Chinochya unifasciata (Takizawa, 1978) comb. nov. Figures 15D-F, 17

Atrachya unifasciata Takizawa, 1978: 132.

Monolepta sublata: Kimoto, 1976: 6 (Taiwan). non Monolepta sublata Gressitt & Kimoto, 1963

Types.

Holotype ♂ (SEHU) (Fig. 15D-F): "Chitou (溪頭) Chu- / shan Taiwan / 6-7.VII.1975 / H. Takizawa [p, w] // Holo [h] -type [p] / Atrachya / unifasciata / Takizawa [h, r] // HOLOTYPE / Appended label by ÔHARA, IMRAI, KANBE / SUZUKI and HIRONAGA / 2007 [p, w, with red band along right margin] // 0000003055 / Sys. Ent / Hokkaido Univ. / Japan [SEHU] [p, w]".

Other material.

Taiwan. Hsinchu: 1♂ (TARI), Talu trail (大鹿林道), 24.VI.2009, leg. Y.-F. Hsu; Maioli: 2♂♂ (TARI), Hsuehchien (雪見), 7.VI.2013, leg. W.-B. Yeh; Kaohsiung: 2♂♂ (TARI), Chungchihkuan (中之觀), 3.VII.2009, leg. S.-F. Yu & M.-H. Tsou; Taitung: 1♀ (TARI), Liyuan (栗園), 19.VI.2013, leg. B.-X. Guo.

Description.

Length 4.9-5.8 mm, width 2.6-3.0 mm. Head, prothorax, and abdomen yellowish brown; antennae black except two basal antennomeres yellowish brown; meso- and metathoracic ventrites black; front legs yellowish brown, but tibiae and tarsi darker; middle and hind legs black; elytra black with one transverse, broad, white band at middle (Fig. 15D, E). Antennae (Fig. 16A) filiform in males, ratio of length of antennomeres I to XI 1.0: 0.4: 0.4: 0.9: 0.9: 0.9: 0.9: 0.8: 0.8: 0.7: 0.9; ratio of length to width from antennomere I to XI 3.8: 1.8: 2.0: 3.9: 3.4: 3.5: 3.6: 3.4: 3.6: 3.3: 3.5; similar in females, ratio of length of antennomeres I to XI (Fig. 17B) 1.0: 0.4: 0.5: 1.0: 1.0: 0.9: 0.9: 0.9: 0.8: 0.8: 0.9; ratio of length to width from antennomere I to XI 3.8: 1.8: 2.1: 4.2: 3.6: 3.3: 3.6: 3.4: 3.3: 3.4: 4.2. Pronotum 1.62-1.67 times wider than long; lateral margins rounded and apically narrowed, basal margin slightly rounded but slightly depressed at middle, apical margin truncate; disc with dense fine punctures, without lateral depressions. Elytra 1.51-1.61 times longer than wide; parallel-sided; disc moderately convex, with dense, fine punctures; apex truncate. Tarsomeres I of front legs swollen in males (Fig. 17J), but not modified in females (Fig. 17K). Penis (Fig. 17C-E) wide, ca. 4.0 times longer than wide; lateral margins parallel from base to apical 2/5, then basally narrowed, apex broadly rounded; with transverse and longitudinal, strongly sclerotized area near apex, intersecting at middle; tectum weakly sclerotized, elongate from apical 1/8 to basal 1/3, apex rounded; basally broadened in lateral view; ventral surface with broad groove from apex to middle. Endophallic spiculae complex: median endophallic spiculae composed with two pairs of different shapes, one pair elongate and with acute apices near middle, outer pair hook-like; lateral endophallic spiculae composed of longitudinal row of hook-like, larger setae ventrally located, small setae dorsally located. Gonocoxae (Fig. 17G) slender, tightly conjunct from apex to apical 2/5; each gonocoxa with nine setae from apical 1/5 to apex, some setae smaller, subapically widened, apex obliquely truncate. Ventrite VIII (Fig. 17F) strongly sclerotized except apex, with a number of long setae at sides, short setae along apical margin, spiculum elongate. S permathecal receptaculum (Fig. 17L) strongly swollen, with one transverse, erect sclerite; pump slender and curved; sclerotized spermathecal duct short (broken), but base extremely wide. Bursal sclerites well developed, dorsal bursal sclerites larger (Fig. 17H), with one longitudinal row of seven stout setae; the ventral bursal sclerites smaller (Fig. 17I), with one longitudinal row of 13 or 14 small denticles.

Diagnosis.

Chinochya unifasciata is similar to C. sublata . They cannot be separated based on their external morphology, however, C. unifasciata (Fig. 17C-E) differs from C. sublata (Fig. 16C-E) based on genitalic characters as follow: median endophallic spiculae composed of two pairs of sclerites (three different pairs of sclerites in C. sublata); lateral endophallic spiculae longitudinally arranged (transversely arranged in C. sublata); ventral bursa sclerite with 13 or 14 small denticles (seven or eight small denticles in C. sublata).

Distribution.

Widespread but scattered in Taiwan.