Corresponding author: Yves Bousquet (
Academic editor: Terry Erwin
The holdings of the following collections were studied: Buffalo Museum of Science, New York (BMSC), California Academy of Sciences (CAS), National Collection of Insects, Arachnids and Nematodes (CNC), Field Museum of Natural History, Chicago (FMNH), Los Angeles County Museum of Natural History (LACM), Museum of Comparative Zoology (MCZ), Michigan State University Collection (MSUC), North Dakota State University (NDSU), National Museum of Natural History (USNM), University of Wisconsin-Madison Insect Research Collection (WIRC), and the collection of Peter W. Messer (PWM). No examples of
Lectotype (♂), designated by
Habitus (dorsal view) of
. Coloration. Clypeus and labrum reddish; frons reddish-brown to reddish-black; antennomeres 1 and 2 yellow, antennomeres 3–11 slightly darker, brownish-yellow; pronotum entirely yellow to reddish-yellow; elytra reddish-brown to reddish-black, with base, intervals 1 and lateral margins paler, more or less yellowish to reddish; elytral epipleura yellow; legs entirely yellow. Microsculpture. Frons with isodiametric meshes, meshes indistinct or almost so in the male, faint but distinct in the female; pronotum with linear microlines, microlines indistinct or almost so in the male, distinct in the female; elytra with markedly transverse meshes, meshes well impressed in both sexes. Head. Clypeo-ocular line evident, complete (i.e., reaching medial edge of eye). Pronotum. Proportionally wide, LP/WP = 0.73–0.79 (mean = 0.76; n= 10); maximum width clearly anterior to middle; anterior angle markedly protruding; basal impression shallow, almost indistinct in some specimens; basal bead reaching just beyond level of basal impression. Elytra. Striae impressed, shallow but deeper toward apex, impunctate; intervals flat. Thorax (ventral side). Metasternum, short, length behind mesocoxa about 0.7 that of metacoxa along same line. Male genitalia. Median lobe with apex hooked; internal sac with two large U-shaped sclerotized structures and a small “scaly body” near middle.
Apparent body length: 3.5–4.1 mm.
Median lobe of aedeagus of
This species ranges from east-central Vermont to southeastern North Dakota, southwardly to northeastern Kansas, Tennessee, and northeastern Virginia (
Collection localities for
No information is available about the habitat requirements of the species.
Nine specimens were dissected and their wings were reduced to tiny stubs. Considering the size of the metasternum, the species is very likely constantly brachypterous.
Adults of
Adults of
Adults of
Adults of
1. | Metasternum short, ratio of metasternal length behind mesocoxa and metacoxal length measured along the same line about 0.7 | |
– | Metasternum longer, ratio of metasternal length behind mesocoxa and metacoxal length measured along the same line 1.0 to 1.2 | 2 |
2. | Pronotum paler, reddish (in some specimens with a darkened central cloud), paler than head. Apex of median lobe not hooked | |
– | Pronotum darker, reddish-brown to piceous (except narrowly around edges), not clearly paler than head. Apex of median lobe hooked | 3 |
3. | Pronotum and elytra without microsculpture | |
– | Pronotum and elytra with well-impressed microsculpture meshes |
We thank Terry L. Erwin for making the type material of