Embates chelys Prena, 2005

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

36. Embates chelys Prena sp. n.

(Fig. 136–138, 259)

Ambates sp. 13. Marquis 1991: 200

Holotype male (dissected), Costa Rica, labeled: “Sector Cerro Cocori, Fca./ de E. Rojas, 150m, Prov./ Limon, COSTA RICA, E. Rojas / Abr 1991,/ L­N­286000, 567500”, CRI000 688348 ( INBC).

Paratypes 133 (91 males, 42 females), Costa Rica and Panama, labeled: same label as holotype except: CRI000 688352, CRI000 688355, CRI000 688511, CRI000 688516, CRI000 688525; Jul 1991: CRI000 597103, CRI000 597012, CRI000 597017; CRI000 597261; Set 1991, CRI000 558745; Oct 1991: CRI000 462279, CRI000 488722; Nov 1991: CRI000 566675, CRI000 566677, CRI000 566683, CRI000 566684, CRI000 566689, CRI000 566702; Oct 1992: CRI000 923947–48, CRI000 934855, CRI000 934857; 9 a 30 nov 1992: CRI000 862353, CRI000 862370, CRI000 862372 ( INBC 26 ); “ Sector San Ramón, Prov. Alaju, COSTA/ RICA, 620m. 13–28 Mar 1994. D. García,/ L N 318100_381900 #2766”, CRI001 738754 ( INBC); “ COSTA RICA, Alajuela: R. B./ A. Brenes, Rio San Lorencito,/ 900m, 10°13'N 84°39'W,/ 4–6.iv.2003, leg. J. Prena ” ( JPPC); “Alajuela/ Upala , Dos Rios / Orilla R. Cucaracho / 400m 31 marz 1986/ Gonzalez , Soto / Quiros ” ( MUCR); “ COSTA RICA, Pr. Heredia/ Puerto Viejo / Finca La Selva ”, “ R.J. Marquis coll./ No. 1018 11­VI 1982 ”; same label except: No. 387, 7­V 1981; No. 476, 10­IX 1981; No. 810, 7­II 1982; No. 984, 30­V 1982; No. 1018, 11­VI 1982; No. 1047, 23­VI 1982; No. 1068, 4­VII 1982; No. 1103, 9­VIII 1982; No. 1268, 17­XI 1982; No. 1280, 20­ XII 1982 ( NMNH 11 ); “ COSTA RICA, Pr. Heredia/ Pto . Viejo­La Selva B.S./ No. 703 28­ XI 1981 / R.J. Marquis coll.”; same label except: No. 78, 19­VIII 1981; No. 137, 1­XI 1980; No. 233, 6­III 1981; No. 277, 29­III 1981; No. 315, 11­IV 1981; No. 545, 10­X 1981; No. 678, 30­VI 1979; No. 780, 26­I 1982; No. 810, 7­II 1982 ( NMNH 10 ); “ COSTA RICA, La / Selva , 1­V 1989 / on Piper cenoclada/ D. Letourneau ” ( CWOB 2 ); “ COSTA RICA: Prov./ Heredia, F. La Selva / 3 km S Pto. Viejo / 10°26'N 84°01'W ”, “ 4 V 1980 / H.A. Hespenheide ” ( CHAH); “ COSTA RICA, Heredia:/ La Selva Biol. Sta ./ 3 km S Pto. Viejo, 100m / 20°26'N 84°01'W ”, “ 20.II.2000 / leg. J. Prena ” ( JPPC 8 , TAMU), same label except 7.IV.2001 ( JPPC 2 ); “ COSTA RICA: Prov. Heredia:/ 11km ESE La Virgen, 250­/ 350m, 10°21'N 84°03'W / leg. J. Prena, 6.– 11.4.2004 / INBio­OET­ALAS transect” ( INBC 6 , JPPC 3 , SNSD), same label except 12.– 18.4.2004 ( JPPC 2 ); “ COSTA RICA, Prov. Heredia:/ 16km SSE La Virgen, 1050–/ 1150m. 10°16'N 84°05'W / 10.–14.III.2001 / INBio­OET­ALAS transect”, INB0003209859–62 ( JPPC 4 ); same label except line 4: “ Prena , 3.III.2000 ”, without code ( JPPC 3 ); “ COSTA RICA: Prov. Heredia:/ 13km SE La Virgen, 650–/ 750m, 10°18'N 84°05'W / 22.2.2003 / INBio­OET­ALAS transect”, “handcollecting/ leg. Jens Prena ”, INB0003229863–64 ( JPPC 2 ); “ COSTA RICA: Prov. Heredia:/ 12km SE La Virgen, 550–/ 650m, 10°19'N 84°05'W / 22.2.2003 / INBio­OET­ ALAS transect”, “handcollecting/ leg. Jens Prena ”, INB0003229850 ( JPPC); same label except line 4: “ Prena , 15.III.2001 ”, INB0003210002–03 ( INBC, JPPC), without code ( JPPC); “ COSTA RICA: Prov. Heredia:/ 11km SE La Virgen, 450–/ 550m, 10°20'N 84°04'W / 12.4.2003 / INBio­OET­ALAS transect”, “handcollecting/ leg. Jens Prena ”, INB0003230138–39 ( JPPC 2 ); “ COSTA RICA: Prov. Heredia:/ 10km SE La Virgen, 450– / 550m, 10°20'N 84°05'W / 17.