Skelley, Skelley, 2009

Skelley, Paul E., 2009, Pleasing fungus beetles of the West Indies (Coleoptera: Erotylidae: Erotylinae), Insecta Mundi 2009 (82), pp. 1-94 : 14-15

Genus ANTILLENGIS Skelley , new genus

Type species: Oocyanus brunnipes Kuhnt 1910 , here designated. Diagnosis. Antillengis is recognized by the sexually dimorphic epistome (apically notched in males, entire in females, Fig. 29-30 ), transverse mentum, and broad palpi that rest in a shallow cavity between the mandibles and genal lobes ( Fig. 13 , 31-32 ).

Description. Length 7.5-9.8 mm, width 3.7-4.6 mm. Body robust, elongate, parallel-sided, glossy; dark reddish-brown to nearly black with red-brown appendages and elytral apex.

Head with prominent eyes, facets coarse; ocular striae attaining base of antenna; epistome with apex medially notched in male, entire in female ( Fig. 29-30 ); stridulatory files absent. Antennae relatively stout, attaining basal quarter of pronotum; antennomere II subglobose, length = width; antennomere III length = 2.5 x width, as long as antennomeres IV+V combined; antennomeres IV-VIII moniliform, length = width; antennomeres IX-XI form distinct club; antennomere IX triangular, length = 2.0-2.5 x antennomere VIII, width = 2.0-2.5 x antennomere VIII width; antennomere X transverse, width = 2.5 x width, nearly crescent shape, as wide as antennomere IX; antennomere XI asymmetrical, transversely oblong, width = 2 x length. Mentum broad, plate width = 2.0-2.2 x length, plate triangular or pentagonal with short sides, anterior margin angled or broadly rounded. Gular-submental groove distinct. Mandibles somewhat cupshaped, densely punctate and setose laterally. Genal lobes weakly projecting ventrally, with a patch of setae medially and laterally; large pore present on lateral margin. Genal lobes and mandibles form shallow cavities in which palpi rest. Terminal maxillary palpomere large, triangular, width = 2.0-2.5 x length. Terminal labial palpomere oval, weakly truncate apically, length = 1.5 x width, width = 0.25 x width of maxillary palp. Ventrally, base of head behind eyes coarsely, deeply punctate, puncture size = an ocular facet diameter, separated by less than 0.5 x their diameter; gula glossy, lacking punctures.

Pronotal surface smooth, punctures of two sizes: widely scattered and irregularly placed coarse punctures, puncture size = 0.5-1.0 x ocular facet diameter, interspersed with scattered fine punctures; apical and basal edges with marginal bead only laterally; lateral marginal bead present; pores of anterior and posterior lateral angles on ventral surface, indistinct. Scutellum pentagonal, length = width. Elytron smooth, with scattered coarse strial punctures; strial punctures absent on apical third of elytron. Wings present, fully developed.

Prosternum length = 2 x intercoxal width; base concave; procoxal lines not present at base, convergent anteriorly, continuous or not around coxal cavity, if not continuous, then not extending onto sternal surface; anterior edge with distinct marginal bead, weakly projecting medially; lateral prosternum coarsely, deeply punctate, puncture size and density similar to those on base of head behind eye. Mesosternum transverse; coxal lines short and inwardly arched at apex, coxal line anterior of mesocoxa present only laterally; mesosternum basally truncate, shallowly concave. Metasternum long, distance between meso- and metacoxae = 1.5-1.7 x intermesocoxal width, surface smooth, finely punctate throughout, line continuous around mesocoxal cavity, not extending medially. Meso- and metafemur with posterior margin sharply rounded in cross-section, fine marginal bead present only at apex. Tarsi pseudotetramerous. Abdomen finely punctate medially, becoming coarser laterally and basally; first ventrite with line around metacoxa fine to absent, or evident with row of coarse punctures. Male genitalia with long hair-like flagellum, length = 2 x median lobe length ( Fig. 33 ); flagellum abruptly angled just posterior of swollen base. Female genitalia with prominent, setose styli ( Fig. 34 ).

Figures

Figure 29-34. Antillengis spp. 29-30) Anterior view of head. 29) A. brunnipes, male. 30) A. brunnipes, female. 31- 32) Ventral view of head. 31) A. brunnipes. 32) A. epochthidius. 33-34) A. epochthidius genitalia. 33) Male. 34) Female. Genitalic scale line = 1mm.

Figure 12-17. Key characters. 12-15) Ventral view head and mouthparts. 12) Dacne ducke. 13) Antillengis epochthidius. 14) Notaepytus flavitarsis. 15) Epytus cyaneus. 16-17) Anterior diagonal view of head. 16) Altisessor ater. 17) Notaepytus flavitarsis.