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Species name

Diabrotica litterata Sahlberg 1823: 70 as Crioceris

 

Type locality

Mexico

 

Type depository

The type is lost

 

Synonyms

delineata Jacoby 1887: 514 (type locality: Cordova, Mexico; type depository: BMNH, lectotype, male, verified)

 

Diagnosis

Body length 5.8-6.4 mm. Body width 3.0-3.4 mm. Head basic color yellow. Antennae filiform, bi- or tricolored, antennomeres 1-3 uniformly yellow, antennomeres 4-8 gradually infuscated, antennomeres 9-10 yellow, partly infuscated, antennomere 11 dark apically. Maxillary palpi yellow or yellow ocher, labrum black or chestnut. Pronotum yellow or yellow ocher, subquadrate, weakly bifoveate, with wide shallow foveae, shagreened with minute wrinkles. Scutellum yellow or yellow ocher. Elytra yellow or rufous, maculate, with two thin black ring-shaped marks on each elytron, one at base and another (half-ring) behind middle of elytron. Rings may be reduced to a variable degree. Elytral epipleura completely yellow, sutural angle of elytra round, punctation scattered, fine. Abdomen yellow or yellow ocher. Legs yellow or yellow ocher. Aedeagus symmetric, with six internal sac sclerites.

 

Known distribution

Mexico, Belize, Guatemala

 

Host plants

Unknown

 

Remarks

We studied the type of D. delineata from BMNH, five paratypes in MCZ collection (including two males) and additional material identified as D. litterata in the BMNH collection. We studied the internal sac of aedeagus in the type and two paratypes of D. delineata and in two males identified as D. litterata . No substantial differences were found in the internal sac armament in all studied males. External features of the type of D. delineata fit well to the Sahlberg's description and illustration. Hereby we treat the male type of D. delineata as a male of D. litterata .

 

Potential problems with identification

Diabrotica litterata (Sahlberg) is very similar to D. septemliturata Erichson. The shape of the internal sac sclerites allows distinguishing both species very clearly.