– 23.2.2003 / INBio­OET­ALAS transect”, “handcollecting/ leg. Jens Prena ”, INB0003229776–83 ( JPPC 8 ); same label except 11.– 16.3.2003, INB0003229879–84, INB0003229933 ( INBC 5 , JPPC 2 ); 8.– 13.4.2003, INB0003230076 ( JPPC); “Est. Magsasay, 200 m, P.N./ Braulio Carrillo, Prov. Here.,/ COSTA RICA. Jul 1991. A./ Fernández. L­N­264600, 5321000”, CRI001 337866 ( INBC); “Est. Magsasay, 200 m, P.N./ Braulio Carrillo, Prov. Here.,/ COSTA RICA. May 1991. M.A./ Zumbado. L­ N­264600, 531000”, CRI001 311157 ( INBC); “Est. El Ceibo Braulio/ Carrillo, N.P. Heredia, Pr./ COSTA RICA. 400–600m./ Oct 1989, R. Aguilar &/ M. Zumbado 527700,/ 256500”, CRI000 077801 ( INBC); “Est. Pitilla, 700m, 9km S/ Sta . Cecilia, P.N. Guana­/ caste, Prov. Guanacaste,/ Costa Rica, 22 set a 14/ oct 1992, C. Moraga,/ L­N 330200, 380200”, CRI000 824449 ( INBC); “Est. Pitilla, 700m, 9km S/ Sta . Cecilia, Prov. Guan./ COSTA RICA. C. Moraga / & P. Rios, Mar 1991,/ L­N­330200, 380200”, CRI000 341960 ( INBC); “Estac. Pitilla, 700m, 9km S/ Santa Cecilia, Guanacaste/ COSTA RICA. Mar 1990 / P. Rios, C. Moraga &/ R. Blanco, 330200­380200”, CRI000 212035 ( INBC); “Est. Pitilla, 700m, 9km S/ Sta . Cecilia, P.N. Guana­/ caste, Prov. Guan. COSTA/ RICA. P. Rios, Ago 1991 / L­N­330200, 380200”, CRI000 608171 ( INBC); “Estación Pitilla, 9 km S. Sta . Cecilia, Prov./ Guana. COSTA RICA. 700m. Abr 1994. C./ Moraga, L N 330200_380200 #2841”, CRI001 789830 ( INBC); “Est. Pitilla, 700m, 9km S/ Sta . Cecilia, P.N. Guana­/ caste, Prov. Guanacaste,/ Costa Rica, 24 ago a 11/ set 1992, P. Rios / L­N 330200, 380200”, CRI000 845872 ( INBC); “Est. Pitilla, 700m, 9km S/ Sta . Cecilia, P.N. Guana­/ caste, Prov. Guana. COSTA/ RICA, C. Moraga, 4–25/ Nov 1991./ L­N 330200, 380200”, CRI000 657699 ( INBC); “Est. Pitilla, 700m, 9km S/ Sta . Cecilia, P.N. Guana­/ caste, Prov. Guana. COSTA/ RICA, C. Moraga, Jul 1991 / L­N­330200, 380200”, 2 specimens on same pin, CRI000 505846 ( INBC 2 ); “ Costa Rica, Pr. Guanacaste/ Est. Pitilla, 9km S Sta. Cecilia / 700m, P.N. Guanacaste/ 6– 12.3.1996 leg. Prena ” ( JPPC); “ COSTA RICA, Limón/ 16 km W. Guápiles / 400m, IV­V 1989/ col. Paul Hanson ”, CRI001 108306 ( INBC); “ Rio Sardinas , R.N. F.S. Barra del Colorado,/ Prov. Limón, COSTA RICA. 10m. 10–12/ Nov 1993. F. Araya,/ L N 291500_564700 #2446”, CRI001 170189 ( INBC); “Est. Hitoy Cerere, 100m, R. Cerere, Res. Biol. Hitoy/ Cerere, Prov. Limon,/ COSTA RICA, G. Garballo / 7–26 Ene 1992,/ L­N­184200, 643300”, CRI000 870757 ( INBC); “ PANAMA: CHIRIQUI / La Fortuna, Hydrologica/ trail, 1150m, 23.V.­9.VI./ 1995, J.S. Ashe &/ R. Brooks, ex: f.i.t. (156)” ( CMNC 2 ); “ PANAMA: CHIRIQUI / La Fortuna, Hydrological/ Trail, 1150m, 21.V.­ 23.V.1995 / J.S. & A.K. Ashe, #051/ ex F.I.T.” ( CMNC); “ PANAMA: CHIRIQUI / Bocas del Toro Border/ La Fortuna, 0.6km / Contin. divide trail 1150m / 9–12.VI.1995 / J. Ashe &/ R. Brooks, ex: f.i.t. (186)” ( CMNC); “ PANAMA: CHIRIQUI / La Fortuna, 0.5km N./ Contin. divide trail 1080m / 21–23.V.1995, J.S. & A.K./ Ashe, ex: f.i.t. (043)” ( CMNC, HPSC,

