Narberdia dugesi Soto-Hernández, 2017

Soto-Hernández, Macotulio, 2017, New species of Narberdia Burke from México and Central America (Coleoptera: Curculionidae), Zootaxa 4263 (1), pp. 139-152 : 143-145

Narberdia dugesi Soto-Hernández , new species

Figures 3, 4 , 12, 13, 14

Diagnosis. This species can be recognized by funicular segment 1 longer than 2, segment 2 as long as next two segments combined; profemoral tooth large, wider than long; mesocoxae separated by distance about 1/4 width of coxa and upper edge of eyes slightly separated from head.

Description. Male. Body oblong—oval, length 4.3—4.8 mm, width 2.1—2.3 mm. Rostrum robust slightly curved and slender, about 1.6x longer than pronotum along dorsal midline; median area of rostrum evenly with pallid ochreous scales, remainder of scales of rostrum brown. Antennal scape attached beyond midpoint of rostrum, longer than funicular segments and club combined, funicular segment 1 slightly enlarged, longer than 2, segment 2 as long as next two segments combined and segments 3—7 progressively shorter toward club. Club compact, as long as preceding four funicular segments combined, densely clothed by hair—like scales. Head clothed with decumbent broad, truncate scales. Eyes convex with upper edge slightly separated from head, semierect ochreous scales on interocular region, wider and more pallid than those on head. Prothorax about 1.4x wider than long, sides rounded in dorsal view, strongly narrowed in front and anterolateral margin sinuate; clothed with mixture of broad, oval, elongate, decumbent, semierect scales; dorsal scales usually brown, intermixed with some ochreous scales, scales broader and striate laterally. Scutellum convex, oval, clothed with imbricate ochreous scales. Elytra convex in lateral view; wider than prothorax; basal margin slightly sinuate; parallel—sided to past middle then progressively rounded to apices; clothed with dense brown scales, intermixed with ochreous scales. Elytral intervals each with a row of elongate, semierect scales; intervals 3, 5, 6 and 9 slightly wider than other intervals; interval 6 on basal 1/5 with a longitudinal vitta of ochreous scales; humeri rounded. Ventrites clothed with evenly ochreous scales, broader and more striate than those on elytra. Mesocoxae narrowly separated by distance about ¼ width of coxa. Abdomen clothed with dense truncate scales, gradually narrower along ventral midline; ventrite 2 longer than 1. Legs clothed with broad and truncate ochreous scales, gradually narrower, long toward apex; profemoral tooth triangular in shape and acute, wider than long; tibiae without a tooth near mucro; protibia with inner margin slightly expanded; metatibial mucro oblique, as long as tarsal claw, slightly curved toward tarsus. Tarsal claws with basal tooth distinctly shorter than claw. Male median lobe as in figures 12 and 13.

Female. Body length 5.0— 5.5 mm, width 2.2—2.4 mm. Rostrum slender and curved, about 2.2—2.4x longer than pronotum along dorsal middle; antennal scape attached at the middle point of rostrum; pro— and mesotibiae with an acute tooth near mucro, metamucro oblique, acute, smaller than tarsal claw. Spermatheca as in figure 14.

Host plants. Adults of N. dugesi emerged from seeds of Bernardia mexicana (Hook. & Arn) Müll. Arg. , collected in Parque El Cimatario, Querétaro.

Material examined. 40 females and 51 males. Holotype male ( CNIN), labelled México, Querétaro, Parque El Cimatario , 2228 m, 20°31´29´´N, 100°21´35´´22, III.2012, M. Soto, in seeds of Bernardia mexicana (Euphorbiaceae) .

Paratypes. Querétaro. Cerro El Ermitaño, 19.VII.2000, J.L. Cozar, on Tillandsia recurvata (Bromeliaceae) (1 female, 3 males; UAQE) . Cerro El Ermitaño , 2228 m, 20°28´50´´N, 100°21‵35‵‵W, 21.III.2012. M. Soto, in seeds of Bernardia mexicana (Euphorbiaceae) (25 females, 27 males; CNIN, UAQE, CMNC) . Querétaro 2 km S. side, 1850 m, 02.VIII.1999, thorn forest, R. W. Jones, on Bernardia mexicana (3 females, 2 males; UAQE) . Cerro El Ermitaño , 20.IX.1997, C.E. 4—16, C.E. 4—15, C.E., J.L. Cozar (1 female, 4 males; UAQE) . Cerro El Ermitaño , 1850m, 20°34‵30‵‵N, 100°21‵20‵‵W, 27.VI.2000, R. Jones, on flowers of Bernardia mexicana (5 females, 8 males). El Tangano, 20°33‵28‵‵N, 100°21‵79‵‵W, 10.III.2010, M. Soto, on Tillandsia recurvata (Bromeliaceae) and Bernadia mexicana (2 females, 3 males; CMNC, UAQE) ; Huimilpan 5 km. S. side, Querétaro, 1900 m, 6.III.1999, thorn forest, R. Jones, on Bernardia mexicana (1 female; UAQE) ; Michoacán, Penjamillo , 20°06‵14‵‵N, 101°56‵56‵‵W, 19.IV.2012, M. Soto, on Tilandsia sp. and Bernardia albida (2 females, 3 males; IEXA) .

Etymology. This species in named in honor to Eugene Romain Delsescautz Dugés (1833—1895) in recognition to his contributions to the knowledge of Mexican Entomology.

