Diplacaspis Jacobson, 1924

Chamorro-Lacayo, Maria & Konstantinov, Alexander, 2009, Synopsis of warty leaf beetle genera of the world (Coleoptera, Chrysomelidae, Cryptocephalinae, Chlamisini), ZooKeys 8 (8), pp. 63-88 : 72-74

publication ID	https://doi.org/10.3897/zookeys.8.90
DOI	https://doi.org/10.5281/zenodo.3792394
persistent identifier	https://treatment.plazi.org/id/552287F6-FFB5-FFAC-FF53-8A0DFCE36B64
treatment provided by	Plazi (2020-04-27 19:10:57, last updated 2024-11-27 00:08:34)
scientific name	Diplacaspis Jacobson
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Diplacaspis Jacobson View in CoL

( Figs. 1 E View Figure 1 ; 2 D View Figure 2 ; 3 D View Figure 3 ; 4 D View Figure 4 ; 5 D View Figure 5 )

Diaspis Lacordaire, 1848: 645 View in CoL ; Type species: Diaspis paradoxa Lacordaire, 1848 , by monotypy; Jacoby, 1881: 74; Diaspsis Jacoby, 1889: 155 (misspelling; summary); [preoccupied by Diaspis Costa, 1835 View in CoL , Coccidae View in CoL ]

Diplacaspis Jacobson, 1924: 239 View in CoL (new name for Diaspis Lacordaire View in CoL ); Blackwelder, 1946: 647 (catalog); Seeno and Wilcox, 1982: 43 (catalog); Riley et al., 2003: 183 (catalog).

Skwarraia van Emden, 1932: 9 (new name for Diaspis Lacordaire View in CoL ).

Diagnosis. Length 3.00- 3.81 mm, width 2.36-3.18 mm. General body shape subcylindrical, widest near shoulders. Antenna serrate beyond 4 th antennomere, 3 rd and 4 th antennomeres slightly widened, but not dilated distally. Pronotum medially elevated, with two tall projections separated by furrow. Pronotal base opposite mesoscutellum (posterior pronotal lobe) with wide notch. Prosternum gradually narrowing posteriorly, abruptly narrowing before middle, widening between mesocoxae. Anterior margin of metasternum concave. Mesoscutellum short, transverse. Metascutellum broadly exposed. Elytral suture serrate, entire (not serrate) in part that exposes metascutellum. Elytral tubercules well developed. Tibiae slightly curved, flattened, with sharp dorsal edge. Fore- and midtibial apices with spine. Tarsal claw appendiculate.

Distribution. New World ( Monrós, 1952).

Remarks. This genus may be distinguished from other Chlamisini by the shape of the prosternum, and an exposed metascutellum in combination with the appendiculate tarsal claw. According to Karren (1972), South American species of Diplacaspis may not possess bifid claws or a posteriorly expanded prosternal process between the mesocoxae. However, the only two species available for our study [ D. batesi (Baly) and D. prosternalis (Schaeffer) ] share character states consistent with the diagnosis.

A total of 6 species currently are known in this genus ( Monrós, 1952).

Material examined.

Diplacaspis batesi (Baly) :

1) a. Brazil, Minas Gerais, col. M. Pic/ b. F. Monrós Collection, 1959/ c. Diplacaspis

batesi (Baly) F. Monrós det. 1950.

Diplacaspis prosternalis (Schaeffer) :

1) a. [ Mexico] EA Schwarz Collector/ b. Monterrey, Mex. 25.II/ c. Diplacaspis

prosternalis (Schaeffer) det. Karren 1968. 2) a. Granada, Nicaragua, Coll. Bak-

er/ b. Diplacaspis prosternalis (Schaeffer) det. Karren 1968.

References

Blackwelder RE (1946) Checklist of the Coleopterous Insects of Mexico, Central America, the West Indies, and South America. Smithsonian Institution, United States National Museum Bulletin 185: iii + 551 - 763.

Emden F van (1932) Die Lrven von Discoloma cassideum Reitt. (Col. Colyd.) und Skwarraia paradoxa Lac. (Col. Chrysom.). Zoologischer Anzeiger 101: 1 - 17.

Jacobson G (1924) Annotationes synonymicae et systematicae de Coleopteris. Revue Russe d'Entomologie (Russkoe entomologicheskoe obozrenie) 18: 237 - 244.

