Amblycerus serieguttatus ( Chevrolat, 1877 )

Santos, Aluska Tavares Dos & Ribeiro-Costa, Cibele Stramare, 2019, Rearrangements in some species groups of Amblycerus Thunberg, 1815 (Coleoptera: Chrysomelidae: Bruchinae) including keys, description of a new species, new host plant and distributional records, Zootaxa 4701 (2), pp. 101-148 : 140-142

Amblycerus serieguttatus ( Chevrolat, 1877)

( Figs 20 , 33 , 46 , 59 , 76, 89, 112, 115, 122)

Spermophagus serieguttatus Chevrolat, 1877: 125 (desc.).

Amblycerus serieguttatus Blackwelder, 1946: 763 (cat.); Udayagiri & Wadhi, 1989: 15. (cat.); Romero et al. 1996 (rev.); Romero et al. 2002 (phyl.).

Type material examined. The species recognition was done through the A. serieguttatus original description and the work of Romero et al., (1996) that includes male genitalia illustrations.

Additional specimens examined. [1 female specimen]: MÉXICO: Yucatan \ 2 km. E ChitzenItza\ 25 May 1984 \ R. Turnbown; TUR; Amblycerus \ serieguttatus (Chev.) \ Det. J. Romero ’91; Amblycerus serieguttatus \ ( Chevrolat, 1877)\ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA). [1 male specimen]: COSTA RICA, Punt. Prv.\ 6 km. S. Sta. Elena\ June 6–7, 1983 \ J. E. Wappes; Amblycerus \ serieguttatus\ Chevr.\ det.\ J. M. Kingsolver; Amblycerus serieguttatus \ ( Chevrolat, 1877)\ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA). [1 male specimen]: Nicaragua:\ Leon/ UV \ 20-1-93 \ M. Pogatshnik; Amblycerus \ serieguttatus\? (Sharp)\ Ribeiro-Costa, C. S. det. 20; Amblycerus serieguttatus \ ( Chevrolat, 1877)\ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA). [1 male specimen]: PANAMA: Cocle Prov. \ El Valle rd., 650 m. \ 20 May 1991 \ R. Turnbow; Amblycerus serieguttatus \ ( Chevrolat, 1877)\ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA). [1 male specimen]: PANAMA: Cocle \ El Vale\ 19 Fab. 1999\ R. Turnbown; Amblycerus serieguttatus \ ( Chevrolat, 1877)\ Det.: A. T. Santos; C. S. Ribeiro- Costa, 2018. ( FSCA). [1 male specimen]: TOBAGO: Speyside\ 30-V-1996 \ B. K. Dozier; Collector\ B. K. Dozier; in\ serieguttatus\ grp\ det.\ J. M. Kingsolver; Bolivia\ Amblyc. A 15 [label handwriting]; Amblycerus serieguttatus \ ( Chevrolat, 1877)\ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA). [3 specimens males]: 53 420; Hist.—Coll. ( Coleoptera )\ Nr. 53420\ Spermophagus \ alternans N.\ Columb. Moritz.\ Zool. Mus. Berlin; Amblycerus serieguttatus \ ( Chevrolat, 1877)\ C. S. Ribeiro-Costa det. 2015; Amblycerus serieguttatus \ ( Chevrolat, 1877)\ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( ZMHB).

Measurements. BL: 6.8 mm; BW: 3.3 mm.

Diagnosis ( Figs 20 , 33 , 112 ). Amblycerus serieguttatus is characterized by the following combination of characters: eyes distant from each other anteriorly ( Fig. 33 ), ocular index: 4.0; elytra ( Fig. 20 ) with tufts of dense setae on interestriae 3, 5, 7, 9; median lobe of male genitalia about 3.6 times as long as its greatest width at apical region ( Fig. 112 ); internal sac with a pair of hollow, subcircular, tuberculate sclerites on the apical region ( Fig. 112 ); median region of internal sac with a pair of hand-shaped sclerites. Amblycerus serieguttatus is similar externally to A. galapagoensis , from which it differs in lateral carina almost reaching the posterior margin of pronotum (reaching the posterior margin of pronotum in A. galapagoensis ) and scutellum tridentate, median tooth longer than the lateral ones (scutellum unidentate in A. galapagoensis ). Other similar species is A. luteonotatus , belonging to the luteonotatus group ( Ribeiro-Costa 1995), but in A. serieguttatus , the prosternal process, although expanded beyond the anterior coxae as in A. luteonotatus , does not reach the median legs, whereas it does reach the median legs in A. luteonotatus .

Distribution ( Fig. 122 ). United States (new country record), Mexico, Guatemala, Nicaragua (new country record), Costa Rica, Panama, Venezuela, Trinidad and Tobago (new country record), and Argentina (new country record).

Life History. No information was found on this species in the literature.

Host Plants. Unknown.

Figures

FIGURE 122. Map with the geographical distribution of A. eustrophoides, A. serieguttatus and A. simulator. Leaked symbols refer to bibliography data.

FIGURES 19–21. Species reallocated: 19. A. eustrophoides, 20. A. serieguttatus, 21. A. simulator. Scale bars = 1.0 mm.

FIGURES 32–34. Head, species reallocated: 32. A. eustrophoides, 33. A. serieguttatus, 34. A. simulator. Scale bars = 1.0 mm.

FIGURES 45–47. Lateral, species reallocated: 45. A. eustrophoides, 46. A. serieguttatus and 47. A. simulator. Scale bars = 1.0 mm.

FIGURES 58–60. Pronotum, species reallocated: 58. A. eustrophoides. 59. A. serieguttatus and 60. A. simulator. Scale bars = 1.0 mm.

FIGURES 111–113. Male genitalia, species reallocated: 111. A. eustrophoides, 112. A. serieguttatus and 113. A. simulator. Scale bars = 0.25 mm.