There are 4 states but a single answer is convenient. If your sample doesn't have a head you can examine states 3 and 4.
State 2 and 4 correspond to Anopheles genus.
maxillary paplus nearly equal to proboscis correspond to the genus Anopheles
scutellum without conspicuous lobes corresponds to the genus Anopheles
Developmental stage | |_ HEAD - THORAX: Anopheles or not | |_ THORAX: scutum's ornamentation {2. maxillary paplus nearly equal to proboscis , 4. scutellum without conspicuous lobes} | |_ HEAD: colour of maxillary palpus {2. maxillary paplus nearly equal to proboscis , 4. scutellum without conspicuous lobes} | |_ HEAD: colour of proboscis {2. maxillary paplus nearly equal to proboscis , 4. scutellum without conspicuous lobes} | |_ HEAD: antennal ornamentation {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ HEAD: interocular space ornamentation {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ HEAD: colour of segment 5 of the maxillary palpus {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ HEAD: look of the maxillary palpus scales {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ HEAD: number of white rings on the maxillary palpus {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ THORAX: covering of the scutum {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ THORAX: scutums ornamentation - An {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ THORAX: Prespiracular and postspiracular setae {2. maxillary paplus nearly equal to proboscis , 4. scutellum without conspicuous lobes} | |_ WING: colour of the scales on the wing veins {2. maxillary paplus nearly equal to proboscis , 4. scutellum without conspicuous lobes} | |_ WING: Uranotaenia or not {2. maxillary paplus nearly equal to proboscis , 4. scutellum without conspicuous lobes} | |_ LEG I: Orthopodomyia or not {2. maxillary paplus nearly equal to proboscis , 4. scutellum without conspicuous lobes} | |_ LEG III: colour of tarsomere 2 {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ LEG III: colour of tarsomere 3 {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ LEG III: colour of tarsomere 4 - An {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ LEG III: colour of tibia {2. maxillary paplus nearly equal to proboscis , 4. scutellum without conspicuous lobes} | |_ LEG III: colour of the median part of tibia and femur {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ ABDOMEN: Ornamentation of the tergites {1. maxillary palpus clearly shorter than proboscis , 3. scutellum clearly trilobate} | |_ ABDOMEN: Ornametation of tergite III {2. maxillary paplus nearly equal to proboscis , 4. scutellum without conspicuous lobes}