Acanthoscelides, OBTECTUS

Romero-Nápoles, Jesús, 2010, A New Species Of Acanthoscelides Schilsky, 1905 (Coleoptera: Bruchidae) From Nuevo León, Mexico, With A Key To The Obtectus Species- Group, The Coleopterists Bulletin 64 (2), pp. 125-128 : 125-126

KEY TO THE ACANTHOSCELIDES OBTECTUS

SPECIES- GROUP

1. Mucro at apex of hind femur ≤0.16 times as long as the first tarsomere...........................2

1 ′. Mucro at apex of hind femur 0.18 – 0.25 times as long as the first tarsomere.......................4

2(1). Large subapical spine of hind femur up to 1.4 times as long as width of tibial base, female with ovipositor not strongly sclerotized, neither ending in two spine-like processes............................................................3

2 ′. Large subapical spine of hind femur up to 1.6 times as long as width of tibial base, female with ovipositor strongly sclerotized, ending in two spine-like processes ............... ................................. A. argillaceus (Sharp)

3(2). Apical segment of antenna red orange; antennal segments broad, antennae reaching to elytral humeri; hind leg orange except half of ventral face of hind femur black.............. .......................................... A. obtectus (Say)

3 ′. Apical segment of antenna black or dark brown; antennal segments narrow, antennae reaching to 0.3 length of elytra; hind leg usually all black (occasionally as in A. obtectus ).......... ....................................... A. obvelatus Bridwell

4(1 ′). Male length (pronotum-elytra) 2.4 mm or less........................... A. amplilobus Johnson

4 ′. Male length (pronotum-elytra) more than 3.0 mm.........................................................5

5(4 ′). Color of body red orange, male length (pronotum-elytra) up to 3.3 mm ................. ............................. A. eriosemicola Johnson

5 ′. Color of body dark brown, male length (pronotum-elytra) 3.6 mm or more .............. .............. A. delgadoi Romero , new species