Oxyporus bautistae Márquez & Asiain, 2006

Navarrete-Heredia, José Luis & Márquez, Juan, 2015, Description of the male of Oxyporus bautistae Márquez & Asiain (Coleoptera: Staphylinidae, Oxyporinae), Zootaxa 3914 (1), pp. 71-76 : 72

Oxyporus bautistae Márquez & Asiain, 2006

( Figs. 2 & 3 )

Description of the male. Total body length 10.5 mm. Head length 1.85 mm; maximum width 2.3 mm (behind the eyes). Pronotum length 1.6 mm, maximum width 2.2 mm (at upper angles level).

Coloration. Head and pronotum black, except for: maxillary and labial palps, and second to apical antennomeres orange (basal antennomere black); scutellum black, elytra orange with an oblique black spot from almost the posterior quarter of lateral border to near the inner hind corner; prosternum, mesosternum and anterior half of metasternum black, posterior half of metasternum orange; anterior and middle legs with coxae, trochanter and femur black, tibiae and tarsi orange; posterior legs with inner half of coxae, trochanter and femur black, external half of coxae, tibiae and tarsi orange; first three visible abdominal tergites orange, fourth and fifth visible abdominal tergites each with two black spots near to lateral borders (largest in fourth tergite), not touching any borders of each tergite, in addition to two small and longitudinal dark spots on the midline; sixth to last visible tergites orange; all abdominal sternites orange.

Head. Dorsal surface smooth and glossy, with sparse, fine punctures. Eyes 1/3 as long as cephalic length. First antennomere longer than second and third antennomere together, second shorter than third and fourth, third and fourth subequal, antennomeres 5–10 transverse, and antennomeres 5–11 with fine, pale setae distributed laterally, in addition to some dispersed long setae. Labrum orange, bilobed and with dense, fine setae on apex. Mandibles 1.19 times as long as cephalic length; with microsculpture like a mesh; internal margin finely serrated. Ventral surface with microsculpture like a mesh. Post-mandibular ridge visible from the eye to the cephalic ventral area; neck ridge visible before the gular sutures; area between post-mandibular and neck ridges with a moderately long yellow seta.

Thorax. Pronotum transverse, 1.34 times as wide as long, narrowing toward the posterior angles, which are 0.82 times as wide as anterior angles; surface smooth and glossy, with scarce fine punctures; lateral borders without line, anterior and posterior borders with line completely visible; line of posterior border weakly sinuate at middle; all borders with scarce setae; lateral borders with a faint constriction near their middle portion. Elytra with sparse punctation, punctures shallow and slightly wider; each elytron with two sunken lines almost at middle part, with several punctures; internal border of each elytrum with a parallel sunken line. Prosternum and mesosternum smooth; metasternum with some long setae on posterior area, below metacoxae. Tibiae of all legs covered with pale setae, and with fine spines on apical 3/4 of external borders; mesotibiae slightly curved. Tarsi of all legs slightly flattened dorso-ventrally, apical tarsomere largest, as long as previous four tarsomeres together.

Abdomen. Abdominal tergites with microsculpture like a mesh and sparse, fine setae, except the sixth visible tergite with several long and dark setae, in addition to several fine setae. Each tergite with carinate lines. Sternites with microsculpture as on tergites; with long and dark setae, denser laterally and at middle of anterior and posterior borders; the setae also are denser on the last two visible sternites; sixth visible sternite slightly sinuated at posterior border. Genital segment with several long setae and dispersed fine setae on the apical region; genital sternite longer, sinuate at base, with rounded apex, with sparse long setae and some fine setae on apical region ( Fig. 3 A).

Aedeagus. Total length 0.85 mm; apex of median lobe slightly wide; parameres small; base of median lobe arched with respect to its apex in lateral view; internal sac conspicuous, but with very fine microsculpture that is scarcely visible ( Fig. 3 B and C).

Specimen examined. MEXICO: Oaxaca, San José del Pacífico, San Sebastián, 30.V. [19]87 (1 male; CZUG).

Figures

FIGURE 2. Dorsal view of Oxyporus bautistae: A) female (redrawn from Márquez and Asiain, 2006), B) male. Scale bar: 2.0 mm.

FIGURE 3. Oxyporus bautistae: A) Male genital sternite, B) ventral view and C) lateral view of the aedeagus. Scale bar: 0.5 mm.