Oligotoma humbertiana ( Saussure 1896 )

Lucañas, Cristian C. & Lit, Ireneo L., 2018, Oligotomidae (Insecta: Embioptera) of Mt. Makiling, Los Baños, Philippines, with description of a new species, Zootaxa 4415 (1), pp. 173-182 : 178

publication ID

https://doi.org/ 10.11646/zootaxa.4415.1.9

publication LSID

lsid:zoobank.org:pub:82700842-4FB1-45D9-B954-F20D0A54103B

DOI

https://doi.org/10.5281/zenodo.5958108

persistent identifier

https://treatment.plazi.org/id/0C333821-FFDB-FF9B-FF4C-FCD4FD39F788

treatment provided by

Plazi

scientific name

Oligotoma humbertiana ( Saussure 1896 )
status

 

Species Oligotoma humbertiana ( Saussure 1896) View in CoL

Fig. 3 View FIGURE 3

Embia humbertiana Saussure 1896: 353 View in CoL (Holotype: Ceylon (now Sri-Lanka), Museum d‟Histoire Naturelle, Geneva). Oligotoma humbertiana: Davis 1939: 186 View in CoL ; Ross 1940: 674; Ross 1944: 496; Ross 1955: 6; Ananthasubramanian 1956: 226; Kapur and Kripalani 1957: 120; Bradoo 1971: 264; Ross 1978: 6; Ross 2006: 341; Poolprasert 2012: 410; Chandra and Dawn 2014: 1565.

Material examined. 3 males, 3 females, Philippines: Luzon: Los Baños , Laguna ; on Sweetenia macrophylla King , 15-iii-2014 (C.C.Lucañas, UPLBMNH EMB-00006♂); on Roystonea regia (Kunth) O.F.Cook , 15-i-2014 (C.C.Lucañas, UPLBMNH EMB-00009♂); on Cynometra ramiflora L., 9-viii-2014 (C.C.Lucañas, UPLBMNH EMB-00017♂ - 00018♀); on Cassia fistula L., 25-vi-2014 (C.C.Lucañas, UPLBMNH EMB-00019♀); on Pterocarpus indicus Willd. , 27-vi-2014 (C.C.Lucañas, UPLBMNH EMB-00020♀)

Distribution: Indian in origin, now widespread.

Diagnosis: Oligotoma humbertiana is distinguished from other Oligotoma species by the small apical process on the narrow, curved 10RP and the bifid 10LP.

Description: Size (mm): ♂ BL: 7.9 ± 0.74; HL × HW: 1.2 ± 0.06 x 1.0 ± 0.15; OR: 0.36 ± 0.01 Fw: 4.1 ±0.1; Hw: 4.6 ± 0.36. ♀ BL: 7.9 ± 0.74; HL × HW: 1.2 ± 0.06 x 1.1 ± 0.06.

Alate male ( Fig. 3A View FIGURE 3 ) varying from light to dark brown. Antennae filiform, covered with setae. Mandibles conspicuous. Incisor darkly pigmented, three on left, two on right. Submentum semiquadrate, with anterior side deeply convex ( Fig. 3C View FIGURE 3 ). Pronotum concolorous with abdomen. Hind basitarsus with single papilla ( Fig. 3D View FIGURE 3 ). Abdomen black-brown. Terminalia ( Figs. 3E, F View FIGURE 3 ): LCB laterally elongate, encircling inner sides of LC. 10LP broad basally narrowing and curving leftward, with minute bifurcated teeth. 10RP with distinct subapical process. H broad basally. HP narrowing to blunt edge. LPPT narrow horizontal hook.

Female ( Fig. 3B View FIGURE 3 ) generally dark brown to black. Head sometimes reddish. Hind basitarsus with single papilla. Sternite 8 mostly unpigmented with U–shaped pigment medially and posterolateral markings ( Fig. 3G View FIGURE 3 ). Sternite 9 unpigmented anteriorly with anteromedial and lateral macula ( Fig. 3G View FIGURE 3 ).

Remarks. Oligotoma humbertiana is considered a “weed” species and has been introduced to the Philippines and other countries such as Mexico via the Manila Galleon trade ( Ross 1984), China, Indonesia ( Ross 2000), Hongkong, Mariana Islands, Taiwan and Thailand ( Poolprasert 2012).

The observed specimens agree with the previous descriptions of the species except for specimens described by Chandra & Dawn (2014) from India, which greatly differ in the curvature of 10RP; other than that character other structures are similar. It is possible that the Chandra & Dawn specimens represent a different subspecies of O. humbertiana or a completely different species.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Embioptera

Family

Oligotomidae

Genus

Oligotoma

Loc

Oligotoma humbertiana ( Saussure 1896 )

Lucañas, Cristian C. & Lit, Ireneo L. 2018
2018
Loc

Embia humbertiana

Saussure 1896 : 353
Davis 1939 : 186
Ross 1940 : 674
Ross 1944 : 496
Ross 1955 : 6
Ananthasubramanian 1956 : 226
Kapur and Kripalani 1957 : 120
Bradoo 1971 : 264
Ross 1978 : 6
Ross 2006 : 341
Poolprasert 2012 : 410
Chandra and Dawn 2014 : 1565
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