Lasionota (Arqueozodes) aonikenk, Cid-Arcos & Campodonico, 2020

Cid-Arcos, Mauricio & Campodonico, Juan F., 2020, Two new species of the subgenus Arqueozodes of Lasionota from Aysén Patagonian steppe Region in Chile (Coleoptera: Buprestidae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 60 (2), pp. 651-657 : 652-656

Lasionota (Arqueozodes) aonikenk sp. nov.

( Figs 7‒12 , 18, 22‒24 )

Type locality. Chile, Aysén del General Carlos Ibáñez del Campo Region, General Carrera Province, Chile Chico.

Type material. Hඈඅඈඍඒඉൾ J, ‘ Chile, Región de Aysén, Provincia General Carrera, Chile Chico, 12.XII.2018, Mauricio Cid Burmeister leg.’ ( MNNC). Pൺ*©ൺඍඒඉൾඌ: 1 J 2 ♀♀, same data as holotype ( MNNC), 1 J 1 ♀ same data as holotype ( MEUC), 9 JJ 6 ♀♀ same data as holotype ( MCTC); 2 ♀♀, ‘ Chile, Región de Aysén, Provincia General Carrera, Chile Chico, 3.II.2018, Mauricio Cid Arcos leg.’ ( MCTC); 2 JJ 2 ♀♀, ‘ Chile, Región de Aysén, Provincia General Carrera, Chile Chico, 8.XII.2019, Mauricio Cid Arcos leg.’ ( NMPC); 3 JJ 6 ♀♀, ‘ Chile, Región de Aysén, Provincia General Carrera, Chile Chico, 8.XII.2019, Mauricio Cid Arcos leg.’ ( MCTC).

Differential diagnosis. Antennae ( Fig. 18 ) serrate from antennomere IV; antennomeres V‒X wider than long ( L. (A.) sulcata and L. (A.) cidburmeisteri sp. nov. with antennomeres V‒X as long as wide). Pronotum ( Figs 7, 10 ) with pair of shallow depressions before lateral margins; lateral margins of pronotum and hypomerae ( Figs 9, 12 ) yellow except metallic blue posterior third ( L. (A.) cidburmeisteri sp. nov. with pair of depressions before lateral margin deep; L. (A.) sulcata with lateral margin of pronotum and hypomere with orangish yellow mark reaching posterior margin). Prosternum ( Figs 8, 11 ) metallic blue ( L. (A.) cidburmeisteri sp. nov. with prosternum red). Elytra ( Figs 7, 10 ) with apex not pointed and with few (1‒5) periapical teeth ( L. (A.) sulcata with apex of elytra pointed and with series of serrated preapical teeth; L. (A.) cidburmeisteri sp. nov. with apex of elytra without periapical teeth).Aedeagus ( Figs 22‒23 ) with median lobe wide ( L. (A.) sulcata with median lobe cuneiform).

Description. Holotype male, 8.9 mm length; 4.0 mm width.

Head ( Fig. 18 ) with shallow depression in interocular zone; setigerous punctuation dense and regular; pilosity dense, long, erect and golden pale. Eyes not produced, with interior margins anteriorly convergent. Antennae ( Fig. 18 ) barely surpassing anterior margin of pronotum; serrated and with sensory pits starting from antennomere IV; with moderately long sub-erect setae; antennomeres V‒X wider than long.

Thorax. Pronotum ( Figs 7, 10 ) wider than long; punctuation dense and irregular, discally coarser; pilosity golden pale, dense and sub-erect; basal half of disc with slight depression medially and with pair of shallow depressions on sides before lateral margins; lateral margins ( Figs 9, 12 ) with yellow mark in anterior two thirds reaching hypomerae; basal margin bisinuated, with produced blunt basal angles. Hypomerae ( Figs 8‒9, 11‒12 ) with punctuation dense and coarse; moderately covered with fine and erect pale white pilosity. Prosternum ( Figs 8, 11 ) metallic blue, with fine setigerous punctuation with exception of prosternal process which bears coarse punctuation and dense and decumbent pale white pilosity. Scutellum ( Figs 7, 10 ) cordiform and metallic blue.

Elytra ( Figs 7, 10 ) with sparse inconspicuous setae. Background colour bluish black. Colour predominated by four wide yellow bands reaching lateral margin of elytra; basal band reaching elytral suture after projecting towards apex; second (sub-basal) band slightly directed towards apex, not reaching elytral suture, connected to first and third bands at lateral margin of elytra; third (sub-distal) band not reaching elytral suture, slightly curved; distal band triangular, not reaching elytral suture nor apex. Elytral suture not elevated. Costae slightly developed, with coarse series of double punctures between each other. Humeral callus slightly developed.Apex with tooth not pointed and preceded by periapical teeth.

Abdomen ( Figs 8, 11 ) metallic blue, moderately punctuate; and moderately covered with decumbent pale white setae.

