Hesperopenna helferi, Bezděk, 2013

Bezděk, Jan, 2013, Revision of the genus Hesperopenna (Coleoptera: Chrysomelidae: Galerucinae). I. Generic redescription, definition of species groups and taxonomy of H. medvedevi species group, Acta Entomologica Musei Nationalis Pragae 53 (2), pp. 715-746 : 734-738

Hesperopenna helferi sp. nov.

( Figs 16 , 24 , 31 , 38 , 45 , 53 )

Type locality. Myanmar, Tenasserim [= Tanintharyi Region].

Type material examined. HOLOTYPE: ♂, ‘MUS. PRAGENSE / TENASSERIM / COLL. HELFER [w, p]’ ( NMPC) . PARATYPES: 2 ♂♂ 1 ♀ and 1 spec. unsexed (abdomen missing), same data as in holotype ( NMPC, 1 ♂ in JBCB).

Description. Body length: ♂♂ 7.9–8.5 mm (holotype 8.5 mm), ♀ 8.6 mm.

Male (paratype, Fig. 53 ). Body completely brown, apical half of elytra somewhat paler, apices of mandibles black, antennae gradually darkened from antennomere III.

Interocular space twice as wide as transverse diameter of eye. Antennae 0.75 times as long as body, length ratio of antennomeres I to XI equals 16-5-7-15-15-15-16-15-16-14-17. Pronotum 1.55 times as broad as long. Elytra glabrous, 1.65 times as long as wide (measured at humeral calli), 0.72 times as long as body. Length ratio of metatarsomeres 1–4 equals 12- 7-5-11. Last ventrite posteriorly without two small incisions ( Fig. 24 ).

Aedeagus: dorsal side with long thin incision; apex ventrally with high thin keel in the middle and deep U-shaped incision on right side ( Fig. 16 ).

Female. Apex of last ventrite with three very small protrusions (median and two lateral) ( Fig. 31 ), pygidium with small U-shaped incision at apex ( Fig. 38 ). Spermatheca: nodulus relatively narrow, subtubular, slightly extended apically, cornu regularly rounded, slightly wider than nodulus, apical appendage quadrangular ( Fig. 45 ).

Differential diagnosis. Hesperopenna helferi sp. nov. is similar to H. bonifaci sp. nov. Both species share glabrous elytra and uniformly brown legs and can be distinguished by the structure of aedeagus which in H. bonifaci sp. nov. forms two thin touching processes dorsally and is deeply incised on the left side ventrally, while in H. helferi sp. nov. forms two wider processes dorsally and is deeply incised on the right side ventrally, moreover with high median keel ( Figs 15, 16 ).

Etymology. Dedicated to a Czech physician and explorer Jan Vilém Helfer (1810 – 1840) who collected the type series and whose collection is now deposited in NMPC.

Distribution. Myanmar (Tanintharyi Region).

Figures

Figs 15–18. Aedeagus (a – dorsal view; b – lateral view; c – ventral view). 15 – H. bonifaci sp. nov.; 16 – H. helferi sp. nov.; 17 – H. sipekorum sp. nov.; 18 – H. zofka sp. nov. Scale bar 1 mm.

Figs 19–26. Last abdominal ventrite of males.19 – Hesperopenna medvedevi nom. nov.; 20 – H. persimilis (Kimoto, 1989); 21 – H. tibialis (Kimoto, 1989); 22 – H. arnoldi sp. nov.; 23 – H. bonifaci sp. nov.; 24 – H. helferi sp. nov.; 25 – H. sipekorum sp. nov.; 26 – H. zofka sp. nov. Scale bar 1 mm.

Figs 27–33.Last abdominal ventrite of females. 27 – Hesperopenna medvedevi nom.nov.; 28 – H.persimilis (Kimoto, 1989); 29 – H. tibialis (Kimoto, 1989); 30 – H. arnoldi sp. nov.; 31 – H. helferi sp. nov.; 32 – H. sipekorum sp. nov.; 33 – H. zofka sp. nov. Scale bar 1 mm.

Figs 34–40. Female pygidium. 34 – Hesperopenna medvedevi nom. nov.; 35 – H. persimilis (Kimoto, 1989); 36 – H. tibialis (Kimoto, 1989); 37 – H. arnoldi sp. nov.; 38 – H. helferi sp. nov.; 39 – H. sipekorum sp. nov.; 40 – H. zofka sp. nov. Scale bar 1 mm.

Figs 41–47. Spermatheca. 41 – Hesperopenna medvedevi nom. nov.; 42 – H. persimilis (Kimoto, 1989); 43 – H. tibialis (Kimoto, 1989); 44 – H. arnoldi sp. nov.; 45 – H. helferi sp. nov.; 46 – H. sipekorum sp. nov.; 47 – H. zofka sp. nov. Scale bar 0.25 mm.

Figs 52–55. Habitus. 52 – Hesperopenna bonifaci sp. nov. (male, holotype, 9.5 mm); 53 – H. helferi sp. nov. (male, paratype, 8.5 mm); 54 – H. sipekorum sp. nov. (male, holotype, 8.6 mm); 55 – H. zofka sp. nov. (male, holotype, 6.9 mm).