Corresponding author: Colin Bergeron (
Academic editor: J. Klimaszewski
Jacobs JM, Bergeron JAC (2017) Addition of a new
The genus
In North America, the genus
The width of the head was measured along the widest part including the eyes. The length was measured along the midline, from the base of the head to the apex of clypeus. These measurements were used to determine the width to length ratio (
Habitus as in Fig.
Dorsal habitus of
Sixth visible sternite with a moderately shallow, obtuse triangular emargination in the middle of apical margin, with a slightly impressed, smooth, narrow triangular area anteriad of the emargination, less than twice the depth of the emargination. Aedeagus with paramere extended to the tip of narrow, sharp median lobe. Paramere slightly narrowed posteriad of base, expanded to maximum width one-third from apex, at which point margins obtusely angle toward narrowed apex (Fig.
Male genitalia of
Length: 5.6–5.8mm.
Type material is deposited in the Strickland Entomological Museum at the University of Alberta (UASM) and at the Canadian National Collection of Insects, Arachnids and Nematodes in Ottawa (CNC). See supplementary table for more information on each specimen.
Paratypes: 7 ♂♂, same labels as holotype but CB0954 // UASM# 212609; CB1555 // UASM# 212608; CB1555 // UASM# 212606; CB0956 // UASM# 212607; CB0955 // UASM# 212611; CB2034 // CNC# 615416; CB2036 // CNC# 615417; and 3 ♂♂ CAN:AB: Slave Lake,
Known specimens were collected from central Alberta, Slave Lake (
The specimens from Dixonville were collected in pitfall traps operating from the second week of May until the last week of June 2003 in old-growth spruce-fir forest. The Slave Lake specimens were collected from a flight intercept trap in May 2003 in a former conifer forest two years following harvesting; regenerating with aspen trees.
The specific epithet is an eponym, a singular Latin noun, genitive case, based on the surname of our mentor and friend, John R. Spence, who has dedicated his career to the study of arthropod biodiversity, particularly ecological and taxonomic aspects of gerrid bugs and carabid beetles, and to community aspect of forest invertebrates. He has mentored many students, putting emphasis on species level identifications, and has greatly influenced the field of entomology in Canada.
21(22) | Paramere with the apex considerably exceeding the apex of median lobe, which is broadly arcuate (Fig. |
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22(21) | Paramere with the apex about even with the apex of median lobe, which is more or less acute (figs 136, 137, |
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22a(22b) | Paramere with margins of apical half obtusely angulate (Fig. |
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22b(22a) | Paramere with margins of apical half broadly rounded (Fig. |
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23(24) | Paramere with the apical part long and spatulate, the narrow and more or less parallel-sided middle part short (Fig. |
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24(23) | Paramere with the apical part short, lancet-like, the narrow and more less parallel-sided middle part long (fig. 137, |
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We thank the following: John R. Spence University of Alberta, for mentorship, support and inspiration; Aleš Smetana, for access to specimens at the CNCI and sharing his knowledge on
Locality table for the holotype and paratype specimens of
occurence