<documentid="B417AF7A0D38BEA2D3787B9E3FA7EBD1"ID-CLB-Dataset="304936"ID-DOI="10.11646/zootaxa.3619.1.6"ID-GBIF-Dataset="f78abe09-a617-45e3-a0e4-f69d4b8fcc65"ID-ISSN="1175-5326"ID-Zenodo-Dep="220769"ID-ZooBank="95DE82C1-D18A-446E-A369-1C289A784651"IM.bibliography_approvedBy="diego"IM.illustrations_approvedBy="diego"IM.materialsCitations_approvedBy="diego"IM.metadata_approvedBy="diego"IM.tables_requiresApprovalFor="existingObjects,operationResults,plazi"IM.taxonomicNames_approvedBy="diego"IM.treatments_approvedBy="diego"checkinTime="1460577227977"checkinUser="plazi"docAuthor="Reid, C. A. M. & Beatson, M."docDate="2013"docId="03A087CCD554FFB31F89F8F2FB9FFA13"docLanguage="en"docName="zt03619p100.pdf"docOrigin="Zootaxa 3619 (1)"docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article"docStyleId="647186512141C8FC8976D5BCC54AEB7D"docStyleName="Zootaxa.2013-.journal_article"docStyleVersion="9"docTitle="Chaloenus gajah Reid & Beatson 2013, sp. nov."docType="treatment"docVersion="2"lastPageNumber="83"masterDocId="FF99FFB4D556FFB71F1EFB21FFB4FF8F"masterDocTitle="Chrysomelid males with enlarged mandibles: three new species and a review of occurrence in the family (Coleoptera: Chrysomelidae)"masterLastPageNumber="100"masterPageNumber="79"pageNumber="81"updateTime="1730465067115"updateUser="ExternalLinkService">
<mods:titleid="B326C801262DDD605972C639DEF11470">Chrysomelid males with enlarged mandibles: three new species and a review of occurrence in the family (Coleoptera: Chrysomelidae)</mods:title>
<taxonomicNameid="4C094D59D554FFB51F89F8F2FEEFFC63"authority="Reid & Beatson, 2013"authorityName="Reid & Beatson"authorityYear="2013"box="[151,347,979,1004]"class="Insecta"family="Chrysomelidae"genus="Chaloenus"higherTaxonomySource="GBIF"kingdom="Animalia"order="Coleoptera"pageId="2"pageNumber="81"phylum="Arthropoda"rank="species"species="gajah"status="sp. nov.">
<materialsCitationid="3B613C87D554FFB51E8EFF1EFDEBFBF3"collectingDate="1950-11"collectionCode="ZMB"collectorName="A. M. R. Wegner"country="Indonesia"elevation="50"latitude="-1.1"location="Balikpapan"longLatPrecision="1308"longitude="116.816666"municipality="East Borneo"pageId="2"pageNumber="81"specimenCount="1"typeStatus="holotype">
. Colour: entirely yellowish-brown to orange-brown, except antennomeres 8–11 white, mandibular teeth, lateral edges of buccal cavity, antennomeres 1–7, elytra (but not edges of basal half), tibiae, tarsomeres 1–3 dark brown to almost black (elytra and antennomeres 4–7 darkest). Abdominal ventrites densely and finely setose.
): impunctate or almost so, vertex shining, not microsculptured, frontoclypeus dull with fine microreticulation; head glabrous, except trichobothrium between postantennal callus and eye, short recumbent setae between antennae and buccal cavity and on upper surface of mandibles; frontoclypeus slightly ridged between antennae, otherwise almost flat with truncate apical margin; antennal cavities large, separated from each other and from eyes by about 0.75x socket diameter; postantennal calli elevated, well-defined, transverse, adjacent for entire length; eyes small, situated dorsally on head not laterally, oval, separated by c.
eye length; gena long, equal to eye length; antennae c. 0.75x body length, reaching apical third of elytra if reflexed, all segments elongate but decreasingly so from 3–10, and 8–11 moniliform in shape, antennomere 1 greatly elongated (length
eye length) and expanded at apex; relative lengths of antennomeres 1–11, as ratios of the shortest (10): 5, 1.25, 2, 1.9, 1.75, 1.5, 1.35, 1.25, 1.15, 1, 1.35; labrum large, semicircular, with 2 pairs of large setae; mandibles symmetrical, upper surface setose, elongated, laterally swollen at base, with vertical blunt tipped horn in middle of base and three apical teeth (visible ventrally); apical maxillary palpomere elongate-conical, about half length of penultimate.
