Chlaenius (Chlaeniostenus) circumdatuscircumdatus Brullé, 1835

(Fig. 5a)

Chlaenius circumdatus circumdatus Brullé, 1835: 283; Chlaenius limbatus Dejean, 1826: 305; Chlaenius cupricollis Nietner, 1856: 387 .

Material examined. PAKISTAN • 1 ♀; Islamabad, Trail No. 6, Faisal Mosque; 18 Apr. 2015; Mishkat Ullah leg.; PMNH • 1 ♀; same collection data as for preceding; 06 Apr. 2014, Mishkat leg.; PMNH • 2 ♂, 2 ♀; same collection data as for preceding; 13.iv.2014, Mishkat leg.; PMNH • 1 ♀; Islamabad, Rawal Dam; 28 Mar. 2015; Mishkat leg.; PMNH • 1 ♂; Islamabad, near by PMNH; 23 Apr. 2014; Mishkat leg.; pitfall traps; PMNH .— Khyber Pakhtunkhwa • 3 ♂, 2 ♀; Swat, Manglore; 02 Sep. 2015; Mishkat leg.; PMNH • 1 ♀; Kohat; 22 May 2007; Chlaenius (Chlaeniostenus) circumdatus Mishkat Ullah 2017 det.; NIM.— Sindh • 1 ♀; Karachi; T . R . Bell leg.; NHMUK (H.E. Andrewes Collection 1945-97).

Measurements. Male (n=10): TL= 14.48 mm, HW= 2.07 mm, PL= 3.12 mm, PW= 3.41 mm, EL= 8.51 mm, EW= 2.64 mm. Ratios PL/PW= 0.91, HW/PW= 0.78 and EL/EW= 3.22. Female (n=10): TL= 14.08 mm, HW= 2.81 mm, PL= 3.12 mm, PW= 3.45 mm, EL= 8.62 mm, EW= 2.85 mm. Ratios PL/PW= 0.90, HW/PW= 0.81 and EL/EW= 3.02.

Diagnosis. Head metallic coppery green, frons and vertex sparsely setiferous punctate, neck wrinkled and densely setiferous punctate. Labrum, mandibles, anteena, labial palpi, maxillary palpi and tarsus reddish brown whereas legs and elytral lateral border yellowish. Pronotum metallic coppery green, moderately covered with deep wide punctures, antero-lateral angles rounded, apical margin slightly convex, lateral bead more rounded at midpoint and almost straight at postero-lateral angles, lateral furrows long, transverse wrinkles along median forrow and basal margin with longitudinal wrinkles. Elytra black with slightly greenish tinge, striae deep, intervals more convex slightly wrinkled with isodiametric microsculpturing, extremities of each interval with rows of setiferous punctures, elytra lateral border along interval IX yellowish brown. Venter shinning black.

Comments. This species closely resembles Ch. (Chlaeniostenus) nitidicollis in general habitus. Ch. (Chlaeniostenus) nitidicollis is smaller in size, elytra lateral border yellowish brown from humeral angle approaching middle extending to interval VIII, then shrinking abruptly occupying only interval IX upto apex and slightly expanding at apex without serrations. Ch. (Chlaeniostenus) circumdatus circumdatus is widely distributed in Pakistan. It was recorded from Swat, Kohat, Islamabad and Karachi.

Distribution. Bhutan, China (Sichuan; Yunnan), Japan, Mongolia, Nepal, Pakistan, Taiwan, India, Korea, Sri lanka, Pakistan (Khatri et al. 2016) and Thailand (Anichtchenko 2017; Lorenz 2018).