Microhoria emgei ( Pic, 1897 )

Telnov, Dmitry & Degiovanni, Augusto, 2024, Notes On Some Greek Microhoria Chevrolat, 1877 (Insecta: Coleoptera: Anthicidae) With New Descriptions And Synonymy, Acta Biologica Universitatis Daugavpiliensis 24 (1), pp. 81-127 : 90-92

Microhoria emgei ( Pic, 1897) stat. restit.

( Figs. 6‒8 )

‘ Anthicus ruficollis ? var. Emgei ’ ‒ Pic 1897: 296 (description: ‘Sporades: Skiathos’).

Anthicus Emgei – Pic 1901a: 254 (change in rank, checklist, ‘? v. de ruficollis ’).

‘ Anthicus terminatus ? v. Emgei ’ – Pic 1901c: 150 (checklist, record: ‘Sporades’).

Anthicus nectarinus var. Emgei – Pic 1911: 62 (change in rank and a new synonym, checklist); Krekich-Strassoldo 1911: 76 (checklist, distribution: ‘Sporadi’ [Sporades]). Microhoria ( Platyoria [sic!]) terminata var. Emgei – Bonadona 1955: 117 (informal new combination, key).

Microhoria terminata var. emgei – Uhmann 1985: 201 (change in rank, record: North Macedonia, see note in Distribution below); Uhmann 1992: 167–168, figs 333–334 (illustrations).

Anthicus ruficollis var. Emgei – Bonadona 1990: 383 (synonym of M. (Platyhoria) terminata ); Bonadona 1991: 147 (synonym of M. (Platyhoria) terminata ); Bonadona 2013: 94 (synonym of M. (Platyhoria) terminata ).

Microhoria emgei – Chandler et al. 2008: 443 (checklist, synonym of M. terminata ); Telnov 2020a: 613 (checklist, synonym of M. terminata ); Telnov 2022: 291 (synonym of M. terminata ).

Type material studied. 1 syntype [not sexed] MNHN, labels not transcribed.

New material examined. 17♂ ADC ( Fig. 6A, C ): GRECIA: Alli Meria , Volos, 10.VI.2015, M. Malavasi leg. [printed] ; 16♂ ♀ DTC: GREECE, Sporades Islands , Skiathos Is., Achladia, 23‒30.vii.2022, leg. H.Brustel [printed] ; 24♂ ♀ DTC: GREECE, Sporades Islands , Skiathos Is., Cap de Diamanti, 6‒ 14.viii.2022, leg. H.Brustel [printed] .

Taxonomic change. This taxon is very peculiar in the shape of male terminalia and

Notes on Some Greek Microhoria Chevrolat, 1877 ( Insecta: Coleoptera : Anthicidae ) with New Descriptions and Synonymy genital organs and therefore is considered valid species and removed from synonymy with M. terminata .

