Embates fasciolatus (Chevrolat)

Prena, Jens, 2005, The Middle American species of Embates Chevrolat (Coleoptera: Curculionidae: Baridinae), Zootaxa 1100 (1), pp. 1-151 : 1-151

44. Embates fasciolatus (Chevrolat)

(Fig. 158, 240)

Ambates fasciolatus Chevrolat 1877: 241 . Holotype, sex not determined, Mexico, labeled: “Typus”, “Sallé” (NHRS). Champion 1907: 160 (as sp. n. in head­line, lapsus)

Ambates sexpunctatus Champion 1907: 161 . Lectotype male, here designated, Mexico, labeled: “sp. figured”, “ Type ”, “ ♂ ”, “Misantla/ Mexico / Hoege”, “ B.C.A. Col. iv.5/ Ambates / sexpunctatus/ Champ.” (BMNH). Paralectotype 1, here designated: Misantla (BMNH). New synonymy

Embates [ fasciolatus ]. Alonso­Zarazaga & Lyal 1999 (global combination of all species of Ambates Schönherr 1836 with Embates Chevrolat 1833 )

Redescription. Habitus: figured in Champion (1906–09), total length 9.1–10.1 mm (n=2). Color: integument dark brown; basic vestiture of minute, cupreous scales; scales yellow in thin, variously reduced elytral fascia (Fig. 158a, b); venter with small scales on prosternum and along flank, clustered locally. Head: frontal fovea deep, rostrum moderate, subcylindrical, sides attenuated between apex and antennal insertion, costate dorsomedially, subcostate dorsolaterally (probably not in females), basolateral margin moderately edged, length of rostrum ♂♂ 1.23–1.28 x (n=2) pronotal length, length of ante­antennal portion ♂♂ 0.32–0.34 x (n=2) total rostral length, dorsal margin of antennal scrobe reaching rostral base well before eye; funicular segment 2 distinctly longer than 1, club oblong ovate. Pronotum: length 0.88–0.89 x (n=2) maximum width, widest in basal fourth, then roundly narrowed, anterior portion tubulate; disk finely punctate, intervals rugose. Elytra: length 1.75–1.88 x (n=2) width at humeri, width 1.25–1.36 x (n=2) maximum pronotal width, sides subparallel in basal half, apices rounded conjointly, preapical callus weakly developed, striae fine, punctures distinct, interstriae flat, 9 convex. Legs: slender, tibia nearly straight, ventral margin with distal cluster of cupreous hairs, tarsal claws arcuate and separate at base. Male: aedeagus as E. obliquus .

Plant association. Not known.

Distribution. Southern Mexico, Atlantic side, west of Isthmus of Tehuantepec (Fig. 240).

Material examined. MEXICO. Veracruz: Catemaco ( CNCI, NMNH) ; Sontecomapan ( BMNH) ; Misantla ( BMNH 2 ) . Oaxaca: San Mateo Yetla ( CWOB) . Total 6 specimens .

Discussion. The thin elytral fascia is derived from a previous ante­macular element. It is variously reduced in the specimens from Yetla and Misantla. Champion described the latter form as a distinct species, E. sexpunctatus . He recognized its close relationship with E. fasciolatus , and included E. obliquus in this group. However, the elytral fascia of the latter is derived from a previous post­macular element, and the species has different tarsal claws. Embates obliquus is related more closely to E. heilipoides .