Hexatoma (Eriocera) cleopatroides Men

Men, Qiu-Lei & Yu, Dao-Ping, 2015, One new species of the subgenus Hexatoma (Eriocera) Macquart (Diptera, Limoniidae) from China with a key to Chinese species, ZooKeys 477, pp. 157-171 : 165-168

Taxon classification Animalia Diptera Limoniidae

Hexatoma (Eriocera) cleopatroides Men sp. n. Figs 1-3, 4-6

Diagnosis.

Antennal flagellum yellow. Head and thorax black, prescutum with two ill-defined grayish stripes. Wings tinged with light brown, cells c and sc more yellowish brown than ground color, wing-apex blackish, the basal half except extreme base also blackish. Abdominal segments two to four orange.

Description.

Body length: male 15.5-16.5 mm (n=2), female 18.3 mm (n=1). Wing: male 15.5-17.5 mm (n=2), female 15.2 mm (n=1). Antenna: male 4.5 mm, female 4.2 mm.

Head. Rostrum dark brown with dark brown nasus. Vertex and occiput blackish. Setae on head black. Antenna 7-segmented in both sexes, relatively short, if bent backward not extending to the root of halteres (Fig. 1); scape black, elongated; pedicel black, very short; flagellum yellow, the first flagellomere longest, the remainder progressively shortened (Fig. 1). Verticils black, shorter than flagellomeres. Palpi black, the setae on palpi black. Tubercle enlarged (Fig. 1).

Thorax. Pronotum black. Prescutum black with two ill-defined grayish stripes. Scutum and scutellum black. Pleura deep brown. Setae on thorax mainly distributed on the lateral side of the prescutum. Coxae black; trochanters black; fore and middle femora brown in basal half, black in apical half (Fig. 1); hind femora brown in basal one-fourth, the remainder black (Fig. 1); tibiae dark brown, black at apex; tarsi black. Tibia spurs black with 2-2-2 in number. Setae on coxae and trochanters long, black, the remainder relatively short. Wings with ground color light brown, more yellowish brown in cells c and sc; stigma inconspicuous; wing with apex blackish, the basal half of wing except the extreme base also blackish (Fig. 1). Sc ending beyond the fork of R2+3+4; R2+3 distinctly shorter than R3; cell m1 present, asymmetrical, slightly longer than its petiole (Fig. 1). Halteres entirely black.

Abdomen. The first tergite black, narrowly ringed with orange at the caudal margin, the first sternite black also with orange stripe apically; tergites two to four orange, narrowly ringed with black apically, sternites uniformly orange; the remainder including hypopygium black in male (Fig. 1); the eighth to tenth tergites orange in female, ovipositor with cercus long and straight, basally brown and gradually passing into orange apically, hypovalva relatively long, orange (Figs 3, 4). Hypopygium with outer gonostylus slender, dark brown, the terminal spine decurved (Fig. 2); inner gonostylus dark brown, thick, fluted (Fig. 2); paramere bifid, curved inwardly, forming two triangular lobes, the ventral one larger than the dorsal one (Figs 2, 5, 6); aedeagus tubular, S-shaped in lateral view (Fig. 6).

Type material.

Holotype male. Pinned specimen. China: Anhui Province, Yuexi County, Yaoluoping National Nature Reserve, 31°2.123'N, 116°6.290'E, 1000m, 16 Aug. 2013, Z. K. Liu. Paratype. Pinned specimen. China: 1 male 1 female, Anhui Province, Yuexi County, Yaoluoping National Nature Reserve, 31°2.122'N, 116°6.209'E, 1000m, 17 Aug. 2013, Q. L. Men.

Distribution.

China (Anhui).

Remarks.

This new species is similar to another Chinese species Hexatoma (Eriocera) cleopatra from Sichuan by the color pattern of abdomen and wings. It can be easily distinguished from the latter by the prescutum entirely black with two ill-defined gray stripes (prescutum not entirely black, the extreme cephalic portion of prescutum variegated by reddish, with only one black median vitta in Hexatoma (Eriocera) cleopatra as described in Alexander 1933a); legs with fore and middle femora brown in basal half, black in apical half, with hind femora brown in basal one-fourth, the remainder black as shown in Fig. 1 (entirely dark brown in Hexatoma (Eriocera) cleopatra as described in Alexander 1933a); wings with cells c and sc more yellowish brown than the ground color as illustrated in Fig. 1 (cells c and sc not darker than the ground color in Hexatoma (Eriocera) cleopatra as described in Alexander 1933a).

Etymology.

The specific epithet is an adjective based on a name of a morphologically similar species, Hexatoma (Eriocera) cleopatra .