Semiardistomis propinquus (Putzeys, 1866)

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 : 48

Semiardistomis propinquus (Putzeys, 1866) Figs 54 59

Ardistomis propinqua Putzeys, 1866: 214; Bates 1881: 35.

Ardistomus propinquus Putzeys: Csiki 1927: 548; Blackwelder 1944: 27.

Ardistomis propinquus Putzeys: Lorenz 2005: 146.

Ardistomis (Semiardistomis) propinquus Putzeys: Kult 1950: 302.

Semiardistomis propinquus (Putzeys); Erwin 2011: 237.

Type material.

Lectotype, here designated, male at IRSNB, glued on card, genitalia attached in microvial, labeled: green paper handwritten "A. propinqua Mex. ( Sallé) Chd."/ handwritten " Lectotype Ardistomis propinqua Putzeys det. DRWhitehead"/ "Ardistomus propinquus Putz P Basilewsky 1955"/ printed "Soc. Ent. Belg. Coll. Putzeys"/ "Syntype".

Paralectotypes, here designated: two specimens at IRSNB labeled as the lectotype. Another 3 paralectotypes at MHNP labeled: handwritten in box "propinqua Chaud. Mexique Las Peras. Sallé ".

Type area. Given by Putzeys (1866: 214) as "Mexique (Oaxaca)".

Diagnosis. Body piceous with green reflections. Elytral surface completely smooth, striae continuously impressed in basal 1/8, punctures deeply impressed in basal 2/3, most punctures with setae, 3 setiferous punctures on interval 3. Abdominal sternum VII with 4+4 setiferous punctures.

Habitus. dorsal aspect, as in Fig. 54 .

Measurements and variation.

Variation of measurements (mm) and ratios for Semiardistomis propinquus from Mexico (n=6) are: HL = 0,60-0,62-0,63; PL 1,03-1,14-1,25; PW 1,03-1,23-1,30; EL 3,31-3,47-3,63; EW 1,88-2,01-2,13; SBL 5,04-5,23-5,44; PW/EW 0,61; PW/PL 1,08; PL/EL 0,33; EW/EL 0,58.

Despite the presence of setiferous punctures (other than the usual three in interval 3) and the proportionally larger elytra, this species is markedly similar to Semiardistomis labialis and is possibly simply a hirsute form of that species. Similar variation has been documented for other Carabidae , including Agonum decorum (Say) ( Liebherr 1983).

Geographical distribution

( Fig. 59 ). records indicate that this species is restricted to mountains in southern Mexico.

Habitat and activity.

Label data indicate that exemplars of this species have been collected during the night at margins of a small pond.

Taxonomic note.

This species probably constitutes a morph of Semiardistomis labialis (Chaudoir). If this is shown to be so, the name Semiardistomis propinquus will become a junior synonym of the name Semiardistomis labialis .

Material examined.

In addition to types: MEXICO. Guanajuato (IRSNB, 3) Puebla 20 May 1973 (USNM, 42) Oaxaca Jul. 1964 (USNM, 14) Jalisco S. Guadalajara Jul 1964 (USNM, 4) Michoacan (USNM, 1) Chiapas May 1974 (FSCA, 12) Guerrero Picaya 12 Jun 2004 (CAS, 8) Morelos, Tepoztlan 27 Oct 2004 (CAS, 7).

Figures

Figure 59. Distribution map of members of the labialis species-group in Central America.

Figures 54 - 55. 54 Semiardistomis propinquus (Putzeys) 55 Semiardistomis viridis (Say). Dorsal aspect. Scale bar 1 mm.