Callimerus pectoralis Schenkling, 1899b

Yang, Gan-Yan, Montreuil, Olivier & Yang, Xing-Ke, 2013, Taxonomic revision of the genus Callimerus Gorham s. l. (Coleoptera, Cleridae). Part I. latifrons species-group, ZooKeys 294, pp. 9-35 : 21-24

Callimerus pectoralis Schenkling, 1899b Figs 28-4072

pectoralis Schenkling, 1899b: 335 ( Callimerus ; type locality: "Sumatra (Padang)").

Type material examined.

Lectotype of Callimerus pectoralis Schenkling designated here: "Sumatra / Padang, 1890, E. Modigliani / Teste Schenkling / C. quadripunctatus Schklg, Sumatra, E. Modigliani, 6478 [hw. by Raffaello Gestro]/ Lectotype ♀: Callimerus pectoralis Schenkling, 1899, des. Yang G. Y, 2011" (MCSN, ♀; Figs 28-29).

Note on Type material.

The lectotype is one of the specimens sent to S. Schenkling for study from MCSN, with a label "quadripunctatus Schklg" handwritten by R. Gestro, the former curator of MCSN. The name "quadripunctatus Schklg" has never been published, however, the locality and morphological characters of this specimen perfectly accord with the original publication of Callimerus pectoralis . On the other hand, a specimen found in Coll. M. Pic from MNHN (locality Medan, Sumatra) determined as Callimerus pectoralis by Schenkling himself is conspecific with the specimen labeled "quadripunctatus Schklg" (Figs 30-32). In this case, it is assumed that “quadripunctatus” was the first name that came to Schenkling’s mind and written down in the identification list that sent to MCSN, but later Schenkling changed his mind and published the species with another name “pectoralis”. Regardless of the details, the specimen found in MCSN undoubtedly belongs to the type series and we therefore designated it as the lectotype of Callimerus pectoralis Schenkling here for the taxonomic purpose of fixing the name to a single specimen and preventing further uncertainty regarding the taxon to which the name is applied.

Diagnosis.

This species is most similar to Callimerus rusticus and Callimerus latesignatus . However, it differs from Callimerus rusticus by: (1) mesepisternum yellow (black in Callimerus rusticus ); (2) posterior spot on elytron located vertical-apically, rounded rectangle, length to width ratio about 1.5:1 (Fig. 28)( Callimerus rusticus with posterior spot on elytron located lateral-apically, bar-shaped, length to width ratio about 4:1; Fig. 41); (3) anterior spot on elytron of Callimerus pectoralis larger than that of Callimerus rusticus , in Callimerus pectoralis short diameter of anterior spot on elytron in most cases larger than distance between that spot and elytral suture (Fig. 28, 30) ( Callimerus rusticus short diameter of anterior spot on elytron in most cases not larger than distance between that spot and elytral suture; Fig. 41, 44); (4) outer margin of ventral membranous region of tegmen strongly curved, TML/TMW about 0.9, TMaL/TML about 0.3 (Figs 35, 35a) ( Callimerus rusticus with outer margin of ventral membranous region of tegmen slightly curved, TML/TMW about 1.3, TMaL/TML about 0.2; Figs 48, 48a); (5) tergite VIII with posterior margin rounded, slightly notched in middle (Fig. 38) ( Callimerus rusticus with tergite VIII with posterior margin almost straight; Fig. 51).

The difference between this species and Callimerus latesignatus is provided in the diagnosis section under Callimerus latesignatus .

Description.

Size:length 7.5-8.8 mm, width 2.8-3.3 mm. Color: Head yellow, mandibles black; pronotum yellow. Elytron yellow with two spots, anterior spot at basal one fourth, posterior spot at vertical-apex; anterior spot rounded rectangle, neither reaching outer margin nor suture, short diameter of anterior spot on elytron in most cases greater than distance between that spot and elytral suture (Fig. 28, 30); posterior spot rounded rectangle, length to width ratio about 1.5:1 (Fig. 28, 30). Legs yellow with metacoxae mostly black. Prosternum, mesepisternum, mesepimeron and mesosternum yellow; metepisternum, metasternum and katepisternum black; abdominal ventrites yellow. Head: AL/AD about 1.0; EyD/EyW about 1.0. Prothorax: PL/PW about 0.8. Elytra: EL/EW about 1.7. Male terminalia: apices of parameres convergent (Figs 33-35); TML/TMW about 0.9; TMaL/TML about 0.3, outer margin of ventral membranous region strongly curved (Figs 35, 35a); SApL/SFL about 0.3 (Fig. 37); tergite VIII with posterior margin rounded, slightly notched in middle (Fig. 38); sternite VIII with posterior margin roundly concave (Fig. 39).

Other material examined.

China: Yunnan: Xishuangbanna, Damenglong, 650 m, 1958.IX.17, PU Fuji leg., IOZ (E)1126329 (IZAS, 1♂); Malaysia: Perak, Doherty (MNHN, 1 ex.; NHML, 5 ex.); Malacca, Perak, W. Doherty (MNHN, 1 ex.); Perak, Malacca (Doherty) (MNHN, 1 ex.); "Penang / Bowring 63.47* / Callimerus pectoralis Scklg, S. Schenkling det." (NHML, 2); "Penang / Ex. A. R. Wallace, Private collection, Purchased 1860-70, Ox. Uni. Mus. of Nat. Hist. (OUMNH)" (OUM, 4 ex.); Kuching, Sarawak, G.E. Bryant, 28.XI.13 (NHML, 1 ex.); Indonesia: J.B. Corporaal; Sumatra’s O. K., Medan, 1.11.20, 20 M (MNHN, 1♂)*; same data but 20.2.18 (MNHN, 1 ex.); same data but 8.2.21 (MNHN, 1 ex.); same data but 9.8.1921 (MNHN, 3 ex.); same data but 11.8.1921 (MNHN, 1); same data but 18.8.1921 (MNHN, 1 ex.); same data but 10.9.1921 (MNHN, 1 ex.); "Corporaal, Medan, 30.10.17 / Corporaal comment / Museum Paris, Coll. M. Pic / Callimerus pectoralis Schklg [hw. by Schenkling]" (MNHN, 1♂); Sumatra, Padang Sidempoean, XII.1902-I.1903 (MNHN, 2 ex.); "Dolok Merangir, 18.VII-9.X.1980 / Sumatra, Dr. E. Diehl" (NHMB, 2 ex.); "42618 / Borneo, Labuan / Fry Coll. 1905. 100 / C. rusticus G. [hw. by Gorham] / Callimerus rusticus Gorham, det. Borneo, Perak [hw. by Fry]" (NHML, 1 ex.); Sud Borneo, Goenong Pandjang, Tanggarang, M. E.Walsh, VI.1937 (MNHN, 1 ex.).

Distribution

(Fig. 72). China (Yunnan), Malaysia, Indonesia (Sumatra, Borneo).