Crocosia divisa ( Gaede, 1924 ), 2024

Volynkin, Anton V., 2024, On the taxonomy of the Afrotropical genus Crocosia Hampson with descriptions of a new genus and a new species (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Ecologica Montenegrina 78, pp. 47-64 : 56-57

Crocosia divisa ( Gaede, 1924) , stat. rev.

( Figs 4–6 , 18, 19 , 31 )

Ilema divisa Gaede, 1924 , Mitteilungen aus dem Zoologischen Museum in Berlin , 11 (2): 238 (Type locality: [ Cameroon] “Kamerun”).

Eilema phaeocraspis : Kiriakoff (1958: 11); de Toulgoët (1977: 69).

Ilema mesosticta : Kühne (2008: 157).

Type material examined. Holotype (by monotypy) ( Figs 4 , 18 ): ♂, blue label “Kamerun [ Cameroon, South Region] | Akoafim [ca. 02°21'N 12°56'E] | 1914 [amended from 1913] | Tessmann S.G. ” / red label “Type” / “ Fundort | unsicher!” [Locality | uncertain!] / “846” / “divisa Gaede ”, gen. prep. No. MfN-0387 (prepared by Volynkin) ( MfN).

Additional material examined. CAMEROON: 1 ♀, 900m, North Region, Wack (La Falaise), 07˚40'16.5''N, 13˚33'18.4''E, 2–21.x.2018, general coll., Sáfián, Sz., Simonics, G. leg., gen. prep. No.: AV8596 ♀ ( ANHRT) ; GABON: 33 ♂♂, 25 ♀♀, 430m, Mikongo (Rougier), Monts de Cristal (secondary forest), 0˚29'47''N, 11˚10'42''E, 28.vii.–12.viii.2019, MV , actinic & LepiLED light traps, Albert, J.-L., Aristophanous, M., Bie Mba, J., Dérozier, V ., Moretto, P. leg., gen. prep. Nos.: AV6924 ♂, AV6925 ♂, AV7068 ♀, AV7285 ♂; 3 ♂♂, 6 ♀♀, 185m, Dilo ANPN camp, Ivindo (secondary forest), 0˚14'1''S, 12˚17'49''E, 14–19.viii.2019, LepiLED light trap, Albert, J.-L., Aristophanous, M., Bie Mba, J., Dérozier, V ., Moretto, P. leg., gen. prep. Nos.: AV8574 ♀, AV8592 ♀, AV8594 ♂, AV8597 ♀ (all in ANHRT) ; REPUBLIC OF CONGO, NNNP : 1 ♂, 1 ♀, 352m, Ndoki formation camp, 02°12'48.5''N, 16°23'45.6''E, 23.vi.2022, MV light trap, Dérozier, V . leg.; 1 ♂, 2 ♀♀, 352m, Mombongo camp (moist mixed forest), 02°10'30.7''N, 16°08'37.7''E, 28.vi.2022, MV light trap, Dérozier, V . leg.; 3 ♀♀, 365m, Mondika camp, 02°21'50.63''N 16°16'25.82''E, 07–14.ii.2023, MV light trap, Bakala, N., M., Dérozier, V ., Kirk-Spriggs , A., László, G. leg. ; 1 ♂, 1 ♀, 380m, Bomassa (secondary forest), 02°12'25.7''N, 16°11'39.1''E, 18–22.vi.2022, act. light trap, Dérozier, V . leg.; 1 ♂, 2 ♀♀, 358m, Bomassa forest (secondary forest), 02°11'58.1''N, 16°11'16.9''E, 17–23.ix. 2022, LepiLED L. T ., Dérozier , V ., Fouka, B., Kirk-Spriggs , A., Takano, H. leg. ; 1 ♀, 341m, Bomassa camp (secondary forest), 02°12'36.9''N 16°11'30.2''E, 10–16.x.2022, LepiLED light trap, Dérozier, V ., Fouka, B., Kirk-Spriggs , A., Takano, H. leg. ; 1 ♀, same locality but 6–14.v.2023, MV light trap, Dérozier, V ., Kirk-Spriggs, A., László , G., Mvouende, S. leg. ; 2 ♂♂, 3 ♀♀, 370m, Mbeli camp (moist mixed forest), 02°12'48.5''N, 16°23'45.6''E, 25.vi.2022, MV light trap, Dérozier, V . leg.; 1 ♂, 311m, Mombongo baï (marshland), 02°10'14.4''N 16°08'27.9''E, 28.vi.2022, actinic light trap, Dérozier, V ., Mékounou, P. leg.; 1 ♀, 375m, Mbeli baï (swamp forest), 02°15'30.4''N, 16°24'39.5''E, 25.vi.2022, actinic light trap, Dérozier, V . leg.; 6 ♂♂, 1 ♀, 372m, Mbeli camp ( Gilbertiodendron forest), 02°14'23.8''N, 16°23'52.1''E, 1–10.x.2022, MV & actinic light traps, Dérozier, V ., Fouka, B., Kirk-Spriggs , A., Takano, H. leg., gen. prep. No.: AV8593 ♂; 1 ♀, same locality but 14–20.ii.2023, Bakala, N., M., Dérozier, V ., Kirk-Spriggs , A., László, G. leg. (all in ANHRT) ; UGANDA: 2 ♂♂, Kibale National Park , biol. field station, 19–24.xi.2014, light trap, W. Mey leg. ( MfN) ; 1 ♂, 1 ♀, Ruwenzori Range, Semliki Forest , 2,850 ft., 22.viii.–3.ix.1952, D.S. Fletcher leg. / Ruwenzori Exped. B.M. 1952-566, unique ID: NHMUK 014173062 , gen. prep. Nos.: NHMUK014331135 (♂) (prepared by Volynkin) , Arctiidae 43 (♀) ( NHMUK) ; KENYA: 1 ♀, Western, Kakamega Forest, Rondo Retreat , 00°13'37''N 34°53'06''E, 1610m, Black / MV lights, 27.vii.2001, K. Maes leg. ( ANHRT) .

Note. The type locality of the species, Akoafim is an abandoned German colonial town situated north of the Aïna River ( Eckert 1912) .

Diagnosis. The forewing length is 10.0– 12.5 mm in males and 11.5–13.5 mm in females. Crocosia divisa is superficially very similar to the allopatric C. phaeocraspis and a detailed comparison is provided above in the diagnosis of the latter species.

Distribution. The species is currently known from Cameroon, Gabon, Republic of Congo, Uganda, and western Kenya. It is also present in Democratic Republic of Congo based on a photograph examined of a specimen in RMCA (accessed at https://virtualcol.africamuseum.be). Kühne’s (2008, as Ilema mesosticta ) record from Nigeria is highly likely based on the type locality of Cragiosia mesosticta , although it’s occurrence in southeastern Nigeria cannot be ruled out.

Figures

Figures 1–8. Adults of Crocosia (1–6) and Cragiosia gen. n. (7, 8) spp. Depositories of the specimens: 1 and 8 in NHMUK; 2, 3 and 5–7 in ANHRT; 4 in MfN.

Figures 17–19. Male genitalia of Crocosia spp. Depositories of the specimens dissected: 17 and 19 in ANHRT; 18 in MfN.

Figures 30–35. Female genitalia of Crocosia (30, 31), Cragia (32), and Cragiosia gen. n. (33–35) and spp. Depositories of the specimens dissected: 30–32 and 34, 35 are in ANHRT; 33 in NHMUK.