Aegidinus howeae Colby, 2009

Colby, Julia, 2009, Monographic revision of the genus Aegidinus Arrow (1904) and generic phylogeny of the world Orphninae (Coleoptera: Scarabaeidae: Orphninae)., Insecta Mundi 2009 (76), pp. 1-41 : 24-26

Aegidinus howeae Colby , new species

Fig. 56-57 , 69 , 89

Type material. Holotype male at USNM labeled: a) “ Bolivia, Pando: nr. Villa Bella , // 120 m primary forest seasonally // flooded, pitfall human dung, 20 // km SW of Villa Bella // 10 o 22' S 65 o 22' W // F. Guerra, II-24, 1996 ” (printed, rectangular label)/ b) “ Aegidinus // brasiliensis // Arrow // Det. Aaron D. Smith 2004” (handwritten and printed on a rectangular label with a black border)/ c) my handwritten holotype label . Allotype female at USNM labeled: (a) same as (a) above/ b) “ Aegidinus // sp. // Det. M.E. Jameson 2001” (printed and handwritten rectangular label with a black border)/ c) my handwritten allotype label .

Paratypes: One male paratype at IRSB labeled: a) “Coll. R. I. Sc. N. B. // Guyane Française” (Printed and handwritten on a purple rectangular label)/ “Cayenne” (handwritten on a green rectangular green label, pasted on the purple label)/ “Coll. J. Thomson” (printed in blue on a rectangular white label, glued onto purple label)/ b) “det………..” (printed, white, rectangular label)/ “AE // guianense // West.” (handwritten on a semi-circular blue label, pasted onto white label)/ c) my printed paratype label. One female paratype at IRSB labeled: a) “Coll. R. I. Sc. N. B. // Guyane Française // Cayenne” (printed and handwritten on a purple rectangular label)/ “Coll. J. Thomson” (printed in blue on a rectangular white label, glued onto purple label)/ b) “det………. // Aegidinus // guianensis Westw. ” (handwritten and printed on a rectangular label)/ c) my printed paratype label. One female paratype at GMMC with the following data: French Guiana, Regina RN 2 PK 125 + 3 -23. XII. 2007, J. L. Giuglaris legit, flight intercept trap. Three female paratypes and two male paratypes at GMMC with the following collection data: French Guiana, Regina, RN 2 PK 125 + 3, 11.I.2008, legit J.L. Giuglaris, flight intercept trap. One paratype female and one paratype male at GMMC with the following collection data: French Guiana, Regina, RN 2 PK 125+3, 24.I. 2008, legit J.L. Giuglaris, flight intercept trap. Two male paratypes at GMMC with the following collection data: French Guiana, Regina, RN 2 PK 125 +3, 6.II. 2008, legit J.L. Guiglaris, flight intercept trap.

Type locality. Bolivia, Pando, Villa Bella (20 km SW).

Description. Holotype male. Length 9.6 mm; width 5.4 mm. Color: Head, pronotum, and elytra piceous. Venter and legs reddish brown to piceous. Head: Frons convex medially, largely impunctate at base, becoming punctate apically; punctures sparse to moderately dense, small. Frontoclypeal suture obsolete. Clypeus with sparse, small punctures. Anterior margin of clypeus with erect, slightly recurved horn; carina extending from base of horn laterally to each eye canthus. Pronotum: Surface punctate; punctures moderate to dense, moderate to large, concentrated on sides. Basal margin with row of punctures, punctures obsolete medially. Disc with shallow, transversely suboval fovea, fovea punctate; punctures moderately dense to dense, moderate to large, occasionally slightly transverse. Anterior margin of pronotum with small, transverse, median tubercle. Elytra: Punctures of striae V-shaped, elongate, or vermiform. Striae 1, 2, and 3 obsolete at base. Lateral margin adjacent to humerus with 6 (right) or 7 (left) setose crenulations. Legs: Protibia without apical denticle. Genitalia: Fig. 56-57 .

