Stoiba nigricans Zayas, 1939

Shin, Chulwoo & Chaboo, Caroline S., 2012, A revision and phylogenetic analysis of Stoiba Spaeth 1909 (Coleoptera, Chrysomelidae), ZooKeys 224, pp. 1-36 : 16-17

Stoiba nigricans Zayas, 1939 Figures 935-37

Stoiba nigricans Zayas 1939: 255 [original description including figure]; Blackwelder 1946: 743 [checklist]; Wilcox 1975: 151 [checklist]; Borowiec 1999: 131 [catalog]; Takizawa 2003: 106 [checklist]; Borowiec and Świętojańska 2012 [online catalog].

Type material.

Holotype in USNM (Type No. 53530).

Type locality.

Cuba: Prov. Santiago de Cuba: Loma Gato, Clemente.

Specimens examined.

Cuba: Prov. Santiago de Cuba: Loma Gato, Clemente, July 1938 (USNM: holotype No. 53530); Sierra Maestra 800-4000 m, Aug 7 1929, Frere Clement, ex FC Monrós collection (USNM: 1).

Diagnosis.

Stoiba nigricans (Figs 35-37) is distinguished by dark antennae, brownish black pronotum and elongate, C-shaped spermatheca, these serving to separate it from Stoiba bruneri and Stoiba clarildae . It also differs from Stoiba bruneri by the unicolored antennae and trapezoidal pronotum, and from Stoiba clarildae by the pronotal base as broad as the elytral base.

Description.

Adult (n=2) length 8.8-9.0mm, width 6.9-7.0mm. Body (Figs 35-37) oval, broadest between anterior 1/3 and middle of elytra in dorsal view; profile moderately convex, highest at middle of elytra. Antennae (Figs 35, 55) brownish black with antennomeres VI–XI pubescent with pale setae; antennomeres I–IV shiny, glabrous; antennomere III 3 times as long as II, 1.3 times as long as IV. Mandible (Fig. 58) with 5 teeth, maxillary palpus (Fig. 60) and labial palpus (Fig. 62) compact. Pronotum (Fig. 35) brownish black, trapezoidal with anterior edge linear; antero-lateral edge smoothly angled, anterior 2/3 gradually broader, rounded and slightly narrower in posterior 1/3; disc slightly convex; with discal surface smooth, scale-like; lateral margin region finely and sparsely punctate. Elytra (Fig. 35) bluish black, slightly opalescent, finely punctate; margin area distinct, narrower posteriorly. Hind wing brachypterous. Spermatheca (Fig. 78) elongate, C-shaped with two openings, receptacle 0.2 times as long as pump; spermathecal duct short and coarsely coiled.

Distribution.

Cuba: Prov. Santiago de Cuba.