Pantomorus albosignatus Boheman in Schoenherr 1840
Creators: name: Lanteri, Analia A.
name: Rio, Maria Guadalupe Del
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Pantomorus
Pantomorus albosignatus

description: Pantomorus albosignatus species group
(Habitus Figs. 1–14; genitalia Figs. 15–26; map of distribution Fig. 27)
Diagnosis. Species relatively small (females 5.5–8.3 mm; males 5.0– 7.9 mm), covered with dense scaly vestiture that forms a characteristic maculation of three pairs of white maculae on grey or brown background (P. albosignatus and P. andersoni) or dark- brown maculae on a pale background (P. parvulus and P. crinitus), almost effaced in some specimens (particularly P. crinitus). Rostrum lacking lateral carinae or feebly carinate; scape not reaching hind margin of eyes; elytra short (LE/WE 1.25-1.45), convex, lacking humeri or with vestigial humeri, densely covered with erect to suberect setae; profemora equal to or slightly broader than metafemora; mucro small, only present on protibia, except in some males; penis body equal to or slightly shorter than the apodemes.
Description. Species relatively small for the tribe Naupactini (females 5.5–8.3 mm; males 5.0– 7.9 mm), covered by brown or grey scaly vestiture, with characteristic pattern of maculations on pronotum and elytra (Figs. 1–8, 11, 14); some specimens uniformly grey or greenish (Figs. 9–10, 12–13). Vestiture consisting of appressed round scales and fine, erect to suberect setae, distributed in 1–4 irregular lines along intervals of elytra; scaly vestiture scattered on legs, lacking on antennae and central line of abdomen.
Rostrum truncate conical (WF/WR 1.35–1.55× in female, 1.20–1.50× in males), about as long as wide at apex (LR/WR 0.95–1.05× in females; 1.00–1.15× in males); lateral carinae indistinct. Eyes round, feebly to strongly protruding; preocular impression usually indistinct; postocular constriction slight. Antennae short; scape not reaching hind margin of eyes; funicle segment 2, 1.0–2.0× as long as segment 1; funicle segments 3–7, usually 2.0–2.5× as long as wide at apex; club 1.9–2.6× as long as wide.
Pronotum subcylindrical or slightly truncate-conical; feebly to strongly punctate; base straight to slightly curved (WP/LP 1.30–1.35× in female, 1.25–1.55× in male). Elytra oval, very short, broader relative to pronotum in females (LE/WE 1.25–1.45×; LE/LP 2.25–2.60×; WE/WP 1.35–1.55×), narrower and longer in males (LE/WE 1.30–1.45×; LE/LP 2.05–2.30×; WE/WP 1.15–1.30×); base usually straight and thickened; humeri usually absent; apical declivity usually abrupt (Figs. 7–8); punctures of striae of variable size; intervals flat, about 2–3× as wide as punctures. Metathoracic wings absent. Scutellum small, denuded or setose at apex. Legs short; profemora equal to or slightly wider than metafemora in females (PF/MF 1.00–1.20×), usually wider in males (F1/F3 1.10–1.45×); protibiae bearing small mucro and 7–9 denticles on inner margin; meso- and metatibiae lacking mucro and denticles (with small mucro in males of P. andersoni); corbel of metatibia well-developed, squamose; dorsal comb about as long as distal comb. Ventrite 2 slightly longer than ventrites 3+4; ventrite 5 about same length as 3+ 4 in females and slightly longer in males.
Female terminalia (Figs. 15–20). Sternite VIII (Fig. 15) subrhomboidal, about as long as wide, with pair of subparallel more sclerotized lines along basal half; apodeme about 3.0-3.5× as long as plate. Ovipositor (Fig. 16) slightly shorter than ventrites 1-5. Spermathecae (Figs. 17–20) subcylindrical; collum truncate-conical; ramus indistinct; cornu shorter than spermathecal body. Spermathecal gland about 2× as long as spermatheca; spermathecal duct about 4–6× as long as spermatheca.
Male genitalia (Figs. 21–25). Penis about as long as ventrites 1-5; penis body strongly curved, equal to slightly shorter than its apodemes, with semicircular ostium; apex tapered (Fig. 25). Endophallus usually without sclerites.
Species included: Pantomorus albosignatus (Figs. 1, 4, 7), P. parvulus (Figs. 2, 5), P. andersoni sp. nov. (Figs. 3, 6, 8) and P. crinitus (Figs. 9–14).
description: Published as part of Lanteri, Analia A. & Rio, Maria Guadalupe Del, 2020, Revision of the Pantomorus albosignatus species group (Coleoptera: Curculionidae Entiminae) from Mexico and Central America, pp. 557-570 in Zootaxa 4819 (3) on pages 558-559, DOI: 10.11646/zootaxa.4819.3.7, http://zenodo.org/record/4397142