Paleosepharia yasumatsui (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 : 34-38

Paleosepharia yasumatsui (Kimoto) comb. n. Figs 7, 8

Monolepta yasumatsui Kimoto, 1969: 51 (Nantou, Ilan); Kimoto 1991: 15 (Kaohsiung); Kimoto and Chu 1996: 83 (catalogue); Kimoto and Takizawa 1997: 387 (catalogue); Beenen 2010: 485 (catalogue); Lee and Cheng 2010: 103 (food plants); Yang et al. 2015: 274 (catalogue).

Type material.

Holotype ♂ (KUEC), labeled: "(Taiwan) / Nanshanchi [南山溪] / Nantou Hsien [p, w] // 30[h].vi.1965 / S. Kimoto [p, w] // Japan-U. S. / Co-op. Sic. / Programme [p, y] // Monolepta / yasumatsui / Kimoto, n. sp. [h, w] // HOLOTYPE [p, r]". Paratypes. 1♂ (KMNH): "(TAIWAN) / Penpuchi [本部溪] / Nontou Hsien / 13. VII. 1966 / H. Kamiya leg. [p, w] // Monolepta / yasumatsui / Kimoto, n. sp. [h, w] // PARATYPE [p, b]"; 1♂ (KMNH): "(Taiwan) [p] / (Taipinshan [太平山]) / Ilan [h] Hsien [p, w] // 5.viii.1967 [h] / B. S. Chang [p, w] // Monolepta / yasumatsui / Kimoto, n. sp. [h, w] // PARATYPE [p, b]".

Other material examined

(n = 68). Hsinchu: 1♂, 1♀ (TARI), Mamei [馬美], 18.V.2008, leg. S.-F. Yu; 1♀ (TARI), Talu trail [大鹿林道], 17.III.2012, leg. Y.-L. Lin; Hualien: 1♂ (TARI), Wanjung [萬榮], 11.VI.2011, leg. M.-H. Tsou; Ilan: 2♀♀ (TARI), Fushan Botanical Park [福山植物園], 1.IV.2008, leg. M.-H. Tsou; 1♀ (TARI), same but with "leg. H.-J. Chen; 1♂ (TARI), same locality, 13.IV.2011, leg. C.-F. Lee; 1♂ (TARI), same locality, 3.VII.2013, leg. Y.-T. Wang; 1♂, 1♀ (NMNS), Mingchi [明池], 18.II.2000, leg. M. L. Chan; 1♂ (TARI), 17.III.2007, leg. M.-H. Tsou; 2♂♂ (TARI), same locality, 16.VIII.2008, leg. M.-H. Tsou; 1♂ (TARI), same locality, 5.IV.2009, leg. M.-H. Tsou; 1♂ (TARI), Shenmihu [神秘湖], 17.IV.2010, leg. M.-H. Tsou; 1♂ (TARI), Taipingshan [太平山], 15.XI.2007, leg. S.-S. Li; 2♀♀ (TARI), Tungshan [銅山], 6.IX.2010, leg. Y.-F. Hsu; Kaoshiung: 1♂ (TARI), Chungchihkuan [中之關], 10-13.X.2012, leg. L.-P. Hsu; 1♂ (TARI), Tengchih [藤枝], 27.IX.2013, leg. W.-C. Liao; 2♀♀ (TARI), same locality, 30.VIII.2014, leg. B.-X. Guo; 1♂, 1♀ (TARI), same locality, 2.IV.2016, leg. W.-C. Liao; 1♀ (TARI), Tianchih [天池], 11.X.2012, leg. L.-P. Hsu; 1♂ (NMNS), Tona trail [多納林道], 30.IV.1998, leg. M. L Chan; 1♀ (TARI), 20.III.2010, leg. U. Ong; Nantou: 1♂ (TARI), Huisunlinchang [惠蓀林場], 26.IV.2014, leg. B.-X. Guo; 1♂ (TARI), same locality, 23.IV.2015, leg. Y.-T. Chung; 2♀♀ (NMNS), Lienhuachih [蓮華池], 21.IV.1998, leg. M. M. Yang & H. T. Chan; 1♂ (TARI), Nanshanchi [南山溪], 25.VII.2008, leg. W.-T. Liu; 1♀ (TARI), same locality, 7.IV.2010, leg. Y.-T. Wang; 1♂ (NMNS), Peitungyenshan [北東眼山], 23-25.IX.1998, leg. W. T. Yang; 1♂ (TARI), Pihu [碧湖], 27.IX.2011, leg. J.-C. Chen; Pingtung: 2♂♂ (TARI), Jinshuiying [浸水營], 19.XI.2009, leg. J.-C. Chen; 1♂ (TARI), same locality, 12.IX.2011, leg. J.-C. Chen; 1♂ (TARI), same locality, 12.IV.2012, leg. C.-F. Lee; 1♀ (TARI), same locality, 27.IV.2014, leg. J.-C. Chen; 1♂ (TARI), Tahanshan [大漢山], 6.VIII.2013, leg. Y.-T. Chung; 1♂ (TARI), Wutai [霧台], 12.IV.2009, leg. U. Ong; 2♀♀ (TARI), same locality, 17.V.2009, leg. U. Ong; Taipei: 1♀ (TARI), Wulai [烏來], 4.III.2007, leg. S.-F. Yu; 1♂ (TARI), same locality, 17.V.2008, leg. M.-H. Tsou; Taichung: 1♂ (TARI), Anmashan [鞍馬山], 22.III.2011, leg. C.-F. Lee; 1♂ (TARI), same locality, 19.X.2011, leg. C.-F. Lee; 1♂ (NMNS), Chiapaotai [佳保台], 6.XII.1991, leg. Y. C. Shiau; 1♀ (TARI), Kukuan [谷關], 19.III.2014, leg. C.-F. Lee; Tainan: 1♀ (TARI), Kantoushan [崁頭山], 20.X.2013, leg. W.-C. Liao; Taitung: 3♀♀ (TARI), Lichia [利嘉], 9.IV.2016, S.-P. Wu; 2♂♂, 1♀ (TARI), Motien [摩天], 5.X.2010, leg. C.-F. Lee; 1♂, 1♀ (TARI), Wulu [霧鹿], 5.X.2010, leg. M.-H. Tsou; Taoyuan: 1♂ (TARI), Fuhsing [復興], 12.IV.2009, leg. M.-H. Tsou; 2♂♂ (TARI), Hsiaowulai [小烏來], 29.IX.2009, leg. M.-H. Tsou; 8♂♂ (TARI), same locality, 10.X.2009, leg. M.-H. Tsou; 1♂ (TARI), Lalashan [拉拉山], 26.X.2008, leg. M.-H. Tsou; 1♂ (TARI), Paling [巴陵], 8.XI.2009, leg. M.-H. Tsou; 1♂ (TARI), Sankuang [三光], 17.X.2009, leg. Y.-L. Lin; 2♂♂ (NMNS), Shanpaling [上巴陵], 26.VIII.1987, leg. I. C. Hsu; 1♀ (TARI), Tungyanshan [東眼山], 20.IX.2007, leg. S.-F. Yu.

