identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
CF48E1815C8C5F08BAE69536970535A2.text	CF48E1815C8C5F08BAE69536970535A2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cryptocephalomorpha thom Choi, Nomura & Park 2026	<div><p>Cryptocephalomorpha thom Choi, Nomura &amp; Park sp. nov.</p><p>Type material.</p><p>Holotype. Cambodia • ♂; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=104.305244&amp;materialsCitation.latitude=10.508736" title="Search Plazi for locations around (long 104.305244/lat 10.508736)">Kep National Park</a>, Prey Thom Commune, Krong Keb District, Kep Province; 10°30'31.45"N, 104°18'18.86"E; 71 m; “ UV fluorescent lamp ”; 6 May 2018; J. K. Park leg.; Kyungpook National University, Sangju-si, Republic of Korea . Paratype. Thailand • ♀; Kaeng Krachan National Park, 17 km point; 313 m; “ NLT (5 m × 3) ”; 21 Mar 2012; S. Nomura leg.; National Museum of Nature and Science, Tsukuba, Japan (Fig. 1) .</p><p>Differential diagnosis.</p><p>Large species for the genus, body length more than 6 mm from head to visible abdominal segment. Mandible normal, without lateral excision and spine. Ground color almost uniformly dark brown, with small, narrow reddish patch on each of elytral subapex. Pronotal lateral margin distinctly explanate laterally; lateral margin visible from above. Elytral longer; length / width ratio of 1.22–1.25, lateral margin incurved below; lateral margin not distinctly visible from above, narrowed toward the apex, without a lateral seta of apical series and with a small elytral light patch on each side. Male abdominal sternite VI with dense pubescent pad at middle. Female abdominal sternite VI with four setae.</p><p>This is a large species within the genus Cryptocephalomorpha, readily recognized by its distinctive form of the elytral lateral margin and coloration. Among known congeners, it is most similar to C. maxima . However, this new species is distinguished from C. maxima by the incurved elytral lateral margin, small elytral patches, absence of the elytral lateroapical seta, and female gonocoxite II setation. The species is also remarkable in combining the large body size of C. maxima and C. gigantea with the reduced elytral chaetotaxy characteristic of smaller Oriental congeners.</p><p>Neither the holotype nor the paratype matches any known Oriental species of the genus in external morphology. Although collected from geographically separated localities and representing opposite sexes, the two specimens agree closely in all major external diagnostic characters, including body shape, coloration, elytral lateral structure, chaetotaxy, and the absence of the elytral lateroapical seta. Furthermore, in previously described Oriental species of the genus represented by both sexes, the external diagnostic characters used in species identification have not been observed to vary sexually. The observed differences between the present specimens are therefore interpreted as attributable to sexual dimorphism, and the two specimens are regarded as conspecific, representing a distinct new species. In contrast, the Australasian and Afrotropical species of the genus possess unicolored elytra, and the Australasian species are also readily distinguished by the presence of a sharp lateral mandibular excision and spine.</p><p>Description.</p><p>General habitus as Fig. 2; body elongate-oval, with overall outline subparallel-sided; dorsal surface strongly convex; ventral surface flat. Cephalic, pronotal, and elytral discs forming an almost continuous dorsal and lateral outline, without distinct depressions or interruptions between them; mouthparts, appendages, and legs concealed beneath the body and largely not visible in dorsal view.</p><p>Color. Ground color dark reddish brown to dark brown; palpi, antenna, prosterna, procoxa, mesocoxa and abdominal sterna lighter; elytron with a small, narrow reddish patch at subapex.</p><p>Measurement. Holotype. BLA 6.3 mm, BLE 5.9 mm; HL 0.7 mm, HW 2.0 mm; PL 1.9 mm, PW 2.7 mm; EL 3.4 mm, EW 2.9 mm. Paratype. BLA 6.7 mm, BLE 6.6 mm; HL 0.7 mm, HW 2.0 mm; PL 2.0 mm, PW 2.9 mm; EL 4.0 mm, EW 3.2 mm.</p><p>Microsculpture. Dorsal surface of head, pronotum and elytron with very fine but distinct isodiametric reticulate microsculpture and shallowly punctate with fine and irregularly scattered punctures.</p><p>Head. Smooth, small, transverse and orthognathous; anterior margin rather convex, mouthparts reduced, narrow, and concealed by the anterior margin in dorsal view. Clypeus not recognizable; labrum reduced. Mandibles very small, without lateral excision or process. Maxillary palpi very short, cylindrical, with terminal palpomere longer than the combined length of the preceding palpomeres. Labial ligula short, apically rounded, bearing several short setae. Labial palpi rather short; terminal palpomere enlarged and strongly dilated, remaining palpomeres reduced. Mentum with median tooth nearly acute and with a rather long lateral lobe on each side; lateral lobes subquadrate apically. Compound eyes slightly depressed from the anterior margin of the head, subtriangularly expanded ventrally. Tempora enclosing the posterolateral margins of the compound eyes, weakly protruding laterally and bearing several short setae. Antennae short, nearly filiform; flagellar antennomeres slightly flattened and pubescent from antennomere IV onward. Head with a deep antennal groove between compound eyes and mouthparts. Submentum fused with mentum, with suture only faintly impressed. Gular suture present.