Aedeagus ( Figs 22‒23 ) tubular, with parameres pre-apically widened, strong longitudinal depression from base; median lobe wide; basal lobe barely narrowed by sides.

Female. Tergite VIII (i.e. last visible, Fig. 24 ) with regular conspicuous punctuation and moderately covered by simple setae; distal margin sub-straight. Tergite IX ( Fig. 24 ) distally widened, moderately covered by simple setae; distal margin sub-straight, barely notched and densely covered by setae. Ovipositor membranous, bag-type; superior distal margin slightly curved and densely covered by long setae.

Sexual dimorphism. Distal margin of last ventrite ( Figs 8, 11 ) notched in males and semicircular in females.

Intraspecific variation. Basal elytral band in some specimens connected to second band before elytral suture leaving a dark spot; second and third elytral bands connected or not connected at lateral margin of elytra; third elytral band in one specimen connected to last band before elytral suture leaving a dark spot. Sometimes dark metallic elements greenish instead of bluish. Apex of elytra with 1‒3, rarely up to 5 preapical teeth.

Measures of paratypes. Males (n = 6): 8.0‒11.9 mm length; 2.5‒4.2 mm width. Females (n = 6): 9.1‒13.7 mm length; 3.2‒5.1 mm width.

Etymology. Refers to the indigenous ethnic group of the Aónikenk, who lives in Patagonia north of the Strait of Magellan; noun in apposition.

Lasionota (Arqueozodes) sulcata ( Moore, 1997) ( Figs 13‒16 , 19, 25‒26 )

Dactylozodes sulcatus Moore, 1997: 60 (original description).

Type locality. Argentina, Río Negro Province, Avellaneda Department, Pomona.

Material examined. 1 J, ‘ Argentina, Mendoza, Malargue, Carapacho, I.82, Topotypus, Typus comparandus, T. Moore det., D. (Arqueozodes) sulcatus Moore’ ( VMDC).

Differential diagnosis. Antennae ( Fig. 19 ) serrate from antennomere IV; antennomeres V‒X as long as wide ( L. (A.) aonikenk sp. nov. with antennomeres V‒X wider than long). Pronotum ( Fig. 13 ) with pair of shallow depressions before lateral margins; lateral margins of pronotum and hypomerae ( Fig. 16 ) with orangish yellow mark reaching posterior margin ( L. (A.) cidburmeisteri sp. nov. with pair of depressions before lateral margin deep; L. (A.) aonikenk sp. nov. with yellow mark of lateral margin of pronotum and hypomere not reaching posterior margin). Prosternum ( Fig. 15 ) metallic blue ( L. (A.) cidburmeisteri sp. nov. with prosternum red). Apex of elytra ( Fig. 14 ) pointed and preceded by more than 8 serrated periapical teeth ( L. (A.) cidburmeisteri sp. nov. with apex of elytra without periapical teeth; L. (A.) aonikenk sp. nov. with apex of elytra not pointed and with few periapical teeth). Aedeagus ( Figs 25‒26 ) with median lobe cuneiform ( L. (A.) aonikenk sp. nov. with median lobe wide). Aedeagus ( Figs 25‒26 ) tubular, with parameres pre-apically widened to pre-apical fourth, strong longitudinal depression in distal third; median lobe cuneiform, margins slightly converging to extremes; basal lobe barely narrowed to base.

Figures

Figs 7‒12. Lasionota (Arqueozodes) aonikenk sp. nov. 7‒9 ‒ male: 7 ‒ dorsal view; 8 ‒ ventral view; 9 ‒ lateral view. 10‒12 ‒ female: 10 ‒ dorsal view; 11 ‒ ventral view; 12 ‒ lateral view. Scale bars = 5 mm.

Figs 17‒26. Lasionota (Arqueozodes) spp. 17‒19 ‒ head, frontal view: 17 ‒ L. (A.) cidburmeisteri sp. nov., 18 ‒ L. (A.) aonikenk sp. nov., 19 ‒ L. (A.) sulcata (Moore, 1997). 20‒21 ‒ L. (A.) cidburmeisteri sp. nov., aedeagus: 20 ‒ dorsal view; 21 ‒ ventral view.22‒23 ‒L.(A.) aonikenk sp. nov., aedeagus: 22 ‒ dorsal view; 23 ‒ ventral view. 24 ‒ L. (A.) aonikenk sp. nov., last tergites and ovipositor of female. 25‒26 ‒ L. (A.) sulcata, aedeagus: 25 ‒ dorsal view; 26 ‒ ventral view. Scale bars = 1 mm.

Figs 13‒16. Lasionota (Arqueozodes) sulcata (Moore, 1997), male. 13 ‒ dorsal view, 14 ‒ detail of apex of elytron, 15 ‒ ventral view, 16 ‒ lateral view. Scale bars 13, 15‒16 = 5 mm, 14 = 1 mm.