Tomolanguria aculeata (Gorham, 1887) Huang & Yang & Ge, 2020

Huang, Zheng-Zhong, Yang, Xing-Ke & Ge, Si-Qin, 2020, A new genus of Languriinae from Mexico (Coleoptera, Erotylidae), with comments on the potential mimic phenomenon of some languriines, ZooKeys 935, pp. 93-101 : 93

Tomolanguria aculeata (Gorham, 1887) comb. nov. Figure 1A-L

Languria aculeata : Gorham 1887: 11, tab. I, fig 17; Fowler 1908: 29; Schenkling 1928: 16; Blackwelder 1945: 426; Martins and Perreira 1965: 154.

Type locality.

Mexico, San Andrés Tuxtla.

Redescription.

Body length 8.5-9.5 mm. Body narrow and elongate, moderately convex. Integument finely and sparsely punctured. Head pitch black. Antenna brown except for last five antennomeres yellowish. Prothorax orange. Basal third of elytra coppery green or metallic blue, remainder deep brown or black, without metallic luster.

Antenna with 11 antennomeres and club composed of five fringed antennomeres. Antennomere III almost as long as antennomere IV, antennomere V subequal to antennomere VI, both of them shorter than each of antennomeres III or IV, antennomere VII subtriangular but slightly dilated, antennomeres VIII-XI dilated, apex of antennomere XI rounded. Head with fine punctation, nearly smooth. Clypeus broader than long. Eyes large, finely faceted. Mandibles robust and with outer side nearly straight.

Pronotum slightly convex, distinctly longer than broad, with sides rounded, constricted at the base. Pronotum finely punctured, without basal foveae. Anterior angle rounded, posterior angle acute but not produced. Lateral and basal margins beaded. Prohypomera smooth, without punctation or folds. Prosternal process long, with apex strongly bent downwards. Procoxal cavities open. Mesoventrite without punctation, nearly smooth (Fig. 2C ).

Scutellar shield short and cordiform, apex not acute. Elytra regularly striate-punctate, vanishing before apex. Elytral epipleura distinct, narrow. Elytra at humeri slightly broader than base of pronotum. Sides of elytra parallel, narrowed posteriorly. Each elytron with four shallow transverse depressions (Fig. 2F ). Elytral apex distinctly produced and acute, laterally curved, with four or five coarse denticles (Fig. 2J ). Abdomen finely punctured, postmetacoxal lines absent (Fig. 2E ).

Material examined.

Lectotype (BMNH), female, here designated, labeled: “Type” [circular label with red margin]// "Type. /Sp. figured." // "S. And. Tuxtla" // "Mexico./ Salle Coll."// “2336” [green label]// " Languria/ aculeata Chev./ apud Sallé” [handwriting]// "B. C. A., Col., VII./ Languria/ aculeata, Gorh."(Fig. 1D ). Paralectotypes (BMNH), two females, with the same labels (Fig. 1H, L ).

Distribution.

Mexico, San Andrés Tuxtla.

Figures

Figure 1. Tomolanguria aculeata (Gorham, 1887), comb. nov. A-D lectotype of T. aculeata: A dorsal habitus B ventral habitus C lateral view D labels E-H paralectotype of T. aculeata: E dorsal habitus F ventral habitus G lateral view H labels I-L second paralectotype of T. aculeata: I dorsal habitus J ventral habitus K lateral view L labels. Scale bars: 2 mm.

Figure 2. Comparison between Paederolanguria holdhausi Mader, 1939 and Tomolanguria aculeata (Gorham, 1887), comb. nov. A Holotype of Paederolanguria holdhausi Mader, 1939 B P. holdhausi, prosternum and mesoventrite with punctures, non-type C T. aculeata, prosternum and mesoventrite without punctures, paralectotype D P. holdhausi, abdomen, non-type E T. aculeata comb. nov., abdomen, paralectotype F lateral view of T. aculeata, black arrows show the depressions on the elytron, paralectotype G later view of body of P. holdhausi, black arrow shows the prosternal process nearly straight, non-type H same of T. aculeata, black arrow shows the prosternal process downwards, paralectotype I P. holdhausi, apex of the elytra, non-type J T. aculeata comb. nov., apex of elytra, paralectotype. Scale bars: 1 mm (A-C, I, J); 2 mm (D-H).