Cephalomalthinus formosanus ( Pic, 1910 )

Hsiao, Yun & Tsai, Cheng-Lung, 2019, Cephalomalthinus simplicicornis (Wittmer, 1993) rev. stat. et comb. n.: a resurrected soldier beetle (Coleoptera, Cantharidae) from Taiwan based on morphological and molecular data, Zootaxa 4619 (2), pp. 297-310 : 300-301

Cephalomalthinus formosanus ( Pic, 1910)

( Figs 2–4 , 11–12 , 15–16 , 21–23 , 29–30 )

Rhagonycha formosana Pic, 1910: 271 .

Podabrus curvatipes Pic, 1922: 4 . [Synonymized by Wittmer, 1986: 131.]

Rhagonycha obscurioripes Pic, 1926: 235 . [Synonymized by Wittmer, 1982: 129.]

Micropodabrus formosanus: Wittmer, 1982: 129 .

Fissocantharis formosana: Yang et al. 2012: 47 .

Type material examined. Type ♂ of Rhagonycha formosana Pic, 1910 ( MNHN): [handwritten] Fainan [= Tainan] / Formosa IV // type // [printed] TYPE // [h] Rhagonycha / formosana / Pic // 66 F // Micropodabrus / formosanus / (Pic) / [p] det. W. Wittmer; Type ♂ of Podabrus curvatipes Pic, 1922 ( MNHN): [h] Fainan [= Tainan] / Formosa IV // type // [printed] TYPE // [h] Podabrus / curvatipes / Pic // Micropodabrus / formosanus / (Pic) / [p] det. W. Wittmer; Holotype ♀ of Rhagonycha obscurioripes Pic, 1926 ( MNHN): [p] Formosa // [h] R. obscurioripes / Pic // Rhagonycha / obscurioripes / n. sp. // [p] HOLOTYPUS // [h] Micropodabrus / formosanus / (Pic) / [p] det. W. Wittmer.

Other material examined. TAIWAN: 2 ♂, 3 ♀ ( NMNS), Kukuan , Taichung, 11–12.iv.1986, C.-S. Lin leg. // NMNS ENT 64-246 ; NMNS ENT 64-247 ; NMNS ENT 64-255 ; NMNS ENT 64-256 ; NMNS ENT 64-257 ; 2 ♂, 1 ♀ ( NMNS), Chingshan , Tainan, 18.iv.1992, Sweeping Net, C.-Y. Li leg. // NMNS ENT 1446-3328 ; NMNS ENT 1446-3415 ; NMNS ENT 1446-3456 ; 1 ♂ ( NMNS), Hoawanta, Jenai , Nantou, 30.iv.1992, Sweeping Net, W.-T.Yang leg. // 1448-131 ( NMNS); 1 ♂ ( NMNS), Shihtyutou , Nantou, 2.viii.1994, C.-C. Lo leg. // NMNS ENT 4463-2097 ; 1 ♂ ( NMNS), Tona, Maolin , Kaohsiung, 29–31.iii.2005, UV Light trap, W.-T. Yang leg. // NMNS ENT 4880-175 ; 1 ♂ ( NMNS), Lienhuachih , Nantou, 11.iv.–2.v.2005, Malaise trap ( KCN), C.-S. Lin & W.-T. Yang leg. // NMNS ENT 6817-769 ; 2 ♂ ( NMNS), Panchiu Station, Peinan , Taitung, 4.i.–9.ii.2006, Malaise trap ( KCN), C.-S. Lin & W.-T. Yang leg. // NMNS ENT 5884-486 ; NMNS ENT 5884-487 ; 2 ♂, 2 ♀ ( NMNS), Panchiu Station, Peinan , Taitung, 8.ii.–14.iii.2007, Malaise trap ( KCN), C.-S. Lin & W.-T. Yang leg. // NMNS ENT 7130-459 ; NMNS ENT 7130-460 ; NMNS ENT 7130-461 ; NMNS ENT 7130-462 ; 1 ♂, 1 ♀ ( YHC), Wushe , Nantou, 31.iii.2012, C.-H. Wu leg. ; 2 ♀ ( YHC), Nanshanshi , Nantou, 1.iv.2012, C.-H. Wu leg. ; 1 ♂ ( YHC), Fuli ( Nihoushan ), Hualien, 1.i.2014, W.-C. Huang leg. ; 1 ♀ ( YHC), Jenai , Nantou, 1.iii.2014, C.-H. Wu leg. ; 1 ♂ ( YHC), Majia , Pingtung, 12.iii.2014, Y.-T. Chung leg. ; 4 ♂, 1 ♀ (3 ♂ in NCHU; 1 ♂, 1 ♀ in YHC), Kantoushan , Tainan, 29.iii.2014, W.-C. Liao leg. ; 4 ♂, 6 ♀ (2 ♂, 1 ♀ in NCHU; 2 ♂, 5 ♀ in YHC), Huisun Forest Field, Nantou, 4.iv.2014, Y. Hsiao leg. ; 1 ♂ ( YHC), Chung Cheng Camp Zone , Taichung, 11.iv.2014, W.-R. Liang leg. ; 1 ♂, 2 ♀ ( YHC), Shanping Park , Kaohsiung, 12.iv.2014, W.-C. Liao leg. ; 1 ♂, 2 ♀ ( YHC), Meling, Nanshi , Nantou, 19.iv.2014, W.-C. Liao leg. ; 11 ♂, 16 ♀ (4 ♂, 10 ♀ in NCHU; 7 ♂, 6 ♀ in YHC), Chunyang , Nantou, 4.v.2014, Y. Hsiao leg. ; 1 ♀ ( YHC), Shupishan , Chiayi, 26.iv.2015, collector unknown ; 1 ♂, 3 ♀ ( NCHU), Malunshan , Taichung, 25.iv.2016, Y. Li leg.

