Microhoria Chevrolat, 1877

Kejval, Zbyněk & Chandler, Donald S., 2020, Generic revision of the Microhoriini with new species and synonymies from the Palaearctic Region (Coleoptera: Anthicidae), Acta Entomologica Musei Nationalis Pragae 60 (1), pp. 95-154 : 112-114

publication ID

https://doi.org/ 10.37520/aemnp.2020.007

publication LSID

lsid:zoobank.org:pub:7990B912-A3D4-40F7-B143-772FFDB5A119

persistent identifier

https://treatment.plazi.org/id/03C8343F-AA3E-106B-FEFA-890CC0A6FC76

treatment provided by

Tatiana

scientific name

Microhoria Chevrolat, 1877
status

 

Microhoria Chevrolat, 1877

( Figs 13–30 View Figs 7–14 View Figs 23–30 , 33–36 View Figs 31–38. 31 , 40–46 View Figs 39–46. 39, 40 , 51 View Figs 47–53. 47, 48 , 128–147 View Figs 123–137 View Figs 138–150. 138–147 , 151–155 View Figs 151–163. 151–155 )

Anthicus subg. Microhoria Chevrolat, 1877: 168 . Type species: Anthicus oedipus Chevrolat, 1860 , subsequent designation by BONADONA (1952).

Anthicus (Microhoria) : PIC (1911b): 30 (catalogue); WINKLER (1927): 849 (catalogue).

Microhoria : BONADONA (1952): 233 (genus status, subgenera); BONADONA (1955): 101 (characters, key to species, France); BONADONA (1974): 108 (list, key to genera, France); UHMANN (1976): 172 (key to genera); UHMANN (1978): 76, 79 (checklist); BONADONA (1990a): 21 (key to genera, France); BONADONA (1990b): 364 (characters, subgenera, key to species, France); BONADONA (1991): 124, 128 (characters, key to species, France); BONADONA (2013): 11, 82, 108 ( France); BUCCIARELLI (1980): 176, 191 (characters, key to genera and species, Italy); UHMANN (1992): 88, 140 (key to genera and species, Iberian Peninsula); KUBISZ & SZWAŁKO (1998):9, 32 (characters,checklist,key to species, Poland); CHANDLER et al. (2004): 113, 119 (nomenclature, list); CHANDLER et al. (2008): 438 (catalogue); ALONSO- ZARAZAGA (2013): 172, 180 (notes); BONADONA (2013): 11, 82 (characters, key to species, France); GOUVÈRS & PONEL (2014): 559 (checklist, France); ZAHRADNÍK (2017): 319 (checklist).

Microharia (misspelling): HORION (1956): 90 (note).

Bifossicollis Sahlberg, 1903a: 31. Type species: Anthicus iscariotes LaFerté-Sénectère, 1849, by monotypy.

Bifossicollis: CHANDLER et al. (2004): 113, 118 (list, nomenclature); ALONSO- ZARAZAGA (2013): 175, 176, 180 (notes).

Anthicus subg. Immicrohoria Pic, 1894: 72 . Type species: Notoxus fasciatus Chevrolat, 1834, subsequent designation by BONADONA (1952).

Anthicus (Immicrohoria) : PIC (1911b): 30 (catalogue); WINKLER (1927): 846 (catalogue).

Microhoria (Immicrohoria) : BONADONA (1952): 234 (new combination); BONADONA (1974): 108 (list of subgenera); BONADONA (1990b): 364 (characters); BONADONA (1991): 128 (characters); BUCCIARELLI (1980): 194 (characters); ANGELINI et al. (1995): 23 (checklist, Italy); NARDI (2003):58 (synonymy); CHANDLER et al. (2004): 120 (note); BONADONA (2013): 11, 82 ( France).

Microhoria subg. Platyoria [sic!] Bonadona, 1952: 234. Type species: Anthicus View in CoL terminatus W. L. E. Schmidt, 1842, by original designation.

Microhoria (Platyoria) : NARDI (2003): 58 (correction of original spelling).

Microhoria (Platyhoria) : BONADONA (1974): 108 (list of subgenera); BO- NADONA (1990b): 364 (characters); BONADONA (1991): 128 (characters); BUCCIARELLI (1980): 194 (characters); ANGELINI et al.(1995): 23 (check list, Italy); NARDI (2003):58 (correction of spelling, synonymy); CHAND- LER et al. (2004): 118 (note); BONADONA (2013): 11, 82, 108 ( France).

