Stenothemus orbiculatus, Švihla, 2005

Švihla, Vladimír, 2005, New taxa of the subfamily Cantharinae (Coleoptera: Cantharidae) from south-eastern Asia with notes on other species II, Acta Entomologica Musei Nationalis Pragae 45, pp. 71-110 : 99-100

Stenothemus orbiculatus sp. nov.

( Figs. 58 , 62 , 65 )

Type locality. India, Manipur, Kayam Bung, ca 2440 m a.s.l.

Type material. HOLOTYPE: J, ‘ Assam [sic!], Manipur, Hkayam Boum // 8000´, 23.vi.1960, F. Schmid’ ( NHMB) . PARATYPES: same data, 9 JJ 1 ♀ ; ‘ Assam [sic!], Manipur, Siroki Kashong // 7000´, 11.vii.1960, F. Schmid’ ( NHMB, NMPC) .

Description. Coloration. Head sienna, antennae sienna, antennomeres 2-11 more or less pal- er annulated. Prothorax honey yellow, disc of pronotum sienna. Meso- and metasternum and ventral part of abdomen honey yellow to sienna, legs honey yellow, bases and apices of femora and bases of tibiae slightly paler. Elytra honey yellow and mottled with sienna. The only female specimen is darker with chestnut brown basic coloration and paler parts sienna-coloured.

Male. Eyes large and protruding, head across eyes slightly narrower than pronotum, temples straight and convergent posteriorly. Antennae reaching almost two thirds of elytral length. Surface of head very finely imbricate-punctate, finely yellow pubescent, matt. Pronotum moderately wider than long ( Fig. 58 ), its anterior margin widely rounded, anterior corners rounded, lateral margins arcuately narrowing posteriorly, posterior corners obtuse, moderately rounded, posterior margin widely rounded. Surface of pronotum very finely imbricatepunctate, finely yellow pubescent, matt, disc semilustrous. Elytra nearly parallel-sided, elytral nervation slightly indicated, surface of elytra finely and shallowly rugulose-lacunose, with fine, yellow, semi-recumbent pubescence and intermixed sparser, brown, erect setae. Aedeagus as in Figs. 62 and 65 .

Female. Coloration remarkably darker than in male (?always) as mentioned above. Eyes slightly smaller, head across eyes distinctly narrower than pronotum.Antennae shorter, slightly exceeding elytral midlength. Pronotum almost 1.25 times as wide as long.

Length J ♀: 7.8-10.5 mm.

Differential diagnosis. Stenothemus orbiculatus sp. nov. differs from other species of the S. harmandi species group in rounded posterior corners of the pronotum.

Etymology. Orbiculatus (Latin) = round, named in reference to the rounded posterior corners of the pronotum.

Distribution. India: Manipur.

Figures

Figs. 53-58. 53-54 – Stenothemus favrei (Pic, 1907). 53 – aedeagus, ventral view; 54 – last abdominal sternite of female. 55 – S. andrewesi (Bourgeois, 1907), last abdominal sternite of female. 56-57 – S. harmandi (Bourgeois, 1902). 56 – paramere, lateral view and its variability; 57 – pronotum. 58 – S. orbiculatus sp. nov., pronotum. Scales a – Figs. 53-55, 57-58; b – Fig. 56.

Figs. 59-63. 59-62 – dorsal part of aedeagus. 59 – Stenothemus harmandi (Bourgeois, 1902); 60 – S. subnitidus sp. nov.; 61 – S. holosericus sp. nov.; 62 – S. orbiculatus sp. nov. 63 – S. subnitidus sp. nov., paramere, lateral view.

Figs. 64-70. 64-66 – paramere, lateral view. 64 – Stenothemus holosericus sp. nov.; 65 – S. orbiculatus sp. nov.; 66 – S. wardi sp. nov. 67-68 – S. wardi sp. nov. 67 – aedeagus, ventral view; 68 – dorsal part of aedeagus. 69-70 – S. sepiaceus sp. nov. 69 – dorsal part of aedeagus; 70 - aedeagus, ventral view. Scales a – Figs. 66-68; b – Figs. 64- 65, 69-70.