Thorax: pronotum and hypomera shining, unmicrosculptured, minutely and sparsely punctured, glabrous except trichobothrium in each angle; pronotum transverse, broadest anterior to middle, width c.
length, all angles slightly produced; pronotal disc convex but with pair of small circular depressions at sides; anterior edge truncate, not margined, sides strongly margined, sinuate, hind edge strongly margined, shallowly convex; prosternum glabrous, prosternal process reduced to a thin ridge between coxae, triangularly expanded at apex; procoxal cavities closed, by elongate hypopleural lobes reaching apex of prosternal process; scutellum triangular; elytra shining but outer half finely microreticulate, glabrous except 5–6 setae at apices; each transversely depressed a third from base, from suture to slightly more than half width, with groove from this to base at inner margin of humerus; elytra impunctate except: finely punctured sutural striole, 4 short striae of large punctures in transverse depression, the fourth reaching elytral base; epipleura with upper margin elevated, broad at base, narrowing to a single elytral edge before apex; mesoventrite glabrous, other ventral mesothoracic sclerites finely and densely setose; mesoventrite process elongate triangular (but appearing slightly shrivelled); ventral metathoracic sclerites finely and densely setose (metaventrite shrivelled); procoxae globular, strongly projecting; femora glabrous or almost so on basal half, remainder of leg densely and finely setose; pro- and mesofemora almost parallel-sided, metafemora elongate-ovate, width c. 1.5x mesofemur; pro- and mesotibiae externally weakly ridged in basal half, metatibiae expanded at middle and sharply ridged for basal 2/3; length hind tarsus c. 0.5x hind tibia; first metatarsomere slightly shorter than 2+3, fifth as long as first; claws appendiculate, small right-angled basal lobe.
): ventrites weakly sclerotised, without lateral keels; male: apex of last ventrite weakly medially lobed, shallowly excavate either side of lobe; penis basal foramen circular, thick lipped, shaft cylindrical, sharply reflexed at base then straight, to semi-circular apex; endophallic sclerite thin with poorly defined base; tegmen thin, elongated, Y-shaped.
with male mandibular horns and therefore easily distinguishable from all other males (
<bibRefCitationid="EF984B2BD552FFB31D24F865FD41FCD3"author="Medvedev, L. N."box="[570,757,836,860]"journalOrPublisher="Russian entomological Journal"pageId="4"pageNumber="83"pagination="245 - 252"part="13"refId="ref13198"refString="Medvedev, L. N. (2004) A revision of the genus Chaloenus Westwood, 1861 (Coleoptera: Chrysomelidae: Alticinae), from Oriental Region. Russian entomological Journal, 13 (4), 245 - 252."title="A revision of the genus Chaloenus Westwood, 1861 (Coleoptera: Chrysomelidae: Alticinae), from Oriental Region"type="journal article"year="2004">Medvedev 2004</bibRefCitation>
;
<bibRefCitationid="EF984B2BD552FFB31C1FF865FC04FCD3"author="Takizawa, H."box="[769,944,836,860]"journalOrPublisher="Genus"pageId="4"pageNumber="83"pagination="269 - 330"part="23"refId="ref14766"refString="Takizawa, H. (2012) Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae). Genus, 23 (2), 269 - 330."title="Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae)"type="journal article"year="2012">Takizawa 2012</bibRefCitation>
<bibRefCitationid="EF984B2BD552FFB31E2AF88EFE4CFC48"author="Takizawa, H."box="[308,504,943,967]"journalOrPublisher="Genus"pageId="4"pageNumber="83"pagination="269 - 330"part="23"refId="ref14766"refString="Takizawa, H. (2012) Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae). Genus, 23 (2), 269 - 330."title="Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae)"type="journal article"year="2012">Takizawa (2012)</bibRefCitation>
<bibRefCitationid="EF984B2BD552FFB31CFEF8F5FB26FC63"author="Takizawa, H."box="[992,1170,980,1004]"journalOrPublisher="Genus"pageId="4"pageNumber="83"pagination="269 - 330"part="23"refId="ref14766"refString="Takizawa, H. (2012) Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae). Genus, 23 (2), 269 - 330."title="Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae)"type="journal article"year="2012">Takizawa, 2012</bibRefCitation>
</taxonomicName>
(female unknown), has black elytra, abdomen and legs, and broadly explanate lateral elytral margins;
<bibRefCitationid="EF984B2BD552FFB31BACF8D6FADDFB80"author="Takizawa, H."box="[1202,1385,1015,1039]"journalOrPublisher="Genus"pageId="4"pageNumber="83"pagination="269 - 330"part="23"refId="ref14766"refString="Takizawa, H. (2012) Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae). Genus, 23 (2), 269 - 330."title="Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae)"type="journal article"year="2012">Takizawa, 2012</bibRefCitation>
</taxonomicName>
, has more elongate antennae and penis expanded at apex and flattened in lateral view.
