Bucsekatha chonga, Volynkin & Černý, 2025

Volynkin, Anton V. & Černý, Karel, 2025, On the taxonomy of the Brunia Moore generic complex with the description of a new genus, a new subgenus and four new species (Lepidoptera: Erebidae: Arctiinae: Lithosiini: Lithosiina), Ecologica Montenegrina 87, pp. 46-76 : 53-54

Bucsekatha chonga sp. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:8363573B-8E8E-4CCE-9803-11CDF953AB01

( Figs 28–32 , 70–75 , 101–103 )

Type material. Holotype ( Figs 28 , 70 ): male, “ Cambodia, Kampot Prov., | Bokor N.P., Hill Station , 1025 m, | 19–21. I. 2006 | leg. G. Csorba & G. Ronkay ” / “Slide | ZSM Arct. | 2021- 520♂ | A. Volynkin ” ( MWM / ZSM).

Paratypes. CAMBODIA: 1 male, 2 females, same data as in holotype, gen. slide No.: ZSM Arct. 2021 - 521♀ (prepared by A. Volynkin) ( MWM / ZSM) ; 1 male, 1 female, Kirirom Nat. Res. , 650m, 7–9.XI.2007, S. Murzin leg., gen. slide Nos: ZSM Arct. 2021 - 597♂, 2021- 598♀ (prepared by A. Volynkin) ( MWM / ZSM) ; THAILAND: 2 males, 2 females, Saraburi [Nakhon Nayok Prov.], Khao Yai NP, Mt. Khao Kaew [Khao Khiao], 1244m, 14°21'56''N 101°24'E, 31.V.2005, K. Černý leg., gen. slide Nos: AV8278 ♂, AV8284 ♂, AV9155 ♀, AV9173 ♀ ( CKC) ; 4 males, 1 female, Saraburi [Nakhon Nayok Prov.], Khao Yai NP, Khao Khieo [foot of Khao Khiao Mt.], 752m, 14°24'20''N 101°22'14''E, 1.VI.2005, K. Černý leg., gen. slide Nos: AV8279 ♂, AV8283 ♂, AV9154 ♀ ( CKC) ; 2 males, Chanthaburi Prov., 150m, 33 km N of Chanthaburi , 12°48.17'N 102°17.53'E, 30.X.2010, K. Černý leg., gen. slide Nos: AV8285 ♂, AV9179 ♂ ( CKC) .

Diagnosis. The forewing length is 11.0–13.0 mm in males and 14.0–15.0 mm in females. The male genitalia of B. chonga sp. n. are similar to B. sunda sp. n. but distinguished by the shorter and thinner distal saccular process, the broader and more heavily sclerotised lobes of the caulis, the markedly larger carinal process, and the smaller medial cornutus. The female genitalia of B. chonga sp. n. differ from B. sunda sp. n. in the considerably broader ductus bursae and the somewhat more anteriorly curved sclerotised anterior section of the corpus bursae.

Distribution. The new species is found in Central and Southeast Thailand (Nakhon Nayok and Chanthaburi Provinces) and Southwest Cambodia (Kampot and Kampong Speu Provinces).

Etymology. The specific epithet is derived from the Chong people, who inhabit western Cambodia, and south-eastern and eastern Thailand. The name is a noun in the nominative singular.

Figures

Figures 19–35. Adults of Brunia (19–21) and Bucsekatha gen. n. (22–35) spp. Depositories of the specimens: 19– 21, 25, 27, 31 and 32 in CKC; 22–24, 26, 28–30 and 33 in MWM/ZSM (24 and 30: ex CKC); 34 and 35 in CAV.

Figures 70–73. Male genitalia of Bucsekatha gen. n. spp. Depositories of the specimens dissected: 70, 71 and 73 in MWM/ZSM (73: ex CKC); 72 in CKC.

Figures 74–77. Male genitalia of Bucsekatha gen. n. spp. Depositories of the specimens dissected: 74 and 75 in CKC; 76 in MWM/ZSM; 77 in CAV.

Figures 101–106. Female genitalia of Bucsekatha gen. n. (101–105) and Sany (106) spp. Depositories of the specimens dissected: 101, 102 and 106 in MWM/ZSM; 103 in CKC; 104 and 105 in CAV.