Invreiella acuminata Waldren 2020, sp. nov.
Creators: name: Waldren, George C.
name: Williams, Kevin A.
name: Cambra, Roberto A.
name: Pitts, James P.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Invreiella
Invreiella acuminata

description: 4. Invreiella acuminata Waldren, sp. nov.
(Figs 12, 32, 35, 68, 84, 99, 115, 129; Map 4)
Diagnosis (female). This species is distinguished from other members of the I. cardinalis species-group by the following combination of characters: antennal scrobe carina straight (i.e. fig. 39; fig. 84), antennal rim weakly tuberculate, genal process spinose and curved with posterior genal carina convex (figs 32, 68), with carina anterior to process obscurely crenulate, anterodorsolateral margin of pronotum weakly incurved in dorsal view (figs 35, 99), dorsolateral margin of mesosoma, from pronotal carina to propodeal spiracle, straight in outline in dorsal view (figs 35, 99), width of propodeum scarcely greater than distance between propodeal spiracles in dorsal view (figs 35, 99), mesopleuron with ventral one-third coarsely sculptured, rugose-granulate with weak rugae and few moderate punctures (i.e. fig. 37; fig. 115), and integument of dorsum of head, mesosoma, and T2 dark brown-red (figs 12, 129).
Description (female). Body length 9.27 mm.
Head: Head 1.06 × as wide as mesosoma. Vertex and frons contiguously punctate. Antennal scrobe carina straight, with inner tip of carina separated from antennal rim. Frons not transversely recessed and concave below antennal scrobe carina, antennal rim consequently not recessed and is visible when head viewed laterally. Antennal rim apically glabrous, weakly tuberculate. F1 1.94 × as long as F2. Clypeus concave, with transverse arcuate carina broadly interrupted medially, area merely punctate, resulting in bilateral carinate processes each with enlarged tubercle ventrad to process. Mandible acuminate. Distance from posterior margin of eye to posterolateral corner of head 1.46 × maximum diameter of eye. Genal process spinose and curved, posterior genal carina convex, with carina anterior to process obscurely crenulate. Gena densely punctate laterally, punctures moderately large and nearly contiguous, interpunctal space smooth. Postgena transversely rugose-striate medially.
Mesosoma: Mesosoma 1.36 × as wide as long. Dorsum and posterior face of mesosoma densely, contiguously punctate, surfaces coarse. Anterodorsolateral margin of pronotum weakly incurved in dorsal view. Pronotal carina prominent, glabrous, weakly crenulate, visible both dorsally and laterally, not strongly protruding posteriorly in dorsal view and not entirely obscuring apical portion of pronotal-mesopleural suture. Dorsolateral margin of mesosoma, from pronotal carina to propodeal spiracle, straight in outline in dorsal view; tubercle anterior of propodeal spiracle obscure. Width of propodeum scarcely greater than distance between propodeal spiracles in dorsal view. Lateral face of pronotum rugose-striate, with moderate punctures between rugae, lateral face posteriorly carinate along pronotal-mesopleural suture. Mesopleuron with dorsal two-thirds mostly microgranulate with micropunctures, ventral one-third coarsely sculptured, rugose-granulate with weak rugae, with few moderate punctures. Mesopleuron with vertical column of punctures not tuberculate, not forming anterior and posterior carinae. Mesopleuron posteriorly carinate along ventral three-fourths of mesopleural-metapleural suture, dorsal portion of suture absent. Metapleuron rugose-striate dorsad metacoxa, with few micro- and moderate punctures, remainder of sclerite weakly microgranulate, near glabrous to glabrous. Metapleural-propodeal suture with some overlapping striae at ventral one-third. Lateral face of propodeum posteriorly and with ventral one-third rugose-punctate, with moderate punctures, dorsal two-thirds weakly microgranulate, near glabrous to glabrous. Coxae coarsely sculptured, with small to moderate deep punctures.
Metasoma: T1–5 densely, contiguously punctate, punctures coarse, T2 anteriorly with patch of punctures that are strongly anteriorly tuberculate. Visible portion of pygidial plate not obscured by setal hood rugose-granulate. S2 densely punctate, punctures near contiguous in some areas, 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: Dark brown-red, without integumental maculae on T2.
Pubescence: Frons ventrally with whitish setae. Frons dorsally and vertex mostly covered with decumbent, and some raised, light golden setae. Mandible with dorsal and ventral longitudinal row of light yellow setae. Remainder of head with whitish setae. Dorsum of mesosoma mostly covered with decumbent light golden setae. Pronotum with dorsal transverse patch of dense black setae, except area between epaulet and pronotal spiracle with light golden setae. Remainder of mesosoma including legs with whitish setae (except tarsi with orange bristles). Anterior face of T1 with whitish setae. T1 apically fringed with wide median band of black setae, laterally fringed with whitish setae. T2 with two large circular patches of decumbent light golden setae, patches close but not coalescing, anteriorly and posteriorly surrounded with black setae. Felt line of T2 and surrounding lateral area with whitish setae. T2 apically fringed with wide band of black setae medially, laterally fringed with whitish setae. T3 covered and fringed with whitish setae. T4 similar to T3 except with patch of black setae medioapically. T5 mostly covered and fringed with black setae medially, laterally fringed with whitish setae. T6 with 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 acuminatus in reference to the genal carina ventrally terminating into a pointed process.
Distribution: Mexico.
Biogeography: Unknown.
Host(s): Unknown.
Remarks: This distinctive species is known only from the holotype, which is worn, damaged, and lacks collection data other than “ Mexico.”
Material examined (I. acuminata, 1♀).
Holotype: ♀ (0000056– NHMUK) [pedicel and all flagellomeres of right antenna missing; mesosoma dorsally split due to pin; tarsomere #5 of left proleg missing; entire left mesoleg missing; tibia and tarsus of left metaleg missing; tarsomeres #2–5 of right proleg missing; tarsomere #5 of right mesoleg missing], [label 1 (tan):] Mexico. [// label 2 (tan):] Smith coll. / pres. by / Mrs. Farren White. / 99-303. [// label 3 (tan, red ink):] 52 [// label 4 (tan):] British / Museum. [// label 5 (red):] HOLOTYPE ♀ / Invreiella acuminata / Waldren, 2018 / GCW_HYM0000056 [//label 6 (tan):] Pseudomethoca / cardinalis / (Gerst.) / ♀ Det. C.E. Mickel ‘55. [(MEXICO. Unknown. (1♀ – 0000056– NHMUK))]
description: Published as part of 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, pp. 151-205 in Zootaxa 4894 (2) on pages 175-177, DOI: 10.11646/zootaxa.4894.2.1, http://zenodo.org/record/4315613