Piriana, Santos-Silva & Galileo & Mcclarin, 2018

Santos-Silva, Antonio, Galileo, Maria Helena M. & Mcclarin, Jim, 2018, Division of the genera Sparna Thomson, 1864 and Carterica Pascoe, 1858 (Coleoptera, Cerambycidae, Lamiinae, Colobotheini) with description of six new genera and eight new species, Zootaxa 4407 (1), pp. 1-28 : 9-10

Piriana , gen. nov.

Type species: Carterica mima Belon, 1903 .

Etymology. Tupi, “piriana”, meaning stripe, allusive to the longitudinal pubescent band on the pronotum of the known species of the genus. Feminine gender. In Tupi, the adjective proceeds, without modification in form, of concrete nouns. Thus, “piriana”, here used as a noun, also means striped.

Description. Body slightly flattened; head from hypognathous to slightly opisthognathous; frons subquadrate; antennal tubercles moderately elevated, their inner margins together form an open V; antennae longer than body; scape subcylindrical, slightly and gradually widened toward apex, not carinate and/or sulcate on inner side, with sparse or moderately sparse, long, erect, setae ventrally (distinctly dense in P. migsominea ); antennomere III not widened (slightly widened toward apex in P. migsominea ), with short, erect setae ventrally, distinctly shorter than scape; antennomere IV from as long as to slightly longer than III; prothorax trapezoidal or nearly so, obtusely rounded or forming short, but distinct spine near base, with short constriction between base and obtusely rounded or spiniform area; prosternal process laminiform or narrowed centrally; mesoventral process from laminiform to notably narrow (at most 1/7 width of mesocoxal cavity); elytra slightly, gradually widened toward distal sixth (slightly, gradually widened from base to at about middle, more distinctly widened from this point to about distal quarter, then narrowed toward apex in P. bosqi comb. nov. and P. migsominea comb. nov., with distinct spine on outer distal angle, obliquely, straightly truncate or sinuous toward sutural angle, which is rounded and unarmed or with short projection; elytra with humeral carina clearly marked from base to apex, or slightly marked and more distinct from basal quarter; elytra with sparse erect setae, sometimes more abundant; epipleuron vertical, not visible throughout or only slightly visible in dorsal view near apex; elytral dorsal surface with one or two longitudinal carinae, from base to near apex (when present, innermost usually less distinct and often ending after middle; never fused distally); femora pedunculate-clavate; metatarsomere I from about as long to distinctly longer than II–V together; last abdominal segment gradually, uniformly narrowed toward apex (lateral margins somewhat rounded in some species), with outer angles spiniform.

Remarks. Piriana differs from Carterica by the elytra not distinctly widened (distinctly widened in Carterica ), epipleuron not gradually oblique or visible in dorsal view (gradually oblique and distinctly visible in Carterica ), and by the last abdominal segment in female gradually, uniformly narrowed ( Fig. 29 ) rather than tubuliform as in Carterica (Fig. 9).

Sparna bosqi Gilmour, 1954 (currently, in the synonymy of Carterica soror Belon, 1896 ) and Sparna migsominea Gilmour, 1950 are only provisionally included in this genus (especially the latter) because it is not possible, using only the original descriptions and photographs of the holotypes, to correctly characterize generically important diagnostic features for them.

Based on their characters it is probable that both Lepturges flaviceps Bates, 1863 ( Figs 24–27 ) (currently, Pseudosparna flaviceps ), and Pseudosparna tucurui Monné & Monné, 2014 (see photograph at Bezark 2017), currently placed in Acanthocinini , belong to Piriana . At least regarding Pseudosparna flaviceps , there is no difference in the head allowing us to separate it from other described species currently placed in Carterica . However, until the tribes Acanthocinini and Colobotheini are studied and more clearly defined (a major task) it is not possible to place these species, or even some genera, satisfactorily.

Species included: Piriana cincticornis ( Bates, 1865) , comb. nov., from Carterica (see photograph of a male syntype at Bezark 2017); P. mima ( Belon, 1903) , comb. nov., from Carterica (see photograph of a syntype at Bezark 2017); P. pygmaea ( Bates, 1881) , comb. nov., from Carterica (see photograph of the holotype at Bezark 2017); P. tricuspis ( Belon, 1903) , comb. nov., from Carterica (see photograph of a syntype at Bezark 2017); P. bosqi ( Gilmour, 1954) , comb. nov., revalidated from the synonym of Carterica soror ( Figs 18–19 ); P. migsominea ( Gilmour, 1950) , comb. nov., from Sparna ( Figs 22–23 ); P. nearnsi sp. nov. ( Figs 36–39 ); P. birai sp. nov. ( Figs 28–31 ); P. svachai sp. nov. ( Figs 40–43 ); P. consimilis sp. nov. ( Figs 32–35 ).

Figures

FIGURES 28–35. 28–31, Piriana birai, sp. nov.; holotype female: 28, dorsal habitus; 29, ventral habitus; 30, lateral habitus; 31, head, frontal view. 32–35, Piriana consimilis, sp. nov., holotype male: 32, dorsal habitus; 33, ventral habitus; 34, lateral habitus; 35, head, frontal view.

FIGURES 18–27. 18–19, Sparna bosqi, holotype male:18, dorsal habitus (photograph by Laura Trinogga); 19, dorsal habitus, drawing by Gilmour (1954). 20, Carterica soror, holotype, dorsal habitus (from Bezark 2017). 21, Carterica soror, male (from Monné & Monné 2008). 22–23, Sparna migsominea, holotype male: 22, dorsal habitus (photograph by Laura Trinogga); 23, dorsal habitus, drawing by Gilmour (1950). 24–27, Pseudosparna flaviceps, male: 24, head, frontal view; 25, lateral habitus; 26, dorsal habitus; 27, ventral habitus.

FIGURES36–43. 36–39, Piriana nearnsi, sp. nov., holotype female:36, dorsal habitus; 37, ventral habitus; 38, lateral habitus; 39, head, frontal view. 40–43, Piriana svachai, sp. nov., holotype female: 40, dorsal habitus; 41, ventral habitus; 42, lateral habitus; 43, head, frontal view.