Barra baruskae Trýzna, Carrasco & Blažej, 2022

Trýzna, Miloš, Carrasco, Juan Carlos & Blažej, Lukáš, 2022, Review of the Neotropical genera Barra Jordan and Brevibarra Jordan, with description of a new species of Barra from Nicaragua, notes on the tribe Piesocorynini Valentine, and new records of Brevibarra from Brazil and Ecuador (Coleoptera: Anthribidae), Zootaxa 5213 (3), pp. 243-268 : 253-254

Barra baruskae Trýzna, Carrasco & Blažej , sp. nov.

( Figs 39–47 , 75 )

http://zoobank.org/ urn:lsid:zoobank.org:act:5726F26D-D01D-470D-979E-50DB630664BE

Type locality. West Nicaragua, Las Flores near Masaya [ca. 11°59´N, 86°02´W] .

Type material. Holotype, male ( Figs 39–43 ): ‘ Nicaragua, Masaya / Las Flores / 1.viii.1994 / malaise trap’ [p] [without name of collector] // ‘ Barra / n. sp. [h] / det: B. D. Valentine [p]´03 [h, = 2003]’ ( MMBC) . Paratype, male: ditto, but 18.vii.1994 [p] ( MTDC) .

Red label [p] HOLOTYPE (or PARATYPE) / Barra / baruskae sp. nov. / M. Trýzna, J. C. Carrasco / & L. Blažej det., 2022.

Identification. Dorsal transverse carina nearly basal, slightly bisinuate, forming protruding lateral angle on sides. Lateral carinae of pronotum distinct, protruded, reaching to half of length of pronotum. Basal longitudinal carinulae of pronotum (sensu Jordan 1928: 151, Trýzna & Baňař 2021: 558) present, but due to nearly basal dorsal transverse carina, extremely short. Eyes relatively large, only weakly truncated anteriorly, dorsal ocular index 1.49 in male. Upper side of the body covered generally with brownish setae, disc of pronotum with distinct large nearly pentagonal whitish spot. Each even-numbered elytral interval with alternating sections of dark brown and whitish setae, most noticeable on elytral interval II. Body size ca. 6.1–6.3 mm. Colour pattern as in Figs 39–43 .

Description. Holotype, male ( Figs 39–43 ). Measurements (in mm): Total body length—6.15. Head: total length—1.15, length of rostrum—0.57, maximum width of rostrum—0.90, length of eye—0.63, maximum width across eyes—1.36, minimum distance between eyes—0.58. Antenna: length of segments: II—0.19, III—0.36, IV— 0.29, V—0.23, VI—0.21, VII—0.16, VIII—0.16, IX—0.26, X—0.16, XI—0.21, width of segment IX—0.14. Pronotum: maximum length—1.50, maximum width—2.33, minimum width—1.18. Elytra: maximum length—3.50, width in humeral part—2.30. Pygidium: maximum length—0.51, maximum width—0.67.

Coloration of the cuticle of entire body generally brown. Upper and lower part of head and pronotum dark brown. Elytra, abdominal ventrites and pygidium light brown. Antennae light brown, antennomeres IX–X dark (nearly black in paratype), XI light yellowish. Labrum distinctly yellow, basal part of mandibles light rusty, apical part and mandibular teeth black.

Vestiture ( Figs 39–43 ). Head ( Fig. 40 ) with sparse longer appressed yellowish setae, setae shorter and denser on upper and lower margin of eyes, and on outer edges of mandibles. Antennae ( Fig. 41 ) with erect and long light brown setae, they are located in the apical half of the antennomeres, setae on antennomeres VI–VIII the same length as length of each antennomere. Disc of pronotum ( Fig. 42 ) with characteristic wide strip (somewhat pentagonal in shape) of whitish setae, lateral sides with sparse yellowish setae. Lower side of pronotum including prosternum with distinct longer whitish setae. Pronotal declivity with short whitish pubescence. Elytra ( Fig. 39 ) covered with distinct longer subdecumbent setae. Each odd-numbered elytral interval with light-coloured brownish setae, each even-numbered elytral interval with alternating sections of dark brown and whitish setae, most noticeable on elytral interval II, on other elytral intervals these stripes much narrower. The same coloration is along the elytral suture. Indistinct bump in sub-basal part of each elytron with longer dark brown setae. Meso-, metasternum and all abdominal ventrites covered with sparse short whitish setae. All femora with sparse appressed whitish setae, tibiae with subdecumbent setae forming light-coloured rings in central and apical part. Basal part of tarsomeres I and II with light-coloured setae in basal part, rest of these tarsomeres and tarsomeres III–V brown. Pygidium covered with dense setae, mixed brown and whitish colours.

