Patrus salvazai ( Ochs, 1940 )

Suksai, Benjamart, Gustafson, Grey T., Sites, Robert W. & Sangpradub, Narumon, 2021, Review of the Patrus landaisi species group from Thailand with description of three new species (Coleoptera, Gyrinidae), Zootaxa 4991 (3), pp. 561-591 : 582-584

publication ID

https://doi.org/ 10.11646/zootaxa.4991.3.8

publication LSID

lsid:zoobank.org:pub:F0FAE07E-4A90-4602-BCC5-6D80E158BB6C

persistent identifier

https://treatment.plazi.org/id/03BC87C1-FFFF-225C-0CC0-7E38FE79501B

treatment provided by

Plazi

scientific name

Patrus salvazai ( Ochs, 1940 )
status

 

Patrus salvazai ( Ochs, 1940)

( Figs. 2G View FIGURE 2 , 3G View FIGURE 3 , 4G View FIGURE 4 , 11 View FIGURE 11 , 13B, 13C, 13E, 13F View FIGURE 13 , 14B View FIGURE 14 )

Orectochilus cardiophorus Régimbart : Peschet 1923:125 (misidentification)

Orectochilus salvazai Peschet : Ochs 1930: 33 (nomen nudum)

Orectochilus salvazai Ochs, 1940: 19 (valid original description)

Type locality. ‘Sala-Nam-Pik’, Luang Prabang, Laos .

Material examined. THAILAND: Chiang Mai Province: Doi Inthanon Natl.Park., stream from Huai Sai Luang Waterfall , 18°31’N 98°27’E, 1060 m a.s.l., 8.V.2002, leg. UMC & CMU teams, L-396, 1 male ( THNHM) GoogleMaps , 2 females ( THNHM, UMC) GoogleMaps ; Doi Suthep Natl. Park., Monthathan Waterfall , 18°49’N 98°55’E, 700 m a.s.l., 14.II.2003, leg. CMU team, 1 female ( UMC) GoogleMaps ; Haow River, Sop Poeng Subdistrict, Mae Taeng District , 19°07’20.0”N 98°46’44.7”E, 505 m a.s.l., 8.I.2018, leg. B. Suksai, C. Yatfung & S. Yoolong, 1 male ( KKU) GoogleMaps . Chiang Rai Province: Nam Kuen Stream, Ban Huai Nam Kuen, Mae Chedi Subdistrict , Wiang Pa Pao District , 19°07’22.3”N 99°19’43.3”E, 1327 m a.s.l., 11.XI.2018, leg. B. Suksai, S. Kullasoot & P. Sapewisut, 1 male, 1 female ( THNHM) GoogleMaps ; Stream close to Ban Phithak Thai, Tap Tao Subdistrict , Thoeng District , 19°45’00.55”N 100°23’59.53”E, 1089 m a.s.l., 2.V.2019, leg. B. Suksai, P. Sapewisut & N. Plangklang, 1 female ( THNHM) GoogleMaps ; Stream close to Ban Thai Samakkhi, Tap Tao Subdistrict , Thoeng District , 19°44’13.3”N 100°24’02.2”E, 1299 m a.s.l., 28.V.2017, leg. P. Sapewisut, 1 male ( KKU) GoogleMaps , 2 females ( KKU, THNHM) GoogleMaps ; same locality except for, 10.XI.2018, leg. B. Suksai, S. Kullasoot & P. Sapewisut, 1 male, 2 females ( THNHM) GoogleMaps ; same locality except for, 2.V.2019, leg. B. Suksai, P. Sapewisut & N. Plangklang, 8 males ( KKU, THNHM) GoogleMaps , 2 females ( GTGC) GoogleMaps . Nan Province: Doi Phuka Natl. Park., creek at Namtok Ton Tong , 19°12’N 101°04’E, 900 m a.s.l., 13.III.2002, leg. CMU teams, 1 male, 1 female ( UMC) GoogleMaps ; Khun Sathan Natl. Park., Ban Khun Sathan, San Ta Subdistrict , Na Noi District , 18°16’24.12”N 100°29’10.80”E, 1474 m a.s.l., 30.V.2017, leg. P. Sapewisut, 3 females ( KKU, THNHM) GoogleMaps ; same locality except for, Ban Mueng Li, Mueng Li Subdistrict, Na Muen District , 18°15’08.44”N 100°29’35.77”E, 786 m a.s.l., 29.V.2017, leg. P. Sapewisut, 1 male ( KKU) GoogleMaps , 3 females ( KKU, THNHM) GoogleMaps ; same locality except for, Khun Sathan Watershed Management Station, San Ta Subdistrict, Na Noi District , 18°16’43.67”N 100°30’14.34”E, 1334 m a.s.l., 30.V.2017, leg. P. Sapewisut, 1 male ( THNHM) GoogleMaps ; same locality except for, Water supply Weir, Khun Sathan National Park , San Ta Subdistrict , Na Noi District , 18°16’42.06”N 100°30’26.95”E, 1356 m a.s.l., 30.V.2017, leg. P. Sapewisut, 2 males, 2 females ( KKU, THNHM) GoogleMaps ; Mae Charim Natl. Park., Huay Tao stream, Beside of Ban Nampang-Romklao Road , close to Huay Tao Ranger Station , 18°35’01.33”N 101°03’52.52”E, 898 m a.s.l., 2.I.2013, leg. K. Rattanachan, 1 female ( KKU) GoogleMaps .

