Semiardistomis deletus (Putzeys, 1846)

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 : 42-43

Semiardistomis deletus (Putzeys, 1846) Figure 58

Ardistomis deleta Putzeys, 1846: 648; 1866: 213.

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

Ardistomis deletus Putzeys: Lorenz 2005: 146.

Ardistomis (Semiardistomis) deletus Putzeys: Kult, 1950: 314, 316.

Ardistomis (Semiardistomis) emdeni Kult, 1950: 314, syn. n.

Semiardistomis deletus (Putzeys); Erwin 2011: 234.

Type material.

Lectotype, here designated,at MHNP, glued on cardboard, labeled: green paper handwritten "Deleta Putz Bresil Reiche"/ handwritten " Lectotype Ardistomis deleta Putz. des. S.W. Nichols 1984"/ handwritten on box "Deleta Reiche Brésil Chevrol"/ red paper printed "Lectotype".

Paralectotype, here designated, at HECO, pinned, labeled: green paper handwritten “Campos” / green paper handwritten "deleta (Reiche) Putz 130, 13 Brasilia type"/ red paper handwritten “deleta” / printed "Chevrolat Carabidae . Fr. V. d. Poll. Pres. 1909, E. B. Poulton"/ printed “17” / handwritten "Paralectotype Ardistomis deleta Putz. des. S.W. Nichols 1984"/ handwritten "Type col: 805 Ardistomus deleta Putzeys".

Holotype of Semiardistomis emdeni female (ADVA), glued on pinned card, genitalia attached in microvial, labeled: handwritten "a. emdeni Kt. det. K.Kult, 1948"/ printed on red paper “TYPE” / printed "Corumba Matt. Grosso".

Type area.

Given by Putzeys (1846: 648) as " Brésil "

Diagnosis.

Body piceous with green brassy reflections. Elytral surface with isodiametric mesh pattern, striae impressed in basal eighth, punctures well impressed in basal half, 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 deletus (n=17) are: HL = 0,53- 0,63- 0,74; PL = 0,80- 1,06- 1,20; PW = 0,96- 1,19- 1,32; EL = 2,56- 3,11- 3,60; EW = 1,60- 1,93- 2,28; SBL = 3,98- 4,80- 5,44; PW/EW = 0,62; PW/PL = 1,12; PL/EL = 0,34; EW/EL = 0,62.

Variation of measurements (mm) and ratios for type series of Semiardistomis emdeni (n=5) are: HL = 0,58-0,61-0,64; PL = 1,02-1,05-1,09; PW = 1,12-1,20-1,28; EL = 2,78- 2,95 -3,14; EW = 1,76-1,89-2,02; SBL = 4,38-4,61-4,86; PW/EW = 0,64; PW/PL = 1,15; PL/EL = 0,36; EW/EL = 0,64.

Kult (1950) separated Semiardistomis emdeni from Semiardistomis deletus based on differences in body proportions. My measurements indicate that the differences noted are not significant. In fact, it is difficult in this species-group to distinguish any forms based on body proportions since measurements for all species overlap. Diagnostic combination for this species is expressed in an extreme sense, so intermediate forms are found between this point and Semiardistomis flavipes or Semiardistomis semipunctatus .

Geographical distribution

( Fig. 58 ). This species is known from southeastern South America, south of the Tropic of Capricorn.

Material examined.

ARGENTINA. Corrientes, Lago Ibera & Santo Tome 26 Sep 1997 (ADVA, 22); Rio Salado (IRSNB, 3); Misiones, Posadas Nov 1962 (MHNP, 6); Formosa Dec 1953 (MHNP, 11). BRAZIL. Nova Teutonia Dec. 1952 (MHNP, 8); Bresil (MHNP, 9); Sta Catarina Nova Teutonia Nov. 1972 (CAS, 17). PARAGUAY. Paraguari Ybycui, La Rosada 13 Apr. 1980 (USNM, 43); Dep. Central. Caacupé road Arroyo Yagua Resa 10 Apr. 1980 (USNM, 2) URUGUAY. Montevideo (IRSBN, 1).

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.