Odontophotopsis odontoloxia Sadler & Pitts,

Wilson, Joseph S., 2017, Nocturnal Velvet Ants (Hymenoptera: Mutillidae) of Joshua Tree National Park, Riverside County, California with the description of three new species, Zootaxa 4319 (2), pp. 329-367: 342-344

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Odontophotopsis odontoloxia Sadler & Pitts

sp. nov.

Odontophotopsis odontoloxia Sadler & Pitts  , sp. nov.

Diagnosis of male. This species can be immediately recognized by the mandibular morphology alone, where the third (dorsal) tooth at the apex of the mandible is dilated dorsally ( Fig. 6View FIGURES 5 – 8). This is a unique mandibular shape for nocturnal mutillids. Also, the prominent mesosternal tubercles ( Fig. 7View FIGURES 5 – 8), the well-developed sternal felt line, the dense plumose setal fringes on the apices of the metasomal segments, and the granulate pygidium ( Fig. 8View FIGURES 5 – 8) that it is defined laterally delimit this species. Genitalia are illustrated in Figs 15 and 16View FIGURES 13 – 18.

Description of male. Coloration ( Fig. 5View FIGURES 5 – 8). Body testaceous; antenna and legs stramineous; ocellular triangle Head ( Fig. 6View FIGURES 5 – 8). Head rounded posteriorly. Mandible ( Fig. 6View FIGURES 5 – 8) tridentate, weakly but broadly excised beneath, excision obtuse, ventral tooth small, angulate; dorsal carina complete terminating at large tooth with angulate dorsal lamella; apex vertical; mandible dilated beyond excision; mandible slightly curving ventrally towards apex. Clypeus ( Fig. 6View FIGURES 5 – 8) depressed below margin of mandible, median area concave; surface of clypeus polished, impunctate, with few erect setae; apex truncate, not bidentate. F1 approximately 0.8 × length of F2. Ocelli ( Figs 5 and 6View FIGURES 5 – 8) moderate in size, ocellocular distance approximately 2 × greatest width of lateral ocellus. Head weakly sculptured with punctures slightly wider than setal bases; interstitial regions glabrous.

Mesosoma ( Fig. 5View FIGURES 5 – 8). Sides and dorsum of pronotum coarsely punctate, dorsum with moderate, shallow punctures, sides with somewhat larger, contiguous punctures. Mesonotum with moderate, contiguous, shallow punctures. Notaulus obsolete on anterior 0.3 of mesonotum. Scutellum coarsely, confluently punctate. Axillae not projecting posteriorly. Dorsum and posterior face of propodeum conspicuously, shallow reticulate, reticulations extending on to sides of propodeum, either remaining reticulate laterally or becoming coarse, punctate-reticulate. Anterolateral area of mesopleuron with moderate, shallow, separated punctures; remainder of mesopleuron with deeper, contiguous to confluent punctures; interstitial areas micropunctate. Metapleuron polished. Mesosternum ( Fig. 7View FIGURES 5 – 8) bidentate, tubercles large, triangular and concave in posterior view; sinus between tubercles U-shaped. Mid and hind coxa edentate. Mid femur not swollen. Marginal cell on costa short, ~1 × length of stigma.

Metasoma ( Fig. 5View FIGURES 5 – 8). First metasomal segment broad, nodose. Pygidium ( Fig. 8View FIGURES 5 – 8) elongate and ovate, distinctly granulate along posterior margin, strongly margined laterally; S2 with felt line, 0.3 × length of tergal felt line. Hypopygidium elongate and ovate; apical margin rounded. Genitalia ( Figs 15 and 16View FIGURES 13 – 18) with paramere acicular; cuspis elongate, approximately 0.5 × free length of paramere, and cylindrical in lateral view, with moderate basal pit.

Length. 10–13 mm.

Female. Unknown.

Material examined. Holotype data, ♂: San Bernardino County: Highway 177, 10.2 km S Highway 62, 33.95861o N 115.24238o W, 240m, 26-27.May.2017, E. & K. Williams ( EMUS)GoogleMaps  . Paratypes: USA, California, Riverside County: Kelso Dunes , 1 ♂, 7.July  . 1972, F. Andrews & E. Kane ( CDFA); Wileys Well , 1 ♂, 6.Oct.1988, T  . Griswold ( EMUS); San Bernardino County: Highway 177, 10.2 km S Highway 62, 33.95861o N 115.24238o W, 240m, 53 ♂, 26-27.May.2017, EGoogleMaps  . & K. Williams ( CDFA, EMUS); Needles , 1 ♂, 30.July  . 1968, J. Lambert ( CDFA); Sheephole Valley Road, 4.5 km N Highway 62, 34.12185o N 115.35918o W, 330m, 1 ♂, 26-27.May.2017, EGoogleMaps  . & K. Williams ( CDFA); Nevada, Clark County, St. Thomas Gap , 1 ♂, 27.Aug.1998, C  . Shultz, O. & S. Messinger (CISC).

Other material examined. USA: California: San Bernardino County: Joshua Tree National Park , Dale Mine , 1 ♂, 25.Jun.2012, F. & J. Cambon ( EMUS)  ; Riverside County, Joshua Tree National Park , Site S 5, ♂, 22- 23.Sep.2012, E. Sadler & K. Weglarz ( EMUS)  .

Distribution. USA (California, and Nevada).

Activity. This species is rare in JTNP and we were unable to assess activity patterns.

Etymology. From the Greek odonto- meaning tooth and the Greek – loxos meaning slanting. Odontoloxia is a common dental term for irregular teeth made in reference to the snaggletoothed appearance of this species’ mandible.

Remarks. This species belongs in the O. parva  species-group due to the head shape, mandibular morphology, bidentate metasternum, metasomal segment 1 being petiolate with segment 2 and being strongly punctate, sternal felt line, and defined granulate pygidium. The mesosternal processes are similar to O. parva  and O. acmaea  , and specimens of this species may be misidentified as O. acmaea  in collections.