Bonn. zool. Beitr. Bd. 44 H. 1-2 S. 41—46 Bonn, August 1993 Key to the genera of Oriental cassidine beetle larvae feeding on Ipomoea with description of a new species of Sindia (Coleóptera, Chrysomelidae) L. N. Medvedev & Y. M. Zaitsev Abstract. A key to the genera ofthe Oriental Aspidomorphini larvae (ChrysomeHdae) feeding on plants ofthe genus Ipomoea (Convolvulaceae) is given. Sindiaschawallerin. sp. fromtheisland ofLeyte, Philippines, is described including larva and pupa. A keyto the imagines ofthe genus Sindia is added. Key words. Coleóptera, Chrysomelidae, Sindia, newspecies, larvalmorphology, Philip- pines. Introduction During a visit to the island of Leyte, Philippines, Dr. W. Schawaller (Staatliches Museum für Naturkunde Stuttgart, SMNS) and collaborators collected a copious and interesting material of chrysomelid beetles. This material, comprising over 100 species of which several are new to science, will be published elsewhere after com- pletion of all determinations. The present paper serves to describe an abundant species of the Cassidinae taken together with larvae and pupae mainly in agrocenoses, thus obviouslybeing abatatapest. Amore detailedstudyofthis species has revealed that it represents a new species of Sindia. The authorship of the new species is by the senior author, while the descriptions oflarvae and pupae have been prepared by the junior author. Taxonomy Sindia schawalleri Medvedev n. sp. Holotype: Philippines, Leyte, Visayas State College of Agriculture N Baybay, cultivated land, 1. IIL 1991, leg. W. Schawaller, J. Trautner & K. Geigenmüller, deposited in SMNS. Paratypes: 3 specimens in Zoologisches Forschungsinstitut und Museum Alexan- der Koenig (ZFMK), 4 specimens in SMNS, 2 specimens in the collection of the senior author. Description: Body fulvous, 4 or 5 apical segments of antennae, 2 round spots on prothorax and numerous spots on elytra (fig. 1), including 3 spots on explánate margin (humeral, posterolateral and sutural) are black. Body ovate, about 1.3x longer than broad. Head impunctate, clypeus broad, transverse; frons longitudinally — grooved. Antennae short, 5 apical segments thickened, segments 8 11 as long as broad, last segment slightlyelongate, acuminate(fig. 2). Prothorax 1.8x broaderthan long, with broadly rounded sides and impunctate surface. Elytra at base slightly 42 L. N. Medvedev & Y. M. Zaitsev broader than prothorax, with explánate margin at the broadest point about half width of disc; surface with sparse large dark punctures, arranged in more or less distinct rows, especially near suture, explánate margin with honey-comb structure. Claws with distinct comb structure on inner side and very slightly serrate on outer side (figs 3—4). Body length 7.2—7.6 mm. Relations: The discoveryofaSindiaspecies onthe Philippine Islands is somewhat surprising, because the three hitherto known congeners seem to be restricted to a relatively coherent area delimited by the Himalayas, southern China, and Vietnam. Thegenus is easilydistinguishablebythelack ofacomblike structure onthe exter- nal side of the claw. The new species seems to represent an aberrant form, for its claws still retain clear traces of an external serration, thus having a somewhat in- termediatepositionbetweenthegeneraSindiaandAspidomorpha. Sindiaschawalleri n. sp. appears to be closely related to Sindia sedecimmaculata Boheman, another aberrant species (Mauhk 1919). However, the new species has a general appearence very similar to Aspidomorpha orientalis Boheman, also known as a rather isolated species inside the genus. The morphology of the larva shows quite definitely that the new species cannot beincluded inthegenusAspidomorpha. Sindiaschawallerin. sp. is feedingonplants of the genus Ipomoea (Schawaller in litt. 1992) as most of the Aspidomorphini species and is probably injurious to cultivated batatas. Key to the species of Sindia 1 (4) Elytron coarsely sculptured, with 2 longitudinal and numerous transverse ribs. Body oblong. 