Phlaeopterus longipennis ( Casey, 1885 ) Mullen & Campbell & Sikes, 2018

Mullen, Logan J., Campbell, J. M. & Sikes, Derek S., 2018, Taxonomic Revision of the Rove Beetle Genus Phlaeopterus Motschulsky, 1853 (Coleoptera: Staphylinidae: Omaliinae: Anthophagini), The Coleopterists Bulletin 72, pp. 1-1 : 1-

14. Phlaeopterus longipennis ( Casey, 1885) , new combination

(Figs. 4B, 12B, 15G, 20A, 21C, 32C, 36C, 42E)

Vellica longipennis Casey 1885: 321 [original description]. Casey 1893: 401; Moore 1966: 52; Moore and Legner 1979: 199; Campbell and Davies 1991: 5; Herman 2001: 376; Newton et al. 2001: 341; Bousquet et al. 2013: 89. (or ALLOTYPE ♀), Phlaeopterus loganensis, 1951 –M.H. Hatch. Both specimens are deposited in the USNM.

Distribution. Phlaeopterus loganensis is known only from the Rocky Mountains of Idaho, Montana, and British Columbia, the Selkirk Mountains of British Columbia, and Banff and Jasper National Parks, Alberta ( Fig. 12A ).

Type Locality. Placer County, California, USA .

Redescription. Habitus: Length 2.7–3.6 mm. Light brown to dark brown, legs and antennae sometimes lighter (Fig. 4B). Head: Width across eyes to head length slightly wider than long. Interantennal groove absent. Anteocellar foveae moderately large, deeply impressed. Eyes moderately pubescent on ventral half, with more than 10 setae ( Fig. 36C ). Antennomeres 3–10 each 1.3–1.9 times longer than wide, antennomeres 4–11 each with many sensory pits with groups of pore-like openings. Ocelli absent. Nuchal constriction vague. Mandibular molar area with L-shaped row of setae. Maxillary palpus as in Fig. 32C . Labrum with sensory pores along anterior margin only. Labial palpi with 3 rd palpomere 1.4–1.8 times longer than palpomere 2. Gula as in Fig. 42E . Thorax: Pronotum narrow ( Fig. 15G ), length to width ratio = 0.79–0.87; ratio of pronotal width to head width = 1.11–1.33; maximum width slightly narrower than elytra at base; punctures separated by average distance subequal to or slightly greater than diameter of a puncture; lateral margins very narrowly explanate just posterad lateral fovea, otherwise not at all explanate anterad or posterad lateral foveae. Foveae broad, moderately deeply impressed, narrowly separated from undescribed, D) Unamis sp. ,

Phlaeopterus smetanai .

obsoletus , H) E) Phlaeopterus lagrandeuri , F) Phlaeopterus houkae , G) Phlaeopterus sac small, narrowly elongate; with patch of large microspinules.

Type Specimens. Lectotype male (here designated to clarify the application of this name to this taxon) labeled as follows: Oct./Placer Co., CAL./ TYPE USNM 48113/ Vellica longipennis Cas. / LECTOTYPE ³ Vellica longipennis Csy. , desig. 1984, J.M. Campbell. The Casey collection also contains six paralectotypes, all labeled “Siskiyou Co., Cal.” All specimens are deposited in the USNM.

Distribution. Phlaeopterus longipennis is known from northern California in the Sierra Nevada, Cascade, and Trinity Mountains, through Oregon to Mt. Rainier National Park, Washington ( Fig. 12B ).

Bionomics. Adults have been collected at 500–3,000 m elevation during May–August in wet moss at the edges of cold streams.

Remarks. Phlaeopterus longipennis can be differentiated from all other Phlaeopterus species except P. obsoletus by its absence of ocelli. Phlaeopterus longipennis is externally similar to P. obsoletus , but it differs significantly in aedeagal characters and can be externally differentiated by the punctation of the head and pronotum, its slightly shorter elytra, and its smaller overall size. Casey (1885) stated that Vellica belongs between Lesteva and Phlaeopterus , and compared Vellica to Lesteva , noting that the two genera differ in the structure of the maxillary and labial palpi and the length of the elytra. However, Casey (1885) did not make any morphological comparisons between Phlaeopterus and Vellica . Phlaeopterus longipennis matches the diagnosis of the genus Phlaeopterus given herein and so is moved from the monotypic genus Vellica , thus making Vellica a synonym under Phlaeopterus . This transfer was also suggested by Newton et al. (2000). lateral margins. Elytra with humeral angles convex; epipleural carina not projecting; 2.2–2.4 times longer than pronotum; apical margins convex. Wings developed or brachypterous. Mesosternum with projecting tooth; longitudinal carina along midline of mesosternum present, becoming vague near posterior margin ( Fig. 20A ). Abdomen: Tergites IV and V each with wing-folding spicules very broad, nearly contiguous or contiguous in shape of single transverse band. Apical palisade fringe on tergite VII absent. Legs: All tibiae evenly pubescent to apex. Metatrochanter without tooth on apical margin. Aedeagus: Length 0.68–0.78 mm. Median lobe narrowly triangular. Parameres narrow; diverging near base then parallel ( Fig. 21C ). Internal

Figures

Fig. 12. Distributions of Phlaeopterus species based on all georeferenced specimen records. A) P. loganensis, B) P. longipennis. Grey dots represent localities where at least one Phlaeopterus species, but not the species of interest, was collected. Red dots represent localities where the species of interest was collected.

Fig. 36. Phlaeopterus species, eyes, dorsal view. A) P. lagrandeuri, B) P. houkae, C) P. longipennis, D) P. frosti, E) P. bakerensis, F) P. olympicus.

Fig. 32. Maxillary palpi of A) Lesteva pallipes, B) Unamis sp. undescribed, C) Phlaeopterus longipennis, D) Phlaeopterus bakerensis. Labial palpi of E) Unamis sp., F) Phlaeopterus cavicollis.

Fig. 42. Heads, ventral view, of A) Unamis sp. undescribed, B) Unamis sp., C) Phlaeopterus lagrandeuri, D) Phlaeopterus houkae, E) Phlaeopterus longipennis, F) Phlaeopterus elongatus.

Fig. 15. Pronota, dorsal view, of A) Lesteva pallipes LeConte, 1863, B) Lesteva longoelytrata (Goeze, 1777), C) Unamis sp. undescribed, D) Unamis sp., E) Phlaeopterus lagrandeuri, F) Phlaeopterus houkae, G) Phlaeopterus longipennis, H) Phlaeopterus obsoletus.

Fig. 20. Phlaeopterus species, mesosterna, ventral oblique view. A) P. longipennis, B) P. obsoletus, C) P. olympicus, D) P. frosti, E) P. occidentalis, F) P. elongatus.

Fig. 21. Phlaeopterus species, aedeagi (left = ventral view; right = dorsal view of median lobe). A) P.