Ochodaeus meridialis Paulsen, 2019

Paulsen, M. J., 2019, New species of Ochodaeus Dejean from Madagascar II (Coleoptera: Scarabaeoidea: Ochodaeidae), Insecta Mundi 706 (706), pp. 1-10 : 2-4

publication ID

http://doi.org/10.5281/zenodo.3673403

publication LSID

lsid:zoobank.org:pub:08CB0DA0-C83E-438F-AA97-8CD637F044A5

DOI

http://doi.org/10.5281/zenodo.3679987

persistent identifier

http://treatment.plazi.org/id/0381879F-FF97-6E5F-FF1C-9D03FC04FEA6

treatment provided by

Felipe

scientific name

Ochodaeus meridialis Paulsen
status

new species

Ochodaeus meridialis Paulsen   , new species

Type material. Holotype male ( CASC; Fig. 1a View Figure 1 ), labeled: a) “ MADAGASCAR: Tulear Prov. / Berenty Special Reserve , / elev 35 m; 8 km NW / Amboasary; 15–22.XI.2003 / 25° 01.26′ S, 46° 18.33′ E ” GoogleMaps   ; b) “ California Acad of Sciences / colls: M. Irwin, F. Parker, / R. Harin’Hala, malaise trap / spiny forest MA-02-22A-03” GoogleMaps   ; c) on red paper, “ Ochodaeus   / meridialis   / Paulsen / HOLOTYPE”. ( Fig. 1e View Figure 1 ) GoogleMaps   .

One male, one female paratypes ( CASC) labeled: a) “ MADAGASCAR: Tulear Prov. / Berenty Special Reserve, / elev 35 m; 8 km NW / Amboasary; 10–19.VI.2003 / 25° 01.26′ S, 46° 18.33′ E ” GoogleMaps   ; b) “ California Acad of Sciences / colls: M. Irwin, F. Parker, / R. Harin’Hala , malaise trap / spiny forest MA-02-22A-01” GoogleMaps   . Paratype female ( CASC) labeled: a) “ MADAGASCAR: Tulear Prov. / Berenty Special Reserve, / elev 35 m; 8 km NW / Amboasary; 22–30.VI.2003 / 25° 01.26′ S, 46° 18.33′ E ” GoogleMaps   ; b) “ California Acad of Sciences / colls: M. Irwin, F. Parker, / R. Harin’Hala , malaise trap / spiny forest MA-02-22A-04” GoogleMaps   . Paratype female ( JBHC) labeled: a) “ MADAGASCAR: Tulear / Province , Berenty Special / Reserve, elev 35 m, / 8 km NW Amboasary / 4–5 April 2004 ” GoogleMaps   ; b) “ 25° 01.26′ S, 46° 18.33′ E ” / “ California Acad of Sciences / colls: M. Irwin, F. Parker, / R. Harin’Hala , malaise trap / spiny forest MA-02-22A-16” GoogleMaps   . Paratype male ( CASC) labeled: a) “ MADAGASCAR: Tulear / Province , Berenty Special / Reserve, elev 35 m, / 8 km NW Amboasary / 23 June–4 July 2004 / 25° 01.26′ S, 46° 18.33′ E ” GoogleMaps   ; b) “ California Acad of Sciences / colls: M. Irwin, F. Parker, / R. Harin’Hala , malaise trap / spiny forest MA-02-22A-20” GoogleMaps   . Paratype male ( MJPC) labeled: a) “ MADAGASCAR: Tulear Prov. / Berenty Special Reserve, / elev 35 m; 8 km NW / Amboasary; 18–31. VII.2004 / 25° 01.26′ S, 46° 18.33′ E ” GoogleMaps   ; b) “ California Acad of Sciences / colls: M. Irwin, F. Parker, / R. Harin’Hala, malaise trap / spiny forest MA-02-22A-22” GoogleMaps   . Two paratype females ( CASC, FSCA) labeled: a) “ MADAGASCAR: Tulear / Province , Berenty Special / Reserve, elev 85 m, 8 km NW / Amboasary; 7–14.XII.2002 / 25° 00.40′ S, 46° 18.20′ E ” GoogleMaps   ; b) “ California Acad of Sciences / colls: M. Irwin, F. Parker, / R. Harin’Hala , malaise trap / gallery forest MA-02-22-08” GoogleMaps   . Paratype female ( CASC) labeled: a) “MADA- GASCAR: Tulear / Berenty Special Reserve, / elev 85 m, 8 km NW / Amboasary; 16–27.XII.2002 / 25° 00.40′ S, 46° 18.20′ E ” GoogleMaps   ; b) “ California Acad of Sciences / colls: M. Irwin, F. Parker, / R. Harin’Hala , malaise trap / gallery forest MA-02-22-10” GoogleMaps   . Paratype female ( MJPC) labeled: a) “ MADAGASCAR: Tulear / Berenty Special Reserve, / elev 85 m, 8 km NW Amboa- / asary; 30.XI–7.XII.2002 / 25° 00.40′ S, 46° 18.20′ E ” GoogleMaps   ; b) “ California Acad of Sciences / colls: M. Irwin, F. Parker, / R. Harin’Hala , malaise trap / gallery forest MA-02-22-07” GoogleMaps   . Paratype male ( MNHN) labeled: a) on blue paper, “ Museum Paris / Madagascar / Ambovombe / R. Decary 1925”.