JPPC); “ PANAMA: CHIRIQUI / Bocas del Toro Border / La Fortuna, 0.5km N./ Contin. divide trail, 1100m / 23.V­9.VI.1995, J. Ashe &/ R. Brooks, ex: f.i.t. (156)” ( JPPC 2 ); “ PANAMA, Chiriquí: Res./ La Fortuna , 1100 m,/ 8° 44'N 82°14'W,/ 21.– 25.3.2001, lg. Prena” ( JPPC) .

Description. Habitus: total length 4.1–5.8 mm (m=5.1, n=92). Color: integument piceous, legs and antenna rufous; basic vestiture moderately dense, cupreous, dorsolateral pronotal vitta of cupreous scales moderately broad, ill­defined, elytral vestiture complex: black macula framed by lyre­shaped fascia of beige scales, beige scales in elongate marking in interstria 3, inner striae lined with cupreous scales ("strings of lyre"), indistinct fascia of white scales between metepisternum and subapical callus (Fig. 136); venter with white scales on prosternum and along flank. Head: frontal fovea absent, rostrum moderate, subcylindrical (Fig. 137), apex slightly expanded laterally, costate dorsomedially, subcostate dorsolaterally, basolateral margin edged, length of rostrum ♂♂ 1.02–1.15 x (m=1.09, n=59), ♀♀ 1.04–1.20 x (m=1.12, n=33) pronotal length, length of ante­antennal portion ♂♂ 0.32–0.36 x (m=0.34, n=58), ♀♀ 0.34–0.40 x (m=0.36, n=32) total rostral length, dorsal margin of antennal scrobe reaching rostral base before eye; length of funicular segments 1 and 2 subequal, club oblong ovate. Pronotum: length 0.94–1.07 x (m=0.99, n=92) maximum width, sides subparallel to slightly rounded in basal third, anterior portion tubulate; disk densely punctate, intervals granulose, subcostate dorsomedially. Elytra: length 1.56–1.67 x (m=1.63, n=88) width at humeri, width 1.34–1.48 x (m=1.41, n=90) maximum pronotal width, sides subparallel in basal half, apices rounded conjointly, preapical callus developed, striae fine, punctures indistinct, interstriae flat, 7 and 9 costate, 5 costate at subapical callus. Legs: slender, tibia slightly curved and parallel­sided, ventral margin with distal cluster of cupreous hairs, tarsal claws curved and separate at base. Male: apex of aedeagus round, anterolateral portion membranous (similar to Fig. 147), body of aedeagus of moderate length, basal third slightly angular in lateral view, apodemes 2.5 x longer than body of aedeagus, flagellum thin, nearly as long as aedeagus including apodemes, transition to curved base gradual, basal appendage elongate, fused distally with base of flagellum, projecting beyond base (Fig. 138a); specimens from La Fortuna with anterolateral portion of aedeagus sclerotized, median portion membranous, basal appendage of flagellum curved, pointed (Fig. 138b).

Plant association. Species of Piper with the shoot­apex emerging from within the leafbase at flowering nodes: P. cenocladum (Marquis 13, Prena 24, Letourneau 2), P. imperiale (Marquis 3, Prena 1), Piper sp. nr. melanocladum (Prena 4), P. biseriatum (Marquis 2, Prena 1), P. melanocladum (Marquis 1, Prena 1), P. obliquum (Prena 1), P. sinugaudens (Marquis 1).

Rearing records. Stem of P. cenocladum (Letourneau 1).

Distribution. Costa Rica and Panama, Atlantic side (Fig. 259).

Specific epithet. The name is a Greek noun for lyre.

Discussion. Embates chelys is one of the more common species in Atlantic Costa Rica. The specimens from La Fortuna, Panama are included under this name, despite deviations in details of the male genitalia. I observed that Piper cenocladum is the primary host plant everywhere. Embates sagittifolicus is a very similar but distinct species from the Pacific side of the Cordillera de Talamanca, and is associated with Piper sagittifolium .