Invreiella breviclypeata Waldren

Waldren, George C., Williams, Kevin A., Cambra, Roberto A. & Pitts, James P., 2020, Systematic revision of the North American velvet ant genus Invreiella Suárez (Hymenoptera: Mutillidae) with description of eleven new species, Zootaxa 4894 (2), pp. 151-205: 187-189

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Invreiella breviclypeata Waldren

sp. nov.

9. Invreiella breviclypeata Waldren   , sp. nov.

( Figs 17 View FIGURES 9–23 , 25 View FIGURES 24–31 , 73 View FIGURES 64–79 , 89 View FIGURES 80–94 , 104 View FIGURES 95–110 , 120 View FIGURES 111–125 , 134 View FIGURES 134–136 ; Map 6)

Diagnosis (female). This species is distinguished from other members of the I. satrapa   species-group by the following combination of characters: clypeus with the apical margin only slightly longer medially than laterally and coming to a shallow apex with the two median tubercles (figs 25, 89), the tubercles being semi-circular in shape in dorsal view and with a distinct gap present between them, genal process triangular (fig. 73), pronotal carina not strongly lobate posteriorly and not projecting away from mesosoma, not obscuring dorsal portion of pronotal-mesopleural suture (figs 104, 120), and apical margin of T2 with wide transverse band of near-black integument mostly covered with black setae (figs 17, 134).

Description (female). Body length 10.41 mm.

Head: Head 1.18 × as wide as mesosoma. Vertex and frons contiguously punctate. Antennal scrobe carina straight, slightly more prominent internally, with inner tip of carina separated from antennal rim. Frons somewhat transversely recessed and concave below antennal scrobe carina, antennal rim consequently slightly recessed and slightly visible when head viewed laterally. Antennal rim apically glabrous, weakly tuberculate. F1 2.10 × as long as F2. Clypeus plate-like and medially flattened, coarsely rugose-granulate, with central cluster of long raised setae, with apical margin only slightly longer medially than laterally and coming to shallow apex, with two close medioapical tubercles that are anterad-projecting, dorsoventrally semi-circular in shape, and with distinct gap present between them. Mandible acuminate. Distance from posterior margin of eye to posterolateral corner of head 1.45 × maximum diameter of eye. Genal process triangular, posterior genal carina weakly sinuate. Gena densely, nearly contiguously punctate laterally, interpunctal space smooth. Postgena transversely rugose-striate.

Mesosoma: Mesosoma 1.28 × as wide as long. Dorsum and posterior face of mesosoma densely, contiguously punctate, surfaces coarse. Anterodorsolateral margin of pronotum outcurved. Pronotal carina prominent, glabrous, visible both dorsally and laterally, not strongly lobate posteriorly and not projecting away from mesosoma, not obscuring dorsal portion of pronotal-mesopleural suture. Tubercle anterior of propodeal spiracle present. Width of propodeum greater than distance between propodeal spiracles in dorsal view. Lateral face of pronotum rugose-striate, with moderate punctures between striae, lateral face posteriorly carinate along pronotal-mesopleural suture. Mesopleuron anteriorly microgranulate to granulate, with few punctures, posteriorly with ventral one-fourth of sclerite striate-rugose. Mesopleuron with vertical column of punctures weakly tuberculate, not forming anterior or posterior carinae. Mesopleuron posteriorly carinate along ventral half of mesopleural-metapleural suture, dorsal portion of suture obscure, faintly present. Metapleuron with ventral one-third striate-rugose, dorsal two-thirds mostly glabrous. Metapleural-propodeal suture with striae perpendicularly overlapping suture along ventral half.

Lateral face of propodeum posteriorly with ventral half striate-rugose, anteriorly with dorsal half mostly glabrous, with few microstriae. Coxae coarsely sculptured, with small to large, deep punctures.

Metasoma: T1–5 densely, contiguously punctate. Visible portion of pygidial plate not obscured by setal hood rugose-granulate. S2 densely punctate, punctures large, interpunctal space smooth, basolateral concave area sparsely punctate, nearly glabrous between punctures. S3–6 densely punctate, coarsely microgranulate between punctures. Hypopygium with slightly arcuate, transverse row of setae near apical margin, lateral setae longer than median setae.

Integument coloration: Orange, except the following ranging from dark red-brown to black: antenna, antennal rim, apical one-third and basal one-fourth of mandible, legs including coxae and trochanters, T1 and S1, apical margin of T2 and S2 transversely, and T3–6 and S3–6 entirely.

Pubescence: Frons ventrally with few whitish setae. Frons dorsally, vertex, and posterolateral corner of head covered with mostly decumbent orange-red setae, posterolateral corner with few scattered raised fuscous setae. Mandible with dorsal and ventral longitudinal row of light orange setae. Remainder of head with whitish setae. Dorsum of mesosoma mostly covered with decumbent orange-red setae, dorsal edges (except pronotum) with sparse raised fuscous setae, particularly at top of posterior face of propodeum. Pronotum without black setae, rather with orange setae. Remainder of mesosoma including legs with whitish setae (except tarsi with dense orange bristles). Anterior face of T1 with whitish setae. T1 apically fringed with wide band of black setae medially, laterally fringed with whitish setae. Dorsum of T2 mostly covered with orange setae. Felt line of T2 and surrounding lateral area with whitish setae. T2 apically fringed with wide band of black setae medially, coming to median point, laterally fringed with whitish setae. T3–5 mostly covered and apically fringed with whitish setae, with few scattered dark raised setae and apical fringe with median patch of black setae, these patches becoming sequentially wider from T3–5. T6 with dark yellow-orange setae surrounding pygidial plate, partially obscuring basal half. Remainder of metasoma with whitish setae.

MALE. Unknown.

Etymology: The specific epithet is derived from the Latin brevis and clypeus in reference to the shortened clypeus which helps distinguish it from I. chihuahuensis   and I. satrapa   .

Distribution: Mexico (Sinaloa).

Biogeography: Mexican transition zone (Sierra Madre Occidental province).

Host(s): Unknown.

Remarks: This species is known only from the holotype.

Material examined ( I. breviclypeata   , 1♀).

Holotype: ♀ (0000003– DGMC) [F9 and F10 of right antenna missing; tarsomere #5 of right metaleg missing], [label 1 (white):] MEX:Sinaloa, / 5 mi W El / Palmito 6000’ / x-13-1975 [// label 2 (white):] J Powell / J Chem-sak / T Eichlin & / T. Friedlander [// label 3 (red):] HOLOTYPE ♀ / Invreiella breviclypeata / Waldren , 2018 / GCW_ HYM0000003 [// label 4 (white):] Mutillidae   : / Pseudomethoca   sp. ♀ / det. D.G. Manley 20 03. [( MEXICO: Sinaloa: El Palmito , 5 mi. W, [23.562°N 105.916°W], 6000 ft., 13.Oct.1975, J. Powell, J. Chemsak, T. Eichlin, & T. Friedlander (1♀ –0000003– DGMC))] GoogleMaps