Diagnosis.

Adults of P. yasumatsui are similar to those of P. formosana in possessing two broad, distinctly margined transverse black bands on the elytra. However, males of P. yasumatsui are easily separated from those of P. formosana by the absence of an anterior, transverse black band near the suture (present in P. formosana ), and presence of clusters of stout setae behind the scutellum (lacking stout setae in P. formosana ). Females of P. yasumatsui are similar to those of P. formosana but differ in the straight lateral margin of the elytra and continuously arcuate, posterior black stripes (rounded elytra and separated arcuate black stripes in P. formosana ). Males of P. formosana , P. excavata , and P. yasumatsui are similar in possessing a broader penis (less than 6.0 times longer than wide; more than 6.5 times in other species), bifurcate apex of tectum (acute apex in other species), and lacking a pair of elongate, apically curved spiculae (such spiculae present in other species). Males of P. yasumatsui differ in having a deep notch at the apex of the tectum (shallow notch at apex of tectum in other species), curved apex of penis (recurved in other species), short, hooked spiculae 4/5 sizes of long spiculae (1/2 sizes of long spiculae in P. excavata , 1/6 sizes of long spiculae in P. formosana ).

Description.

Males. Length 5.2-6.0 mm, width 2.7-3.3 mm. General color reddish brown (Fig. 7 A–B); antennae and legs black; scutellum reddish brown; elytra yellow, with wide black stripe along lateral margins and suture extending from base to apex; two transverse wide black bands at basal 1/3 and 2/3, anterior band abbreviated near suture. Antenna (Fig. 8A) filiform, ratio of length of antennomeres I to XI 1.0: 0.3: 0.6: 0.8: 0.9: 0.9: 0.9: 0.8: 0.8: 0.7: 0.8; ratio of length to width from antennomere I-XI 4.2: 2.0: 3.2: 4.2: 5.1: 5.1: 5.1: 5.5: 5.4: 5.1: 6.7. Pronotum 1.44-1.51 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 with one pair weak fovea at sides. Elytra subparallel, gradually broadened towards apices; 1.45-1.49 times longer than wide; with one pair of weak depressions near suture at basal 1/3; with paired clusters of long setae behind scutellum; disc with dense, minute punctures; apex truncate. Penis (Fig. 8 C–E) elongate, 5.5 times longer than wide; parallel-sided, strongly widened at apical 1/3, apically curved; tectum elongate from middle to near apex, parallel-sided; apex deeply bifurcate; slightly recurved at basal 1/4 in lateral view; ventral surface with lateral areas membranous. Endophallic spiculae complex (Fig. 8F) with one longest pair directed anteriorly, another shorter pair of hooked spiculae; one pair of elongate rows of hooked setae distal to base of longest spiculae, smaller near base; one paired cluster of short and apically tapering setae near base; one pair of elongate rows of long, apically tapering setae covered by hooked setae.

Females. Length 4.6-5.7 mm, width 2.6-3.1 mm. Similar to male (Fig. 7C); but elytra lacking depressions and clusters of long setae, and anterior black band extending to suture, ratio of length of antennomeres I to XI (Fig. 8B) 1.0: 0.3: 0.5: 0.9: 0.9: 0.8: 0.9: 0.9: 0.8: 0.7: 0.9; ratio of length to width from antennomere I to XI 4.7: 2.1: 3.4: 5.4: 5.3: 5.3: 6.1: 5.6: 6.3: 5.4: 6.0. Gonocoxae (Fig. 8J) slender, tightly conjunct from apical 1/3 to base; each gonocoxa with seven to eight setae from apical 1/6 to apex, apex truncate. Ventrite VIII (Fig. 8G) medially and weakly sclerotized with apical margin curved, with dense, short setae at apex, and several long setae at sides, spiculum extremely elongate. Spermathecal receptaculum (Fig. 8I) swollen; pump extremely slender and curved; sclerotized spermathecal duct slender. Bursa sclerites (Fig. 8H) elongate and apically tapering, two elongate rows of stout setae at sides; slightly curved in lateral view.

Food plants.

Saxifragaceae : Itea parviflora Hemsl.; Betulaceae : Alnus formosana (Burkill ex Forbes & Hemsl.) Makino; Symplocaceae : Symplocos wikstroemiifolia Hayata ( Lee and Cheng 2010).

Distribution.

Endemic to Taiwan.

Key to Taiwanese species of the genus Paleosepharia