Microhoria subg. Submicrohoria Bonadona, 1952: 234 . Type species: Anthicus View in CoL plumbeus LaFerté-Sénectère, 1849, by original designation.

Microhoria (Submicrohoria) : BONADONA (1974): 108 (list of subgenera); BUCCIARELLI (1980): 194 (characters); NARDI (2003): 58 (synonymy); CHANDLER et al. (2004): 118 (note).

Anthicus subg. Clavicomus Pic, 1894: 70 , syn. nov. Type species: Anthicus longiceps LaFerté-Sénectère, 1849 , subsequent designation by BUCCIARELLI (1980).

Anthicus (Clavicomus) : PIC (1911b): 30 (catalogue); WINKLER (1927): 842 (catalogue).

Clavicomus : BONADONA (1964): 239; BONADONA (1974):108, 110 (list, key to genera); UHMANN (1976): 173 (key to genera); UHMANN (1978):76, 79 (checklist); BONADONA (1990a): 21 (characters, key to genera, France); BONADONA (1991):124 (character, key to genera, France); BUCCIARELLI (1980): 176 (characters, key to genera and species, Italy); UHMANN (1992):88, 131 (key to genera and species, Iberian Peninsula); ANGELINI et al. (1995): 23 (checklist, Italy); CHANDLER et al. (2004): 118 (note); ALONSO- ZARAZAGA (2013):174, 176, 180 (notes, synonymy); BONADONA (2013): 11, 79, 108 (characters, key to genera, France).

Clavicollis Sahlberg, 1903b: 55. Type species: Anthicus longiceps LaFerté-Sénectère, 1849 , subsequent designation by BUCCIARELLI (1980).

Clavicollis: CHANDLER et al. (2004): 113, 118 (nomenclature, list, synonymy); CHANDLER et al. (2008): 430 (catalogue); MIN et al. (2012): 276 (diagnosis, records); ALONSO- ZARAZAGA (2013): 175, 176, 182 (notes, synonymy); GOUVÈRS & PONEL (2014): 559 (checklist, France).

Pseudantichus Desbrochers des Loges,1868:80. Type species: Formicomus oliverii Desbrochers des Loges, 1868, by monotypy.

Pseudantichus:ALONSO- ZARAZAGA (2013): 178, 180,182 (note,synonymy).

Pseudanthicus (misspelling): CHANDLER et al. (2004):118 (note,synonymy); ALONSO- ZARAZAGA (2013): 178 (note on spelling).

Anthicus subg. Tenuicomus Pic, 1894: 69 , syn. nov. Type species: Anthicus View in CoL pumilus Baudi, 1877, subsequent designation by ALONSO- ZARAZAGA (2013).

Anthicus (Tenuicomus) : PIC (1911b): 30 (catalogue); WINKLER (1927): 844 (catalogue).

Tenuicomus: BONADONA (1974): 108, 110 (list, key to genera); UHMANN (1976): 173 (key to genera); UHMANN (1978): 76, 80 (checklist); BUCCIARELLI (1980): 176, 185 (characters, key to genera and species, Italy); UHMANN (1992): 88, 136 (key to genera and species, Iberian Peninsula); ANGELINI et al. (1995): 23 (checklist, Italy); CHANDLER et al. (2004): 121 (note); ALONSO- ZARAZAGA (2013): 174, 177, 179, 181, 182 (notes, type species designation, synonymy); BONADONA (2013): 11 (key to genera, France).

Tenuicollis Sahlberg, 1903b: 56. Type species: Anthicus pumilus Baudi, 1877, subsequent designation by ALONSO- ZARAZAGA (2013).

Tenuicollis: CHANDLER et al. (2004):113, 121 (nomenclature, list); CHAND- LER et al. (2008): 447 (catalogue); ALONSO- ZARAZAGA (2013): 175, 177, 182 (notes, synonymy).