</p><p>Prothorax. Pronotum smooth and convex; lateral portions entirely incurved ventrally, but lateral margins visible from above; lateral margins abruptly curved posteriorly, nearly subparallel-sided behind the point of curvature; without lateral seta. Proepisternum bearing very short, stout pubescence. Prosternal process elongate, faintly margined, acute at apex. Ventral surface convex as a result of the incurved dorsolateral portions.</p><p>Pterothorax. Scutellum small, nearly concealed by the basal margin of the pronotum. Elytra smooth, very convex, nearly subparallel-sided; lateral margins barely visible from above at the humeral region and widest posteriorly. Striae barely impressed, indicated by irregular impressions or shallow strial punctures. Elytron with no discal setigerous puncture, two to three marginal setigerous punctures; only humeral marginal series of setigerous punctures present; subapical marginal series of setigerous puncture absent; central part of the humeral margin bearing a few very short, stout pubescence. Metasternum and metepisternum bearing some very short, stout pubescence (Fig. 3).</p><p>Abdomen. Abdominal sterna I – III fused, with sutures only faintly impressed; abdominal sterna I – IV bearing short, stout pubescence, more concentrated along the lateral portions; abdominal sterna III and IV each with two setae.</p><p>Legs. Short and rather flattened; coxae and trochanters bearing a few very short, stout setae or pubescence. Femora and the metatrochanter enlarged and flattened, each femur with a deep tibial cavity-like groove. Tibiae and tarsi short, stout, and slightly flattened. Tibial spurs short and very stout.</p><p>Sexual dimorphism. Male pro- and mesotarsomeres II – III each with two rows of very transverse adhesive setae; tarsomere IV of all legs bearing spatulate adhesive setae. Female pro- and mesotarsomeres II – IV and metatarsomeres III – IV bearing spatulate adhesive setae. Male abdominal sternite V with a horizontal row of rather long pubescence medially except for usual fixed setae and short pubescence, and sternite VI with two setae and a dense pubescent pad medially as in Fig. 4 A; female abdominal sternite V bearing only short, stout pubescence and sternite VI with four setae as in Fig. 4 B.</p><p>Male genitalia. As in Fig. 5; ring sclerite entirely narrow to the base, without distinct basal plate, almost symmetrical; aedeagus relatively short, transversely flattened just behind base, gently curved ventrally, not tapered in dorsal view and apex widely rounded; endophallic structure as Fig. 5 A – C; parameres asymmetrical; left one markedly larger than right one, widely rounded at apex and without apical seta.</p><p>Female genitalia. As in Fig. 6; female abdominal sternite VIII with four long setae on each lateral side and two groups of densely arranged fine setae near apex, as in Fig. 6 B; gonocoxites I – II elongate, gonocoxite II with two long setae at apex, as in Fig. 6 E.</p><p>Distribution.</p><p>Cambodia, Thailand</p><p>Etymology.</p><p>The new species is named after the Khmer word thom, meaning “ large ” or “ big ” (Khmer: ធ ំ). The epithet is treated as a noun in apposition and refers to the comparatively large size of the species within the genus.</p><p>Collecting circumstances.</p><p>The holotype was collected at night using a 15 W UV fluorescent lamp trap placed on the ground along a narrow forest path regularly used by walkers and motorbikes in Kep National Park, southern Cambodia. The paratype was collected at night at the 17 km point in Kaeng Krachan National Park, western Thailand, using a portable Nakase-system light trap (NLT) equipped with a 4 W UV fluorescent lamp, which was fixed or hooked on a tree at approximately 5 m above the ground, lit in the evening, and recovered the following morning. Host ant association could not be confirmed for either the holotype or the paratype.</p></div>	https://treatment.plazi.org/id/CF48E1815C8C5F08BAE69536970535A2	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Choi, Jong Bong;Nomura, Shuhei;Kwon, Taeyeong;Choi, Eunyoung;Park, Jong Kyun	Choi, Jong Bong, Nomura, Shuhei, Kwon, Taeyeong, Choi, Eunyoung, Park, Jong Kyun (2026): A new species of the myrmecophilous genus Cryptocephalomorpha Ritsema, 1875, from the Indochinese Peninsula (Coleoptera, Carabidae, Pseudomorphini). Deutsche Entomologische Zeitschrift 73 (2): 323-331, DOI: 10.3897/dez.73.192635
