Omophron testudo, ANDREWES, 1919

Valainis, Uldis, 2010, A review of genus Omophron Latreille, 1802 (Coleoptera: Carabidae) Palearctic fauna and distribution, Baltic Journal of Coleopterology 10 (2), pp. 105-128 : 119-120

OMOPHRON TESTUDO ANDREWES, 1919

Description: lenght: 7.0 – 7.5 mm; width: 4.5 – 5.0 mm. Colour: testaceous, underside (except apex) piceous, a patch on each side of disk of prothorax light brown; back and sides of head, a transverse rectangular basal patch on pro-thorax, with a narrow projection in middle to front margin, and an elytral pattern green. Treating the elytra as green, including suture to near apex, there are two very irregular fasciae, an apical patch, the whole of the marginal channel

Head flat, front nearly smooth, finely striate near eyes, vertex and sides coarsely punctate, clypeus bisetose, slightly emarginate and bordered, a transverse furrow across the middle, suture with an angle at middle, mentum with rounded lobes, epilobes narrow, not projecting beyond lobes, subocular ridge extending nearly to gular suture, the surrounding area finely rugose, and also (behind eyes) finely striate.

Prothorax moderately convex, transversely impressed at base, coarsely but not roughly coriaceous, coarsely punctate along base, rather sparsely in front, sides gently rounded in front and faintly sinuate behind, median line fine but distinct, not reaching margins.

Elytra ovate, convex, base unbordered, sides strongly dilated behind shoulder; 15-punctate-striate, the punctures small, indistinct at sides, intervals convex, more so at sides, with an exceedingly minute row of punctures along the middle of each. A fine microsculpture is present. The elytral pattern is as presented in Fig. 3.2.

Comparisons: O. testudo Andr. is similar to O. guttatum Chaud. which is distributed in Oriental region, but O. testudo Andr. Is larger and more nearly circular.. Head of O. testudo Andr. more roughly sculptured, more coarsely punctuate, clypeal suture with an angle in the middle, instead of semicircular, sides of prothorax more rounded, base flattened, surface more coarsely but less puncture. Intervals of elytra more convex, surface more shiny, front fascia extending inwards to interval 5 only (in O. guttatum Andr. it reaches 4), hind fascia and testaceous apical area wider, the latter with a more jagged front margin, punctures on prosternum and episterna fewer.

Distribution: PAR: IN: SM (new locality); ORR: VT; LO; MY

Processed material: India: Sikkim, Bashuk Rain Forest , 20.07.2002 (DUBC). During the research

6 specimens from the Oriental region have been processed as well .

Type locality: Indo China (holotype is deposited in BMNH.

References: Andrewes, 1919; Andrewes, 1929;