Species/specimens examined. Microhoria dejeani (LaFerté-Sénectère, 1849), Corse, Pinetu, Z. Kejval det. ( ZKDC); M. fasciata (Chevrolat, 1834) , Greece, Peloponnesos, Kalogria, Z. Kejval det. ( ZKDC); M. oedipus (Chevrolat, 1860) , Morocco, Ifrane, Z. Kejval det. ( ZKDC); M. pallidula (Pic, 1892), Russia, Orenburg Region, Totskoye, Z. Kejval det. ( ZKDC, NMPC); M. paykulli (Gyllenhal, 1808), Spain, Teruel prov., El Portillo, Z. Kejval det., tentatively identified ( ZKDC); M. plumbea (W. L. E. Schmidt, 1842), France, Le Levandou, Z. Kejval det. ( ZKDC, NMPC); M. schimperi ( Pic, 1898) , Ethiopia (‘ MUSEUM PARIS ABYSSINIE SCHIMPER 430-50’), possibly syntype ( ZKDC); M. terminata (W. L. E. Schmidt, 1842) , Greece, Corfu, Agios Georgios, Z. Kejval det. ( ZKDC); M. venusta (A. Villa & J. B. Villa, 1833), Italy, Trentino-Alto Adige Region, Folgaria, Z. Kejval det. ( ZKDC); M. volxemi (Marseul, 1878), Portugal, Faro Carrapateira-Amado, Z. Kejval det., tentatively identified ( ZKDC); M. vosseleri ( Pic, 1894), Algeria, Aïn Sefra, Z. Kejval det. ( ZKDC).

Clavicomus antinorii ( Pic, 1894), Ethiopia, Scioa, Argu Agher, syntype (MCSN); C. apicordiger (Bonadona, 1954) , Morocco, Khenifra, P. Bonadona det. (ZSMC); C. caeruleicolor ( Pic, 1906) , Thailand, Mae Hong Son Province, Soppong, Z. Kejval det. (ZKDC); C. biguttatus Bonadona, 1964, Afghanistan, Tangi-Gharuh, paratype (ZKDC); C. callimus ( Baudi di Selve, 1877), Spain, Motril-Carchuna, G. Uhmann det. (ZKDC); C. fugax (LaFerté-Sénectère, 1849) , Myanmar, J. V. Helfer lgt., H. Krekich-Strassoldo det. (NMPC, ZKDC); C. fugiens (Marseul, 1876), Japan, Honshu, Osakafu Iwawakiyama, Z. Kejval det. (ZKDC); C. gigas (Pic, 1899), Turkey, Marmaris, Z. Kejval det. (ZKDC); C. henoni (Pic, 1892), Algeria, Misserghin, M. Pic det. (NHMW); C. heydeni ( Marseul, 1879) , Portugal, Odiáxere, G. Uhmann det. (ZKDC); C. longiceps (LaFerté-Sénectère, 1849) , Italy, Palermo, H. Krekich-Strassoldo det. (ZKDC); C. optabilis (LaFerté-Sénectère, 1849), France, Nice, P. Bonadona det. (MNHN); C. semiviridis (Pic, 1951), Ethiopia, Djem-Djem Forest, syntype (ZKDC); C. versicolor (Kiesenwetter, 1866), Spain, Valencia, Z. Kejval det. (NMPC, ZKDC).

Tenuicomus babaulti (Pic, 1921), Tanzania, Arusha District, Mto Wa Mbu env., Z. Kejval det. (ZKDC); T. barnevillei (Pic, 1892) , Spain, Valencia, Burjasot, H. Krekich-Strassoldo det. (ZKDC); T. cyanipennis (Grilat, 1886), Tunisia [no precise data], Z. Kejval det. (ZKDC); T. fuscomaculatus ( Pic, 1893), Algeria [no precise data], Z. Kejval det. (ZKDC); T. ocreatus ( LaFerté-Sénectère, 1847), Algeria, Bouïra, Z. Kejval det. (ZKDC); T. olivaceus (LaFerté-Sénectère, 1849), Spain, Malaga Province, Puente de Salina, Z. Kejval det. (ZKDC); T. pauperculus (LaFerté- Sénectère, 1849), Algeria, Miliana, H. Krekich-Strassoldo det., as Anthicus View in CoL pumilus (ZKDC); T. subcaeruleus (Pic, 1899), India, Himachal Pradesh, Keylong, Z. Kejval det. (ZKDC); T. viturati ( Pic, 1893) , Algeria, Ait Hassem, Z. Kejval det. (ZKDC).