Supplementary description. Belongs to the M. terminata species group. The male from Skiathos, Cap de Diamanti, total body length 2.7 mm. Head 0.6 mm long, across compound eyes 0.55 mm wide, pronotum 0.5 mm long, maximum width 0.5 mm, elytra 1.6 mm long, maximum combined width 1 mm. Forebody pale rufous to rufous, head darker than pronotum or not. Elytra yellow to yellowish rufous, darkened narrowly at base and apex and with external median dark spot touching lateral margin of elytron but broadly separated on disk. Mouthparts, antenna, and legs yellow to yellowish rufous, four terminal antennomeres more or less strongly darkened. Head nearly as wide as long, head base and posterior temporal angle rounded in one broad arc. Compound eye moderate, moderately protruding from lateral outline of head, nearly twice as long as tempus. Head dorsum slightly glossy, densely and moderately large punctate. Intervening spaces smooth, as wide as to (rarely) nearly twice as wide as punctures. Dorsal cranial setae yellowish, moderately long and dense. Antenna slightly enlarged in apical third. Antennomeres 8‒10 subtrapezoidal, shortened compared to antennomeres 1‒6. Penultimate antennomere distinctly longer than wide. Terminal antennomere elongate, apically rounded, about 1.5‒1.6× as long as penultimate antennomere, about as long as combined length of two previous antennomeres. Terminal maxillary palpomere securiform. Pronotum as long as wide, slightly narrower than head across eyes, rounded to subtruncate at anterior margin, broadly rounded at anterolateral angles. Pronotal disc slightly glossy, flattened in dorsal aspect. Anterior portion of pronotum wider than posterior, lateral margins subparallel in posterior half. Latero-basal pronotal fovea broad and deep. Pronotal punctures and intervening spaces similar as those on head dorsum. Dorsal pronotal setation similar to that on head. Scutellar shield small, apically broadly rounded. Elytra about 1.4‒1.6× as long as wide, laterally slightly rounded, rounded at apex, dorsally flattened. Humerus distinct, broadly rounded. Apex of elytron modified, gland opening pore minute, with a small, denticle-like process. Elytral surface slightly glossy, comparatively smaller and sparser punctate than forebody. Intervening spaces variable, generally narrower than to as wide as punctures. Elytral setae pale yellowish, moderately long and dense, not fully appressed, directed posteriorly. Metathoracic wings fully developed (functional). Legs without modifications, tibial terminal spurs paired. Basal metatarsomere about as long as combined length of remaining metatarsomeres. Tergite VII subtruncate at posterior margin ( Fig. 7D ). Morphological sternite VII broadly triangular, deeply V-shapely notched medially at posterior margin and with 3‒4 long (apical) and several shorter spines along notch margins ( Fig. 7E‒F ). Tergite VIII apically rounded and with scattered long setae, a long hair-like membranous lamina present. Morphological sternite IX Y-shaped, arms short ( Fig. 7G ). Aedeagus ( Fig. 7A–C ) with specific endophallic armature, tegmen apex shortly hoked.

Sexual dimorphism. Female ( Fig. 6C ) generally slightly more robust than male, elytral apex without modifications, tergite VII and morphological sternite VII apically rounded ( Fig. 8A‒B ), tergite VIII and morphological sternite XIII as in fig. 8C, morphological sternite IX rod-like ( Fig. 8C ).

Note. This species appears very close to M. pallidula ( Pic, 1892) sensu Bucciarelli (1980) in the shape and structure of the aedeagus, but the short, strongly sclerotized spine is not present in the endophallic armature (see note on M. pallidula sensu Bucciarelli (1980) below).

Ecology. Unknown.

Distribution. Greece: mainland (Thessaly), Sporades Archipelago (Skiathos). The record from Skopje (‘Üsküb’) by Uhmann (1985) considered dubious and likely based on misidentified specimens.

Chorotype. E-Mediterranean (3.03 EME).

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Dmitry Telnov, Augusto Degiovanni

Figures

Figure 6. Microhoria emgei (Pic, 1897) statt. restit. A – ♂ from Skiathos, Greece, habitus, dorsal view; B – ditto, dorsal forebody; C – ♀ from Volos, Alli Meria, Greece, habitus, dorsal view [not to scale]. Images: A. Degiovanni & D. Telnov.

Figure 7. Microhoria emgei (Pic, 1897) statt. restit., male genitalia and terminalia. A – ♂ from Alli Meria, Volos, Greece, aedeagus, lateral view; B – ♂ from Skiathos, Greece, aedeagus, lateral view; C – ditto, apical portion magnified; D – ditto, tergite VII, dorsal view; E – ditto, morphological sternite VII, ventral view: F – ditto, median part of posterior margin magnified; G – ditto, morphological sternite IX [not to scale]. Images: A. Degiovanni & D. Telnov.

Figure 8. Microhoria emgei (Pic, 1897) statt. restit., ♀ from Skiathos, Greece, terminalia. A – Tergite VII, dorsal view; B – Morphological sternite VII, ventral view; C – Tergite VIII, morphological sternites VIII and IX [not to scale]. Images: A. Degiovanni & D. Telnov.