Hampsonascia saldaitisi, Volynkin & Černý, 2021

Volynkin, Anton V. & Černý, Karel, 2021, Restoration of the genus Hampsonascia Volynkin (Lepidoptera: Erebidae: Arctiinae: Lithosiini) with descriptions of five new species, Zootaxa 5067 (1), pp. 82-96 : 89-95

Hampsonascia saldaitisi sp. n.

( Figs 11–13 , 29 , 38 )

Type material. Holotype ( Figs 11 , 29 ): male, “ 3–14.VIII.2013, Central Vietnam, Thừa Thiên Huế Province, Annamite Range, Bạch Mã NP, 1400m, local collector leg.”, gen. prep. No.: AV6406 (prepared by Volynkin) (MWM/ ZSM, ex CAV).

Paratypes. VIETNAM: 12 males, 4 females, the same data as in the holotype, gen. prep. Nos.: AV6404, AV6405 (males), AV6407, AV6408 (females) (prepared by Volynkin) ( CAV) ; 1 male, 1 female, IX.2013, Da Nang Province, Ba Na Mt. , 1450m, local collector leg., gen. prep. No.: AV1635 (male) (prepared by Volynkin) ( CAV) ; 1 female, the same locality and collector but VIII.2014 ( CAV) ; 1 male, Bạch Mã Nat. Park , 1200m, 16°10’N, 107°54’E, 26.VII.–6.VIII.1996, Sinyaev & Afonin leg., ex coll. Schintlmeister, gen. prep. No.: ZSM Arct. 2019-732 (prepared by Volynkin) (MWM/ ZSM) .

Diagnosis. The forewing length is 8.5–9.5 mm in males and 10.5– 11 mm in females. The new species differs externally from its congeners in the yellowish pink medial area of the forewing and the somewhat less curved medial line. The male genital capsule is similar to that of H. aulaca sp. n. but differs clearly in the longer valva (in proportion to the tegumen-vinculum complex length) with a wider and rounded distal costal process which is narrowly triangular and apically pointed in H. aulaca sp. n. Additionally, the sacculus of H. saldaitisi sp. n. is less setose than in H. aulaca sp. n. and the distal saccular process is distally tapered and apically pointed (rounded in the congener). The vesica of H. saldaitisi sp. n. is markedly narrower than in H. aulaca sp. n., bears smaller clusters of shorter spines and has a bilobate distal diverticulum which is unilobate in the congener. The female of H. aulaca sp. n. is unknown therefore the female genitalia of H. saldaitisi sp. n. can be compared only with those of species of the dentifascia species-group. The ductus bursae of the new species is longer and narrower than those of the dentifascia species-group, the posterior section of the corpus bursae is more heavily sclerotized laterally, and the medial section of the corpus bursae bears larger spinules. The appendix bursae of H. saldaitisi sp. n. is broader than those of the dentifascia species-group and bears larger spinules medially and inwardly while the outer margin is membranous (whereas it is spinulose medially and distally in the dentifascia species-group).

Distribution. The new species is known from Central Vietnam (Thừa Thiên Huế and Da Nang Provinces).

Etymology. The species is named after Dr Aidas Saldaitis (Vilnius, Lithuania), an expert in Asiatic Noctuoidea and senior author’s friend.

Figures

FIGURES 9–16. Hampsonascia (9–14) and Sesapa (15–16) spp.: adults. Depositories of the specimens: 9–11, 14 and 16 in MWM/ZSM (11 ex CAV); 12 and 13 in CAV; 15 in NHMUK (©The Trustees of NHMUK).

FIGURES 27–30. Hampsonascia spp.: male genitalia. The specimens dissected are deposited in MWM/ZSM (28 and 29: ex CAV).

FIGURES 35–38. Hampsonascia spp.: female genitalia. Depositories of the specimens dissected: 35 in NHMUK (©The Trustees of NHMUK); 36 in CKC; 37 in MWM/ZSM; 38 in CAV.