Diagnosis. Size: Male: 12.0– 13.7 mm, female: 10.6–12.9 mm; body form in lateral view weakly dorsoventrally convex, more depressed anteriorly than posteriorly; elytral glabrous region of male ( Figs. 2G View FIGURE 2 , 11A View FIGURE 11 ) cordiform, along suture extending ca. 7/9 length of elytra, laterally expanded in anterior 2/3 to similar width as pronotal glabrous region, posterior 1/3 acuminate with weakly rounded margins; female elytral glabrous region ( Figs. 3G View FIGURE 3 , 11E View FIGURE 11 ) similar to male, except lateral expansion of glabrous region is stronger, surpassing lateral margin of pronotal glabrous region, apical acumination weaker; elytral apex of both sexes similar, weakly rounded in appearance, without apicolateral sinuation, epipleural angle indistinct; male protibia ( Fig. 4G View FIGURE 4 ) cleaver shaped, constricted in basal 1/2, protibial apex truncate with prominent distolateral angle; male protarsus ( Fig. 4G View FIGURE 4 ) ca. 1/2 length of protibia, protarsomeres width weakly decreasing apically; mesoventrite without medial pit; aedeagus ( Fig. 11B– D View FIGURE 11 ) with median lobe constricted medially, apex with rounded lateral margins, tip papilliform, in lateral view tip dorsally up-turned ( Fig. 11C View FIGURE 11 ); female reproductive tract ( Fig. 11G View FIGURE 11 ) without additional sclerotized structure between gonocoxae ( Fig. 11F View FIGURE 11 ), fertilization duct as in Fig. 11H View FIGURE 11 .

Differential diagnosis. Patrus salvazai is most similar to P. phetchabunensis sp. nov., but can be distinguished from it by the characters given in the differential diagnosis of the latter.

Distribution. This species was originally described from Luang Prabang Province with several additional records from Laos ( Peschet 1923; Ochs 1930). Ochs (1930) reported the first records of P. salvazai from Doi Prae Muang mountain in Chiang Mai Province, Thailand. Here we add additional localities for P. salvazai across the mountains of northern Thailand in Chiang Rai and Nan Provinces ( Fig. 14B View FIGURE 14 ). In Thailand, P. salvazai has been found coexisting with P. apicalis in streams at high elevations ( Fig. 13B View FIGURE 13 ) as well as with P. landaisi from a shallow stream with stagnant water or with slow current ( Fig. 13C View FIGURE 13 ). These two species were also found in puddles in a drying stream bed ( Fig. 13E–F View FIGURE 13 ).

Discussion. The name Orectochilus salvazai was first published by Ochs (1930) in his catalog of Indian insects, for specimens that Peschet (1923) misidentified as Orectochilus cardiophorus ( Régimbart, 1888) . This renders Orectochilus salvazai Ochs, 1930 a nomen nudum as it was not accompanied by a description. Ochs (1940, p. 19), explains later that he attributed the name O. salvazai to Peschet in both his prior checklist (1930) and present work (1940) because, subsequent to the aforementioned misidentification ( Peschet, 1923), Peschet had recognized that these specimens actually belonged to a new species he dubbed “ salvazai ” and had provided Ochs specimens identified as such. Because Peschet had not previously published a description of P. salvazai , when Ochs (1940) used the name Orectochilus salvazai and included both a description of the species, a differential diagnosis, and a mention of examined material, the name was made available and is attributable to him following Article 13.1 of The International Code of Zoological Nomenclature ( ICZN 1999), not Peschet. A similar situation surrounds the name Orectochilus peguensis ( Ochs, 1940) , another member of the P. landaisi group (see checklist here below), in that its first use is in Ochs’ 1930 catalog as O. cardiophorus peguensis (a nomen nudum) attributed to Peschet with the name being made available subsequently by the description given in Ochs (1940, p. 17) and is thus attributed to Ochs 1940, not Peschet.

KKU

Herbarium, Department of Biology, Khon Kaen University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Gyrinidae

Genus

Patrus

Loc

Patrus salvazai ( Ochs, 1940 )

Suksai, Benjamart, Gustafson, Grey T., Sites, Robert W. & Sangpradub, Narumon 2021
2021
Loc

Orectochilus salvazai

Ochs 1940: 19
1940
Loc

Orectochilus salvazai

Ochs 1930: 33
1930
Loc

Orectochilus cardiophorus Régimbart

Peschet, R. 1923: 125
1923
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