Oxychalepus elongatus ( Chapuis 1877 )

Staines, C. L., 2010, A review of the genus Oxychalepus Uhmann, 1937 (Coleoptera: Chrysomelidae: Cassidinae), Zootaxa 2573 (1), pp. 35-56 : 44-45

Oxychalepus elongatus ( Chapuis 1877)

( Figure 7 )

Odontota elongata Chapuis 1877: 20 [Syntype (♀): Brazil, Bahia (INSB)]. Uhmann 1965: 258 (types).

Chalepus elongatus (Chapuis) . Donckier 1899:587 (catalog).

Chalepus (Xenochalepus) normalis elongata (Chapuis) . Weise 1911a: 50 (transfer), 1911b: 27 (catalog), 1911c: 39 (catalog); Uhmann 1938b: 439 (as synonym of Oxychalepus posticatus ).

Chalepus normalis elongatus (Chapuis) . Blackwelder 1946: 727 (faunal list).

Oxychalepus normalis elongatus (Chapuis) . Papp 1953: 85 (catalog).

Oxychalepus elongatus (Chapuis) . Ramos 1998: 310 ( Brazil species).

Description. Elongate; parallel-sided; head vertex black with anterior ⅓ reddish; pronotum orange with 3 black vittae; elytra orange with apical ¼ black, sutural vitta and scutellar spot black; venter black with orangish markings; legs black with base of femora orange. Head: vertex with deep medial sulcus; frontal carina straight; clypeus with irregular small elevations; frons punctate, not projecting. Antenna: antennomeres laterally compressed; antennomere 1 large, subglobose; 2 transverse, ½ length of 1; 3 transverse, nearly as long as 1 and 2 combined; 4–5 cylindrical, 4 longer than 3; 6–10 transverse, decreasing in length; 11 longer than 10, pointed at apex; 6–10 convex dorsally (in lateral view). Pronotum: lateral margin slightly convergent on basal ⅔, sinuate on apical ¼; anterior angle rounded; transverse basal impression distinct; surface deeply punctate; area between punctures with microsculpture except at base; pronotal length 1.3–1.5 mm (n=11); pronotal width 1.7–1.9 mm. Scutellum: subcordate; alutaceous. Elytron: lateral and apical margins irregularly serrate; external apical angle rounded, with small teeth; apical margin with two teeth; with 10 rows of punctures plus short scutellar row; intervals 2, 4, and 8 costate, costae on intervals 2 and 4 become less pronounced apically, interval 6 costate at base and apex; elytral length 8.2–8.6 mm; elytral width 2.9–3.1 mm. Venter: pro- and metasterna smooth medially, punctate laterally; mesosternum and abdominal sterna smooth medially, alutaceous laterally. Leg: protibia of male with large tooth; metatibia abruptly enlarged at apex in males. Total length: 9.5–10.4 mm.

Remarks. This species can be distinguished by the elytra having a scutellar row; the pronotum with a basal impression and with the lateral margin slightly convergent from basal ⅔ then sinuate to apex.

Host plant. Unknown.

Distribution. Brazil, Paraguay, and Venezuela.

Specimens examined. Brazil. Bahia: no further data ( INSB) . Espirito Santo: Linharce , 24–30.x.1972 ( LACM) . Minas Gerais: nr. Timotea , 19–26.ix.1996, 1–15.v.1999 ( USUC) . Santa Catarina: Nova Teutonia , xi.11.1965 ( USNM) , xi.1967, i.1974 ( BPBM) . Paraguay. Paraguarí: Sapucay ( USNM) . Venezuela. Vargas: La Guayra ( DEI) . Total : 11 .

Figures

FIGURES 5–8. Habitus of Oxychalepus species. 5. Oxychalepus bisignatus. 6. Oxychalepus centralis. 7. Oxychalepus elongatus. 8. Oxychalepus externus.