Supplementary description. Male genitalia: inner sac enlarged, with basal part as wide as median lobe, slightly shorter than tegmen, elongated ventro-posteriorly, obtuse apically; ventral surface with rounded, swollen process basally and paired clusters of acuminate setae in apical one-third; dorsal surface with rounded, swollen process basally and horn-like process apically, elongated dorso-anteriorly ( Figs 21–23 ).

Diagnosis. This species is closely similar to C. pingtungensis ( Wittmer, 1982) and C. simplicicornis ( Wittmer, 1993) rev. stat. et comb. n. in the color pattern and filiform antennae. It can be distinguished from C. pingtungensis by the simple and unmodified male antennae (antennomeres III–VII with small rounded excavation medially in C. pingtungensis ) and conjoint dorsal plate of aedeagal parameres 0.5 times longer than ventral process of each paramere (conjoint dorsal plate extremely short in C. pingtungensis ). From C. simplicicornis , it differs in the large, prominent eyes ( Figs. 11–12 ; see C. simplicicornis in Figs. 13–14 ), wider conjoint dorsal plate and indistinct, undeveloped dorsal processes of median lobe ( Figs. 15–16 ; see C. simplicicornis in Figs. 17–20 ).

Remarks. In addition to the distinct color variation noted by Yang et al. (2012), the diverticulum of female genitalia varies among different specimens, with relative length ca. 1.7–1.5X longer than spermathecal duct ( Figs. 29–30 ).

Distribution. Taiwan (presumed endemic).

Figures

FIGURES 2–10. Habitus, dorsal view: 2–4. Cephalomalthinus formosanus (Pic); 5–10. C. simplicicornis (Wittmer) rev. stat. et comb. n. Males: 2–3, 5–7, 10; females: 4, 8–9. Non-type specimens: 2–9; holotype: 10. Scale bar: 5.0 mm.

FIGURES 11–14. Head of males, dorsal view: 11–12. Cephalomalthinus formosanus (Pic); 13–14. C. simplicicornis (Wittmer) rev. stat. et comb. n.

FIGURES 15–20. Conjoint dorsal plate of parameres, dorsal view: 15–16. Cephalomalthinus formosanus (Pic); 17–20. C. simplicicornis (Wittmer) rev. stat. et comb. n. Dorsal processes of median lobe indicated by blue arrows. Variation in form of median lobe showed in Fig. 20. Non-type specimens: 15–18; holotype: 19. Scale bar: 1.0 mm.

FIGURES 21–26. Inner sac of aedeagus: 21–23. Cephalomalthinus formosanus (Pic); 24–26. C. simplicicornis (Wittmer) rev. stat. et comb. n. Ventral view: 21, 24; dorsal view: 22, 25; lateral view: 23, 26. Scale bar: 0.5 mm.

FIGURES 27–32. Abdominal ventrite VII of female, ventral view: 27–28. Cephalomalthinus simplicicornis (Wittmer) rev. stat. et comb. n. Female genitalia, lateral view: 29–30. C. formosanus (Pic); 31–32. C. simplicicornis (Wittmer) rev. stat. et comb. Scale bar: 0.5 mm.