Diagnosis. (i) mandibles almost exclusively with simple, at most uneven cutting edge, with small denticle distally on right mandible, Fig. 51 View Figs 47–53. 47, 48 (see Remarks); (ii) anterior margin of procoxal cavity with paired lateral incisions, similarly as to Fig. 50 View Figs 47–53. 47, 48 ; (iii) intercoxal process of proventrite almost exclusively well-developed (see Remarks); (iv) postcoxal bridge simple; (v) mesoventrite transverse, strongly expanded and rounded laterally, Fig. 13 View Figs 7–14 ; (vi) mesepisterna with transverse groove, Fig. 14 View Figs 7–14 ; (vii) mesepisterna narrowly separated medially; (viii) pore of mesothoracic gland situated at margin of mesothorax, orifice well-defined, separated from intersegmental membrane by sclerotized bridge; (ix) intercoxal process of abdomen more or less pointed or at most narrowly rounded apically; (x) posterior transverse carina of metacoxae fully developed, Fig. 40 View Figs 39–46. 39, 40 ; (xi) mesotibiae with two, metatibiae with one or two terminal spurs; (xii) basal-piece of tegmen well-developed, tubular.

Distribution. Afrotropical, Palaearctic and Oriental region (presently about 340 species).All Oriental species are known from higher altitudes of the Asian mainland. Afrotropical species are distributed in northeastern Africa (mostly Ethiopia), and their southernmost records originate from Tanzania.

Relationships. Microhoria is undoubtedly very close to Liparoderus and especially larger, robust species, having silvery setose markings of elytra (formerly classified in the subgenus Immicrohoria ) can be easily confused with it. Microhoria can be distinguished from Liparoderus by three characters (vii, viii, x), and at least the fully developed posterior transverse carina of the metacoxae (x) can be regarded as a derived character state.

Remarks. The type species of Microhoria is Anthicus oedipus . Its species name refers to conspicuously modified metatibiae in this species ( Fig. 139 View Figs 138–150. 138–147 ), and it seems likely that Chevrolat named his species after Oedipus, mythical Greek king of Thebes (who was named for his swollen feet). In this case the name should be treated as a noun in apposition, without change of suffix (ICZN, 31.2.1).

The intercoxal process of the proventrite is typically well-developed in Microhoria . It may be exceptionally reduced as in M. fasciata , but even this species has a simple postcoxal bridge that lacks a median process (small posterior protrusion of median carina is situated shortly before even posterior margin of this bridge). Similarly, the mandibles of Microhoria display rather uniform morphology ( Fig. 51 View Figs 47–53. 47, 48 ), but there is at least one species from Spain (unidentified, M. fasciata species-group, ZKDC) showing a small but distinct process that resembles the condition exhibited in Liparoderus ( Fig. 52 View Figs 47–53. 47, 48 ).

Clavicomus . Clavicomus is traditionally characterized by a somewhat elongate pronotum, which is more or less distinctly impressed laterally at the posterior half (BONA- DONA 1974, BUCCIARELLI 1980). Its type species, C. longiceps , shares all important characters of Microhoria (sensu stricto). The only two noteworthy differences outside of the secondary sexual characters are: mesoventrite with margins completely bordered (cf. Figs 26 View Figs 23–30 versus 14), and the mesoventrite disc being evenly convex and lacking submedian carinae (cf. Figs 25 View Figs 23–30 versus 13). As documented below (see also remarks under Tenuicomus), these two characters are subject to interspecific variation and/or they are shared by numerous species currently placed in Microhoria .

The submedian carinae of the mesoventrite are variably present in Microhoria (sensu lato), but may appear to be characteristic for more robust/sclerotized species treated formerly in the subgenera Microhoria (sensu stricto), Immicrohoria , and Submicrohoria. However, even these groups include aberrant species that lack or have rather slight carinae, e.g. M. paykulli and M. volxemi. Also, Clavicomus optabilis is undoubtedly much closer to Microhoria (sensu stricto), in having an incomplete submarginal sulcus of the mesoventrite (clearly absent laterally) and lacks a distinct submedian carinae. Its questionable position within Clavicomus was noted previously by BUCCIARELLI (1980).

