Phelister genieri, Caterino & Tishechkin, 2020

Caterino, Michael S. & Tishechkin, Alexey K., 2020, Recognition and revision of the Phelister blairi group (Histeridae, Histerinae, Exosternini), ZooKeys 1001, pp. 1-154 : 1

20. Phelister genieri sp. nov. Figs 13A, B , 14A, B , Map 8

Type material.

Holotype male: " Bolivia: Cochabamba, 105 km E Cochabamba, at Rio Carmen Mayo, 1800 m, 17°08'47"S, 65°43'55"W [17.1464, -65.7319], 6-8.II.1999, F. Génier, low yungas forest, ex. f.i.t. 99-033" / "Caterino/Tishechkin Exosternini Voucher EXO-00379" (CMNC). Paratype (1): Cochabamba, 117 km E Cochabamba at Lagunitas (-17.1061, -65.6825), 1000 m, 2/8/99-2/12/99, FIT, mountain evergreen forest, F. Génier, EXO-02994 (CMNC, 1ex.).

Diagnostic description.

Length: 2.52-2.76 mm (avg. 2.64 mm); width: 2.21-2.40 mm (avg. 2.30 mm). Body broadly rounded, depressed, sides explanate, rufescent, with very dense and conspicuous ground punctation throughout; frons rather broad, depressed along midline; supraorbital stria absent; frontal stria complete; epistoma subcarinate along sides; labrum emarginate and subcarinate apically; mandibles each with small basal tooth; antennal club elongate, with small setose patch near apex of dorsal surface; prescutellar impression absent; median pronotal gland openings small, obscured by punctures, but present ~ 2/3 from anterior margin; marginal pronotal stria complete, fine, continued around anterior margin; submarginal pronotal stria present close to marginal as a raised carina, disk deeply depressed along its inner edge; elytron with single, complete epipleural stria; outer subhumeral stria complete beneath strong lateral elytral carina, which may be the complete inner subhumeral stria; dorsal striae shallowly impressed but distinct, all complete, with 4th arched to sutural; pygidia densely covered with elongate punctures, pygidium weakly differentiated, with flat anterodorsal surface and short, curved posteroventral surface, similarly punctate throughout; prosternal keel slightly depressed, emarginate at base, striae obsolete; prosternal lobe weakly reflexed, with marginal stria complete; mesoventrite produced, its marginal stria weakly impressed, continued by postmesocoxal stria toward but not reaching middle of mesepimeron; mesometaventral stria weakly impressed, angulate at middle; lateral metaventral stria diverging to side, subparallel to postmesocoxal; 1st abdominal ventrite with incomplete lateral stria along inner edge of metacoxa; all ventrites punctate; all tibia slightly broadened; protibia with outer margin strongly dentate, bearing four or five marginal spines; protarsal setae of male not flattened; meso- and metatibiae slightly broadened, with a few spines along outer margins. Male: basal piece 1/3 length of tegmen; tegmen narrow at base, weakly and unevenly expanded to near apex, apices rounded; tegmen quite flattened, only weakly curved in lateral view; medioventral process present, projecting at basal fourth; median lobe almost 1/2 tegmen length, basal apodemes abruptly narrowed at bases.

Etymology.

We are pleased to name this species in honor of François Génier, collector of the type, and contributor of numerous valuable specimens to our histerid studies.

Distribution.

This species is only known from the type locality, Cochabamba, Bolivia.

Remarks.

As described above, this species is part of a related lineage comprising the preceding one and following two species. It is particularly close to P. marginatus but is easily distinguished by the much coarser dorsal punctation, and distinct elytral striae. Its body is also not so broad, and its sides less broadly explanate.

Figures

Map 8. Collecting records for Phelister vazdemelloi (black circles), P. praedatoris (white star), P. ifficus (black squares), P. genieri (hexagon), and P. marginatus (black stars).

Figure 13. A, B Phelister genieri: A dorsal habitus B ventral habitus C, D P. marginatus: C dorsal habitus D ventral habitus E, F P. vazdemelloi: E dorsal habitus F ventral habitus G, H P. dilatatus: G dorsal habitus H ventral habitus.

Figure 14. Male genitalia A, B Phelister genieri: A aedeagus, dorsal B aedeagus, lateral C, D P. marginatus: C aedeagus, dorsal D aedeagus, lateral E, F P. vazdemelloi: E aedeagus, dorsal F aedeagus, lateral G, H P. dilatatus: G aedeagus, dorsal H aedeagus, lateral.