Chabulina astomalis (Felder & Rogenhofer, 1875)

Maes, Koen V. N., 2022, Studies on African Crambidae II: On the identity of Asopia onychinalis Guenée, 1954, its synonyms, generic placement and related species (Pyraloidea: Crambidae: Spilomelinae), Metamorphosis 33 (1), pp. 85-91 : 86-87

Chabulina astomalis (Felder & Rogenhofer, 1875)

Felder & Rogenhofer, 1875. Reise ost. Fregatte Novara (Zool.) Lep.(Het.) bd.2, abt. 2, pl. 135, Fig.22 ( Lepyrodes ) stat. rev., comb. nov.

= Nausinoe gueyraudi Guillermet, 2004 Nouv.Revue Ent. (N.S.) 20 fasc.4: 381 pl.1 Fig.5 , pl.3 Fig.2 syn.nov.

Type material examined:

Nausinoe gueyraudi Guillermet, 2004 : Reunion, Ste. Suzanne, 18.ix.1983, 25m (Edmond Gueyraud), Gen. slide nr. ♀ 1142 (Guillermet) (MNHN)

Lepyrodes astomalis Felder & Rogenhofer, 1875 : South Africa, Knysna (abdomen in gelatin vial) (NHM);

Additional material examined:

♂: CAMEROON, Centre Province , near Magong, SE of Yoko. Savannah-Rainforest edge, 05°23′38.5′′N; 012°30′48.4′′E. 732m . 15W Black MV Light. 9– 11.vi.2018. K. Maes, Gen. Prep.nr. ♂ 1859, ABSRC1000155 ; ♂: idem, ABSRC1000158 ; ♀: idem, ABSRC1000159 ; ♂: idem, ABSRC1000163 ; ♂: idem, ABSRC1000168 ; ♂: idem but 5–9.vi.2017. K. Maes, ABSRC1000840 ; ♂: idem but 30.vi.2019 to 6.vii.2019. K. Maes, ABSRC1000605 ; ♂: idem but 750m, 5–9.vi.2017. K. Maes, ABSRC1000849 ;

♂: CAMEROON, Centre Province , Yaoundé, Mt. Phébé, 1070m. 8.viii.1993. K. Maes Gen. Prep. nr . ♂ 1858, ABSRC1000604 ;

♂: CAMEROON, Centre Province , Batchenga. 19.vii.1993. K. Maes, ABSRC1002462 ;

♀: CAMEROON, South West Province , Mundemba Korup National Park. 27.ii.1989. K.Maes, ABSRC1000842 ;

♂: CAMEROON, South Province , near Ebogo village, fresh clearing near edge of secondary forest, 03°24′31.9′′N; 11°29′30.2′′E. 670m . MV Light. 14– 15.xii.2014. K. Maes, ABSRC1000841 ;

♂: CAMEROON, Northern Province , Hippo Camp , on border Faro River near Faro National Park, 8°23′36.4′′N; 12°49′26.03′′E. 297m . Black/MV Light. 21.vi.2019. K. Maes, K. Maes Gen.Prep.nr. ♂ 1861, ABSRC1001260 ;

♂: CAMEROON, Eastern Province , Dja reserve Schouam Rock 16–19.iv.1993 K. Maes, ABSRC1002461 ;

♂: CAMEROON, Dschang 1400m, 27.iii.1988 K. Maes, ABSRC1002464 ;

♂: CAMEROON, East Province , near Lokomo. 02°44′26.64′′N; 15°25′17.92′′E. 446m . MV Light. 10– 15.vii.2007. K. Maes, ABSRC1002465 ;

♂: KENYA, Rift Valley , Nguruman Escarpment. 01.45°S; 36.02°E. 750m . MV Light. 18.vi.1998. K. Maes, ABSRC1000843 ; ♂: idem, ABSRC1000844 ; ♂: idem, ABSRC1000845 ; ♀: idem, ABSRC1000846 ; ♀: idem, ABSRC1000847 ; ♀: idem, ABSRC1000848 ; ♂: idem, Gen.Prep. nr . ♂ 1133, ABSRC1000850 ; ♀: idem, Netted in flight. Gen.Prep. nr . ♀ 1856, ABSRC1000601 ;

