Antigius jinpingi Hsu

Hsu, Yu-Feng, 2009, A new species of Antigius (Lepidoptera: Lycaenidae: Theclini) from Taiwan, Zootaxa 1983, pp. 45-53 : 46-48

Antigius jinpingi Hsu , new species

(Figs. 1 – 4, 9 – 13)

Type material. HOLOTYPE ɗ(genitalia preparation YFH 1421): “ TAIWAN: PINGDONG Co., Wutai, Wutoushan, 1200 m, N22° 43.855’ E120°46.604’, 8. v. 2005, J. P. Su” [white label, printed], " Holotype Antigius jinpingi Hsu " [red label, printed]. The specimen is mounted on a regular pin and is in good condition.

PARATYPES (2ɗ, with same data as holotype); 1ɗ (with same locality as holotype, 16. v. 2005, genitalia preparation YFH 1415).

Description. – Male (Figs. 1 – 2). Head: Frons hairy, brown, edged with white laterally and ventrally. Prominent hair tuft present on vertex. Chaetosemata forming a pair of transverse patches behind antennae, with both bristles and small acles. Eye semioval, sparsely hairy. Labial palpus porrect, white with distal tip brown. Length of antenna 6.6 – 7.1 mm (6.8 ± 0.2 mm, n = 4). Thorax: Brown dorsally, white ventrally. Legs white, banded by brown on tarsi; foretarsus with all tarsomeres completely fused, tubular, posttarsus vestigial (Fig. 3), mesotarsus and metatarsus with 5 tarsomeres, with posttarsus bearing a pair of claws (Fig. 4). Length of forewing 13.5 – 15.5 mm (14.6 ± 0.9 mm, n = 4). Forewing. Ground colour of upperside brown, with markings of underside barely visible. Fringe white mixed with brown. Ground color of underside white. Central symmetry system with distal band forming a brown band, displaced proximally in cell Cu1; proximal band represented by a small, dark brown dot. Element “g” barely visible, represented by an indistinct line from costa to M3. Marginal ocelli prominent, consisted of a series of dark brown spots parallel to termen, larger posteriad. Parafocal elements forming a pale brown line. Discoidal spot present in the form of a brown bar. Hindwing ground colour of upperside brown, with markings of underside barely visible. Narrow white lines along termen. Fringe white but with outer cilia dark brown near tornus. “Taillike” projection of Cu2 slender, dark brown with white distal tip. Ground colour of underside white. Central symmetry system with distal band forming a brown band, broken at cell M2, displaced at Cu2, bent inwards in cell Cu2, proximal band forming three dark brown spots at proximal end of Sc + R1 cell, discoidal cell, and Cu1 cell. Discal spot present, forming a brown bar. Element “g” represented by an obscure brown line parallel to termen. Marginal ocelli represented by a series of faint, brown dots, but forming a prominent dark brown spot encircled with orange in cell Cu1, and a dark brown spot crowned with orange at tornus. Parafocal elements forming a pale brown line. Abdomen: Brown dorsally, white ventrally. Genitalia ( Figs. 9 – 13 ) with sclerites of 9th and 10th segments fused, forming a complete ring, width approximately 0.64 x height. Tegumen somewhat asymmetrical, with right side longer than left side ( Fig. 9 ); 9th +10th sclerites truncated posteriorly, bearing a paired, tapering, pointed uncus pointing ventrad; a pair of blunt protrusions present in front of brachia; brachium slender, hooklike, slightly swollen at base; saccus forming a semi-circular disc, 0.3 x tegumen height. Phallus elongate, 1.68 x tegumen height, with opening of aedeagus dorsad, positioned at right side. Cornuti present in the form of a sclerotized band bearing minute teeth. Valva simple, flaplike, curved upwards, with caudal margin rounded, slightly attenuated posteriorly. Juxta V-shaped.

Female: Unknown.

Distribution. This species is known only from Taiwan.

Hostplant. Unknown (but see discussion).

Voltinism. Evidently univoltine; adult occurs in May.

FIGURES 1–4. Antigius jinpingi . 1, holotype ɗ, uppersides; 2, holotype ɗ, underside; 3, foretarsus; 4, metatarsus. Scale bar of adult = 1 cm.

FIGURES 5–8. Antigius butleri . 5, ɗ(Hokkaido, Japan), uppersides; 6, ɗ (Hokkaido, Japan), undersides; 7, ɗ (Guangdong, China), uppersides; 8, ɗ (Guangdong, China), undersides. Scale bar of adult = 1 cm.

Etymology. The species is named after its discoverer, Mr. Jin-Ping Su, a prominent local beetle investigator.

Diagnosis: The wing pattern of A. jinpingi most closely resembles that of A. butleri and A. shizuyai ; they share a reduction of the distal band of the central symmetry system in the M-cells of the hindwing underside. This reduction is found in neither A. attilia nor A. cheni ( Koiwaya 2007) , thus representing a possible synapomorphy for these three taxa. Patterns on the forewing undersides of A. butleri , A. shizuyai and A. jinpingi are similar, but the distal band of the central symmetry system is broken into a series of spots and displaced at M 3 in A. shizuyai ( Koiwaya 2002, 2007). By contrast, this band forms a continuous straight line in A. butleri (Figs. 6, 8) and A. jinpingi (Fig. 2). Marginal ocelli and element “g” are prominent in A. butleri (Figs. 6, 8), but both are reduced in A. jinpingi (Fig. 2). Prominent white markings are present on the hindwing upperside in both A. butleri (Figs. 5, 7) and A. shizuyai , but lacking in A. jinpingi (Fig. 1). The male genitalia of A. jinpingi ( Fig. 9 – 13 ) is closest to that of A. butleri ( Fig. 14 – 18 ); the valva in both species are rounded distally ( Shirôzu and Yamamoto, 1956: pl. 52, fig. 15; p. 89, Kawazoé and Makibayashi 1976), but the valva of A. jinpingi is broad and relatively short, with the width of broadest part 0.39x its length ( Fig. 11 ). The valva of A. butleri is narrowed distally, relatively slender, with the width of broadest part 0.34 x its length ( Fig. 16 ; Kawazoé and Makibayashi 1976: p. 89). Socii are represented as a pair of prominent, setaceous protrusions near the base of the brachia in A. jinpingi ( Fig. 9 ) but barely visible in A. butleri ( Fig. 14 ; Shirôzu and Yamamoto, 1956: pl. 52, fig. 15; Kawazoé and Makibayashi 1976: p. 89). A. cheni possesses the most distinct male genitalia of known Antigius species, having a very short uncus, swollen brachia, and strongly asymmetrical valvae, with the right valva noticeably longer than the left ( Koiwaya 2002). A. attilia and A. shizuyai both possess a slender, digitate uncus and valva, in contrast to a tapering uncus and broad valva found in A. jinpingi and A. butleri .

Figures

FIGURES 9 – 13. Male genitalia of Antigius jinpingi. 9, dorsal view of tegumen; 10, juxta; 11, lateral view of 9 th + 10 th sclerites, with right valva removed; 12, lateral view of phallus; 13, dorsal view of phallus. Scale bar = 1 mm.

FIGURES 14 – 18. Male genitalia of Antigius butleri. 14, dorsal view of tegumen; 15, juxta; 16, lateral view of 9 th + 10 th sclerites, with right valva removed; 17, lateral view of phallus; 18, dorsal view of phallus. Scale bar = 1 mm.