Borboropora pseudoquadriceps Delgado & Santiago-Jiménez, 2009

Delgado, Leonardo & Santiago-Jiménez, Quiyari J., 2009, Two new species of Borboropora Kraatz from Mexico (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 2094, pp. 60-68 : 61-64

Borboropora pseudoquadriceps Delgado & Santiago-Jiménez , new species

( Figs. 1–10 )

Type material. Holotype: male, “ MÉXICO: Veracruz, Córdoba, Cerro Matlaquiahuitz, 6.VIII.2006, bosque mesófilo de montaña perturbado, Alt. 1571 m / 18° 59’ 41” N, 96° 53’ 35” W, trampa de luz, J. Asiain, J. Márquez, L. Delgado y Q. Santiago cols. ( IEXA). Paratypes (59 specimens) same data as holotype. ( CC- UAEH, CZUG, FMNH, IBUNAM, KSEM, QSJC and IEXA).

Description. Body length: 3.7– 2.9 mm. Body fusiform, depressed; head, pronotum and abdomen glossy and black, elytra, coxae and femora reddish-brown, tibiae and tarsi yellowish, antennae with articles 1–2 brown, articles 3–11 black except by apical half of article 11 yellowish brown; surface typically smooth and glossy, without evident microsculpture on head, pronotum and elytra.

Head transverse ( Fig. 1 ), wider than long, basal angles broadly rounded; with minute to small setiferous punctures moderately dense; some specimens with small impression on frons, beginning between antennal insertions and extended on disc of head but not reaching the base of neck. Eyes of moderate size, longer than length of temples. Neck about 1/5 as wide as the base of head. Antenna with articles 1–3 and 11 elongate, and articles 4–10 quadrate.

Labrum with 10 or fewer setae on each side of midline, most setae on anterior half; with 10 to 25 sensory pores on each side of midline. Basal region of epipharynx with 7 to 9 pores on each side of midline arranged in nearly diagonal rows, and with a medial transverse row of 8 to 10 sensory pores; medial pore field of epipharynx with about 30 pores in an irregular array. Mandibles almost symmetrical, with velvety patch area restricted to basal angle; right mandible with one medial acute tooth ( Fig. 2 ), left mandible with one obtuse tooth. Prementum with two medial setae, separated by about two times width of setal base; medial pseudopore field present; lateral pseudopore field composed for one setose pore and two asetose pores. Mentum not reticulated.

Pronotum subquadrate ( Fig. 3 ), with minute and small dense punctures on disc; distinctly narrowed behind middle, broadest in anterior region; anterior angles rounded; posterior angles right, with distinct sharp corner. Pronotum with a medial longitudinal sulcus, and with a small impression at base of midline. Pronotal surface with dense microsetae and some macrosetae, lateral microsetae directed inward, microsetae on midline directed outward. Mesospiracular peritremes large, ovoid ( Fig. 4 ). Each elytron longer than wide ( Fig. 5 ); with minute simple punctures and minutely tuberculate punctures, not reticulated; with sparse, recumbent microsetae; postero-lateral margin of elytra slightly to moderately sinuate. Mesoventrite without medial carina ( Fig. 6 ); each mesocoxal acetabula with two pores. Mesocoxal cavities narrowly separated by meso and metaventral processes; length of mesoventral process about 0.30 mm (from border of declivity of mesoventrite to apex of process), with apex long and rounded; length of metasternal process about 0.56 mm (from base of metaventrite to apex of mesoventral process), metaventral process not margined and continued below mesoventral process ( Fig. 6 ); isthmus lacking.

Abdomen fusiform, glossy, with microsetae more or less dense and macrosetae sparse. Sternite IV in basal region without gland opening. Tergite VII with gland openning on anterior margin and ctenidio on apical margin. Tergite VIII rounded, convex, with comb of denticles (about 29) on apical margin. Without evident secondary sexual dimorphism.

Aedeagus with internal sac of medial lobe with many spinules ( Figs. 7–8 ); medial lobe with short, well defined compressor plate; flagellum distinct but short; anterodorsal margin of paramerite with two irregular rows of sensory pores presents beneath the velar sac; hinge zone of paramerite faint, extended from dorsal surface to near articulation between condylite and paramerite; apical process of paramerite clearly articulated anterior to posterior edge of velum; condylite with an irregular line of sensory pores; velum long (more than half as long as paramere)( Fig. 9 ).

Spermatheca with basal bulb simple, rounded at base ( Fig. 10 ); tube with two distinct curves, but not arranged into distinct coils, not looking filamentous; neck short and very sclerotized.

Remarks. Borboropora pseudoquadriceps can be distinguished from B. quadriceps and B. sulcifrons by the following characters: eyes longer than length of temples (not shorter), punctures of head minute and small (not coarse), right mandible with one median tooth (not with two median teeth). In addition, B. pseudoquadriceps has body length greater than 2.0 mm, similar to B. quadriceps but not B. sulcifrons (under 1.4 mm). For comparison with B. mixe see remarks below.

Distribution. Borboropora pseudoquadriceps is only known from the type locality in the central region of the Veracruz state, Mẻxico. This locality is situated at 1,570 m above sea level, at a disturbed cloud forest. The adult specimens were collected with mercurial vapor light traps. The larval habitat is not known.

Etymology. The specific epithet is derived from the name quadriceps combined with the prefix pseudoreferring to similarity with the North American species Borboropora quadriceps .

Figures

FIGURES 1 – 6. Details of Borboropora pseudoquadriceps sp. nov. 1) Head, dorsal view. 2) Right mandible, dorsal view. 3) Pronotum, dorsal view. 4) Prosternum and peritremes, ventral view. 5) Elytra, dorsal view. 6) Meso- and metaventrite, ventral view.

FIGURES 7 – 10. Genitalia of Borboropora pseudoquadriceps sp. nov. 7) Median lobe, lateral view. 8) Median lobe, dorsal view. 9) Paramere, lateral view. 10) Spermatheca. Scale bar 0.2 mm.