♂: KENYA, Rift Valley , Matthews Range, Ngeng River. 01.15°N; 37.15°E. 4200ft. MV Light. 14.vi.1998. leg. S. Collins, ABSRC1002466 ;

♂: KENYA, Rift Valley , Marich Pass Field Station area. 01°32′10′′N; 35°27′23.3′′E. 966m . Black MV Light. 20.xi.2002. K. Maes, ABSRC1002467 ;

♂: KENYA, Rift Valley, Samburu Nature Reserve near Uaso Nyiro river , Intrepid Camp. 0°34′34,8′′N; 37°39′36′′E. 910m . Black MV Light. 13–14.xii.2002. K. Maes, ABSRC1002468 ;

♂: KENYA, Rift Valley , Marich Pass Field Station area. 01°32′10′′N; 35°27′23.3′′E. 966m . Black MV Light. 20.xi.2002. K. Maes, ABSRC1002469 ;

♂: ♀: KENYA, Coast, Taita Discovery Centre , Makaramba. 03°40′22′′S; 38°45′44′′E. 495m . Black MV Light. 03.vi.2000. K. Maes, ABSRC1000839 ;

♂: SOUTH AFRICA, Limpopo, Waterberg , Groenfontein. 30.xi.2004. leg. W. Mey, ABSRC1002463 .

Description:

Head: Frons rounded, maxillary palps close to base of labial palps, upturned, black at the base, terminal segment white; labial palps upturned, white with a black streak at the base of the first and second segment; antenna filiform. Thorax: Forewings narrowly triangular with a complicated wing pattern consisting of black lines on a white or whiteyellowish background: antemedian line consisting of two lines: the inner one straight towards the inner margin, outer line forming a large U-shaped line continuing in the reniform stigma and costa, between the lines same color as ground color; postmedian line rather large at costa; hind wing with well represented ante- and postmedian black lines and a series of black spots in the postmedian fascia.

Abdomen: White with some black scaling dorsally forming a large “O” and some white scaling limiting the distal edge of the tegumen of each segment.

Wingspan: 17–21mm.

Tympanal organs: Invaginated.

Male genitalia: ( Figs 1–3 ) Typical Glyphodes type genitalia: distal part uncus slender, ventrally with long setae, ventral part long slender on a wide tegumen, ventrally as a U-shaped structure with a wide saccus. Valva rounded, rather short, membranous, sacculus with a simple fibula. Valva a bit wider than C. onychinalis and with a fibula slightly longer; Aedeagus tubular, one part sclerotized over its longitudinal length, vesica membranous, cornutus lacking.

Female genitalia: ( Figs 7 & 9 ) Papillae anales with short and long setae; apophyses posteriores and anteriores: narrow, well sclerotized; apophyses anteriores almost twice the length of the apophyses posteriores: ostium wide, calyx-shaped; ductus bursae half width of corpus bursae; the latter long ovoid with a simple bilobed signum composed of multiple small sclerotisations.

Distribution: The species is restricted to the African continent. At present no specimens have been collected from the African islands Madagascar, Comores.

Host plant: unknown.

Diagnosis:

This species is removed from synonymy with Asopia onychinalis Guenée, 1854 and is considered here as a valid species. Ground colour black and white without any yellow scaling; male genitalia with a simple vesica, cornutus lacking; female genitalia with an ostium as wide as deep.

Figures

Figure 1 – Chabulina astomalis male genitalia ♂1133

Figure 2 – Chabulina astomalis male valva ♂1133

Figure 3 – Chabulina astomalis male aedeagus left complete; right detail ♂1133

Figure 5 – Chabulina onychinalis male valva ♂1064

Figure 7 (left) – C. astomalis female genitalia ♀1856. Figure 8 (right) – C. onychinalis female genitalia ♀1860.

Figure 9 (left) – C. astomalis female detail sinus vaginalis ♀1856. Figure 10 (right) – C. onychinalis detail sins vaginalis ♀1860.