Fangeilema, Volynkin & Saldaitis, 2023

Volynkin, Anton V. & Saldaitis, Aidas, 2023, Two new genera, two new subgenera, and four new species of Lithosiina from China and northern Indochina (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Ecologica Montenegrina 68, pp. 140-154 : 141

Genus Fangeilema gen. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:DF2BBAF9-A4B4-4613-AE8C-5310CB18833A

Type species: Strysopha lucida Fang, 2000 , by present designation.

Diagnosis. The new genus is similar to Wittia ( Figs 11, 12 , 27 ) in its male genitalia structure ( Figs 19–22 ) due to the setose distal saccular process but in Fangeilema gen. n., it is strongly dilated whereas it is slender and hook-like upcurved in Wittia . The vinculum of Fangeilema gen. n. is evenly U-shaped whereas in Wittia its lateral arms are subapically connected by a thin commissure. Additionally, the vesica of Fangeilema gen. n. lacks ornamentation whereas it bears several thorn-like robust cornuti in Wittia . Compared to another similar genus, Dolgoma Moore, 1878 ( Figs 15, 16 , 29 ), Fangeilema gen. n. has a thinner and distally tapered uncus (it is swollen and distally dilated in Dolgoma ), a markedly broader and distally dilated valva (it has almost parallel margins in Dolgoma ), a considerably larger and flattened distal saccular process (it is nodular in Dolgoma ), and a phallus having a carinal process. Additionally, the vesica of Dolgoma bears a lateral cluster of spinules which is absent in the new genus. The female genitalia of Fangeilema gen. n. ( Figs 31– 33 ) differ from Wittia ( Fig. 35 ) in the lack of the antevaginal plate ( Wittia has an extremely broad antevaginal plate occupying most of the 7 th sternite), and the membranous appendix bursae, which is strongly gelatinous and rugose in Wittia . In the female genitalia, the new genus is more similar to Dolgoma ( Fig. 37 ) but distinguished by the fully membranous appendix bursae whereas it is proximally weakly sclerotised and rugose in Dolgoma .

Etymology. The genus name is an aggregate of the surname Fang and the genus-group name Eilema Hübner, [1819] . The new genus is named after Dr Cheng-lai Fang, an author of the fundamental book on the Arctiinae fauna of China ( Fang 2000). Gender is feminine.

Figures

Figures 9–18. Adults of Kuatunittia (9, 10), and the type species of the corresponding genera: Wittia (11, 12), Pseudoscaptia (13, 14), Dolgoma (15, 16), and Teuloma (17, 18). Depositories of the specimens: 9 in WIGJ; 10 in MWM/ZSM; 11 and 12 in ANHRT; 13 and 14 in NHMUK (©The Trustees of NHMUK); 15 and 16 in CKC; 17 and 18 in CAV.

Figures 27–30. Lithosiina spp., male genitalia of the type species of the corresponding genera: Wittia (27), Pseudoscaptia (28), Dolgoma (29), and Teuloma (30). Depositories of the specimens dissected: 27 in ANHRT; 28 in NHMUK (©The Trustees of NHMUK); 29 in CKC; 30 in CAV.

Figures 19–22. Fangeilema, male genitalia. Depositories of the specimens dissected: 19 in NHMUK (©The Trustees of NHMUK); 20–22 in MWM/ZSM.

Figures 31–34. Fangeilema (31–33) and Kuatunittia, female genitalia. Depositories of the specimens dissected: 31 in NHMUK (©The Trustees of NHMUK); 32–34 in MWM/ZSM

Figures 35–38. Lithosiina spp., female genitalia of the type species of the corresponding genera: Wittia (35), Pseudoscaptia (36), Dolgoma (37), and Teuloma (38). Depositories of the specimens dissected: 35 in ANHRT; 36 in NHMUK (©The Trustees of NHMUK); 37 in CKC; 38 in CAV.