , 120 m, P. N. Manuel Antonio, L-S-370900, 449800, INBIO CR1000 218965, XI.1990, G. Varela & R. Zuniga leg. ( MNCR-A) .

Etymology. The new species is dedicated to Brian Raber, friend of the first author and collector of the holotype.

Remarks. Juninia raberi sp. nov. is provisionally included in this genus, awaiting the discovery of the male. It differs from J. annulifera ( Figs 13–17 ) as follows: posterior area of vertex and area behind upper eye lobes with dense white pubescent macula (absent in J. annulifera ); central area of the pronotum and most of the elytra with minute yellowish pubescence (yellowish-white on the pronotum and grayish-white on the elytra, both distinctly more conspicuous in J. annulifera ); pronotum with two dense white pubescent maculae on each side (with a single macula from base to apex in J. annulifera ); elytra with semicircular white pubescent macula close to the suture on posterior third (absent in J. annulifera ); lateral carina ( Fig. 36 ) placed close to the humeral carina from the base (not close to the humeral carina ( Fig. 16 ) in J. annulifera ). Additionally, Juninia raberi differs from the female of Sibapipunga beckeri ( Figs 21–26 ) by the longer antennae, elytra with semicircular white pubescent macula close to the suture on the posterior third (absent in S. beckeri ), and tarsomeres III proportionally smaller (larger in S. beckeri ); it differs from females of Purusia acreana ( Figs 10–11 ) by the body proportionally stouter (slender in P. acreana ), spiniform projection of the outer elytral apex distinctly shorter (longer in P. acreana ), pronotum without dense white pubescent macula on center of posterior region (present in P. acreana ), and pronotum with two dense white pubescent maculae on each side (with a single macula from base to apex in P. acreana ).

Figures

FIGURES 33–38. Juninia raberi sp. nov. 33–37) Holotype female: 33) Dorsal habitus; 34) Ventral habitus; 35) Lateral habitus; 36) Elytral carinae; 37) Head, frontal view. 38) Paratype female, dorsal habitus (by Armando Ruiz Boyer).

FIGURES 13–17. Juninia annulifera (Kirsch, 1889). 13–16) Juninia leechi Lane, 1966, paratype male: 13) Dorsal habitus; 14) Ventral habitus; 15) Lateral habitus; 16) Elytral carinae. 17) Female, dorsal habitus.

FIGURES 21–26. Sibapipunga beckeri (Martins & Galileo, 1992). 21) Holotype female, dorsal habitus. 22–25) Male: 22) Dorsal habitus; 23) Ventral habitus; 24) Lateral habitus; 25) Frontal tubercles. 26) Holotype female, elytral carinae (by Diego de Santana Souza).

FIGURES 1–12. 1–8) Purusia acreana Lane, 1956, holotype male: 1) Dorsal habitus; 2) Ventral habitus; 3) Lateral habitus; 4) Elytral carinae; 5) Head, frontal view; 6) Head, lateral view; 7) Scape, apical cicatrix; 8) Scape, detail. 9–11) Purusia acreana, female: 9) Head, lateral view; 10) Dorsal habitus; 11) Ventral habitus. 12) Purusiella wappesi (Martins & Galileo, 2004), scape. Figure 12 by Francisco Eriberto de Lima Nascimento (MZSP).