Stoiba angusticollis (Suffrian, 1868)

Shin, Chulwoo & Chaboo, Caroline S., 2012, A revision and phylogenetic analysis of Stoiba Spaeth 1909 (Coleoptera, Chrysomelidae), ZooKeys 224, pp. 1-36 : 7-8

Stoiba angusticollis (Suffrian, 1868) Figures 11-13

Chelymorpha angusticollis Suffrian 1868: 239; Gemminger and Harold 1876: 3638 [catalog]; Leng and Mutchler 1914: 458 [list of the West Indies Coleoptera ].

Stoiba angusticollis : Spaeth 1909: 720 [catalog], 1914: 51 [catalog]; Blackwelder 1946: 743 [checklist]; Wilcox 1975: 151 [checklist]; Borowiec 1996: 229 [faunistic record], 1999: 130 [catalog]; Takizawa 2003: 105 [checklist]; Borowiec and Świętojańska 2012 [online catalog].

Type material.

Unknown.

Type locality.

“Cuba”

Specimens examined.

Cuba: Prov. La Havana: ex FC Bowditch collection (MCZ: 2); ex F Monrós collection (USNM: 1); no further data (AMNH: 2; MCZ: 1; MMUE: 1; USNM: 1); Pinar del Rio: Pan de Guajaibon, May 17 1953, MJ Jaume (INHS: 1); Soroa July 6-7 1974, Z&M Mészáros (UWCP: 1).

Diagnosis.

Stoiba angusticollis is one of three species with brown tone elytra. This species is easily distinguished from the other two Stoiba species ( Stoiba fuscicornis and Stoiba swartzii ) with brown elytra by body shape, dorsal surface coarsely and roughly punctate, opaque coloration, mouth parts, and collecting locality. Body distinctly (Fig. 12) convex; dorsal surface coarsely and densely punctate (Fig. 11), opaque brown; mandible (Fig. 58) with 5 teeth; maxillary palpus (Fig. 60) and labial palpus (Fig. 62) compact; collection locality in Cuba.

Description.

Adult (n=10) length 6.1-8.0 mm, width 6.0-7.8 mm. Body (Figs 11-13) rounded with elytral base broader than pronotal base; profile (Fig. 12), 0.5 times as convex as long, often discontinuous between pronotal and elytral bases, highest at anterior 1/3 of elytra; color brown to reddish brown, opaque; surface texture scale-like, roughly and coarsely punctate. Antenna (Figs 11, 47) as long as or slightly longer than pronotal lateral edge; antennomeres I–II reddish brown, shiny, darker apically; III long, broader apically, 2 times longer than II, 1.2 times longer than IV; V–XI pubescent with long setae on apex. Mandible with 5 teeth; maxillary palpus and labial palpus compact. Pronotum (Fig. 11) hemispherical with anterior margin slightly emarginate; disc slightly convex with longitudinal cleavage on surface medially. Elytra distinctly convex, finely and more coarsely punctate than pronotum. Spermatheca (Fig. 72) falcate with two openings; receptacle 0.2 times as long as pump; spermathecal duct moderately coiled.

Distribution.

Cuba: Prov. La Havana; Pinar del Rio.

Remarks.

Our description was made by observing the examined specimens and comparing to the original description ( Suffrian 1868). The original description is sufficient to recognize the species with features such as convex body, coloration, and collecting location. The description corresponds to our observation.