Odontosomatula carltoni, Gimmel & Leschen, 2022

Gimmel, Matthew L. & Leschen, Richard A. B., 2022, Revision of the genera of Picrotini (Coleoptera: Cryptophagidae: Cryptophaginae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 62 (1), pp. 61-109 : 91-92

Odontosomatula carltoni sp. nov.

( Figs 50 , 78 )

Type material. Hඈඅඈඍඒඉൾ: female ( QCAZ), labeled: “ECUADOR: Azuay: Cajas, 25 km NW Cuenca, 3700 m 7 Jan. 1992, C.Carlton, R.Leschen #127, ex:beating”. Pൺඋൺඍඒඉൾ: ECUADOR: Aඓඎൺඒ: Cajas, 25 km NW Cuenca, 3700 m, beating, 7 January 1992, C. Carlton & R. Leschen (1, SEMC).

Diagnosis. This species may be distinguished from the other known (but undescribed) putative species of Odontosomatula by the presence of 8–9 teeth (instead of a single tooth) on each side of the pronotum ( Fig. 78 ), the lack of an emargination along the middle of each pronotal carina, and the absence of postcoxal lines on abdominal ventrite 1.

Description. Length 2.05–2.20 mm. Color of dorsal surface dark reddish-brown, basal 2/3 of elytra diffusely paler ( Fig. 50 ); antennae uniformly reddish-brown; undersurfaces and legs uniformly pale reddish-brown. Dorsal setae primarily golden, long, vestiture converging to central point on pronotum, elytral setae uniformly directed posteriorly; body devoid of erect setae. Ventral surfaces with dense, recumbent setae; gula, genae, and prosternum with coarse, dense punctation; hypomeron with a few large punctures centrally on disc; prosternal process covered with dense, suberect setae; punctation of metaventrite coarse but less dense than that of prosternum, distinctly finer medially; abdominal ventrites with punctures fine, denser than that of metaventrite.

Head with coarse, moderately dense punctation on frons, punctures separated by about one puncture diameter, with smooth and shiny interspaces. Antennomere 2 subovate, longer than wide, antennomere 3 slightly narrower, slightly longer than 2, antennomere 4 equal in width to 3, distinctly shorter than 3 and slightly shorter than 2; antennomere 11 rounded, slightly longer than 10, much shorter than 9 and 10 combined. Pronotal length/width ratio ~0.80, widest at about middle, width across anterior angles slightly greater than width across posterior angles; lateral edges gently arcuate, with slight sinuation posteriorly, with row of 8–9 sharp, posteriorly directed teeth along lateral carina, 4 large teeth in anterior half and 4–5 small teeth in posterior half ( Fig. 78 ); anterior angles slightly projecting, obtuse, posterior angles acute, slightly projecting, posterior margin weakly sinuate, with truncate scutellar lobe; pronotum with broad, very shallow basal transverse impression, without paramedial carinae; with small, shallow glabrous pits just medial of posterior angles and sublateral plicae present; pronotal punctation coarse, punctures separated by about one to two puncture diameters, with smooth and shiny interspaces. Elytra about 1.63× longer than combined width, about 1.38× wider than pronotum at greatest width, about 2.79× longer than pronotum at greatest length; discal punctures separated by about one and a half to two puncture diameters, coarser near basal margin, gradually becoming finer posteriorly; sutural stria complete, reaching nearly to scutellar shield anteriorly; disc with faint subbasal impression.Abdominal ventrite 1 without postcoxal lines. Male unknown.

Remarks. The two known specimens of this species are both female.

Etymology. Patronymic for Christopher Carlton, beetle specialist who accompanied the second author during a stress-free jaunt in the Polylepis forests of Ecuador.

Figures

Figs 46–54. Habitus of species of Picrotini. 46 – Notocryptus n. sp. 10 (Australia: NSW, Tas); 47 – Notocryptus n. sp. 11 (Australia: NSW, Qld, Vic); 48 – Notocryptus n. sp. 12 (Australia: NSW, Qld, Vic); 49 – Notocryptus n. sp. 13 (Australia: Qld); 50 – Odontosomatula carltoni sp. nov.; 51 – Odontosomatula n. sp. 1 (New Zealand); 52 – Orthoscelis transversus sp. nov.; 53 – Orthoscelis n. sp. 1 (Australia: NSW, Qld, Tas, Vic); 54 – Orthoscelis n. sp. 2 (Australia: ACT, NSW, Tas, Vic). Scale bars = 1 mm.

Figs 77–81. Characters of Picrotini. 77–78 – detail of pronotum. 77 – Chimaerocryptus johnsoni sp. nov.; 78 – Odonotosomatula carltoni sp. nov. 79 – pronotum and base of elytra, Humerocryptus n. sp. 1. 80 – antennal club, Paragnetaria slipinskii sp. nov. 81 – eye, Cryptothelypterus pteropilosus Leschen & Lawrence, 1991. Abbreviations: pp = paralateral plica.