Paleosepharia nantouensis (Kimoto) Lee, Chi-Feng, 2018

Lee, Chi-Feng, 2018, The genus Paleosepharia Laboissiere, 1936 in Taiwan: review and nomenclatural changes (Coleoptera, Chrysomelidae, Galerucinae), ZooKeys 744, pp. 19-41 : 31-34

Paleosepharia nantouensis (Kimoto) comb. n. Figs 4 D–F, 6

Monolepta nantouensis Kimoto, 1996: 38; Kimoto and Takizawa 1997: 386 (catalogue); Beenen 2010: 484 (catalogue); Lee and Cheng 2010: 102 (food plant); Yang et al. 2015: 270 (catalogue).

Type material.

Paratype 1♀ (KMNH): "Baibara [h, w] // C. TAIWAN, / End of 1950's [p, w] // Monolepta / nantouensis / Kimoto, n. sp. [h] / Det. S. Kimoto. 19 [p, w] // PHOTO [p, r] // PARATYPE [p, b]".

Other material examined

(n = 22). Hsinchu: 2♀♀ (TARI), Chenhsipao [鎮西堡], 26.VII.2014, leg. Y.-L. Lin; 4♂♂ (TARI), Chienshih [尖石], 12.VII.2009, leg. M.-H. Tsou; 1♀ (TARI), Lupi [魯壁], 20.VII.2008, leg. M.-H. Tsou; 1♀ (TARI), same locality, 26.VII.2008, leg. M.-H. Tsou; Ilan: 1♀ (TARI), Suyuan [思源], 23.VII.2008, leg. H.-Y. Lee; 1♀ (TARI), same locality, 8.VIII.2014, leg. S.-F. Yu; Kaoshiung: 1♂ (TARI), Meilungshan [美瓏山], 15.VI.2016, leg. B.-X. Guo; Taichung: 1♂ (NMNS), Anmashan [鞍馬山], 18.VII.2005, leg. Y.-L. Chen; Taitung: 2♂♂, 3♀♀ (TARI), Liyuan [栗園], 24.VII.2013, leg. C.-F. Lee; Taoyuan: 1♂, 1♀ (TARI), Lalashan [拉拉山], 2.VIII.2008, leg. M.-H. Tsou; 1♂ (TARI), same locality, 7.VIII.2008, leg. H.-J. Chen; 1♀ (TARI), same locality, 30.VIII.2008, leg. M.-H. Tsou; 1♀ (NMNS), Shanpaling [上巴陵], 26.VIII.1987, leg. I. C. Hsu; 1♂ (TARI), Tamanshan [塔曼山], 3.VIII.2008, leg. M.-H. Tsou; 1♀ (TARI), same but with "leg. S.-F. Yu".

Description.

Males. Length 4.7-5.2 mm, width 2.4-2.6 mm. General color yellowish brown (Fig. 4 D–E); antennae, except two basal antennomeres, tibiae, tarsi, and metaventrite blackish brown; scutellum yellowish brown; elytra black, with one pair of broad, curved white stripes from near base to middle, curved inwards at middle. Antenna (Fig. 6A) filiform, ratio of length of antennomeres I to XI 1.0: 0.3: 0.5: 0.9: 0.9: 0.9: 0.9: 0.9: 0.9: 0.8: 0.9; ratio of length to width from antennomere I to XI 3.7: 2.0: 2.9: 5.1: 5.1: 4.9: 5.0: 4.9: 5.2: 4.9: 5.6. Pronotum 1.69-1.81 times wider than long; lateral margins slightly curved, basal margin slightly curved, apical margin slightly concave; disc evenly convex, with reticulate microsculpture and dense, minute punctures and one pair of weak fovea at sides. Elytra parallel-sided; 1.51-1.57 times longer than wide; with one pair of depressions near suture in basal 1/3; disc with dense, minute punctures; apex truncate. First tarsomeres of front legs dorso-ventrally flattened. Penis (Fig. 6 C–E) extremely slender, 6.8 times longer than wide; parallel-sided, posterior widened at middle, apically tapering; tectum elongate from basal 1/5 to apical 1/6, widest at middle and as wide as penis, apically tapering, apex acute; moderately recurved at middle and near apex in lateral view; ventral surface without membranous areas. Endophallic spiculae complex (Fig. 6F) with the longest pair apically curved; also possessing two pairs of long hooked spiculae of equal length, one pair curved inwards, the other curved outwards; a pair of longitudinal rows of hook-like setae distal to bases of longest spiculae; one longitudinal pair of long, apically tapering setae along sides distal to bases of longest spiculae.

Females. Length 5.3-6.3 mm, width 2.6-3.3 mm. Similar to males (Fig. 4F); but elytra lacking oblique depressions; first tarsomeres of front legs normal; ratio of length of antennomeres I to XI (Fig. 6B) 1.0: 0.3: 0.5: 0.9: 0.9: 0.8: 0.9: 0.8: 0.8: 0.7: 0.7; ratio of length to width from antennomere I-XI 4.8: 2.0: 3.7: 5.6: 5.6: 5.9: 6.7: 6.2: 7.2: 6.4: 6.7. Gonocoxae (Fig. 6J) slender, tightly conjunct from apical 1/3 to base; each gonocoxa with eight setae from apical 1/6 to apex, apex truncate. Ventrite VIII (Fig. 6G) weakly sclerotized except apex, with several short setae at apex, and several long setae at sides, spiculum elongate. Spermathecal receptaculum (Fig. 6I) swollen; pump extremely slender and curved; sclerotized spermathecal duct slender. Bursa sclerites (Fig. 6H) elongate and apically tapering, with stout teeth along lateral margin at base; slightly curved in lateral view.

Food plant.

Fagaceae : Castanopsis carlesii (Hemsl.) Hayata ( Lee and Cheng 2010).

Distribution.

Endemic to Taiwan.