2 (3) Prothorax fulvous with 9 irregular black spots, arranged more or less in two transverse rows. Elytron fulvous with 3 spots on disc and 3 on explánate margin black, Length — 11.5 14 mm. South India clathrata Fabricius, 1798 3 (2) Uppersideblackwithfrontmarginofprothoraxmoreorless fulvous. Longitudinalribs of elytron more feeble, as in the preceding species. Length 8 mm. North India, Burma foveolata Boheman, 1856 4 (1) Elytron smooth, with—out ribs. Body ovate. Prothorax fulvous with 2 black spots. 5 (6) Antennal segments 8 10 elongate. Elytra strongly and densely punctured, each with 8 round black spots, including 3 spots on explánate margin and one behind scutellum. The first spot on explánate margin placed far behind fore margin. Length 6.6—7 mm. North India, South China, Vietnam sedecimmaculata Boheman, 1856 — 6 (5) Antennal segments 8 10 as long as wide. Elytra sparsely punctured. Elytra with the same pattern of black spots, but they are irregular and the first spot on the explánate margin touches fore margin. Length 7.2—7.6 mm. Philippines schawalleri n. sp. Larval morphology Description of last instar larva: Body ovate (fig. 5), moderately even. Head and lateral processes dark pitchyblack, caudal processes dark brown, upperside with dense microsculpture on sides, with longitudinal central pale stripe, underside light with darkened apical segments. Upperside with confused rows of very short light- brown setae, surrounded by light rings. Head transversely ovate (fig. 6), epicranial suture of moderate length, frontal sutures thick, forming an acute angle, endocarina narrow. Vertex without setae, with sclerotised grains with acute apices, more or less spine-like. Frons smooth, shining, sparsely sclerotised, bearing 20—22 slightly Oriental cassidine beetle larvae 43 Figs 1—4: Sindia schawalleri n. sp.; 1. dorsal view; 2. apical segments of antenna; 3. claws from outer side; 4. claws from inner side. Scale for adults is 5 mm. clávate bristles. Clypeus transverse, with a bristle on each side. Labrum (fig. 7) with veryslightlyarcuate foremarginand quadrangularmiddleexcavation, having 6 short setae on its base; each side of fore margin with 3 setae; surface with 6 setae (2, 4) and 4 pores. Maxillar palpi 2-segmented, labial palpi 1-segmented. Antennae 2-segmented, with a smallcone-Uke papilla onthe apex ofthe second segment. Man- dibles (fig. 8) broad, with 5 teeth on apex and acute inner margin. Prothorax more or less rugose, light with 2 longitudinal dark-brown spots, without setae, lateral pro- cesses conical with acute apex, secondary processes with conical, slightly serrate thecae on apex. Anterior processes with common base. Meso- and metathorax broad withtransverse furrows, anterior processes shorterand narrowerthan posterior ones. — Abdominal segments narrow, each with transverse furrow, lateral processes 1 5 shortened posteriorly, the 7th process longer than 6th and 8th process. Caudal pro- cesses not connected at base, without spinules, lateral processes with short stout spinules (fig. 10). Stigmae conical, larger on thorax. Caudal processes with exuvium and crumbly faeces structure ofirregularly triangular form. Tibiotarsus short, claws with indistinct tooth (fig. 9). Length of body up to 9 mm. Description of first instar larva: Caudal processes without secondary branching. 44 L. N. Medvedev & Y. M. Zaitsev — — — Fig—s 5 12: Sindia schawalleri n. sp. (5 \Q, 12) and Laccoptera (11); larva (5 10) and pupa (11 12). 