Jacoby M (1881) Biologia Centrali-Americana, Insecta. Coleoptera. Phytophaga (part). Coleotpera, Cryptocephalidae, Chlamydidae, Lamprosomidae, Eumolpidae, vol. 6. R. H. Porter, London, 38 - 187.

Jacoby M (1889) Biologia Centrali-Americana, Insecta. Coleoptera. Supplement Phytophaga (part) 6 (1): 81 - 168.

Karren JB (1972) A revision of the subfamily Chlamisinae of America north of Mexico (Coleoptera: Chrysomelidae). The University of Kansas Science Bulletin 49: 875 - 988.

Lacordaire MT (1848) Monographie des Coleopteres subpentameres de la famille des Phytophages. Tome second. Bruxelles et Leipzig, 890 pp.

Monros F (1952) Revision de las especies argentinas de Chlamisinae (Col., Chrysomelidae) (5 a contribucion al conocimiento de Chlamisinae). Acta Zoologica Lilloana 10: 489 - 672.

Riley EG, Clark SM, Seeno TN (2003) Catalog of the leaf beetles of America north of Mexico (Coleoptera: Megalopodidae, Orsodacnidae and Chrysomelidae, excluding Bruchinae). Coleopterists Society Special Publication No 1, Sacramento, 290 pp.

Seeno TN, Wilcox JA (1982) Leaf Beetle Genera (Coleoptera: Chrysomelidae). Entomography 1: 1 - 222.

Figures

Figure 1. Chlamisini, dorsal view. A, Aulacochlamys distincta (Achard). B, A. costicollis (Lacordaire. C, Carcinobaena pilula (Klug). D, Chlamisus foveolatus (Knoch). E, Diplacaspis prosternalis (Schaeffer). F, Exema elliptica Karren. G, Fulcidax coelestina (Lacordaire). H, Hymetes javana Lacordaire. I, Melittochlamys specula (Klug). Į, Neochlamisus insularis (Schaeffer). K, N. velutinus Karren. L, Pseudochlamys megalostomoides Lacordaire ♀.

Figure 2. Chlamisini, lateral view. A, Aulacochlamys distincta (Achard). B, A. costicollis (Lacordaire). C, Chlamisus foveolatus (Knoch). D, Diplacaspis prosternalis (Schaeffer). E, Exema elliptica Karren.F, Fulcidax coelestina (Lacordaire). G, Hymetes javana Lacordaire. H, Melittochlamys specula (Klug). I, Neochlamisus insularis (Schaeffer). Į, N. velutinus Karren. K, Pseudochlamys megalostomoides Lacordaire ♁. L, P. megalostomoides ♀.

Figure 3. Chlamisini, ventral view. A, Aulacochlamys costicollis (Lacordaire). B, Carcinobaena pilula (Klug). C, Chlamisus foveolatus (Knoch). D, Diplacaspis prosternalis (Schaeffer). E, Exema elliptica Karren. F, Fulcidax coelestina (Lacordaire). G, Hymetes javana Lacordaire. H, Melittochlamys specula (Klug). I, Neochlamisus insularis (Schaeffer). Į, N. velutinus Karren. K, Pseudochlamys megalostomoides Lacordaire ♁. L, P. megalostomoides ♀.

Figure 4. Chlamisini, frontal view. A, Aulacochlamys costicollis (Lacordaire). B, Carcinobaena pilula (Klug). C, Chlamisus foveolatus (Knoch). D, Diplacaspis prosternalis (Schaeffer). E, Exema elliptica Karren. F, Fulcidax coelestina (Lacordaire). G, Hymetes javana Lacordaire. H, Melittochlamys specula (Klug). I, Neochlamisus insularis (Schaeffer). J, N. velutinus Karren. K, Pseudochlamys megalostomoides Lacordaire ♁. L, P. megalostomoides ♀.

Figure 5. Chlamisini, caudal view. A, Aulacochlamys costicollis (Lacordaire). B, Carcinobaena pilula (Klug). C, Chlamisus foveolatus (Knoch). D, Diplacaspis prosternalis (Schaeffer). E, Exema elliptica Karren. F, Fulcidax coelestina (Lacordaire). G, Hymetes javana Lacordaire. H, Melittochlamys specula (Klug). I, Neochlamisus insularis (Schaeffer). Į, N. velutinus Karren. K, Pseudochlamys megalostomoides Lacordaire ♀.