AnimaliaacceptedgenusAccepted

Amazhomidia

GBIF:119632591

Synonyms

ABOUT

Descriptions(4)

Diagnosis of genus. Heavily striate apically pointed scales on dorsal head, thorax and abdomen (Fig. 2), absent on antennae, legs, collophore and furcula; antennae with 4 segments, Ant. IV annulate, without apical bulb (Figs 10, 15); eyes 8 + 8; prelabral chaetae bifurcate; labral papillae absent (Figs 13 – 14); cephalic groove with scale-like chaetae (Figs 3, 20); macrochaetotaxy relatively dense; Abd. II – IV bothriotrichal formula 2, 3, 2; accessory microchaetae of bothriotrichal complexes elongated; ms and sens formula of Th. II – Abd. V as 1, 0 | 1, 0, 1, 0, 0 and 2, 2 | 1, 1, 2, 14, 3, respectively (Figs 13, 22 – 28); Abd. IV well developed, several times the length of Abd. III in the midline (Figs 1, 26 – 27); unguis with 3 inner (two basal paired and one median unpaired) and 2 large laterodorsal teeth; unguiculi I – II truncate, unguiculus III acuminate, with small external basal small tooth; tenent hairs capitate, slightly longer than unguis (Figs 33 – 35); tenaculum with 4 + 4 teeth and one basal, multi-laterally ciliate chaetae (Fig. 37); male genital plate papillate, surrounded by ciliate chaetae (Fig. 38); manubrium lateral face with long distal mac (Fig. 40); dental spines present and striated; mucro bidentate with basal spine reaching subapical tooth (Figs 41 – 42; Tab. 1).

Cipola, Nikolas Gioia, Morais, José Wellington De, Bellini, Bruno Cavalcante (2016): A new genus of Entomobryinae (Collembola, Entomobryidae) from Brazilian Amazon with body scales and dental spines. Zootaxa 4105 (3): 261-273, DOI: 10.11646/zootaxa.4105.3.3

Remarks. Amazhomidia gen. nov. is given generic status within the group of other Homidia - like genera because of a combination of characters. These are prelabral chaetae bifurcate, labial chaetae ciliated (except R sometimes smooth or absent), manubrium with long distal mac, and Abd. IV with two transverse rows of mac on anterior central region (Figs 3, 14, 19, 27, 40). These features combined with body scales, cephalic groove with very distinct scale-like chaetae and one row of ciliate spines on dens differ from all other genera of Entomobryinae.

Etymology. The genus was named after the region in which is was collected and because it is most similar to Sinhomidia in morphology.

Type species. Amazhomidia ducke sp. nov.

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CLASSIFICATION

Taxonomic Classification Tree

AnimaliaArthropodaEntognathaCollembolaEntomobryidaeAmazhomidia

Amazhomidia

NOMENCLATURE

Synonyms(1)

HimalanuraBaijal, 1958

synonym

MULTIMEDIA

Media Files(6)

FIGURES 1 – 10. Amazhomidia ducke gen nov. sp. nov.: 1, habitus of a fixed specimen in ethanol (lateral view); 2 – 8, different shaped of scales and chaetae: 2, pointed scale, 3, scale-like chaetae of cephalic groove, 4, ciliated chaeta, 5, sens type II on Abd. IV, 6, ciliated microchaeta, 7, accessory chaeta of bothriotricha, 8, dental spine; 9, trochanter chaetotaxy, arrow indicates the extra spine-like chaetae of anterior face; 10, Ant. IV segment, arrow indicates the beginning of annulations. Scale bars: 1 (0.5 mm), 2 – 8 (0.005 mm), 9 (0.05 mm), 10 (0.1 mm).