Glyptomini, Moreno, Carlos, Newton, Alfred F. & Casari, Sônia A., 2025

Moreno, Carlos, Newton, Alfred F. & Casari, Sônia A., 2025, The larval description of Glyptoma denieri (Bernhauer) from Brazil provides clarification on new status of the subtribe Glyptomina (Coleoptera, Staphylinidae, Osoriinae), Zootaxa 5620 (2), pp. 295-314 : 311-312

Glyptomini stat. nov.

(as tribe of Osoriinae , not subtribe of Thoracophorini )

Diagnosis:

Adult: Mandibles ( Fig. 3A ) without glandular invagination near middle of ventral side. Gular sutures absent medially, present only at ventral base of head as a semicircular suture ( Fig. 7B ). Protibia without external spines or teeth ( Fig. 4A ). Abdominal sternite VIII ( Figs. 5 C-D, 6A-B). Ovipositor present as a pair of 3-segmented appendages (proximal and distal gonocoxites, stylus) ( Fig. 6D , 14B ) or 2-segmented appendages (gonocoxites only, stylus absent).

Larva: Stemmata absent. Mandibles very short and robust, less than one-third as long as head width, more or less asymmetrical, the left mandible deeply excavate near apex ( Figs. 10 D-F), the right mandible similar or with reduced excavation or even a protrusion near apex, both mandibles with multiple subapical teeth and grooves. Urogomphus ( Figs. 13A , E-F) bulbous, with rounded apex bearing a tympaniform sensillum, and a deep internal invagination near inner base.

Genera (species) included: Nine genera (97 species), as follows: Arborilispinus Irmler (2 species), Espeson Schaufuss (23 species), Geomitopsis Scheerpeltz (22 species), Glyptoma Erichson (22 species), Lispinodes Sharp (10 pecies), † Lispinomimus Irmler (1 species), Parespeson Bernhauer (3 species), Pseudespeson Lecoq (13 species), Synaenictus Patrizi (1 species). †Extinct taxon in Dominican amber. Full details in Newton (2025, as Glyptomina ).

Figures

FIGURE 3. Glyptoma denieri (Bernhauer). Adult. A, mandible dorsal (left, right); B, molar area; C, apex of labium (dorsal); D, mentum; E, maxilla (ventral); F, apex of maxilla; G, labrum; H, prothorax (ventral); I, meso- and metaventrite; J, scutellum, meso- and metanotum; K, elytron (dorsal, ventral).

FIGURE 4. Glyptoma denieri (Bernhauer). Adult tarsi. A, front tarsi; B, middle tarsi; C, hind tarsi. ts = tibial spur.

FIGURE 5. Glyptoma denieri (Bernhauer). Adult A–B, tergite VIII (male, female); C–D, sternite VIII (male, female); E, segments IX–X of male (dorsal); F, apices and bristles of tergites IX–X and sternite IX of male; G, tergites IX–X and ovipositor; H, bristles of tergite X of female; I, ovipositor (dorsolateral); J–K, aedeagus (lateral, dorsal); L, spermatheca.

FIGURE 6. Glyptoma denieri (Bernhauer). Illustrative schemes. Chaetotaxy of sternite VIII (A, male; B, female); segments IX–X of male (C), and female (D). SIX = sternite IX; TIX = tergite IX; TX = tergite X; Ovp = ovipositor.

FIGURE 7. Scanning electron microscopy of Glyptoma denieri (Bernhauer). A, head (ventral); B, detail of the basal area of head (ventral); C, mentum-submentum; D, neck; E, pronotum; F, right elytron (dorsal).

FIGURE 10. Glyptoma denieri (Bernhauer), illustrative schemes of the larva.A, labrum and frons (dorsal view); B, epipharynx; C, hypopharynx; D, left mandible (dorsal); E, left mandible (dorsolateral); F, left mandible (ventral). Scale bars = 0.05 mm (B–F); 0.1 mm (A).

FIGURE 13. Glyptoma denieri (Bernhauer), illustrative schemes of the larva. A, abdominal segments VIII–X (dorsal); B, segments IX–X (ventral); C, segment X extroverted; D, abdominal spiracle; E, urogomphi (dorsal); F, urogomphi (ventral). Scale bars = 0.05 mm (C–D); 0.1 mm (A– B, E–F).

FIGURE 14. Female, 3-segmented ovipositor: A, Glyptoma denieri (Bernhauer); B, Geomitopsis sp.