Aegidinus steinheili (Harold, 1880)

Frolov, Andrey V., Akhmetova, Lilia A. & Vaz-de-Mello, Fernando Z., 2019, Contribution to the knowledge of Aegidinus Arrow (Coleoptera: Scarabaeidae: Orphninae): new species and comments on the classification and nomenclature, Journal of Natural History 53 (11), pp. 725-747 : 735-736

publication ID

https://doi.org/ 10.1080/00222933.2019.1606953

publication LSID

lsid:zoobank.org:pub:09AA5C86-5138-42A7-9646-9FF2A7F46767

DOI

https://doi.org/10.5281/zenodo.3680500

persistent identifier

https://treatment.plazi.org/id/9F138799-E55D-B061-9B4D-5F09D26FFA5C

treatment provided by

Valdenar

scientific name

Aegidinus steinheili (Harold, 1880)
status

 

Aegidinus steinheili (Harold, 1880) , distinct species

( Figure 2 View Figure 2 (a–g))

Aegidium steinheili Harold, 1880: 42

Aegidinus guianensis nec Westwood, 1845: 175, auct.: Arrow 1904: 739, 1912: 31; Paulian 1984, 98; Colby 2009: 20 View Cited Treatment

Type locality. Colombia, Antioquia, San Carlos.

Type material examined

Lectotype. Male ( Figure 2 View Figure 2 (a)) at MNHN labelled ‘ S. Carlos/Columbia Aegidinus Steinheili Harold /Col. Benderitter ae. guianense/ Aegidinus guganesis (Westw.) R. Paulian det./ Aegidinus steinheili (Har.) R. Paulian det./Museum Paris/Museum Paris Coll. M. Pic/ HOLOTYPE / Aegidinus guianensis ’. The labels of this specimen do not agree completely with the data provided by Paulian (1984), but we believe that this is the specimen that Paulian intended to designate as the lectotype. There are cases in which Paulian did not properly label his material with type labels (Olivier Montreuil, Antoine Mantilleri, pers. comm.). However, this specimen is the only one bearing Paulian ’ s handwritten identification labels and it definitely belongs to the type series from San Carlos.

Paralectotypes. COLOMBIA. Antioquia: one female at MNHN labelled ‘ San Carlos /G. J. Arrow Vidit 1903./ Ex . Musaeo E. Steinheil / MNHN ’; two males at MNHN labelled ‘ San Carlos /G. J. Arrow Vidit 1903./sp. nov./ Ex . Musaeo E. Steinheil / Museum Paris / Aegidinus candezei (Preudhomme de Borre) det. J.B. Colby 2008/ MNHN ’; one male at MNHN labelled ‘ Nare (Wallis)/G. J. Arrow Vidit 1903./ Ex . Musaeo E. Steinheil / Museum Paris / MNHN 03 – 2005 View Materials ADSmith/ MNHN / Aegidinus guianensis (Westwood) det. J.B. Colby 2008 ’; one female at BMNH labelled ‘ S. Carlos / Aegidinus guianensis, Westw. Agrees with type (♀)/ Ex. Musaeo E. Steinheil /ex Coll. Oberthur. 1904 – 175./ Cotype / BMNH / Aegidinus guianensis Westwood INVALID TYPE det. J.B. Colby 2007 ’; one female at MNHN labelled ‘ San Carlos /G. J. Arrow Vidit 1903./ Ex . Musaeo E. Steinheil / Brit. Mus . Accepit ./ MNHN ’; one female at MNHN labelled ‘ San Carlos /G. J. Arrow Vidit 1903./ Ex . Musaeo E. Steinheil / MNHN ’; one female at MNHN labelled ‘ San Carlos /G. J. Arrow Vidit 1903./ Ex . Musaeo E. Steinheil / Museum Paris / MNHN 03 – 2005 View Materials ADSmith/ MNHN / Aegidinus guianensis (Westwood) det. J.B. Colby 2008 ’; one male at MNHN labelled ‘ San Carlos /G. J. Arrow Vidit 1903./ Steinheili Harold / Ex. Musaeo E. Steinheil / Brit. Mus . Accepit ./ Museum Paris / MNHN / Aegidinus guianensis (Westwood) det. J.B. Colby 2008 ’; one male at BMNH labelled ‘ San Carlos / Steinheili Har. [...]/ Ex . Musaeo E. Steinheil /ex Coll. Oberthur. 1904 – 175./ Cotype /BMHN/ Aegidinus guianensis Westwood INVALID TYPE det. J.B.Colby 2007 ’. Additional material examined