Structure. Head ( Fig. 40 ) short, however, it appears longer due to the long mandibles. Rostrum without any carinae, only with large but shallow depression reaching anteriorly to space between antennal scrobes, and posteriorly between front edges of the eyes. Sides of rostrum parallel. Ratio of rostrum length to maximum width 0.63. Dorsal and lateral part of rostrum only with uniform fine sculpture. Area between eyes without groove. Eyes subelliptical, only weakly emarginate on anterior parts. Dorsal ocular index 1.49. Ratio of maximum width across eyes to maximum width of rostrum 1.51.

Antennae ( Fig. 41 ) distinctly reaching posterior margin of pronotum. Scape and pedicel distinct, ca. 2 times as wide as antennomeres III–VII on apical parts, VIII wider than antennomeres III–VII in apical part, IX–XI not forming compact club, but with only separated antennomeres, IX 1.5 times longer than wider, X indistinctly longer then wide, XI ovoid.

Pronotum ( Fig. 42 ) conical, sides straight, not convex, pronotum distinctly transverse, ratio of its length to maximum width 0.64, widest at dorsal transverse carina, from here strongly narrowed anteriad. Dorsal transverse carina sub-basal to nearly basal, slightly bisinuate, widely and shallow emarginate in middle posteriad, continuous to sides, here forming protruding lateral angle. Lateral carinae of pronotum distinct, protruded, reaching to half of length of pronotum ( Fig. 43 ). Basal longitudinal carinulae of pronotum present, but due to nearly basal dorsal transverse carina, extremely short. Disc of pronotum convex, here the highest, pronotal declivity fluently descending.

Elytra ( Fig. 39 ) sub-oval, sides almost parallel, humeri developed, apical part of elytra broadly rounded. Ratio of the maximum length to maximum width of elytra 1.52. Elytra with pair of wide bumps in sub-basal part. Elytral striae with distinct punctures, elytral intervals wider than foveae, spaces between foveae approximately as wide as individual fovea.

Abdomen shorter than broad. Pygidium convex, widely rounded, ratio of the maximum length to maximum width 0.76.

Male genitalia and associated structures ( Figs 45–47 ). Aedeagus ( Fig. 45 ) long, narrow, widest in apical quarter. Tectum distinctly triangular, conspicuously narrowing apically. Apodemes of aedeagus long, converging posteriorly, diverged only in most distal part. Bridge of aedeagus inconspicuously developed. Tegmen ( Fig. 46 ) robust, moderately wide, with strongly sclerotized basal piece, apodeme of tegmen wide, straight, shorter than body of tegmen. Apex of tegmen broad, with distinct longer setae. Segment VIII ( Fig. 47 ) wider than long, trapezoidal, anterior margin of tergite VIII shallowly sinusoidal, widest in the basal part and then convergent apically, moderately sclerotized. Sternite IX ( Fig. 47 ) with symmetrical arms, length of arms ca. 0.5 as long as apodeme, arms slightly divergent, apodeme almost straight.

Etymology. Matronym, dedicated to the beloved sister of the co-author Lukáš Blažej, Barbora (tenderly Baruška) Polanská (Rumburk, Czech Republic).

Collecting circumstances. Collected with Malaise trap.

Distribution. Nicaragua, Las Flores (species known only from the type locality) ( Fig. 44 ).

Differential diagnosis. From other species of Barra it differs mainly by nearly sub-basal dorsal transverse carina, lateral carinae of pronotum distinct, protruded, reaching to half of length of pronotum, and completely different colour pattern. For more details see key below.

Figures

FIGURE 75. Map of distribution of Barra and Brevibarra species. Triangle—type locality, circle—other distribution. Barra baruskae sp. nov. (red), Barra salamandrina Frieser, 1983 (yellow), Barra gounellei Jordan, 1904 (blue), Brevibarra scotosagis Jordan, 1906 (magenta). Google.com/maps, modified.

FIGURES 39–43. Barra baruskae sp. nov., holotype male; 39, dorsal habitus; 40, head in dorsal view; 41, left antenna in dorsal view; 42, pronotum in dorsal view; 43, lateral habitus. Scale bars in mm.

FIGURES 44–50. 44–47, Barra baruskae sp. nov.; 44, map of the type locality, Google.com/maps, modified; 45–47, paratype male; 45, aedeagus in dorsal view; 46, tegmen in ventral view; 47, segment VIII, and sternite IX (= spiculum gastrale) in dorsal view (scale bars in mm); 48, Barra salamandrina Frieser, 1983, labels of paratype male (MTDC); 49, Barra gounellei Jordan, 1904, labels of holotype male; 50, Brevibarra scotosagis Jordan, 1906, labels of holotype female.