Most (if not all) species of the former subgenus Platyhoria of Microhoria (which is most speciose in the Middle East) and Tenuicomus distributed from Turkey eastwards have a prominent submarginal sulcus of the mesoventrite, which is only shortly interrupted posteriorly at the area where the middle legs articulate (cf. Figs 24 View Figs 23–30 versus 26). They differ from Clavicomus longiceps by the reduced setose fringe of the mesepimera (cf. Figs 24 View Figs 23–30 versus 26, 34), and have the unique, tubular outflow channel for the elytral gland of the males ( Fig. 44 View Figs 39–46. 39, 40 ).

Clavicomus gigas from the eastern Mediterranean Region is undoubtedly very close to C. longiceps , as is suggested by its larger size, similar external appearance, and a number of details, e.g. swirled elytral setation, outflow channel of elytral gland forming cavity (minute, situated near somewhat tapering elytral apices) with pores and cuticular cones, and longer paired sclerites of the endophallus. On the other hand, it has a somewhat reduced setose fringe of the mesepimera (cf. Figs 36 View Figs 31–38. 31 versus 34), and differs by having an incomplete submarginal sulcus, as was discussed above for Microhoria (cf. Figs 28 View Figs 23–30 versus 26).

Clavicomus heydeni is a very distinctive species, showing unique sexual dimorphism (modified tarsi in males) together with a peculiar morphology of the tegmen, which is quite dissimilar to that of C. longiceps , see Figs 62 View Figs 59–63 , 64 View Figs 64–67 . It has a nearly complete submarginal sulcus of the mesoventrite, as is similarly seen in numerous Mediterranean Tenuicomus, e.g. T. barnevillei , T. viturati , and T. olivaceus (Figs 16, 22).

Finally, all Asian species of Clavicomus have a prominent submarginal sulcus of the mesoventrite, which may be shortly interrupted posteriorly at the place of articulation with the middle legs ( Fig. 30 View Figs 23–30 ), in combination with the strongly reduced setose fringe of the mesepimera ( Fig. 35 View Figs 31–38. 31 ). In addition, they differ from C. longiceps by possessing a single terminal metatibial spur plus some male characters, e.g. apical position of primary gonopore.

Tenuicomus. Tenuicomus is characterized by the comparatively short and simple pronotum, which is not impressed postero-laterally, lacking the so-called ‘fossetes lateralles’, and the more conspicuous setation of this latero-basal area ( BONADONA 1974). These characters are shared with a small group of externally uniform species distributed in the western part of the Mediterranean Region, including Tenuicomus ocreatus, that was listed as the type species by BUCCIARELLI (1980). However, ALONSO- ZARAZAGA (2013) found this designation invalid (the species was not originally included), and selected Anthicus pumilus as the type species.

Anthicus pumilus was described by BAUDI DI SELVE (1877) from an unstated number of specimens collected at the locality Misserghin in Algeria (Oran Province). It is currently treated as a junior synonym of Tenuicomus pauperculus ( CHANDLER et al. 2008: 49), and its type material was probably never examined (the collection of Baudi di Selve has been unavailable for some time). We have examined several specimens from northern Algeria (ZKDC, NHMW) identified as Anthicus pumilus by Hans von Krekich-Strassoldo. They agree with the descriptions of BAUDI DI SELVE (1877) and LAFERTÉ- SÉNECTÈRE (1847), the species remarks of PIC (1894), and their aedeagal form ( Fig. 85 View Figs 85–87 ) is very similar to the figures of T. pumilus by BUCCIARELLI (1980).

Tenuicomus pauperculus clearly differs from T. ocreatus ( Figs 141, 138 View Figs 138–150. 138–147 ), including the presence of well-developed ‘fossetes lateralles’, and thus does not fit the recent concept of Tenuicomus generated by BONADONA (1974) and BUCCIA- RELLI (1980), as already stated for T. pumilus by the latter author. On the other hand, T. pauperculus shares all major characters of Microhoria s. str., and the morphology and setation of the mesoventrite are essentially identical (cf. Figs 17, 18 versus 13, 14). Remarkably, this species is here classified within the Microhoria schimperi species-group in Section IV, with members of this species-group having the mesoventrite characters being somewhat variable, with a few possessing a complete submarginal sulcus (Figs 19, 20).