5. dorsal view; 6. head; 7. labrum; 8. mandible; 9. tibiotarsus; 10, 11. lateral process ofabdominal segment 1; 12. dorsal view. Scale for complete larva (5) and pupa (12) is 5 mm. Oriental cassidine beetle larvae 45 Description of pupa: Body ovate, brown with light spots (fig. 12). Prothorax with arcuate fore margin and feeble triangular protuberances near hind angles; sur- face shining, with sparse and small sclerotised punctures, margins with short spines and 4 processes, 2 on each side, having short spinules. First abdominal process long and curved, with 6—7 spinules on fore margin and 7—8 on hind margin. Second to 5th abdominal processes shorter, conical, with spinules. Processes of segments 6—7 spine-like, short, directed backwards. Segment 8 rounded on apex, with 2 thin and long caudal processes, lacking spinules, but usually with exuviae and faeces. There are 6 pairs ofstigmata, but the last pair is reduced to an almost indistinct light spot, the first pair conical, the others tube-hke. Length of body up to 8 mm. Key for the genera of Oriental Aspidomorphini larvae Keys for Oriental larvae of Cassidinae were proposed in the last years (Gressitt & Kimoto 1963, Zaitsev & Medvedev 1983). The genus Sindia is included in the key of Gressitt & Kimoto according to the description of clathrata Fabricius by Mauhk (1948). Below we propose a key to larvae for all genera ofOriental Aspidomorphini, feeding onIpomoea(Aspidomorpha, Sindia, Laccopterd) and onArgyreya{Sindiola). 1 (2) Caudal processes of 1st instar larvae with long secondary processes. Processes 1—2 on eachsideofprothoraxnotjoinedatbase, bearing slenderspinules. Caudalprocessesnever twice as long as last pair of lateral processes Aspidomorpha Hope, 1840 2 (1) Caudal processes of 1st instar larvae without secondary processes. Processes 1—2 on each side of prothorax more or less joined at base, bearing stout spinules. Caudal pro- cesses fully twice as long as last pair of lateral processes. 3 (4) Labrum with 3 marginal setae on each side (fig. 7). Microsculpture ofupperside dense, dark brown. Lateralprocesses ofbodydark. Faeces structure (parasol) forming acrumbly irregular triangle,—which is somewhat longer than wide Sindia Weise, 1897 4 (3) Labrumwith 5 6marginal setae on each side. Microsculpture ofupperside sparse and rather pale. Lateral processes pale, with longer spinules (fig. 11). Parasol forming a com- pact triangle, which is wider than long. 5 (6) Labrumwith 5 pairs ofmarginal setae. Pusher long, cylindrical, longerthanhalfof8th abdominal processes Laccoptera Boheman, 1855 6 (5) Labrum with 6 pairs ofmarginal setae. Pusher short, conical, shorter than half of 8th abdominal processes Sindiola Spaeth, 1903 Acknowledgements We thank Dr. Wolfgang Schawaller (SMNS) for making possible the study of his Philippine Chrysomelidae and for help with the publication of this paper. Zusammenfassung Ein Bestimmungsschlüssel für die Gattungen der orientalischen Aspidomorphini-Larven (Chrysomelidae, Coleóptera), die an Windengewächsen der Gattung Ipomoea fressen, wird erstellt. Sindiaschawallerin. sp. von der Philippinen-Insel Leyte wird nach Imago, Larve und Puppe beschrieben, und ein Bestimmungsschlüssel für die Imagines der bekannten Arten der Gattung Sindia Weise wird beigefügt. 46 L. N. Medvedev & Y. M. Zaitsev References — Gressitt, J. L. &S. Kimoto (1963): Ch—rysomelidae ofChina and Korea, part 2. Pacific Ins. Monograph, Honolulu, IB: 301 1026. — Maulik, S. (1919): FaunaofBritish India, Hispinae& Cassidinae. Taylor &Francis, Lon- don, 439 p. — Maulik, S. (1948): Early stages and habits of Sindia clathrata F. Ann. Mag. nat. Hist. 12: 368-371. Zaitsev, Y. M. &L. N. Medvedev (1983) Lichinki Hstoedov-shitonosok tribyAspidomor- phini (Chrysomehdae, Cassidinae)iz—V'etnama. [Thelarvaeoftortoisebeetles ofthetribe Aspidomorphini from Vietnam]. In: Fauna i ekologiya zhivotnykh V'etnama, 130—145. Izdatel"stvo "Nauka", Moskva. Dr. L. N. Medvedev, Dr. Y. M. Zaitsev, Institute of Evolutionary Morphology and Ecology of Animals, Academy of Sciences, Leninsky Prospect 33, 117071 Moscow, Russia.