Invreiella bimaculata Waldren, 2020

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 : 172-173

2. Invreiella bimaculata Waldren , sp. nov.

( Figs 10 , 51, 53 , 66 , 82 , 97 , 113 , 127 ; Map 3)

Diagnosis (female). This species is distinguished from other members of the I. australis species-group by the following combination of characters: antennal scrobe carina arcuate (i.e. fig. 45; fig. 82), genal process denticulate with posterior genal carina straight (figs 51, 66), lateral face of pronotum with moderate punctures throughout except bare spot posteriorly (figs 53, 113), integument of head dark brown-red, without patches of black integument (figs 10, 66, 127), and T2 with two yellow integumental spots that are close but not coalescing, with the remaining dorsal integument of T2 dark brown-red (figs 10, 127).

Description (female). Body length 9.27 mm.

Head: Head 1.27 × as wide as mesosoma. Vertex and frons contiguously punctate. Antennal scrobe carina strongly arcuate, with inner tip of carina close to 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 microgranulate, tuberculate and protruding. F1 1.80 × as long as F2. Clypeus concave, with transverse arcuate carina complete, with small lateral tubercle ventrad to carina. Mandible acuminate. Distance from posterior margin of eye to posterolateral corner of head 1.27 × maximum diameter of eye. Genal process denticulate, posterior genal carina straight. Gena densely punctate laterally, punctures contiguous, interpunctal space smooth. Postgena transversely rugose-striate, with punctures between striae.

Mesosoma: Mesosoma 1.15 × as wide as long. Dorsum and posterior face of mesosoma densely, contiguously punctate, surfaces coarse. Anterodorsolateral margin of pronotum outcurved. Pronotal carina prominent, glabrous, crenulate due to overlapping lateral punctures, visible both dorsally and laterally, not strongly protruding posteriorly in dorsal view and not entirely obscuring apical 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 with large, close to separated punctures throughout, except for bare spot posteriorly, interpunctal space microgranulate, lateral face posteriorly carinate along pronotal-mesopleural suture. Mesopleuron mostly mi- crogranulate with micropunctures. Mesopleuron with vertical column of punctures weakly tuberculate, not forming anterior or posterior carinae. Mesopleuron posteriorly carinate along ventral half of mesopleural-metapleural suture, carina diverging from suture roughly at midpoint and terminating shortly after, dorsal portion of suture obscure, faintly present. Metapleuron weakly rugose-striate just dorsad metacoxa, with few moderate punctures, medially with micropunctures, dorsal portion glabrous. Metapleural-propodeal suture without overlapping striae. Lateral face of propodeum mostly glabrous, patchily microgranulate, with clusters of micropunctures, posteriorly with moderate scattered punctures. Coxae coarsely sculptured, with small to moderate punctures.

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

Integument coloration: Mostly dull red-orange, with two close yellow maculae on T2 that are separate and not coalescing, remaining dark brown-red to black: antennal rim, antenna, apical third of mandible, apices of femora, apices of metatibia, metatarsus, anterior and posterior third of T2, T3–6, pygidial plate, and apical portion of hypopygium.

Pubescence: Frons ventrally with whitish setae, medially with fuscous setae. Frons dorsally and vertex with mostly decumbent orange setae, with scattered fuscous setae. Posterolateral corner of head with triangular patch of black setae. Mandible with dorsal and ventral longitudinal row of pale orange setae. Remainder of head with whitish setae. Dorsum of mesosoma mostly covered with decumbent orange setae, dorsolateral edges with sparse raised fuscous setae. Pronotum with dorsal transverse band of black setae, except area between epaulet and pronotal spiracle with whitish setae. Median patch of sparse black setae present on dorsum of propodeum, extending longitudinally nearly halfway up mesosoma. 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 moderately wide band of black setae medially, laterally fringed with whitish setae. T2 with light yellow-orange setae overlapping two yellow-orange maculae, remainder of dorsum of T2 with black setae surrounding maculae. 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 small patch of black setae medially. T5 mostly covered and fringed with black setae medially, laterally fringed with whitish setae. T6 with light 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 bi - and macula in reference to the two yellow integumental spots on T2.

Distribution: Mexico (Sinaloa).

Biogeography: Neotropical region (Pacific Lowlands province).

Host(s): Unknown.

Remarks: This species is known only from the holotype.

