Penthicus (Myladion) alashanicus (Reichardt, 1936)

Long, Jia, Guo-Dong, Ren & You-Zhi, Yu, 2013, Descriptions of eleven Opatrini pupae (Coleoptera, Tenebrionidae) from China, ZooKeys 291, pp. 83-105 : 91-92

Penthicus (Myladion) alashanicus (Reichardt, 1936) Fig. 3: 10-18

Redescription.

Male. Body sparsely covered with short setae on surface of pronotum, abdominal segments and elytral sheath. The total number of setose tubercles and setae on pronotal borders, hypomeron, vertex, mandibles and the last segment of maxillary palpus about 26-30 and 24-32, respectively.

Head bent at acute angle to pronotum, each side with an obscure groove between clypeus and gena. Anterior border of labrum distinctly emarginated in middle. Oculus oval.

Pronotum: transverse, widest near middle, with the anterior part distinctly narrowed and the posterior part slightly narrowed; anterior border broadly emarginated and the emargination distinctly protuberant in middle; lateral borders broadly protuberant, posterior border broadly protuberant ( Fig. 3 : 13); anterior angles acutely rounded, posterior angles obtusely sharp; disc flat, with short and narrow furrows.

Mesonotum slightly convex in middle of posterior part, posterior border protuberant. Posterior border of metanotum straight.

Elytral sheath striped and sparsely setose. Metathoracic wing sheath incompletely shrouded by elytral sheath ( Fig. 3 : 10-12).

Abdominal segments VI-IX curved ventrally. The width of abdominal segments I-VI subequal to each other. Posterior border of abdominal sternite VIII emarginated in middle, each side of the emargination with a long seta. Posterior border of abdominal tergite IX broadly emarginated in middle; urogomphi diverging from each other, BUL longer than UL ( Fig. 3 : 15-16). Abdominal tergites I-VII each with a concaveness between its lateral process and lateral border in middle, lateral processes each with 2 equally large and several minute setose tubercles along outer border, of which 0-1 minute setose tubercle presents in front of large setose tubercle I, 2 minute setose tubercles between large setose tubercles I and II, 3 minute setose tubercles behind large setose tubercle II ( Fig. 3 : 17-18). Outer borders of lateral processes of abdominal tergites I-VI slightly emarginated in middle. Spiracles of abdominal tergites I-VI nearly rounded, slightly convex.

Gonotheca without apophysis.

Female. Unknown.

Measurements.

BL: 11.0 mm; PL: 2.7 mm; PW: 3.7 mm; MSL: 0.9 mm; MTL: 0.7 mm; UL: 0.7 mm; BUL: 1.4 mm.

Material examined.

adults collected information: 7 June 1999, Longshou Moutain, Shandan County, Gansu, China; pupation date: 31 Auguest 1999.

Remarks.

This species was included in the key of tenebrionid pupae by Yu et al. (1999), but only mentioned with some characters for identification. Here its morphological characters are described in detail and provided with the photos for the first time.

Figures

Figure 3. 1 - 9 Eumylada punctifera (Reitter, 1889) 1 Pupal habitus in dorsal view 2 Pupal habitus in lateral view 3 Pupal habitus in ventral view 4 Pronotum 5 Head 6 Urogomphi in dorsal view 7 Urogomphi in ventral view 8 Lateral process of abdominal tergite V 9 Lateral process of abdominal tergite VII 10 - 18 Penthicus (Myladion) alashanicus (Reichardt, 1936) 10 Pupal habitus in dorsal view 11 Pupal habitus in lateral view 12 Pupal habitus in ventral view 13 Pronotum 14 Head 15 Urogomphi in dorsal view 16 Urogomphi in ventral view 17 Lateral process of abdominal tergite V 18 Lateral process of abdominal tergite VII.