Orthomorpha cambodjana
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Ordo: Polydesmida
Familia: Paradoxosomatidae
Genus: Orthomorpha
Name
Orthomorpha cambodjana (Attems, 1953) – Wikispecies link – Pensoft Profile
- Pratinus cambodjanus Attems 1953[1]: 168 (D).
- Orthomorpha cambodjana – Jeekel 1963[2]: 265 (M); 1964[3]: 361 (M, D); 1968[4]: 56 (M); Hoffman 1977[5]: 700 (M); Golovatch 1998[6]: 42 (M, D); Likhitrakarn et al. 2011[7]: 66 (D).
Material examined
2 ♂ (CUMZ), Laos, Attapu Province, Xaysetha District, Ban Kasom, 116 m a.s.l., 15°06'27"N, 106°51'14"E, 16.10.2013, leg. C. Sutcharit and W. Siriwut.
Descriptive notes
Length 32–35 mm (♂), width of midbody pro- and metazona 2.6–2.7 and 3.8–3.9 mm (♂), respectively.
Coloration in alcohol, after one month of preservation, blackish (Fig. 4A–F), paraterga and epiproct light yellow to whitish yellow; venter, legs and antennae whitish to pale brown distally (Fig. 4A–I). Antennae reaching segment 3 when stretched dorsally. Paraterga very strongly developed (Fig. 4A–G), anterolateral edge clearly convex. Calluses on paraterga 2 and 3 delimited by a sulcus only dorsally, following paraterga by a sulcus both dorsally and ventrally, strongly bordered. Pleurosternal carinae complete crests only in segment 2 (Fig. 4B, D, E), a small, sharp, caudal tooth in segments 3–7, a very faint tubercle until segment 15. Legs long and slender, midbody ones ca 1.1–1.3 times as long as body height, prefemora without modifications, tarsal brushes present until ♂ leg 7.
Gonopod solenophore with a tridentate tip (Figs 5, 6), dorsalmost prong being subacuminate, longer than both others, whereas middle denticle shortest and pointed.
Remarks
This species has hitherto been known only from a ♂ lectotype and a ♀ paralectotype, currently both rather strongly faded, taken at Sre-Umbell, Kampot Province, southern Cambodia (Attems 1953[1], Likhitrakarn et al. 2011[7]). The above fresh samples show only slight variations, mainly a darker coloration, as opposed to the types which have recently been redescribed in due detail (Likhitrakarn et al. 2011[7]). This species is thus new to the fauna of Laos, suggesting a far wider distribution in Indochina.
Taxon Treatment
- Likhitrakarn, N; Golovatch, S; Panha, S; 2014: The millipede genus Orthomorpha Bollman, 1893 in Laos (Diplopoda, Polydesmida, Paradoxosomatidae), with descriptions of new species ZooKeys, 374: 1-22. doi
Other References
- ↑ 1.0 1.1 Attems C (1953) Myriopoden von Indochina. Expedition von Dr. C. Dawydoff (1938–1939). Mémoires du Muséum national d’ Histoire naturelle, série A, Zoologie 5(3): 133-230.
- ↑ Jeekel C (1963) Paradoxosomatidae from Borneo (Diplopoda, Polydesmida). Tijdschrift voor Entomologie 106: 205-283.
- ↑ Jeekel C (1964) A new species of Orthomorpha Bollman from Thailand observed in migration, with taxonomic notes on the genus (Diplopoda). Tijdschrift voor Entomologie 107: 355-364.
- ↑ Jeekel C (1968) On the classification and geographical distribution of the family Paradoxosomatidae (Diplopoda, Polydesmida). Academisch Proefschrift (PhD Thesis, privately published), Rotterdam, 162 pp.
- ↑ Hoffman R (1977) Diplopoda from Malayan caves, collected by M. Pierre Strinati. Revue suisse de Zoologie 84(3): 699-719.
- ↑ Golovatch S (1998) On several new or poorly-known Oriental Paradoxosomatidae (Diplopoda Polydesmida), VI. Arthropoda Selecta 6(3–4): 35–46 [for 1997].
- ↑ 7.0 7.1 7.2 Likhitrakarn N, Golovatch S, Panha S (2011) Revision of the Southeast Asian millipede genus Orthomorpha Bollman, 1893, with the proposal of a new genus (Diplopoda, Polydesmida, Paradoxosomatidae). ZooKeys 131: 1-161. doi: 10.3897/zookeys.131.1921
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