Material examined ( I. bimaculata , 1♀).

Holotype: ♀ (0000002– UNAM) [metasoma glued onto specimen], [label 1 (white):] MEXICO: Sinaloa / Mi- croondas El Indio / 28-VII-1995 Alt. 350 m / 23°39’32” N 106°33’44” O / Col. R. Ayala [// label 2 (red):] HOLO- TYPE ♀ / Invreiella bimaculata / Waldren, 2018 / GCW_HYM0000002. [( MEXICO: Sinaloa: Microondas El Indio, 23.658889°N 106.562222°W, 350 m, 28.Jul.1995, R. Ayala (1♀ –0000002– UNAM))]

Figures

FIGURES 9–23. Female habitus, dorsal view. Scale bars = 2 mm.

FIGURES 41–54. Female pronotum, left dorsal view: 41–I. australis (0000001), 42–I. manleyi (0000037), 43–I. tequila (0000053). Female antennal scrobe, left anterior view: 44–I. australis (0000001), 45–I. mesomexicana (0000035). Female pronotum, left lateral view: 46–I. australis (0000001), 47–I. manleyi (0000037), 48–I. tequila (0000053). Female antennal rims, ventral view: 49–I. bimaculata (0000002), 50–I. tequila (0000053). Female head, left lateral view: 51–I. bimaculata (0000002), 52–I. mesomexicana (0000035). Female pronotum, left lateral view: 53–I. bimaculata (0000002), 54–I. mesomexicana (0000035).

FIGURES 64–79. Invreiella australis (0000001): 64–female habitus, lateral view. Female head, left lateral view: 65–I. australis (0000001), 66–I. bimaculata (0000002), 67–I. mesomexicana (0000035), 68–I. acuminata (0000056), 69–I. cardinalis (0000018), 70–I. cuernavaca (0000032), 71–I. cephalargia (0000024), 72–I. manleyi (0000037), 73–I. breviclypeata (0000003), 74–I. chihuahuensis (0000031), 75–I. satrapa (0000049), 76–I. erythrocephala (0000034), 77–I. suarezi (0000051), 78–I. tequila (0000053), 79–Pseudomethoca frigida.

FIGURES 80–94. Invreiella australis (0000001): 80–female head, anterior view. Femaleclypeus:81–I.australis (0000001), 82– I. bimaculata (0000002), 83–I. mesomexicana (0000035), 84–I. acuminata (0000056), 85–I. cardinalis (0000018), 86–I. cuernavaca (0000032), 87–I. cephalargia (0000024), 88–I. manleyi (0000037), 89–I. breviclypeata (0000003), 90–I. chihuahuensis (0000031), 91–I. satrapa (0000049), 92–I. erythrocephala (0000034), 93–I. suarezi (0000051), 94–I. tequila (0000053).

FIGURES 95–110. Invreiella australis (0000001): 95–female habitus, dorsal view. Female mesosoma, left dorsal view: 96–I. australis (0000001), 97–I. bimaculata (0000002), 98–I. mesomexicana (0000035), 99–I. acuminata (0000056), 100–I. cardinalis (0000018), 101–I. cuernavaca (0000032), 102–I. cephalargia (0000024), 103–I. manleyi (0000037), 104–I. breviclypeata (000003), 105–I. chihuahuensis (0000031), 106–I. satrapa (0000049), 107–I. erythrocephala (0000034), 108–I. suarezi (0000051), 109–I. tequila (0000053), 110–Pseudomethoca frigida.

FIGURES 111–125. Invreiella australis (0000001): 111–female habitus, lateral view. Female mesosoma, left lateral view: 112–I. australis (0000001), 113–I. bimaculata (0000002), 114–I. mesomexicana (0000035), 115–I. acuminata (0000056), 116–I. cardinalis (0000018), 117–I. cuernavaca (0000032), 118–I. cephalargia (0000024), 119–I. manleyi (0000037), 120–I. breviclypeata (0000003), 121–I. chihuahuensis (0000031), 122–I. satrapa (0000049), 123–I. erythrocephala (0000034), 124–I. suarezi (0000051), 125–I. tequila (0000053).

FIGURES 126–128. Female habitus, dorsal view: Invreiella australis species-group. Scale bars = 2 mm. MAP 3. Geographic distribution of the Invreiella australis species-group.