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Species name

Diabrotica barclayi Derunkov, Prado, Tishechkin, Konstantinov 2015: 6

 

Type locality

Cerro Zunil, Guatemala

 

Type depository

BMNH, holotype, male

 

Diagnosis

Body length 7.4-7.8 mm. Body width 3.7-3.8 mm. Head basic color yellow. Antennae filiform, bi- or tricolored, antennomere 1 pale olivine, antennomeres 2-3 yellow, upper sides darkened, antennomeres 4-8 gradually infuscated, antennomeres 9-10 yellow, partly infuscated, antennomere 11 dark apically. Maxillary palpi yellow, labrum yellow ocher. Pronotum green or deep malachite green, subquadrate, bifoveate, with small round foveae, shagreened with minute wrinkles. Scutellum yellow or yellow ocher. Elytra deep malachite green, maculate, with two small round yellow humeral spots and two transverse yellow maculae behind the middle of elytra. Elytral epipleura completely green, sutural angle of elytra obtuse-angled, punctation dense, fine. Abdomen pale olivine. Tarsi and tibiae yellow or mars yellow, femora deep malachite green. Aedeagus symmetric, with four internal sac sclerites.

 

Known distribution

Guatemala

 

Host plants

Unknown

 

Remarks

Two males from Cerro Zunil in the BMNH represent Jacoby's variety of D. selecta. After study of genitalia in one male we found that internal sac armament is quite different from that in D. selecta. Body shape and maculae arrangement on the elytra in D. s2n also differs from D. selecta. Therefore, we treat it as a separate new species.

 

Potential problems with identification

Diabrotica barclayi Derunkov, Prado, Tishechkin, Konstantinov is very similar to D. selecta Jacoby. They can be separated by the following features: there are only two maculae on elytron in D. barclayi, but three maculae in D. selecta. Shape and arrangement of maculae is quite different in both species. Armament of internal sac is also different (sclerite 4C is simple pointed hook in D. selecta, while it is elongate flat and saw-like plate, toothed laterally in D. barclayi).