Pristomachaeruscoarctatus ( LaFerté-Sénectère, 1851 )

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 : 455

Pristomachaeruscoarctatus ( LaFerté-Sénectère, 1851)

( Fig. 2a )

Callistus coarctatus LaFerté-Sénectère, 1851: 230 ; Callistomimus coarctatus Chaudoir, 1972: 383 .

Material examined. PAKISTAN • 1 ♂, 1 ♀; Islamabad, Qauid-e-Azam University, Rumli; 27 Aug. 2015; Mishkat leg.; PMNH .

Measurements. Male (n=10): TL= 5.26 mm, HW= 1.26 mm, PL= 1.13 mm, PW= 1.49 mm, EL= 3.35 mm, EW= 1.55 mm. Ratios PL/PW= 0.75, HW/PW= 0.84 and EL/EW= 2.16. Female (n=10): TL= 5.95 mm, HW= 1.34 mm, PL= 1.26 mm, PW= 1.62 mm, EL= 3.67 mm, EW= 1.27 mm. Ratios PL/PW= 0.77, HW/PW= 0.82 and EL/EW= 2.88.

Diagnosis. Head black with metallic violet tinge. Clypeus and neck smooth. Frons median area smooth, sides and vertex setiferous punctate. Labrum, mandibles, labial and maxillary palpi reddish brown. Antenna black except articles I–III dark brown to reddish brown. Pronotum reddish brick, cordiform, apical border straight and wider than basal margin, densely foveate with pubescence towards lateral depressions. Elytra black; base with a brick red sutural mark; each elytron with three yellowish marks; first mark towards first quarter transverse shaped from half of interval IV–VIII, second mark towards third quarter oblique shaped from interval III (touching II)–VIII, third towards tip of the apex triangular shaped. Elytra lateral border black. Legs long and slender, femora apex, all tibia base and apex, all tarsi apex black rest of the leg yellowish. Venter black.

Comments. This species is similar to P. littoralis ( Motschulsky, 1859) . However, P. coarctatus differ on the basis of a large body size, pronotum reddish brown; elytra base with reddish brown longitudinal mark along suture and touching both preapical oblique marks; apical transverse yellowish white mark from interval V–IX; preapical oblique mark yellowish white from interval V–VIII; apex with small rounded yellowish white mark, elytralateralborderyellowishwhite.

Distribution. India (Sikkim, Darjeeling; Uttar Pradesh), Nepal and Pakistan ( Kirschenhofer 2017).

Figures

FIGURE 2. Dorsal habitus (a) Pristomachaerus coarctatus (LaFerté-Sénectère, 1851) imaged from NHMUK Collection; (b) Pristomachaerus littoralis littoralis (Motschulsky, 1859) comb. nov. imaged from NHMUK collection.