COLOMBIA. One male at MNHN, Canoas [not traced locality]. One male at IRSNB labelled ‘ Coll. R. I. Sc. N. B. Bresil Steinheil. ex coll. Candèze/ Aegidium Alatum Cast. Br. / Aegidinus guianensis (Westwood) det. J.B. Colby 2008 ’; a mislabelled specimen (see below) most probably collected in San Carlos.

Diagnosis

Aegidinus steinheili is most similar to Ae. petrovi Colby and Ae. teamscaraborum Colby but differs from them by having ventrolateral lobes of parameres long and slender (in lateral view), noticeably longer than dorsomedial lobes ( Figure 2 View Figure 2 (d – f)). The female has a punctation of the body similar to that of the male ( Figure 2 View Figure 2 (c)); the external female genitalia are as in Figure 2 View Figure 2 (g).

Remarks

Arrow (1904) considered Ae. steinheili ( Harold 1880) to be a synonym of Ae. guianensis ( Westwood 1845) although he did not study the genitalia of the specimens. Paulian (1984) and Colby (2009) followed Arrow, apparently because they did not study the type of Ae. guianensis and thus misinterpreted this species. Examination of the female type of Ae. guianensis and conspecific males (see above) showed that Ae. steinheili is distinct from it and all other Aegidinus species.

Paulian (1984) studied most of the Aegidinus specimens from San Carlos and one from Nare and, based on the external characters, identified them as two species, Ae. steinheili (= Ae. guianensis sensu Paulian ) and Ae. candezei . He designated the larger male from San Carlos, with the denser punctation of the body, as the lectotype of Ae. steinheili ( Figure 2 View Figure 2 (a)). We dissected all specimens of this series and found that characters of the male and female genitalia are congruent with the characters of the external morphology. In this material we found two male morphotypes and two female morphotypes and we agree with Paulian that they belong to the two species mentioned above.

In the collection of IRSNB there is a male specimen of this species with the labels ‘ Coll. R.I.Sc.N.B. Bresil Steinheil. ex coll. Candèze/ Aegidium Alatum Cast. Br. / Aegidinus guianensis (Westwood) det. J.B.Colby 2008 ’. It was among a small series of Aegidiellus alatus Laporte de Castelnau having the same printed labels ‘ Coll. R.I.Sc.N.B. Bresil [...] ’ but with varying additional data. These labels were placed by IRSNB technical staff under previously unlabelled specimens that were in the collection drawer next to the bottom label ‘ Aegidiellus alatus ’. The record of Ae. steinheili from Brazil ( Colby 2009, as Ae. guianensis ) is apparently based on this mislabelled specimen which is very similar to the larger males of the type series ( Figure 2 View Figure 2 (b)).

MNHN

Museum National d'Histoire Naturelle

IRSNB

Institut Royal des Sciences Naturelles de Belgique

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Hybosoridae

Genus

Aegidinus

Loc

Aegidinus steinheili (Harold, 1880)

Frolov, Andrey V., Akhmetova, Lilia A. & Vaz-de-Mello, Fernando Z. 2019
2019
Loc

Aegidinus guianensis

Colby J 2009: 20
Arrow GJ 1912: 31
Arrow GJ 1904: 739
1904