Caystrus dubius (Distant, 1921) Salini & Kment, 2021

Salini, S. & Kment, Petr, 2021, The genera Agathocles and Surenus (Hemiptera: Heteroptera: Pentatomidae) tribal reassessment, redescription, new synonyms, and description of two new species, Zootaxa 4958 (1), pp. 510-559 : 543

publication ID

https://doi.org/ 10.11646/zootaxa.4958.1.31

publication LSID

lsid:zoobank.org:pub:9E63F8E2-1CCA-4F58-9019-39AE7A3D0640

DOI

https://doi.org/10.5281/zenodo.4711375

persistent identifier

https://treatment.plazi.org/id/038587F4-6802-FFC0-4E8D-6334FEDDF8BD

treatment provided by

Plazi

scientific name

Caystrus dubius (Distant, 1921)
status

comb. nov.

Caystrus dubius (Distant, 1921) , comb. nov.

( Figs 125–129 View FIGURES 125–129 )

Agathocles dubius (unavailable): Distant (1921a): 4 (list).

Agathocles dubius Distant, 1921b: 42–43 (original description). Holotype: ♀, Laos, Luang Prabang, Van Nham (BMNH). Agathocles dubius: Hoffmann (1935) : 89 (catalogue); Rider (1997): 402 (checklist).

Type locality. Laos, Luang Prabang Province, Van Nham .

Type material examined. Holotype: ♀, ‘Luang Prabang, / Van Nham. / 16. III.1918. / R. V.de Salvaza [p] / Indo China. / R. V.de Salvaza. / 1918‒1 [p] // Type / H. T. [p, round label with red frame marginally] // BRIT. MUS. / TYPE No. / HEM. [p] 916 [hw, pink label] // Agathocles / dubius / typus Dist. [hw] // Re-pinned / on stainless [p] // CAYSTRUS / DUBIUS (Dist.) [hw] / det. P. KMENT 2015 [p]’ ( BMNH). The holotype is 14.63 mm long, pronotum width across humeral angles 6.71 mm. It is pinned, left metatarsus, right mesotarsus and both distiflagellomeres ( IV) are missing.

Distribution. Laos ( Distant 1921b).

Taxonomy. Examination of the holotype and its comparison with species of Agathocles and Caystrus revealed that it markedly differs from the first genus and fits well the second one, especially in having the body short, more regularly oval and relatively flat, head relatively short, mandibular plates not expanded forward and strongly narrowing anteriad, pronotum with sharp margins, and pale brown dorsal colouration with longitudinal yellowish unpunctured lines along corial veins (cf. Figs 125–126 View FIGURES 125–129 ). Therefore, we transfer this species to the genus Caystrus , resulting in a new combination: Caystrus dubius (Distant, 1921) , comb. nov. We did not find any important differences between C. dubius and C. obscurus , but we leave the decision on their synonymy for a furure revision of Caystrus .

R

Departamento de Geologia, Universidad de Chile

V

Royal British Columbia Museum - Herbarium

T

Tavera, Department of Geology and Geophysics

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Pentatomidae

Genus

Caystrus

Loc

Caystrus dubius (Distant, 1921)

Salini, S. & Kment, Petr 2021
2021
Loc

Agathocles dubius

Distant, W. L. 1921: 4
1921
Loc

Agathocles dubius

Rider, D. A. 1997: 402
Distant, W. L. 1921: 43
1921
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