Ammatucha Turner, 1922

Ren, Yingdang & Li, Houhun, 2006, Review of Ammatucha Turner with descriptions of three new species (Lepidoptera: Pyralidae: Phycitinae), Zootaxa 1131, pp. 59-68 : 60-62

Ammatucha Turner, 1922

Ammatucha Turner, 1922: 43 ; Roesler, 1983: 44.

Type species: Ammatucha semiirrorella ( Hampson, 1896) (= Ammatucha lathria Turner, 1922 ). Sumatraphycis Roesler & Küppers, 1979: 85.

Type species: Nephopteryx semiirrorella Hampson, 1896

Diagnosis: Ammatucha is superficially similar to Ceroprepes Zeller , sharing an antemedian ridge of raised scales on the forewing and similar venation. Structurally it also is similar to Ceroprepes ; the female genitalia of both genera have a stout ductus bursae and a more­or­less similar signum. Ammatucha can be distinguished from Ceroprepes by the following characters: the male antenna has a deep sinus at the base of the shaft, and the shaft is strongly ciliated; in the hindwing M2 and M3 are stalked about 1/3 the length of M2; the uncus has a pair of sclerotized plates basally, arising from the lateral sides; the transtilla is absent or with a pair of slender disconnected arched bars; and the ductus seminalis originates from the anterior end of the corpus bursae. In comparison, in Ceroprepes the male antenna lacks the sinus or has only a very shallow one, and is typically unipectinate; the hindwing has M2 and M3 free; the uncus lacks the sclerotized plate at the base; the transtilla is broader and completely connected forming a rounded or saddlelike area; and the ductus seminalis originates from the posterior end of the corpus bursae.

Adults ( Figs. 1–3 ). Frons rounded. Ocellus present. Chaetosema well developed, near margin of eye behind antenna. Antenna in male with a deep sinus and rough scale tuft at base of shaft; shaft strongly ciliated, usually strongly curved at end of sinus; antenna in female simple with short pubescence. Proboscis well developed. Labial palpus upturned; second segment long and thick; third segment shorter and more slender than second, acuminate. Maxillary palpus short, scaled. Forewing elongate­narrow, with 11 veins: R1 from 2/3 of upper edge; R2 from before angle of cell; R3 and R4 stalked at base for about 1/ 3 length of R4; M1 from upper angle of cell; M2 and M3 connate or very short­stalked, separated from Cu1 at base; Cu1 from the lower angle; Cu2 from before angle; 1A well developed; cell about 3/5 length of forewing. Hindwing semitransparent, with 10 veins: Sc and Rs stalked for about 1/2 length of Sc; M1 from upper angle of cell; M2 and M3 stalked for about 1/3 length of M2; Cu1 and Cu2 free; Cu1 from lower angle of cell and approximated to M2+3 for a short distance beyond cell; Cu2 from before angle; cell about 1/ 3 length of hindwing.

Male genitalia. Uncus more­or­less tongue­shaped, wide basally, with a pair of long, strongly sclerotized plates arising from lateral sides at base; in Ammatucha piti uncus bifurcate terminally. Gnathos usually long­clavate, but extremely short in A. porisada , thickened and tonguelike in A. piti . Transtilla usually sclerotized, as a pair of arched bars separated mesally. Valva sclerotized, irregularly parallelogram­shaped, with clasper; costa and sacculus heavily sclerotized. Juxta roughly V­shaped. Vinculum short, V­ or U­shaped. Aedeagus cylindrical, without cornuti; culcita present.

Female genitalia. 8th sternite with anterior margin convex. Apophyses anteriores and apophyses posteriores short, equal or nearly equal in length. Ductus bursae membranous or partly sclerotized, wide and short. Corpus bursae membranous, long, sac­shaped. Signum heavily sclerotized, situated at posterior end of corpus bursae. Ductus seminalis from anterior end of corpus bursae.

Distribution ( Fig. 4 ). China (Fujian, Guangdong, Guangxi), Bhutan, India (Assam), Sri Lanka, Indonesia (Sumatra), and Australia.

Figures

FIGURE 4. Distribution of Ammatucha spp. triangle: A. brevilepigera sp. nov.; heart: A. flavipalpa sp. nov.; clover: A. longilepigera sp. nov.; circle: A. semiirrorella; diamond: A. porisada; square: A. piti.

FIGURES 1 – 3. Ammatucha spp., adults. 1, A. longilepigera sp. nov.; 2, A. brevilepigera sp. nov.; 3, A. flavipalpa sp. nov.