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Image of Fontidessus bettae Miller & Montano
Unresolved name

Fontidessus bettae Miller & Montano

Description

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Measurements. TL = 1.4–1.5 mm, GW = 0.9 mm, PW = 0.7 mm, HW = 0.4–0.5 mm, EW = 0.3 mm, TL/GW = 1.7–1.8, HW/EW = 1.5–1.6. Body (Fig. 3) broadly oval; lateral outline nearly continuous between pronotum and elytron; lateral margins of pronotum gently curved; lateral margins of elytron evenly and gently curved. Coloration. Head brown, pronotum dark brown along anterior and posterior margins with prominent yellow transverse region near anterior margin, darker yellow brown medially (Fig. 3); elytron brown with distinct, well-defined, yellow, transverse but slightly oblique macula near base and yellow triangular shaped macula near apex (Fig. 3). Ventral surfaces of thorax and abdomen dark brown to black except prosternum, prosternal process, propleuron and pronotal epipleuron yellow-brown; appendages yellow to yellow-brown. Sculpture and structure. Head with very fine, inconspicuous, irregular punctation, surface between punctures shiny with distinct microsculpture in the form of small cells; eyes medium in size (Fig. 3, HW/EW = 1.5–1.6). Pronotal surface similar to that of head; with posterior angles obtuse; lateral bead narrow, of even width throughout; pronotal striae finely incised, extending nearly 1/2 distance across pronotum (Fig. 3). Elytron with anterolateral angle obtuse, not extended anteriorly (Fig. 3); surface similar to pronotum. Prosternal process moderately broad, lateral margins evenly curved, apex of process narrowly rounded (Fig. 12); metacoxae impunctate, but with distinct microreticulation; metacoxal process with lateral lobe minute. Pro- and mesotarsi relatively narrow in both male and female, but slightly broader in male. Metatrochanter very large in relation to metafemur (Fig. 19). Male genitalia. Median lobe in dorsal aspect broad basally, with lateral margins approximately evenly tapered to extremely slender, bifid apex, with small, but distinctive, hyaline lobes laterally (Fig. 26A); in lateral aspect moderately broad basally, apical portion moderately straight, lateral margins evenly tapered to extremely slender apex (Fig. 26C); with broad, rounded dorsal sclerite (Fig. 26B). Lateral lobe in lateral aspect broad basally, apical segment slender and moderately straight (Figs 26D).
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Kelly B. Miller, Elizabeth T. Montano
bibliographic citation
Miller K, Montano E (2014) Review of the genus Fontidessus Miller & Spangler, 2008 (Coleoptera, Dytiscidae, Hydroporinae, Bidessini) with description of four new species ZooKeys 426: 65–85
author
Kelly B. Miller
author
Elizabeth T. Montano
original
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Distribution

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Fontidessus bettae is known only from the type series in the Gran Sabana of Venezuela (Fig. 31). It was collected from “waterfall seeps”, a hygropetric habitat along the margin of a waterfall (Fig. 35).
license
cc-by-3.0
copyright
Kelly B. Miller, Elizabeth T. Montano
bibliographic citation
Miller K, Montano E (2014) Review of the genus Fontidessus Miller & Spangler, 2008 (Coleoptera, Dytiscidae, Hydroporinae, Bidessini) with description of four new species ZooKeys 426: 65–85
author
Kelly B. Miller
author
Elizabeth T. Montano
original
visit source
partner site
Zookeys