Phelister globosus, 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

8. Phelister globosus sp. nov. Figs 7A, B , 8A, B , Map 5

Type material.

Holotype male: " Ecuador: Orellana, Tiputini Biodiversity Station 0°38.2'S, 76°8.9'W. Flight intercept FIT7-1. 27-31 July 2008. A.K.Tishechkin" / "Caterino/Tishechkin Exosternini Voucher EXO-00365" (FMNH). Paratypes (45): Ecuador: Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 7/27/08-7/31/08, FIT, A. Tishechkin, EXO-00365 (AKTC, CHND, LSAM & MSCC, 11ex.); Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 7/29/08-8/3/08, FIT, A. Tishechkin, EXO-00365 (AKTC & LSAM, 3ex.); Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 7/29/08-8/3/08, FIT, A. Tishechkin, EXO-00365 (AKTC, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 8/3/08-8/6/08, FIT, LSAM Team, EXO-00365 (AKTC, CHND, LSAM & MSCC, 15ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 6/18/99-7/20/99, FIT, A.K. Tishechkin (LSAM, 5ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 7/11/08-7/24/11, FIT, A.K. Tishechkin, (AKTC, CHND, LSAM & MSCC, 9ex.); Orellana, Yasuni NP, Via Maxus at Puente Piraña, 0°39.5'S, 76°26'W, 245 m, flight intercept trap, 20-24.vii.2008, A. K. Tishechkin (AKTC, 1ex.).

Other material.

Brazil: Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), December 2010, FIT, F.Z. Vaz-de-Mello, EXO-00854 (CEMT, 1ex.); French Guiana: Montagne des Chevaux (4.7167, -52.4), 2/23/09-3/8/09, FIT, SEAG, (CHND, 3ex.); Régina, Rés. Natur. des Nouragues, Petit Plateau (4.09, -52.68), 9/16/10, FIT, S. Brûlé, EXO-02946 (DZUP, 1ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 1/25/11, FIT (CHND, 1ex.); Suriname: Sipaliwini, CI-RAP Surv. Camp 1: on Kutari River (-2.1753, -56.7874), 228 m, 8/19/10-8/24/10, FIT, T. Larsen & A.E.Z. Short (SEMC, 1ex.); Sipaliwini, CI-RAP Surv. Camp 4: on lower Kasikasima River (-2.9773, -55.3850), 200 m, 3/20/12-3/25/12, FIT, T. Larsen (AKTC & SEMC, 4ex.).

Diagnostic description.

Length: 1.58-1.59 mm (avg. 1.58 mm); width: 1.26-1.38 mm (avg. 1.32 mm). Body small, elongate oval, convex, rufescent, with ground punctation very fine and inconspicuous; supraorbital stria absent; frons narrow, smooth, depressed at middle, depression barely extending onto epistoma, the latter mostly convex; frontal stria impressed at middle with ends curved dorsad, separate from sides; labrum narrow, produced, subangulate at middle; mandibles lacking basal teeth; prescutellar area depressed, but with impression weakly defined, little larger than scutellum; pronotal disk lacking secondary punctures; median pronotal gland openings small, not distinctly annulate, 3/4 behind anterior margin; marginal pronotal stria complete along sides and front; submarginal pronotal stria complete along the sides, just turning anterior corner, the marginal bead markedly convex; elytron with single, complete epipleural stria; outer subhumeral stria present in apical 1/2 only; inner absent; dorsal stria one abbreviated from apex, obsolete in apical one-third, striae 2-4 complete, but comprising series of weakly connected punctures apically, 4th stria arched to near suture, 5th stria present in apical one-third as series of punctures only, sutural stria a series of punctures in apical 1/2; propygidium only very sparsely punctate; prosternal keel broad, emarginate at base, striae widely separate basally, evenly convergent to meet in anterior arc; prosternal lobe short, rounded, slightly reflexed, with marginal stria rather deeply impressed and slightly removed from edge, especially at sides; mesoventrite produced, with very fine, complete marginal stria, continued at sides by postmesocoxal stria, which ends posterolaterad mesocoxa; mesometaventral stria fine, bluntly angulate at middle, nearly reaching middle of mesoventrite, continued at sides by lateral metaventral stria to middle of metacoxa; metaventrite and 1st abdominal ventrite impunctate; 1st abdominal slender, weakly dentate, with five or six prominent marginal spines; protarsus of both sexes with flattened ventral setae; meso- and metatibiae slender, with few fine marginal spines. Male: basal piece ~ 1/4 length of tegmen; tegmen narrowest near base, widening slightly toward rounded apex, weakly curved and thick in lateral view, medioventral process absent; median lobe ~ 1/3 tegmen length, basal apodemes abruptly narrowed at their midpoints.

Etymology.

This species name refers to its broadly rounded body.

Distribution.

This species is known from three widely scattered localities, Amazonian Ecuador, Mato Grosso, Brazil, and French Guiana.

Remarks.

This species is also quite similar to the above three, but is the most broadly rounded and convex of them. It is also distinguished by its smaller prescutellar impression, non-annulate median pronotal gland openings; lack of lateral pronotal punctures, and frontal stria with the median portion detached from the lateral portions. Despite the disjunct localities occupied by this species, no geographic variation is apparent.

Figures

Map 5. Collecting records for Phelister pretiosus (black circles), P. trigonisternus (black squares) and P. globosus (stars).

Figure 7. A, B Phelister globosus: A dorsal habitus B ventral habitus C, D P. serratus: C dorsal habitus D ventral habitus E, F P. geminus: E dorsal habitus F ventral habitus G, H P. parana: G dorsal habitus H ventral habitus.

Figure 8. Male genitalia A, B Phelister globosus: A aedeagus, dorsal B aedeagus, lateral C, D P. serratus: C aedeagus, dorsal D aedeagus, lateral E, F P. parana: E aedeagus, dorsal F aedeagus, lateral.