Spanglerelmis Polizei & Bispo, 2022

Polizei, Thiago Tadeu Silva, Costa, Lucas de Souza Machado & Bispo, Pitágoras da Conceição, 2022, Spanglerelmis, a new genus of Elmidae (Insecta: Coleoptera) from Brazil with new species and biological notes, European Journal of Taxonomy 813 (1), pp. 33-56 : 35-40

publication ID	https://doi.org/ 10.5852/ejt.2022.813.1731
publication LSID	lsid:zoobank.org:pub:122A927A-9DDA-40BC-BF2A-D0C206717C03
DOI	https://doi.org/10.5281/zenodo.6468064
persistent identifier	https://treatment.plazi.org/id/C46A6C28-9B3C-448C-A7C4-C6D2C4F051DD
taxon LSID	lsid:zoobank.org:act:C46A6C28-9B3C-448C-A7C4-C6D2C4F051DD
treatment provided by	Felipe
scientific name	Spanglerelmis Polizei & Bispo
status	gen. nov.

Treatment

Genus Spanglerelmis Polizei & Bispo gen. nov.

urn:lsid:zoobank.org:act:C46A6C28-9B3C-448C-A7C4-C6D2C4F051DD

Figs 1–10 View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig

Type species

Spanglerelmis xiririca Polizei & Bispo sp. nov., by present designation.

Diagnosis

Spanglerelmis Polizei & Bispo gen. nov. can be distinguished from other elmid genera by the following combination of characters: 1) pronotum covered by punctures, without transverse, longitudinal, or oblique impressions, sulci or gibbosities on disc ( Figs 1A, E View Fig , 2A View Fig , 6A, C View Fig , 8B View Fig , 9A View Fig ); 2) sublateral carinae on pronotum sinuous reaching the anterior and posterior margins of pronotum, converging toward apex ( Figs 1A, E View Fig , 2A View Fig , 6A, C View Fig , 8B View Fig , 9A View Fig ); 3) elytra with a carina on interval III and two sublateral carinae on intervals V and VI ( Figs 1A, E View Fig , 2A View Fig , 6A, D View Fig , 9A View Fig ); 4) disc of prosternum with a pair of carinae on the posterior half ( Figs 1B, F View Fig , 2B View Fig , 7A, C View Fig , 9B View Fig ); 5) sides of mesoventrite strongly raised ( Figs 1B, F View Fig , 2B View Fig , 7A– C View Fig , 9B View Fig ); 6) femora with an oblique belt of tomentum dorsally ( Figs 1B, F View Fig , 2B View Fig , 7B View Fig , 9B View Fig ) and a transverse belt ventrally ( Figs 1A, E View Fig , 2A View Fig , 6A, B View Fig , 9A View Fig ); and 7) disc of abdominal ventrites 1–4 glabrous, sides densely covered by tomentum ( Figs 2B View Fig , 7B View Fig , 8B View Fig , 9B View Fig ), and ventrite 5 completely and densely covered by tomentum. Morphologically, the new genus resembles Neoelmis Musgrave, 1935 (sharing the body shape and the elytral strongly punctate); Microcylloepus Hinton, 1935 (sharing the body shape, the elytral carinae pattern, and disc of prosternum with a pair of carinae on the posterior half), and Elachistelmis Maier, 2012 (sharing the body elongated and pronotum without any kind of impression). However, these three genera differ from Spanglerelmis Polizei & Bispo gen. nov. by the following characteristics: 1) Neoelmis has pronotum with a strongly transversal impression and a constricted medially sublateral carinae; elytra with just one sublateral carina; sides of mesoventrite not raised; femora densely covered by tomentum; and disc of the abdominal ventrites 2–4 covered by tomentum; 2) Microcylloepus has the pronotum with transverse impression on the apical third, with a broad median impression, and with two oblique subbasal impressions on disc and sides of mesoventrite not raised; and 3) Elachistelmis has sublateral carinae on pronotum straight and divergent in toward apex; elytra with just the sublateral carinae; sides of mesoventrite not raised and femora glabrous.

Etymology

The name is a combination of Spangler (in honour of Dr Paul J. Spangler 1924–2010, a pioneer of studies of Neotropical aquatic beetles, who initially indicated it could be a new genus) plus elmis, the nominate genus of the family Elmidae . Gender feminine.

Description

HEAD ( Figs 1A–C, E–G View Fig , 2–3 View Fig View Fig , 6A View Fig , 7A, C View Fig , 8–9 View Fig View Fig ). Partially retractable ( Figs 1A–C, E–G View Fig , 8B View Fig , 9B View Fig ); dorsal surface punctate and covered by setae, without impressions; eyes protruding laterally; antennae filiform with 11 antennomeres, each one covered by few, very short and thin setae at apex ( Figs 2 View Fig , 6A View Fig , 7A, C View Fig , 8A View Fig , 9 View Fig ); clypeus broad, ornamented as the other parts of head.

