Semiardistomis glabratus (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 : 34-36

publication ID	https://dx.doi.org/10.3897/zookeys.210.3042
publication LSID	lsid:zoobank.org:pub:DF32BC38-E839-4DC4-8EA0-FB6508EC7B2B
persistent identifier	https://treatment.plazi.org/id/B44C21D2-129F-25EC-CA86-1036CF3800A5
treatment provided by	ZooKeys by Pensoft
scientific name	Semiardistomis glabratus (Putzeys, 1866)
status

Treatment

Semiardistomis glabratus (Putzeys, 1866) Figs 3 View Figures 3–5 13 View Figures 13–21 24 View Figures 22–24 26 View Figures 25–26 27 View Figures 27–30 41-43 View Figures 41–44 57 View Figure 57

Ardistomis glabrata Putzeys, 1866: 213.

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

Ardistomis glabratus Putzeys: Lorenz 2005: 146.

Ardistomis (Semiardistomis) glabratus Putzeys: Kult 1950: 310.

Ardistomis (Semiardistomis) balthasari Kult, 1950: 309. syn. n.

Semiardistomis glabratus (Putzeys); Erwin 2011: 235.

Type material.

Lectotype, here designated, female (IRSNB), glued on cardboard pinned, genitalia attached in microvial, labeled: green paper handwritten "A. glabrata Pz. C Mvideo. (A. 21ª)"/ printed "Soc. Ent. Belg. Coll. Putzeys"/ printed "Syntype."

Paralectotypes, here designated:onefemale (IRSNB) labeled as Lectotype; one exemplar (MHNP) labeled: handwritten in box "glabrata Putz. Mvideo".

Holotype of Semiardistomis balthasari male (ADVA), glued on cardboard pinned, genitalia attached in microvial, labeled: handwritten "Ardistomis balthasari Kt. Det. K. Kult 1948"/ "balthasari Kt. det. K.Kult"/ printed in red paper “TYPE” / printed "San Ignacio Missions".

Type locality.

Given by Putzeys (1866: 213) as “Montevideo”, Uruguay.

Diagnosis.

Body piceous with green brassy reflections. Elytral surface smooth, striae reduced to basal third, impunctate, 4 setiferous punctures on interval 3, stria 2 absent. Profemur glabrous. Abdominal sternum VII with 5+5 setiferous punctures.

Habitus.

dorsal aspect, as in Fig. 41 View Figures 41–44 .

Mouthparts.

Labrum, dorsal aspect, as in Fig. 3 View Figures 3–5 . Labium, as in Fig. 13A View Figures 13–21 ; ligula, enlarged, as in Fig. 13B View Figures 13–21 .

Legs.

male protarsus as in Fig. 24 View Figures 22–24 .

Male genitalia.

as in Fig. 26 View Figures 25–26 .

Female genitalia.

as in Fig. 27 View Figures 27–30 .

Measurements and variation.

Variation of measurements (mm) and ratios for Semiardistomis glabratus (n=7) are: HL = 0,70-0,76-0,80; PL 1,44-1,51-1,60; PW 1,53-1,68-1,83; EL 3,56-3,84-4,13; EW 2,50-2,60-2,73; SBL 5,76-6,11-6,53; PW/EW 0,65; PW/PL 1,11; PL/EL 0,39; EW/EL 0,68.

Variation of measurements (mm) and ratios for Semiardistomis glabratus identified in collections as Semiardistomis balthasari (n= 11) are: HL = 0,67-0,78-0,86; PL 1,12-1,32-1,44; PW 1,34-1,49-1,63; EL 3,33-3,66-3,87; EW 2,08-2,36-2,56; SBL 5,15-5,76-6,11; PW/EW 0,63; PW/PL 1,13; PL/EL 0,36; EW/EL 0,65.

Kult (1950) separated Semiardistomis balthasari from Semiardistomis glabratus on the basis of two character states: differences in body size and length of elytral striae. Measurements show moderate variation in size between the populations studied (see above) but the ratios show no variations in body proportions. After studying different populations across South America, I found that the length of the elytral striae varies between populations from specimens with striae 4, 5 and 6 extended to the second dorsal puncture in interval 3 ( Fig. 42 View Figures 41–44 ) to specimens with striae 4 and 5 almost extended only to the first dorsal pore in interval 3, and stria 6 almost obliterated ( Fig. 43 View Figures 41–44 ). The pattern of variation is clinal from north to south.

Habitat.

Data from labels suggest that the species lives along standing water bodies and swamps.

Geographical distribution

( Fig. 57 View Figure 57 ). Widespread in South America, east of the Andes mountain range, from northern Brazil, north of the Equator, to Uruguay, south of the Tropic of Capricorn.

Material examined.

ARGENTINA. San Ignacio Misiones (ADVA, 2) Rio Salado (IRSNB, 12) Cordoba Argüello Sept 58 (MHNP, 8). BRAZIL. Oberaba (IRSNB, 9). PERU. Loreto 1 km E Hamburgo, Boca del Ingles Camp, 150 m 23 Aug 1991 (USNM, 8). Loreto, Pithecia 14 Aug 1989 (USNM, 5). Madre de Dios Pakitza 07 Oct 1990 (USNM, 5). URUGUAY. Montevideo (IRSBN, 5) (MHNP, 2). VENEZUELA. Amazonas, Dpto Rio Negro 28 Jan 1985 (USNM, 4).