Allotype. Female. Length 8.3 mm; width 4.4 mm. The allotype differs from the holotype in the following respects: Head: Frons not convex; surface rugopunctate. Anterior margin of clypeus without horn, with marginal bead. Pronotum: Disc without fovea, anterior margin without median tubercle. Elytra: Striae 1 and 2 obsolete at base. Lateral margin of elytra with 6 setose crenulations. Genitalia: Fig. 69 .

Paratypes: (Male = 6, female = 6). Length: 9.0- 9.7 mm; width 4.9-5.2 mm. Paratypes differ from primary types in the following respects: Male. Head: Minor male with tubercle on anterior margin of clypeus, carinula extending laterally from base of tubercle to each eye canthus. Elytra: Striae 1 and 2 obsolete at base. Female. Female paratypes are not significantly different from allotype.

Diagnosis. Aegidinus howeae is best identified using the female and male genitalia which are similar to those of A. brasiliensis . Female A. howeae do not have a ridge on the apical margin of the inferior sclerite ( Fig. 69 ), which is present in A. brasiliensis ( Fig. 65 ). In males of A. howeae , the sickle-shaped anterior margins of the lateral lobes are not long enough to meet medially ( Fig. 56-57 ) but are long enough to meet medially in A. brasiliensis ( Fig. 38-39 ).

Etymology. This species is named in honor of Tiffany Howe, in recognition of all the support, skittles, and beer she has provided during this endeavor.

Distribution (Fig. 89). Bolivia and French Guiana. Four specimens examined from USNM and IRSB, and 10 from GMMC. BOLIVIA (2): Pando: Villa Bella (20 km SW) (2). FRENCH GUIANA (3): Cayenne: Cayenne (2); Regina (10).

Temporal Distribution. January (7), February (3), December (1).

Natural History. Nothing is known about the ecology of A. howeae . The primary types were collected from a pitfall trap baited with human dung in a seasonally flooded forest.

Figures

Figures 50- 64. Male genitalia. Scale bar = 1 mm. 50) Parameres (frontal view) of A. guianensis. 51) Parameres and part of phallobase (lateral view) of A. guianensis. 52) Parameres (frontal view) of A. howdenorum. 53) Parameres and part of phallobase (lateral view) of A. howdenorum. 54) Ventral plate of A. howdenorum. 55) Lateral lobe of A. howdenorum. Arrow indicates notch. 56) Parameres (frontal view) of A. howeae. 57) Parameres and part of phallobase (lateral view) of A. howeae. 58) Parameres (frontal view) of A. oreibates. 59) Parameres and portion of phallobase (lateral view) of A. oreibates. 60) Ventral plate of A. oreibates. 61) Parameres (frontal view) of A. petrovi. 62) Parameres and part of phallobase (lateral view) of A. petrovi. 63) Parameres (frontal view) of A. teamscaraborum. 64) Parameres and part of phallobase (lateral view) of A. teamscaraborum.

Figures 65-77. Female genitalia, gonocoxites. Scale bar = 1 mm. 65) A. brasiliensis. 66) A. candezei. 67) A. guianensis. 68) A. howdenorum. 69) A. howeae. 70) A. oreibates. 71) A. simulatus. 72) A. sunidigea. 73-74) A. teamscaraborum. 75) A. tricornus. 76) A. unicus. 77) A. venezuelensis.

Figures 38-49. Male genitalia. Scale bar = 1 mm. 38) Parameres (frontal view) of Aegidinus brasiliensis. 39) Parameres and part of phallobase (lateral view) of A. brasiliensis. 40) Parameres (frontal view) of A. candezei. 41) Parameres and part of phallobase (left, lateral view) of A. candezei. 42) Ventral plate of A. candezei. 43) Parameres and part of phallobase (right, lateral view) of A. candezei.44) Parameres (frontal view) of A. cornutus. 45) Parameres and part of phallobase (lateral view) of A. cornutus. 46) Parameres (frontal view) of A. crypticus. 47) Parameres and part of phallobase (lateral view) of A. crypticus. 48) Ventral plate of A. crypticus.49) Lateral lobe of A. crypticus.