THORAX ( Figs 1A–C, E–G View Fig , 2 View Fig , 6 View Fig , 7–8B View Fig View Fig , 9A–B View Fig ). Pronotum ( Figs 1A, E View Fig , 2A View Fig , 6A, C View Fig , 8B View Fig , 9A View Fig ) as long as wide; anterior margin slightly arcuate; lateral margin arcuate and slightly crenulated; posterior and anterior angles acute; posterior margin smooth with two prescutellar fovea; disc surface punctured, without transverse, longitudinal, or oblique impressions, sulci or gibbosities ( Figs 1A, E View Fig , 2A View Fig , 6A, C View Fig , 9A View Fig ); sublateral carinae strongly sinuous, reaching anterior and posterior margins of pronotum, converging toward apex ( Fig. 6C View Fig ). Elytra ( Figs 1A, E View Fig , 2A View Fig , 6A, D View Fig , 9A View Fig ) longer than wide; moderately convex dorsally; lateral margins moderately explanate; apices rounded; humeri rounded; elytral surface strongly striate-punctate, with a row of setae between the punctures ( Figs 1A, E View Fig , 2A View Fig , 6A, D View Fig , 9A View Fig ); carinae on intervals III, V and VI. Epipleura narrow, anteriorly wider; glabrous, without tomentum or row of granules ( Figs 1B–C, F–G View Fig , 2B View Fig , 7 View Fig , 8B View Fig , 9B View Fig ); at least partly concealed posteriorly by produced lateral margins of the abdominal ventrites. Prosternum ( Figs 1B–C, F–G View Fig , 2B View Fig , 7A, C View Fig , 8B View Fig , 9B View Fig ) declined anteriorly and concealing the head in repose; lateral margins with a belt of tomentum ( Fig. 1G View Fig ); disc with a pair of carinae longitudinal reaching the posterior half ( Figs 1B, F View Fig , 2B View Fig , 7A, C View Fig , 9B View Fig ). Prosternal process ( Figs 2B View Fig , 7A, C View Fig , 9B View Fig ) slightly narrow, lateral margins converging posteriorly, apex rounded. Proepimeron and proepisternon covered by tomentum. Mesoventrite with a mesoventral cavity to receive the prosternal process; sides strongly raised ( Figs 1B, F View Fig , 2B View Fig , 7A–C View Fig , 9B View Fig ); mesoepimeron covered by tomentum. Metaventrite ( Figs 1B, F View Fig , 2B View Fig , 7B, D View Fig , 8B View Fig , 9B View Fig ) longer than mesoventrite, with discrimen strongly depressed (male) ( Figs 1B, F View Fig , 8B View Fig , 9B View Fig ), and with the lateral region covered by tomentum. Legs ( Figs 1A–C, E–G View Fig , 2 View Fig , 6A–B View Fig , 7 View Fig , 8B View Fig , 9A–B View Fig ). Legs with pro and mesocoxae rounded, and metacoxae transverse. Trochanter as long as wide. Femora narrowed distally; with an oblique belt of tomentum dorsally ( Figs 1B, F View Fig , 2B View Fig , 7B View Fig , 9B View Fig ) and a transverse belt ventrally ( Figs 1A, E View Fig , 2A View Fig , 6A–B View Fig , 9A View Fig ). Tibiae thin, each with two fringes of tomentum on pro and mesotibiae and a single fringe on metatibia; and with a row of spines on protibia. Tarsal formula 5–5–5. Tarsus ( Figs 1C, G View Fig , 2B View Fig , 6A–B View Fig , 7–8B View Fig View Fig , 9B View Fig ) elongated, with short setae on ventral surface. Claws simple and large.

ABDOMEN. Five ventrites ( Figs 2B View Fig , 4 View Fig , 7A–B, D View Fig , 8B View Fig , 9B View Fig ); strongly convex in cross section; disc of ventrites 1–4 glabrous, punctured, bearing scattered setae, and laterally densely covered by tomentum ( Figs 2B View Fig , 7B View Fig , 8B View Fig , 9B View Fig ); ventrite 5 completely and densely covered by tomentum, laterally emarginate, and posteriorly rounded.

MALE GENITALIA ( Figs 1D, H View Fig , 4D–F View Fig , 9C–E View Fig ). Symmetrical, robust, and very sclerotized. Phallobase tubular. Parameres with sensorial pores. Penis with fibula and corona absent.

LARVAE. Unknown.