Chlaenius (Pachydinodes) pictus Chaudoir, 1856

Ullah, Mishkat, Naeem, Muhammad, Mahmood, Khalid & Garner, Beulah, 2022, Addition to the knowledge of Tribe Chlaeniini Brullé, 1834 (Coleoptera: Carabidae) from Pakistan, Zootaxa 5115 (4), pp. 451-486 : 473-474

Chlaenius (Pachydinodes) pictus Chaudoir, 1856

( Fig. 8a )

Chlaenius pictus Chaudoir, 1856: 208 ; Chlaenius schoenherri Dejean, 1831: 626 .

Material examined. PAKISTAN • 1 ♂; Islamabad , NARC; 30 Apr. 2014; Mishkat leg.; pitfall traps; PMNH • 1 ♀; Islamabad, Faisal Mosque , Trail No. 6; 28 Jun. 2014; Mishkat leg.; PMNH • 1 ♀ ; Punjab, Layyah, Chak No 127; 05 Aug. 2010; Adnan Bodhla leg.; PMNH .

Measurements. Male (n=10): TL= 13.87 mm, HW= 2.62 mm, PL= 3.05 mm, PW= 3.91 mm, EL= 8.33 mm, EW= 2.57 mm. Ratios PL/PW= 0.78, HW/PW= 0.67 and EL/EW= 3.24. Female (n=10): TL= 14.52 mm, HW= 2.74 mm, PL= 3.04 mm, PW= 4.05 mm, EL= 8.67 mm, EW= 2.70 mm. Ratios PL/PW= 0.75, HW/PW= 0.67 and EL/EW= 3.21.

Diagnosis. Head black with metallic copper pinkish tinge, sides with green tinge; clypeus, frons moderately punctate, whereas vertex and neck wrinkled and densely punctate; labrum, mandibles, labial and maxillary palpi, antennal articles II–IX, coxae, tarsus reddish brown; antennal article I, tips of each palpi article, rest of the legs yellowish brown. Pronotum black with mostly metallic copper pinkish tinge and greenish tinge towards anterior angles, apical margin sparsely setiferous punctate to densely setiferous punctate at basal margin, laterally more convex; both angles blunt, baso-lateral fovea deep; lateral bead reddish brown. Elytra matt black with horse-shoe shaped yellowish-brown fascia/mark, upper part less serrated; striae with uniformly spaced punctures; intervals flat rough, very densely setiferous punctate (seta golden coloured), microsculpture isodiametrical. Venter black.

Comments. Ch. (P.) pictus is similar to Ch. (P.) hamifer ( Chaudoir 1856) in general habitus and elytra apical maculae. It differs on the basis of head and pronotum colour which is black with dark metallic coppery tinge; elytra black with horseshoe shaped mark begins from 3/4 th of the interval II, transversly approaching interval VIII and then running towards apex.Whereas, in hamifer , head and pronotum metallic green with very slight coppery tinge; elytra metallic green with horse-shoe shaped mark beginning from half of interval III to transversely approaching interval VIII and then running along interval IX up to apex. Ch. (P.) pictus is widely distributed from the west of Pakistan, the north of China to the southeast of Indonesia. In this current study itis recorded from the Islamabad and Layyah area.

Distribution. Myanmar ( Burma), China, Indonesia, India, Japan, North Korea, Nepal, South Korea, Thailand (Anichtchenko 2017) and Pakistan (first country record).

Figures

FIGURE 8. Dorsal habitus (a) Chlaenius (Pachydinodes) pictus Chaudoir, 1856 imaged from NHMUK collection; (b) Chlaenius (Pachydinodes) posticus (Fabricius, 1798) imaged from NHMUK collection; (c) Chlaenius (Parachlaenites) chlorodius Dejean, 1826 imaged from NHMUK collection; (d) Chlaenius (Parachlaenites) pretiosus Chaudoir, 1856 imaged from NHMUK collection.