Embates todillofasciatus Prena, 2005

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

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https://doi.org/ 10.11646/zootaxa.1100.1.1

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scientific name

Embates todillofasciatus Prena

sp. n.

30. Embates todillofasciatus Prena   sp. n.

(Fig. 114–116, 257)

Holotype male (dissected), Costa Rica , labeled: “ COSTA RICA, Prov. Alajuela, A.C.A./ San Ramón, Reserva Biol Alberto/ Brenes, Rio San Lorencito. 850m. / 19–26 MAR 1999. R. A. Zuñiga. / Manual (red libre) #52478”, INB0003025806 ( INBC).  

Paratypes 12 (7 males, 5 females), labeled: “ COSTA RICA. Prov. San José,/ Cascajal, P.N.B.C., E. Zurquí,/ 0.500Km antes Túnel Zurquí, 1500m./ OCT 1990 – ABR 1991. G. Maass. / Intersección. L_N_535200_226800”, INB0003162434 ( INBC)   ; “ COSTA RICA / F NEVERMANN”, “TURRIALBA/ 800 M/ SLG. SCHILD” ( NMNH)   ; “ COSTA RICA, Prov. Cartago:/ P.N. Tapantí, Quebr. Segunda,/ 1200m, 9° 46' N 83° 47' W ”, “3.­ 5.5.2004 / leg. J. Prena ” ( JPPC) GoogleMaps   ; “ COSTA RICA, Puntarenas Prov. / Monteverde / 26 March 1987 / W.E. Steiner” ( NMNH)   ; “ R. San Lorenzo, 1050m,/ R.F. Cord. Guanacaste / (Tenorio), Prov. Guan. / COSTA RICA. C./ Alvarado , Jun 1991,/ L­N­287800, 427600”, CRI000 602011 ( INBC)   ; “ Costa Rica, HEREDIA: 5/ km N San Isidro, Cerro / Zurquí , 1800 m, 26.2.2000,/ leg. Prena ” ( JPPC)   , same label except 1.4.2000 ( JPPC)   ; “ COSTA RICA: Prov   .

Heredia :/ 16km SSE La Virgen, 1050–/ 1150m, 10°16'N 84°05'W / 10.–14.III.2001 / INBio­OET­ALAS transect”; “handcollecting/ leg. J. Prena ”, INB0003209858 ( JPPC) GoogleMaps   , same label except 10.–14.IV.2001, INB0003209941 ( INBC)   ; “ PANAMA, Chiriqui:/ Palo Alto 1400–1600m / 10. August 1995 / leg.: F. Oedegaard ” ( FOEC)   ; “ PANAMA, Chir., Res. / For. La Fortuna , Quebra­/ da Aleman, 7­21­1995 / C.W.& L.B. O’Brien” ( CWOB)   ; “ PANAMA, Chiriquí: Res. / La Fortuna, 1100 m / 8° 44'N 82°14'W / 21.– 25.3.2001, lg. Prena” ( HPSC) GoogleMaps   .

Description. Habitus: similar to Fig. 109, total length 4.2–5.8 mm (m=5.0, n=13). Color: integument piceous, basic vestiture of brown and some light­colored scales, yellow scales condensed in narrow subapical elytral fascia, small spots at interstria 6 (Fig. 114) and dorsolateral pronotal vitta, scales light yellow ventrally. Head: frontal fovea absent, rostrum slender, subcylindrical, curved (similar to Fig. 110), costate dorsomedially, basolateral margin slightly edged, length of rostrum ♂♂ 1.23–1.37 x (m=1.29, n=8), ♀♀ 1.26– 1.34 x (m=1.31, n=5) pronotal length, length of ante­antennal portion ♂♂ 0.38–0.40 x (m=0.39, n=8), ♀♀ 0.41–0.43 x (m=0.42, n=5) total rostral length, dorsal margin of antennal scrobe reaching rostral base before eye; funicular segment 2 much longer than 1, club oblong ovate. Pronotum: length 0.89–0.99 x (m=0.95, n=13) maximum width, subconical, widest in basal third, anterior portion tubulate; disk densely and shallowly punctate. Elytra: length 1.74–1.85 x (m=1.79, n=13) width at humeri, width 1.35–1.50 x (m=1.41, n=13) maximum pronotal width, sides subparallel in basal half, then increasingly narrowed toward apex, apices rounded conjointly, preapical callus costate, striae fine, punctures moderate, interstriae flat, 9 costate. Legs: tibiae nearly straight and parallel­sided, distally with cluster of cupreous hairs, tarsal claws arcuate and separate at base. Male: apex of aedeagus broadly rounded, middle sclerotized, anterolateral portion membranous (Fig. 115), body of aedeagus short, basal third angular in lateral view, apodemes approximately 2.8 x longer than body of aedeagus, flagellum thin, shorter than apodemes, transition to curved base gradual, basal appendage moderate, fused laterally with base of flagellum, projecting beyond base (Fig. 116).

Plant association. P. glabrescens   (Prena 2), P. aequale   (Prena 1), P. tenuimucronatum   (Prena 1), P. dotanum   (Prena 1).

Distribution. Costa Rica and Panama, evergreen montane forests of Atlantic side between 800 and 1800 m (Fig. 257).

Specific epithet. The name is a compound Latin participle derived from todillus (thin) and fasciatus (striped).

Discussion. Embates todillofasciatus   is an uncommon species of the premontane forests in the Cordilleras Central and Talamanca. It belongs to the complex of slender species near E. pictipennis   , and can be recognized easily by its color­pattern (Fig. 114). The narrow transverse line of light­colored scales derives from the post­macular element of a former elytral macula. The hypothesized ancestral color­pattern can be seen in the South American E. delicatulus (Hustache)   ( Fig. 27 View FIGURES 26–33 ).


Instituto Nacional de Biodiversidad (INBio)


Smithsonian Institution, National Museum of Natural History