All paratypes (n = 11) with label: on yellow paper, “ Ochodaeus   / meridialis   / Paulsen / PARATYPE ”.

GoogleMaps  

Description. Holotype male ( Fig. 1a View Figure 1 ). Coleoptera   : Scarabaeoidea: Ochodaeidae   . Length 7.3 mm. Width 3.7 mm. Color: Uniformly dark reddish brown; surface shiny. Head: Surface granulate; granules transverse, setose. Eyes large, globose; lacking ventral projection of canthus. Antennal club subequal to eye in size. Mandibles broadly concave, basal angle prominent (ventral portion strongly produced); apices blunt; left mandible with apex blade-like, distal internal tooth triangular; right mandible with simple apex and distal internal tooth triangular and closer to apex. Frons weakly convex. Clypeus trapezoidal, short (at most 1/3 as long as wide), with central tubercle; anterior margin lacking bead medially. Labrum shallowly emarginate. Mentum (as in Fig. 1d View Figure 1 ) 2 × wider than long, broadly excavated anteriorly; anterolaterally with knobby protuberance on each side. Pronotum: Form convex. Surface densely granulate; granules shiny, setose. Elytra: Form convex, somewhat elongate, elytra together slightly longer than wide. Surface with striae moderately impressed, punctate, surface smooth between punctures (except sutural stria with connecting groove); strial punctures separated by 1–2 puncture diameters, lacking setae. Intervals smooth, with small, setose punctures; setae longer than diameter of strial punctures. Legs: Protibia tridentate externally, with short, acute pollex directed anteriorly ( Fig. 1b View Figure 1 ). Profemur with apical tooth strong, acute. Mesofemur and metafemur with apical tooth reduced to rounded lobe. Metatibia cylindrical near base. Venter/Abdomen: Metasternum and abdomen sparsely punctate; punctures large with long, erect, golden setae. Pygidium punctate, setose; setae sparse. Stridulatory peg strongly bent, rasp-like, produced posteriorly ( Fig. 1c View Figure 1 ). Male genitalia: Sclerotized lobe on internal sac between parameres broadly triangular, internal sac with complex armature including a large sclerotized denticle. Paratype variation. Males (n = 4; length 8.7–10.2 mm; width 4.5–8.4 mm), females (n = 7. length 7.3–9.5 mm; width 3.5–5.0 mm). This species exhibits minimal sexual dimorphism, the protibiae being equal in the sexes and females apparently differing only by having the seta of the last abdominal segment recumbent rather than erect.

Remarks. The dark, knobby protuberance ( Fig. 1d View Figure 1 ) on each side of the mentum anteriorly will immediately distinguish O. meridialis   from all other Ochodaeus   species in Madagascar. Both males and females have a strong apical tooth on the profemur. This is a moderately large species, and at a glance it could be confused with smaller specimens of O. isoanalensis   .

Etymology. The name is a Latin masculine adjective in the nominative singular meaning ‘southerly, to the south’.

Distribution. This species thus far is known only from the extreme southern tip of the island in the vicinity of the type locality, Berenty Private Reserve ( Fig. 9 View Figures 9–10 ).

R

Departamento de Geologia, Universidad de Chile

FSCA

Florida State Collection of Arthropods, The Museum of Entomology

MNHN

Museum National d'Histoire Naturelle