Manota mexicapan, Hippa, Heikki & Huerta, Heron, 2009

Hippa, Heikki & Huerta, Heron, 2009, The genus Manota Williston (Diptera: Mycetophilidae) in Mexico, Zootaxa 2020, pp. 51-62 : 57

Manota mexicapan sp. n.

Figs 1 D, 4 A–F

Male. Colour. Head pale brown, frons, vertex and dorsal part of occiput darker brown, pedicellus and ventral part of flagellomere 1 paler than rest of antenna, mouthparts paler than face. Thorax brown. Legs pale yellowish, femur 3 infuscated on both basal and apical fourth. Wing unicolorous yellowish-brown; haltere yellowish-brown with dark brown knob. Abdominal tergites brown, sternites very pale brownish, almost colourless. All the setosity pale, yellowish or brownish, the thicker setae seeming darker than the finer setae and trichia. Head. Antennal flagellomere 4, Fig. 4 A. Palpomere 3 of maxillary palpus with apicomesial extension, with 3 apically expanded curved sensilla; palpomere 4 with parasegment; palpomere 5 1.2 times as long as palpomere 4. Number of large postocular setae 11. Thorax. Anepisternum setose, with 50 setae, anterior basalare non-setose, preepisternum 2 non-setose, laterotergite setose, with 21 setae, episternum 3 setose, with circa 10 setae. Wing. Similar to Fig. 1 B, length 2.0 mm. Hypopygium, Figs 4 C–F: Sternite 9 with lateral margin fused with gonocoxa, posterior margin transverse, extending to middle of gonocoxa, anterior margin deeply incised, the setae few, similar to the adjacent ventral setae of gonocoxa. Ventral mesial margins of gonocoxa straight, close to one another, parallel, roundly angularly turning towards transverse posterior margin. Ventral setosity of gonocoxa unmodified, at middle of posterior margin with a curved seta differing from other setosity. No parastylar lobe observable. No paraapodemal lobe observable. Dorsal mesial margin of gonocoxa sigmoid. At dorsal medial margin, lying on a more ventral level, with an elongated lobe bearing three blunt megasetae on its posterior end and one partly cleft megaseta on its anterior end. Setae on dorsal side of gonocoxa unmodified except for two long flattened setae posteriorly at dorsal mesial margin. Without posterolateral lobe on gonocoxa. With three very strong setae posterolaterally on gonocoxa. Two juxtagonostylar megasetae present, both of which are flattened and flame-shaped, dorsal one broader than ventral one, both arising from a common basal body which is about as long as the megasetae. Gonostylus narrow, elongate-oval with a slight shoulder-like widening at middle of lateral margin, ventral side non-setose, dorsal side with 4 subapical setae and 1 curved seta at middle of lateral margin. Aedeagus elongatesubtriangular, without distinct lateral shoulders, with prominent submembraneous lateral lobes on posterior half, apex straight, not curved ventrad. Hypoproct large but in the single specimen extending posteriorly only to level of base of gonostyli, with circa 20 setae on each half, distributed mainly on lateral areas. Cerci mesially separate.

Female. Similar to male. Antennal flagellomere 4, Fig. 4 B. Number of large postocular setae 10. Anepisternum with 56 setae, laterotergite with 23 setae, episternum 3 with 12 setae. Wing length 2.1 mm. Apical part of abdomen, Fig. 1 D: tergite 9 on each side with two long setae arising from large basal tubercles, cercus two-segmented.

Discussion. M. mexicapan is similar to M. planistylus Jaschhof & Hippa , M. rectolobata Jaschhof & Hippa and M. intermedia Jaschhof & Hippa , known from Costa Rica. It is distinguished from all three by having two of the setae posterodorsally on the gonocoxa flattened and expanded instead of having all the setae in this area unmodified. Furthermore, it differs from M. planistylus and M. rectolobata by the shape of the gonostylus which has the shoulder-like widening at the middle of the lateral margin, not sub-basally, and from M. planistylus and M. intermedia by the large leaf-like expansion on the more dorsal juxtagonostylar megaseta. In M. planistylus the megaseta is also rather broad, but it is not similarly abruptly widened. In the single male of M. mexicapan , the apex of the aedeagus appears straight, unlike the three other species mentioned here, in which it is curved ventrad. M. mexicapan is the only New World Manota of which the female is known.

Etymology. The name is from the Nahuatl language and means Mexican.

Types. Holotype. Male, MEXICO, Hidalgo, Tlanchinol, 3 km carretera Tlanchinol-Apantlazol, Bosque Mesofilo Montaña, Trampa Malaise, 29 septiembre al 2 octubre 1997, Cols. Blackaller J., Salceda S.B. & Perez A. (in CAIM).

Additional material. 1 female with same data as the holotype except 2 al 6 agosto 1997 (in CAIM).

Figures

FIGURE 1. Male wing (A, B), dorsal view, male maxillary palpus (C), mesial view, apical part of female abdomen (D), lateral view. A, B, C. Manota nubicola sp. n. (paratypes). D. M. mexicapan sp. n. Scale for A and B 1 mm, for C and D 0.1 mm.

FIGURE 4. Manota mexicapan sp. n. (A and C – F holotype): A. Male antennal flagellomere 4, lateral view. B. Female antennal flagellomere 4, lateral view. C. Hypopygium, ventral view. D. Hypopygium, dorsal view. E. Juxtagonostylar megasetae, dorsal view. F. Hypoproct, cerci and tergite 9, dorsal view. Scale 0.10 mm.