Based on the preceding comments, form of the submarginal sulcus and submedian carinae of mesoventrite proved to be variable characters, and are useless for separation of the discussed genera. Consequently, Clavicomus and Tenuicomus are regarded as junior synonyms of Microhoria .

NMPC

National Museum Prague

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Anthicidae

Loc

Microhoria Chevrolat, 1877

Kejval, Zbyněk & Chandler, Donald S. 2020
2020
Loc

Microhoria (Platyhoria)

BONADONA P. 2013: 11
ANGELINI F. & AUDISIO P. & BOLOGNA M. A. & DE BIASE A. & CISCOLO M. E. & NARDI G. & RATTI E. & ZAMPETTI M. F. 1995: 23
BONADONA P. 1991: 128
BUCCIARELLI I. 1980: 194
BONADONA P. 1974: 108
1974
Loc

Microhoria (Submicrohoria)

CHANDLER D. S. & NARDI G. & TELNOV D. 2004: 118
BUCCIARELLI I. 1980: 194
BONADONA P. 1974: 108
1974
Loc

Clavicomus

BONADONA P. 2013: 11
CHANDLER D. S. & NARDI G. & TELNOV D. 2004: 118
ANGELINI F. & AUDISIO P. & BOLOGNA M. A. & DE BIASE A. & CISCOLO M. E. & NARDI G. & RATTI E. & ZAMPETTI M. F. 1995: 23
UHMANN G. 1992: 88
BONADONA P. 1991: 124
BONADONA P. 1990: 21
BUCCIARELLI I. 1980: 176
UHMANN G. 1978: 76
UHMANN G. 1976: 173
BONADONA P. 1974: 108
BONADONA P. 1964: 239
1964
Loc

Microhoria

ZAHRADNIK P. 2017: 319
GOUVERS J. & PONEL P. 2014: 559
BONADONA P. 2013: 11
BONADONA P. 2013: 11
CHANDLER D. S. & UHMANN G. & NARDI G. & TELNOV D. 2008: 438
CHANDLER D. S. & NARDI G. & TELNOV D. 2004: 113
KUBISZ D. & SZWALKO P. 1998: 9
UHMANN G. 1992: 88
BONADONA P. 1991: 124
BONADONA P. 1990: 21
BONADONA P. 1990: 364
BUCCIARELLI I. 1980: 176
UHMANN G. 1978: 76
UHMANN G. 1976: 172
BONADONA P. 1974: 108
BONADONA P. 1955: 101
BONADONA P. 1952: 233
1952
Loc

Microhoria (Immicrohoria)

BONADONA P. 2013: 11
CHANDLER D. S. & NARDI G. & TELNOV D. 2004: 120
ANGELINI F. & AUDISIO P. & BOLOGNA M. A. & DE BIASE A. & CISCOLO M. E. & NARDI G. & RATTI E. & ZAMPETTI M. F. 1995: 23
BONADONA P. 1991: 128
BONADONA P. 1990: 364
BUCCIARELLI I. 1980: 194
BONADONA P. 1974: 108
BONADONA P. 1952: 234
1952
Loc

Microhoria subg. Platyoria

BONADONA P. 1952: 234
1952
Loc

Microhoria subg. Submicrohoria

BONADONA P. 1952: 234
1952
Loc

Anthicus (Microhoria)

WINKLER A. 1927: 849
PIC M. 1911: 30
1911
Loc

Anthicus (Immicrohoria)

WINKLER A. 1927: 846
PIC M. 1911: 30
1911
Loc

Anthicus (Clavicomus)

WINKLER A. 1927: 842
PIC M. 1911: 30
1911
Loc

Anthicus (Tenuicomus)

WINKLER A. 1927: 844
PIC M. 1911: 30
1911
Loc

Anthicus subg. Immicrohoria

PIC M. 1894: 72
1894
Loc

Anthicus subg. Clavicomus

PIC M. 1894: 70
1894
Loc

Anthicus subg. Tenuicomus

PIC M. 1894: 69
1894
Loc

Anthicus subg. Microhoria

CHEVROLAT L. A. A. 1877: 168
1877
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