Remarks. Adult weevils were collected on two species of Bernardia : B. mexicana and B. albida . These specimens differ only in the form of the profemoral tooth. Specimens from B. albida have the tooth with a slightly deep anteromarginal emargination and slightly curved toward the tibia. Narberdia dugesi appears to be most closely related to N. cervantae . Differences are presented under remarks of N. cervantae . Narberdia ramuvei Soto-Hernández , new species

Figures 7 , 15, 16, 17

Diagnosis. This species can be recognized by the profemoral tooth large, triangular in shape, longer than wide; rostrum slightly curved; upper edge of eyes slightly separated from head; antennal scape longer than length of funicular segments and club combined.

Description. Female. Body oblong-robust, length 3.6—4.6 mm, width 1.8—2.0mm. Rostrum robust, slightly curved, ca 2.2x longer than length pronotum along dorsal midline; middle area of rostrum evenly with pallid ochreous scales, remainder of rostrum with brown scales. Antennal scape slender, apex moderately enlarged, longer than funicular segments and club combined; funicular segment 1 clavate, longer and more clavate than 2, segment 2 as long as 3 and 4 combined, segments 3—7 progressively smaller and more clavate toward club, about 1.4x longer than width. Club compact, as long as preceding four funicular segments combined, clothed with hairlike scales. Head clothed with oval, truncate scales, narrower than those on rostrum. Eyes convex, rounded with semierect ochreous scales on interocular region, wider and more pallid than those on head. Prothorax about 1.3x wider than long, sides rounded in dorsal view strongly narrowed in front, anterolateral margin sinuate; clothed with broad, oval scales intermixed with elongate, semierect scales; dorsal scales generally brown, intermixed with some ochreous scales, broader and striate laterally. Scutellum convex, elongate-oval, clothed with imbricate ochreous scales. Elytra broader than prothorax, basal margin slightly sinuate, parallel—sided to past middle then progressively rounded to apices; clothed with brown scales intermixed with irregulars patterns of ochreous scales, elytral intervals 3, 5 and 8 wider than other intervals. Ventrites clothed more or less evenly with ochreous scales. Mesocoxae separated by distance about 1/3 width of coxa. Abdomen clothed with dense truncate scales, gradually narrower along ventral middle; ventrite 1 as long as 2. Legs clothed narrow, truncate scales, narrower and long toward the apex; profemoral tooth acute, triangular in shape, longer than wide; tibiae almost straight, pro— and mesotibiae bearing well developed tooth near mucro; metatibial mucro small, oblique, slightly curved toward tarsus. Tarsal claws with basal tooth distinctly shorter than claw. Spermatheca as in figure 17.

Male. Body robust, length 4.9 mm, width 2.4 mm. Rostrum about 1.5x longer than length pronotum along dorsal middle. Antenna attached just after middle point. Pro— and mesotibiae without an acute tooth near mucro; metatibial mucro long, strongly curved toward tarsus as hook—like form, longer than in famale; male median lobe as in figures 15 and 16.

Host plant. Five specimens of N. ramuvei were found in seeds from herbarium (MEXU) specimens of B. rzedowskii A. Cerv. & Flores Olv., B. valdesii A. Cerv. & Flores Olv. and B. changii A. Cerv. & Flores Olv., the wild plants were collected in Durango, Jalisco and Puebla, México. All of them are closely related to each other and all are native to México ( Cervantes 2006).

Material examined. 3 females, 2 males. Holotype female ( CNIN), labelled México, Durango, El Mezquital. 4.8 km al E. de El Mezquital, 1590 m, 23°27‵20.1‵‵N, 104°22‵16.7‵‵W. 19.VII.2003, A. Cervantes, in sedes of Bernardia rzedowskii ( MEXU 291 ).

Paratypes. Data as for holotype (1 female 1 male; UAQE). Jalisco, Tuxcacuesco, Cerro del Palacio , 21.VI.2002, A. Cervantes, in seeds of Bernardia valdesii ( MEXU 276 ) (1 female; IEXA) . Puebla, Zapotitlán, 4 km to E. side, San Francisco Xochiltepec , 30.VI.1986, in seeds of Bernardia chiangii, Chang 2406 ( MEXU) (1 male; UAQE) .

Etymology. The specific epithet is an acronym of the Mexican Entomologist Raúl Muñíz Vélez † (1930—2008), who made important contributions to the knowledge of Mexican Curculionidae .

Remarks. Two males were collected from herbarium specimens of B. changii and B. rzedowskii , but the material lacked some parts of legs and antennae and was not added to the type series. This species appears to be most closely related to N. cervantae and N. dugesi , but it is distinguished by having the rostrum more robust; profemoral tooth acute, triangular in shape, longer than wide; tibia almost straight, mesocoxae separate by 1/3 width of coxa; male median lobe broad, sides slightly rounded from base to apical 3/4, strongly narrowed subapically, slightly expanded at apex, arrowhead—like.

Figures

FIGURES 3 — 4. Narberdia species, habitus, lateral views, scale bars 0.5 mm. 3) N. dugesi, male; 4) N. dugesi, female.

FIGURES 9 — 14. Male median lobe and spermatheca in Narberdia species. Male median lobe strongly narrowed near apex: 9 — 11) N. cervantae; and 12 — 14) N. dugesi.

FIGURES 7 — 8. Narberdia species, habitus, lateral views, scale bars 0.5 mm. 7) N. ramuvei, female; and 8) N. aridulus, female.

FIGURES 15 — 20. Male median lobe and spermatheca in Narberdia species. 15 — 17) N. ramuvei with male median lobe strongly narrowed near apex; and 18 — 20) N. sarukhani with male median lobe broad and rounded apically.