Haroldiataenius hintoni (Saylor)

Stebnicka, Z. Teresa & Skelley, Paul E., 2009, A revision of the genus Haroldiataenius Chalumeau (Scarabaeidae: Aphodiinae: Eupariini), Insecta Mundi 2009 (62), pp. 1-16 : 5-6

Haroldiataenius hintoni (Saylor)

( Fig. 2 , 15, 18, 24)

Ataenius hintoni Saylor 1933: 159 .

Haroldiataenius (Sayloria) hintoni – Chalumeau 1981: 140, fig. 4, 5; Dellacasa 1988: 275 (catalogue). Haroldiataenius hintoni – Galante et al. 2003: 288; Stebnicka 2007: 585.

Diagnosis. Clypeal margin rounded each side of middle, surface finely punctate. Pronotal punctures coarse, dense across entire surface, separated by less than their diameter. Pronotum with basal marginal line narrow, weakly defined. Lateral margins of pronotum and elytron with short fringe of setae. Haroldiataenius hintoni is known from Mexico, Guatemala, and Honduras, where it appears to live in association with leaf cutter ants.

Description. Length 3.0-3.3 mm. Dark reddish brown, shining ( Fig. 2 , 15). Clypeal margin finely reflexed, rounded each side of deep median emargination; genae small, right-angled, with clump of setae; surface narrowly concave above emargination and finely, transversely rugulose up to median convexity, vertex with fine punctures. Pronotum convex, base without marginal line, lateral edge crenate-fimbriate, setae short; surface evenly, coarsely punctate

throughout, punctures almost contiguous. Elytron

convex, humerus finely dentate, striae strong,

punctate-crenate; intervals moderately convex

with fine scattered punctures; elytral margin with

fringe of very short setae. Metasternum smooth,

nearly impunctate from side to side, intercoxal

carina fine, short; abdominal sternites with in-

conspicuous fluting along sutures and smooth

medially, slightly shallowly wrinkled laterally;

sternite 5 weakly and weakly eroded disc of py-

gidium with row of moderate punctures and fine

setae. All femora smooth, shining; meso- and

metafemur short, without posterior lines;

metatibia apically with short setae, without accessory spine; basal tarsomere of metatarsus

shorter than upper tibial spur and shorter than

following three tarsomeres combined. Epipharynx

as in Fig. 18. Male genitalia with shortened, tri-

angular parameres ( Fig. 24 ).

Type data. Holotype (not examined): “Tejupilco

VII. 1932 Mex. D.F. Alt. 3960 f”, “H.E. Hinton

coll.”, “ At. hintoni Saylor ”, in CASC.

Specimens examined (45). Guatemala – (2 ex)

Jalapa, Laguna del Moyo, 12. VI.1982, with Atta

sp. J. Baster ( CEUA). Honduras – (1 ex) El

Paraiso, 8.VII.1999, M. Cruz ( CEUA). Mexico –

(8 ex) Chiapas, Cinco Cerros, 860 m, 31. V.1990, Figures 12-15. Haroldiataenius spp., dorsal habitus. 12) H.& A. Howden ( CMNO); (6 ex) Chiapas, El H. mariarum . 13) H. saramari . 14) H. limbatus . 15) H. hintoni .

Aguacero 16 km W Ocozocoautla 600 m, 5. VI.1998,

H. & A. Howden ( CMNO); (17 ex) Chiapas, Puente

Macuilapa, Rt. 90 near Los Amates , 22. V.1964, R. Woodruff, blacklight trap ( CMNO); (1 ex) Chiapas, Mpio Cintalapa 5 mi N Nvo Tenochtitlan, 31.VIII.1991, Kovarik & Philips ( PESC); (3 ex) Jalisco, 28 km S Chamela , 16.VII.1987, light trap, R. Turnbow ; 28.4 km S of Chamela , 16.VII.1987, R. Turnbow ( ISEA, RHTC); (1 ex) Jalisco, km 59, Hwy 200, Chamela Bio. Station , N19 o 29.9', W105 o 2.6', 105m, 27-28. VI.2006, D. Brzoska ( FSCA); (3 ex) Sonora, 17 km SW Montezuma , 22.VII.1980, S. McCleve ; Sonora, Hwy 16, 20 mi E Rio Yaqui, 26-27.VII.1987, S. McCleve ( PKLC); (4 ex) Sonora, 15 km NE Alamos , 30.X.1972, K. Stephan ( FSCA) .

Remarks. Haroldiataenius hintoni has been previously recorded from Sonora (Alamos) and Tamaulipas (Magiscatzin), Mexico by Chalumeau (1981); from Honduras (no further data) by Galante et al. (2003); and from Guatemala (no further data) by Stebnicka (2007). Specimens were found in detritus remnants in the nest of Atta sexdens and collected with light traps. The coarse, dense pronotal punctation readily distinguishes H. hintoni from all other members of the genus.

Figures

Figures 1-7. Haroldiataenius spp. 1) H. mariarum, lateral habitus. 2) H. hintoni lateral habitus. 3) H. lucanus, mesotibia. 4) H. semipilosus, mesotibia. 5) H. saramari, lateral habitus. 6) H. lucanus, lateral habitus. 7) H. limbatus, lateral habitus.

Figures 22-28. Haroldiataenius spp., male genitalia. 22) H. mariarum. 23) H. limbatus. 24) H. hintoni. 25) H. lucanus. 26) H. griffini. 27) H. saramari. 28) H. semipilosus.