Zabrotes maesi Romero and Johnson

Romero, Jesús & Johnson, Clarence Dan, 2004, Zabrotes maesi, A New Species from Nicaragua with New Distribution Records for other Bruchids (Coleoptera: Bruchidae: Amblycerinae), The Coleopterists Bulletin 58 (3), pp. 379-387 : 380-381

Zabrotes maesi Romero and Johnson , new species

Description. Male. Integument Color. Body black, except antennal segments 1–2, apical portion of labrum, and calcaria yellowish.

Vestiture. Head clothed with whitish pubescence, except for a spot of darker hairs on vertex; pronotum with median lobe with pale hairs, remainder of pronotum with minute brown and yellowish spots, without particular pattern; scutellum whitish; base of elytron with minute brown spots on intervals 2, 4, 6, and humerus, remainder obscure and brown intermixed with small brown and pale maculations, with a sinuous transversal whitish band; pygidium yellowish without a median longitudinal stripe; mesepimeron, metathorax and metepisternum white, metacoxa with intermixed yellowish and brown hairs; abdomen clothed with yellowish pubescence ( Figs. 1 , 2 ).

Structure. Head. Vertex and frons finely punctured, with median frontal impunctate carina; ocular sinus 0.75 to 0.80 length of width of eye; antennal segment one 1.5 to 1.87 times as long as segment two, segment eleven 2.0 to 2.3 times as long as segment one. Antenna extending to 1.07 to 1.12 of length of body; ocular index 2.0 to 2.08.

Prothorax. Pronotum semicircular, slightly bulky mesally, micropunctured with foveolae on lateral areas.

Mesothorax and Metathorax. Scutellum triangular and minute. Elytron uniformly micropunctured, without foveolae, 1.84 to 1.87 times longer than wide; striae deep, strial punctures clear, principally on basal portion; stria six straight at base. Metasternum micropunctured and foveolate, with a shallow fossa and thin longitudinal sulcus. Metepisternum finely micropunctured and foveolate. Metacoxal surface foveolate and setose on 0.42 to 0.62 of its lateral surface and length of posterior border, remaining 0.42 to 0.62 impunctate and shining. Metatibia with ventral and lateral carina; mucro of first metatarsal segment 0.10 to 0.15 as long as metatarsus.

Abdomen. Sterna 1–5 finely micropunctured and foveolate, each sternum with a small, black and strong seta; sternum five emarginated at apex; pygidium micropunctured and foveolate.

Length (pronotum-elytra) 1.85–2.0 mm; width 1.37–1.5 mm; maximum thoracic depth 1.0– 1.15 mm.

Genitalia. Median lobe with lateral margins parallel, except basal portion wider; ventral valve subcampaniform, with small pores on apical portion; dorsal valve wider at base, sides concave, narrowing to acuminate apex; armature of internal sac with a median horseshoe-shaped sclerite, surrounded by numerous strong spines ( Fig. 3). Lateral lobes 0.61 as long as median lobe, cleft to 0.05 their length, setae at apices moderately elongate ( Fig. 4 ).

Female. Unknown.

Host Plants. Unknown.

Type Series. Male Holotype: NICARAGUA. San Joaquín #1, Volcán Mombacho , Granada, 31-III-1998, J. M. Maes collector, Malaise trap. Paratypes: 1 # Santa Ana #2, Volcán Mombacho, Granada, 30-VI-1998, J. M. Maes collector, Malaise trap; 1 # Santa Ana #1, Volcán Mombacho, Granada, 15-IV-1998, J. M. Maes collector, Malaise trap; 1 # San Joaquín #1, Volcán Mombacho, Granada, 15-IV-1998, J. M. Maes collector, Malaise trap .

Holotype and one paratype deposited in Colección Entomológica del Instituto de Fitosanidad , Colegio de Postgraduados, Mexico . Paratypes also deposited in the following collections: U.S. National Museum of Natural History , Washington , D.C., and the C. D. Johnson collection, Northern Arizona University, Flagstaff, Arizona.

Etymology. This species is named in honor of J. M. Maes, diligent collector of the insect fauna of Nicaragua, the types series of Z. maesi and other insects used in this study.

Figures

Fig. 1. Dorsal aspect of Zabrotes maesi.

Fig. 2. Lateral aspect of Zabrotes maesi.

Fig. 4. Ventral view of Lateral lobes, basal piece, and tegminal strut of Zabrotes maesi.