Acrobasis obliqua (Zeller, 1847)

Özyolci, Büşra & Çalişkan, Selma Seven, 2024, Morphological comparison of tympanal organs between Phycitinae and Pyralinae (Lepidoptera: Pyralidae), Zootaxa 5463 (1), pp. 127-136 : 131

Acrobasis obliqua (Zeller, 1847)

Image ( Fig. 2h ): The larvae are monophagous on Cistaceae . This species is known as a parasite on fruits and the wingspan of the adults is 23mm. The antennae are serrate. The undersides of the forewings are pale grey and covered with white and yellow scales. There is a black, red, or white colored line on the middle of the forewing. The fringes are greyish in color. There is a zigzag cream-colored line near the side of the fringe. Rear wings are greybrown, and the fringes are light-greyish in color

Tympanal organ ( Figs. 3h , 4h ): Bulla tympani is closed and concave. The tympanum and conjunktivum are on the same plane. Tympanum has an oval shape and the spinula structure on top of it is prominent. The conjunktivum has an elliptical shape. The rugae odontinae structure is prominent. The fornix tympani is thick. The pons tympani is fork-shaped. The tergo-sternal sclerite is long and curved. The zona glabra tympani is wide. The processus spiniforme has a triangular shape. Venula secunda is elongated shortly.

Figures

FIGURE 2. Top views of pyralid images. a. Pyralis farinalis b. Hypsopygia glaucinalis c. Endotrichia flammealis d. Dioryctria pineae e. D. mendacella f. Oncocera semirubella g. Etiella zinckenella h. Acrobasis obliqua i. Myelois circumvoluta j. Ematheudes punctellus.

FIGURE 3. Ventral view of the tympanal organs of moths before preparation (con: conjunctivum, ft: fornix tympany, prs: processus spiniforme, rgo: rugae odontinae, spn: spinula, tym: tympanum, tymc.: tympanalcilia, zgt: zona glabra tympani) a. Pyralis farinalis b. Hypsopygia glaucinalis c. Endotricha flammealis d. Dioryctria pineae e. Dioryctria mendacella f. Oncocera semirubella g. Etiella zinckenella h. Acrobasis obliqua i. Myelois circumvoluta j. Ematheudes punctellus.

FIGURE 4. Tympanal organs ultrastrukture of the moths after preparation (Blue circle: Intersegmental thoraco abdominal membrane; black circle: pons tympani; black triangle: processus spiniforme; red line: fornix tympani width) a. Pyralis farinalis b. Hypsopygia glaucinalis c. Endotricha flammealis d. Dioryctria pineae e. Dioryctria mendacella f. Oncocera semirubella g. Etiella zinckenella h. Acrobasis obliqua i. Myelois circumvoluta j. Ematheudes punctellus.