locality is probably the Wain River Forest Reserve, just north of the city of Balikpapan. This isolated 10,000 hectare reserve of lowland forest (maximum elevation
) has been seriously degraded in the last 15 years, with approximately 30% lost to fire, logging and cultivation (
<bibRefCitationid="EF984B2BD552FFB31C90FFA6FB97FB10"author="Craven, D."box="[910,1059,1159,1183]"journalOrPublisher="Poster presented at: GISDECO, Seventh International Seminar on GIS in developing countries"pageId="4"pageNumber="83"pagination="15"refId="ref11553"refString="Craven, D. (2002) GIS and participatory management of a protected forest in East Kalimantan, Indonesia. Poster presented at: GISDECO, Seventh International Seminar on GIS in developing countries, 15 - 18 May 2002. Available from: http: // www. gisdevelopment. net / proceedings / gisdeco / sessions / craven. htm / [accessed July 2010]"title="GIS and participatory management of a protected forest in East Kalimantan, Indonesia"type="book chapter"year="2002">Craven 2002</bibRefCitation>
;
<bibRefCitationid="EF984B2BD552FFB31B31FFA6FA8AFB10"author="Cleary, D. F. R. & Priadjati, A."box="[1071,1342,1159,1183]"journalOrPublisher="Plant Pathology"pageId="4"pageNumber="83"pagination="145 - 163"part="177"refId="ref11515"refString="Cleary, D. F. R. & Priadjati, A. (2005) Vegetation responses to burning in a rainforest in Borneo. Plant Pathology, 177 (2), 145 - 163."title="Vegetation responses to burning in a rainforest in Borneo"type="journal article"year="2005">Cleary & Priadjati 2005</bibRefCitation>
<bibRefCitationid="EF984B2BD552FFB31EF2FFD5FC3CFA83"author="Kumano-Nomura, Y. & Yamaoka, R."box="[492,904,1268,1292]"journalOrPublisher="Journal of Plant Research"pageId="4"pageNumber="83"pagination="183 - 192"part="122"publicationUrl="http://dx.doi.org/10.1007"refId="ref12681"refString="Kumano-Nomura, Y. & Yamaoka, R. (2009) Beetle visitations, and associations with quantitative variation of attractants in floral odors of Homalomena propinqua (Araceae). Journal of Plant Research, 122 (2), 183 - 192. http: // dx. doi. org / 10.1007 / s 10265 - 008 - 0204 - 6"title="Beetle visitations, and associations with quantitative variation of attractants in floral odors of Homalomena propinqua (Araceae)"type="journal article"year="2009">Kumano-Nomura & Yamaoka 2009</bibRefCitation>
<bibRefCitationid="EF984B2BD552FFB31BFEFFD5FA24FA83"author="Takizawa, H."box="[1248,1424,1268,1292]"journalOrPublisher="Genus"pageId="4"pageNumber="83"pagination="269 - 330"part="23"refId="ref14766"refString="Takizawa, H. (2012) Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae). Genus, 23 (2), 269 - 330."title="Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae)"type="journal article"year="2012">Takizawa 2012</bibRefCitation>
<bibRefCitationid="EF984B2BD552FFB31BC3FE36FE95FADB"author="Mayo, S. J. & Bogner, J. & Boyce, P. C."bookContentInfo="370 pp"journalOrPublisher="Royal Botanic Gardens, Kew, xii"pageId="4"pageNumber="83"refId="ref13128"refString="Mayo, S. J., Bogner, J. & Boyce, P. C. (1997) The genera of Araceae. Royal Botanic Gardens, Kew, xii + 370 pp"title="The genera of Araceae"type="book"year="1997">Mayo, Bogner & Boyce 1997</bibRefCitation>
appears to be the first record of this genus from Indonesian Borneo (Kalimantan) (
<bibRefCitationid="EF984B2BD552FFB31A31FE7EFF67FA13"author="Takizawa, H."journalOrPublisher="Genus"pageId="4"pageNumber="83"pagination="269 - 330"part="23"refId="ref14766"refString="Takizawa, H. (2012) Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae). Genus, 23 (2), 269 - 330."title="Descriptions of new species of the genus Chaloenus Westwood from Greater Sunda Islands (Coleoptera: Chrysomelidae: Alticinae)"type="journal article"year="2012">Takizawa 2012</bibRefCitation>
), however the senior author has collected an additional 8 species from there.
