Semiardistomis flavipes (Dejean, 1831)

Valdes, Pavel, 2012, Notes about morphological features of the Western Hemisphere subtribe Ardistomina, and revision of genus Semiardistomis Kult (Coleoptera, Carabidae, Scaritinae, Clivinini), ZooKeys 210, pp. 19-67 : 44-45

Semiardistomis flavipes (Dejean, 1831) Fig. 58

Clivina flavipes Dejean, 1831: 510.

Ardistomis flavipes (Dejean): Putzeys 1846: 646; Lorenz 2005: 146.

Ardistomus flavipes (Dejean): Csiki 1927: 548; Blackwelder 1944: 27.

Ardistomis aenea Putzeys, 1866: 212 syn. n.

Ardistomis (Semiardistomis) britoni Kult, 1950: 316 syn. n.

Ardistomis (Semiardistomis) marani Kult, 1950: 315 syn. n.

Semiardistomis flavipes (Dejean); Erwin 2011: 234.

Type material.

Holotypeat MHNP, pinned, labeled: handwritten " Holotype Clivina flavipes Dej. des. S.W. Nichols 1984"/ handwritten on box "flavipes Dej. Brésil C. Dejean"/ red paper printed "Holotype".

Lectotype of Semiardistomis aenea , here designated, at IRSBN, glued on pinned card, labeled: green paper handwritten "R. Jan. Stevens"/ printed "Soc. Ent. Belg. Coll. Putzeys". Paralectotypes, here designated: 4 at IRSBN labeled as Lectotype. 1 at MHNP labeled as Lectotype.

Holotype of Semiardistomis brittoni at ADVA labeled: handwritten "Ardistomis brittoni Kt. Det. K. Kult 1948"/ "brittoni Kt. det. K.Kult"/ printed in red paper “TYPE” / handwritten "Argentina Tucuman".

Holotype of Semiardistomis marani at ADVA labeled: handwritten "Ardistomis brittoni Kt. Det. K. Kult 1946"/ "brittoni Kt. det. K.Kult"/ printed in red paper “TYPE” / handwritten "Bolivia 450m Sta Cruz Umg Buenavista Steinbach coll".

Type area.

Given by Dejean (1831: 510) as " Brésil ".

Diagnosis.

Body piceous with green brassy reflections. Elytral surface with isodiametric mesh pattern, microlines more or less evanescent toward center of elytral disc, striae obliterated in apical fourth, punctures moderately impressed in basal two-thirds, 3 setiferous punctures on interval 3. Abdominal sternum VII with 4+4 setiferous punctures.

Measurements and variation.

Variation of measurements (mm) and ratios for Semiardistomis flavipes (n=34) are: HL = 0,42-0,59-0,68; PL = 0,96-1,03-1,20; PW = 0,95-1,15-1,34; EL = 2,10-2,86-3,36; EW = 1,44-1,75-2,00; SBL = 3,55-4,48-5,16; PW/EW = 0,66; PW/PL = 1,11; PL/EL = 0,36; EW/EL = 0,61.

Variation of measurements (mm) and ratios for Semiardistomis brittoni (n=3) are: HL = 0,54-0,62-0,67; PL 0,84-1,03-1,09; PW 1,09-1,21-1,28; EL 2,75-3,03-3,20; EW 1,76-1,90-2,02; SBL 4,26-4,68-4,96; PW/EW 0,63; PW/PL 1,16; PL/EL 0,34; EW/EL 0,63.

Variation of measurements (mm) and ratios for Semiardistomis marani (n=1) are: HL = 0,58; PL 0,96; PW 1,09; EL 2,62; EW 1,66; SBL 4,16; PW/EW 0,65; PW/PL 1,13; PL/EL 0,37; EW/EL 0,63.

Species Semiardistomis brittoni and Semiardistomis marani measurements are a subset of that of Semiardistomis flavipes specimens studied. Variation in this species is found in the microsculpture on the elytral disc which varies from being distinct on the entire surface to being present only marginally, in the extent of the elytral striae, and the size of the punctures. Such variation is seen even within populations from the same locality.

Geographical distribution

( Fig. 58 ). The range of this species extends in central South America from western Brazil southward and westward to Paraguay, south of the Tropic of Capricorn.

Habitat and activity.

Label data indicate that specimens of this species were collected during day at the margins of small water bodies, on sand-slit substrate.

Material examined.

ARGENTINA. Tucuman (ADVA, 3); Salta Sierra Tartagal 14 Nov. 2006 (ADVA, 6). BOLIVIA. Santa Cruz Buena Vista 20 Feb. 1999 (FSCA, 9) Santa Cruz 450m Buenavista (ADVA, 1). BRAZIL. Mato Grosso, Pantanal 1 Sep. 2000 (PBPC, 2); Rondonia 62 km SW Ariquemes 15- 19 May 1996 (FSCA, 9); Mato Grosso Varzea Grande, Cuiaba 5 May 1972 (FSCA, 10); Minas Geraes (HECO, 3); Rio Jan. (IRSBN, 4). PARAGUAY. Rio Confusa 18 Jan. 1937 (IRSBN, 144)

Figures

Figure 58. Distribution map, illustrations of exemplar left elytra, and variability of members of the labialis species-group in South America. Value inside symbol indicates portion of basal elytra in which striae are impressed, (C, complete impressed). Scale bar 1 mm.