Sparedrus subserratus ( Gressitt, 1939 ) Švihla & Dejean, 2007

Švihla, Vladimír & Dejean, in, 2007, Preliminary revision of the genus Sparedrus (Coleoptera: Oedemeridae) from eastern and southeastern Asia, Acta Entomologica Musei Nationalis Pragae 47, pp. 153-168 : 164-165

Sparedrus subserratus ( Gressitt, 1939) comb. nov.

( Figs. 9 , 20 )

Sparedropsis subserratus Gressitt, 1939: 218 .

Type locality. China, Hainan Island, Yacheng district, Sama.

Type material examined. PARATYPE: ♀, ‘ Hainan Is., China, Sam-ah-kong [= Sama], Yai-hsien [= Yacheng] (District), May 22-25, 1932, W. E. Hoffmann & K. Lau [lgt.] [printed] // 4 [typed] // ALLOTYPE, J. L. Gressitt [printed], SPAREDROPSIS SUBSERRATUS [handwritten] [red label] // L. Gressitt collection [printed] // Collection of the CALIFORNIA ACADEMY OF SCIENCES, San Francisco, California [printed]’ ( CASC) .

Redescription. Coloration. Entirely rusty, knees and bases of middle and posterior tibiae chestnut brown ( Fig. 9 ).

Male (not examined). Original description ( GRESSITT 1939), with my emphasis of probably more important distinguishing characters: ‘Head slightly broader than prothorax, closely and distinctly punctured; frons concave, transversely oblong, twice as wide as interocular portion of occiput; eyes large and deeply emarginated. Antennae nearly three-fourth as long as body, moderately slender; scape slightly swollen apically, shorter than third segment and about as long as fourth; fifth to tenth segments briefly produced at ectoapical angles. Prothorax barely broader than long, subparallel, slightly broader at middle, depressed above; surface closely punctured, slightly irregular, compressed near elytral bases. Elytra broad and depressed, closely punctured; disc of each with vestiges of four costae. Ventral surfaces finely punctured, a little more sparsely and deeply so on first two abdominal segments; last abdominal sternite evenly rounded, not quite as long as preceding segment. Length 12 mm; breadth 3.35 mm.’

Female. Eyes large, moderately protruding, head across eyes ca. as wide as pronotum, straight behind eyes, moderately narrowing posteriorly. Frons between eyes slightly more than three times as wide as length of antennomere 2. Last maxillary palpomere narrowly securiform. Antenna reaching almost two thirds of elytral length, antennomeres 3-10 more or less serrate with arcuate inner margin and with protruding inner lateroapical corner, antennomeres 6-11 more or less flattened dorsoventrally, more or less curved. Surface of head rugulose-lacunose, matt, with sparse, long, semierect yellow pubescence. Pronotum ca. as long as wide, very slightly cordiform, its anterior margin slightly sinuate, anterior corners rounded, lateral mar- gins slightly and sinuately narrowing posteriorly, posterior corners obtuse, posterior margin rounded. Surface of pronotum sculptured and pubescent like that of head, matt except for a pair of small, oblique, longitudinal impunctate and glabrous areas, situated ca. in middle of posterior half. Elytra parallel-sided, surface finely punctate, semilustrous, with fine, semierect yellowish-white pubescence, elytral nervation slightly indicated. Last tergite slightly exceeding last sternite, apically truncate, apex of last sternite shallowly emarginate ( Fig. 20 ).

Length (♀). 19.0 mm.

Comments. Because the male is unknown, the species cannot be included in any species group. Owing to its large body and habitus, it is probably related to S. atricolor ( Pic, 1935) and S. latipennis ( Pic, 1923) .

Distribution. China: Hainan Island.

Figures

Figs. 7-11. Habitus. 7 – Sparedrus davidis Fairmaire, 1888. 8 – S. atricolor (Pic, 1935), syntype. 9 – S. subserratus (Gressitt, 1939), paratype. 10 – S. latipennis (Pic, 1923), syntype. 11 – S. angustatus (Pic, 1923), syntype. 12-13. Head. 12 – Sparedrus atricolor (Pic, 1935); 13 – S. latipennis (Pic, 1923). (Photo J. Macek).

Figs. 14-22. 14-15. Last maxillary palpomere of male. 14 – Sparedrus karenorum sp. nov.; 15 – S. rufus (Pic, 1922). 16-18. Antennomeres 2-3. 16 – S. karenorum sp. nov.,J; 17 – ditto,♀; 18 – S. atricolor (Pic, 1935),♀. 19-20.Apex of pygidium of female. 19 – S. atricolor; 20 – S. subserratus (Gressitt, 1939). 21-22. Antennomeres 9-10 of female. 21 – S. latipennis (Pic, 1923); 22 – S. angustatus (Pic, 1923). 23-24. Structure of elytra. 23 – S. chiangmaiensis sp. nov. 24 – S. malickyi sp. nov. Scale a – Figs. 16-22; b – Figs. 14-15.